Shenghua Liu

Central China Normal University · Department of Chemistry

In this study, we have successfully designed and synthesized two novel dual‐emission emitters featuring phenothiazine‐5‐oxide and phenothiazine‐5,5‐dioxide motifs, characterized by highly lopsided and asymmetric conformational states. Through rigorous spectral examinations and DFT calculations, the compounds exhibit distinctive ICT phenomena, coupl...

Achieving high-contrast tricolor emissive regulation of a single-component molecule using a single type of external stimulus is highly desirable but challenging. In the present study, we report a symmetric acceptor-donor-acceptor (A-D-A)–type aggregation-induced emission-active luminogen, which displays a sequential high-contrast fluorescence switc...

In recent years, the field of organometallic chemistry has made a great progress and diverse types of metallaaromatics have successively been reported. In those studies, incorporation of ligated osmium centers into metallaaromatic systems played a prominent role. The reviewed literature documents that certain metallaaromatics with unconventional ph...

Changes in cellular viscosity are associated with various physiological processes and pathological conditions. To study these cellular processes and functions, highly sensitive fluorescent probes that detect subtle changes in viscosity are urgently needed but remain lacking. In this study, we present a series of viscosity-responsive near-infrared (...

Cyanines in the near‐infrared region are a typical example of a classic fluorescent dye that has garnered significant attention and widespread use in the life sciences and biotechnology. Their character to form assemblies or aggregates has inspired the development of various functional cyanine dye aggregates in phototherapy. This article provides a...

π‐Conjugated dinuclear complexes with inorganic or organometallic redox‐active termini attained considerable interest in the past three decades as models for detailed investigation focused on intramolecular electron transfer (ET) processes in molecular electronic devices. Numerous transition metal complexes [L n M–bridge–ML n ] with ligated M servi...

In this work, two novel luminescent molecules containing distorted phenothiazine-S-oxide and phenothiazine-S,S dioxide skeletons were synthesized by oxidation reactions using different oxidants (m-chloroperoxybenzoic acid, acetic acid /hydrogen peroxide). The target compounds were all confirmed by 1H NMR, 13C NMR and EI-MS. Combined with the result...

The cationic nature of heptamethine cyanines gives them the capacity to form aggregates with salts by electrostatic interactions. In this work, NaCl promoted J‐aggregate formation of aza‐coating heptamethine cyanines is explored. NaCl can induce the N‐benzyloxycarbonyl Cy‐CO2Bz to assemble into a J‐aggregate having an absorption at 890 nm. Its exce...

Although osmabenzyne, osmanaphthalyne, osmaphenanthryne, and osmaanthracyne have been previously reported, the synthesis of polycyclic osmaarynes is still a challenge. Herein, we report the successful synthesis of the first pentacyclic osmaarynes (pyreno[b]osmabenzynes 1 a and 2 a) and hexacyclic osmaaryne (peryleno[b]osmabenzyne 3 a). Nucleophilic...

The cationic nature of heptamethine cyanines gives them the capacity to form aggregates with salts by electrostatic interactions. In this work, NaCl promoted J‐aggregate formation of aza‐coating heptamethine cyanines is explored. NaCl can induce the N‐benzyloxycarbonyl Cy‐CO2Bz to assemble into a J‐aggregate having an absorption at 890 nm. Its exce...

Metallaaromatics as a new class of organometallic compounds have attracted considerable attention in recent years. Metallaaromatic compounds where the number of fused rings forming the metalla-polycyclic skeleton exceeds seven have...

Comprehensive Summary Simple and efficient synthesis of metalla‐aromatics with tailored distinctive optical, magnetic, redox, and light‐emitting properties is attractive yet challenging. We have now successfully synthesized three paramagnetic osmanaphthalenes bearing different electron‐donating groups as well as the first osmabenzo[ b ]carbazole co...

Isomeric diruthenium complexes with bis(ethynyl)pyridine as bridge core [2,6-bis(ethynyl)pyridine (1), 3,5-bis(ethynyl)pyridine (2), 2,5-bis(ethynyl)pyridine (3)] were successfully prepared and characterized by ¹H NMR, ¹³C NMR and elemental analysis. The electrochemical properties of complexes 1–3 were investigated by cyclic voltammetry (CV) and sq...

Long‐lived luminescent materials possess wide application prospects in various areas, but their constructions still face a huge challenge, especially the achievement in solution. Manipulating aggregate is an effective method to attain intriguing luminescence, thus it is expected to build long‐lived materials in solution. In this work, a series of n...

In this study, three molecules with distorted asymmetric D-A-D' structure were synthesized by one-step nucleophilic substitution reaction using different fluorophores (carbazole, phenoxazine, phenothiazine) as electron donors and benzophenone with distorted conformation as electron acceptor. The target compounds were all confirmed by ¹H NMR, ¹³C NM...

Heptamethine cyanine dyes, typified by indocyanine green (ICG), have been extensively employed as bioimaging indicators and theranostic agents. Significant efforts have been made to develop functional heptamethine cyanine dyes with outstanding bioimaging and theranostic utilities. In this work, we rationally designed and successfully developed a no...

The syntheses of a series of ferrocene (Fc)–ethynyl–triarylamine (TAA) inorganic–organic mixed-valence systems with different aromatic bridge linkers (Aryl = 1,4-phenyl [1], 1,4-naphthyl [2], 9,10-anthryl [3]) are reported in this study. These systems were accessible with good yields through the classical Sonogashira cross-coupling reactions of bro...

Developing phosphors with long-lifetime (millisecond scale or even longer) solid state room temperature phosphorescence (RTP) feature has attracted considerable attention. However, to date, stimuli-responsive phosphors with RTP nature are still rare due to the absence of effective guidelines for the exploitation of luminophors synchronously possess...

Six novel triarylamine (TAA)−ferrocenyl conjugates (1−6) were prepared and characterized using molecular spectroscopic and crystallographic methods. Different species with a corresponding valences of 1ⁿ⁺−6ⁿ⁺ (n = 0, 1) were investigated using cyclic voltammetry, UV−Vis−NIR spectroelectrochemistry, and quantum−chemical calculations. Electrochemical...

Four 3-fold symmetrical hexabenzocoronene-bridged trinuclear alkynylgold(I) compounds with different isocyano groups have been synthesized and characterized by ¹H, ¹³C NMR, HRMS (ESI) spectra and elemental analyses. The photophysical properties have been fully studied through UV − vis absorption and fluorescence emission spectra, combined with DFT/...

Members of a new class of complexes, 2(CF3), 2(H), 2(Br), 2(I), and 2(OCH3), have been synthesized in a one‐pot method involving the treatment of osmanaphthalynes bearing corresponding substituents (1(CF3), 1(H), 1(Br), 1(I), and 1(OCH3)) with trimethylphosphine (PMe3) and water. The main reaction process involves two steps, namely a ligand‐exchang...

Understanding the physical mechanisms governing aggregation-induced-emission (AIE) and aggregation-caused-quenching plays a vital role in developing functional AIE materials. In this work, tetraphenylethene (TPE, a classical AIEgen) and naphthalimide (NI, a popular fluorophore with ACQ characteristics) were connected through non-conjugated linkages...

The photoisomerization properties of azo derivatives have been widely used in the fields of materials and biology. One serious restriction to the development of functional azo-based materials is the necessity to trigger switching by UV light, which damage the corresponding surfaces and penetrate only partially through the matter. Therefore, develop...

Thienoisoindigo as a popular conjugated skeleton has been constantly applied in the construction of organic optoelectronic materials. Exploring its new applications in fluorescent sensors and bioimaging is helpful to extend its potential. In this work, a thienoisoindigo fluorophore was first selected as a building block to be applied in the constru...

Developing novel photochromic complexes based on dithienylethene is highly desirable for potential application in the fields of photoresponsive optoelectronics. In this contribution, four novel dithienylethene-bridged gold(I) isocyanide complexes 1a-1d have been designed and prepared by appending alkynyl-gold(I)-isocyanide triads at the termini of...

The homeostasis of acid/base and alkali metal played critical roles in life process. To get insight into their functional mechanism, a large amount of detectors, especially based on organic fluorescent probes have been largely developed and used to monitor the dynamic changes of pH and alkali metal ions. Importantly, fluorescent probes provide a po...

Three carbazole-containing isocyano-bridged mononuclear gold(I) complexes with different substituents are reported. The complexes display an aggregate luminescence change effect involving a color change from blue to yellow-green. In the solid state, luminogens 1–3 exhibit varying room-temperature phosphorescence involving blue, light yellow, and ye...

Heptamethine cyanine dyes (Cy7) have attracted much attention in the field of biological application due to their unique structure and attractive near infrared (NIR) photophysical properties. In this review, the influences of different modification sites on the absorption characteristics, photostability, Stokes shift, fluorescence characteristics,...

We present herein the synthesis, structure, redox and electronic absorption studies of a series of cyclometalated iridium-triarylamine complexes 1−7. For complexes 1-4 where the amine nitrogen is in the meta position to the Ir–CC^N bond, the electronic nature of the triarylamine units is varied by using different substituents (H, Me, OMe and Cl). I...

The development of novel dithienylethene-based complexes is highly desirable for potential application in the photoresponsive optoelectronics. In this contribution, we designed and prepared four novel dithienylethene-containing isocyanides 9a-9d and their binuclear gold (I) complexes 3a-3d with various alkyl chains. They were fully characterized an...

A series of bimetallic ruthenium vinyl complexes 1–5 bridged by oligoacenes were synthesized and characterized in this study. Comparative cyclic voltammetry results from 1–5 indicated that the first oxidation potential decreased gradually with the extension of conjugate ligands. Upon oxidation to singly oxidized species 1⁺–5⁺, rather small ν(CO) ch...

The influence of the aggregation-induced emission (AIE) effect on the luminescence and the chirality of two chiral Au clusters (R)-1 and (S)-1 was well demonstrated. Their solid states exhibited extremely bright phosphorescence with quantum yields above 70%. The two clusters were free of luminescence and chirality in diluted solution. Meanwhile, th...

Reactive oxygen species (ROS) are a type of active species in body, and can participate in the process of tumor development under the condition of oxidative stress, which can lead to the apoptosis of cancer cells through a variety of different mechanisms. Photodynamic therapy (PDT) is a novel method of treating tumor with photosensitive drugs and l...

Near‐infrared fluorescent agents generally exhibit typical push‐pull electron characteristics, and their optical behaviors are closely related to their molecular structures. Benzobisthiadiazole moiety as a classic electron acceptor has been typically used to design the Donor‐Acceptor‐Donor (D‐A‐D) type of fluorescent/photoacoustic agents with emiss...

Four rutheniumethynyl‐triarylamine complexes 1–4 with different aryl bridge cores were prepared. The solid structures of complexes 2–4 were fully confirmed by X‐ray single‐crystal diffraction analysis. Two consecutive one‐electron oxidation processes of complexes 1–4 were attributed to the ruthenium and nitrogen centers, as revealed by cyclic volta...

The development of new organometallic materials with aggregation-induced emission (AIE) characteristics is pursuing due to their wide prospects in various application fields. In this work, we synthesized Au(I)-containing copolymers (P1–3) by copolymerization of methyl methacrylate (MMA) monomers, carrying Au(I) isocyanide acrylate unit and MMA in d...

A commercial cyanine dye IR-780 and a thioether-containing dicarboxylic acid ligand were used to construct the near-infrared fluorescent probe, which was used as a near-infrared fluorescent indicator for the determination of mercury ions in water and in living cells. This indicator displayed high specificity towards Hg²⁺ without any interference fr...

Fluorescent switches have displayed many applications in the field of materials. In this work, we reported a photochromic dithienylethene containing a dansyl-based fluorescent dye, and investigated its photochromism and optical properties. Under the alternating irradiation of UV and visible light, it exhibited good photochromism and switchable fluo...

Four cyclometalated diiridium complexes, with IrCp*Cl (Cp*=η⁵‐C5Me5⁻) termini bridged by 1,4‐ and 1,3‐bis(p‐tolyliminoethyl)benzene (1, 2), or 1,4‐ and 1,3‐bis(2‐pyridyl)benzene (3, 4), were prepared and characterized by nuclear magnetic resonance (NMR) spectroscopy and single‐crystal X‐ray diffraction (complexes 1, 2, and 4). The two iridium cente...

The different oxidation states of sulphur atom play a significant role on functional materials. In this work, a aryl-thioether and its sulphone substituted benzo[c][1,2,5]oxadiazole dyes were synthesized and utilized to determine thiol-containing amino acids. The result of selectivity experiments showed they detected the cysteine and homocysteine u...

Novel classes of contorted hexabenzocoronenes (c-HBCs) which exhibit a doubly concave configuration were synthesized by using hexabenzocoronene as bridge ligand and diphenylamine/triphenylamine as the redox-active termini. Although the analysis of the crystal structures of tri-di(4-methoxyphenyl)amino-substituted HBC (1), trimethoxy-substituted HBC...

A gold(I) complex is reported. Interestingly, crystals of the gold(I) complex exhibit an excellent excitation wavelength-dependent emission effect at room temperature. Notably, a nearly pure white emission with Commission Internationale de L'Eclairage (CIE) 1931 chromaticity coordinates of (0.32, 0.33) is obtained upon excitation with 406 nm light.

We describe the synthesis and characterization of triarylamine ethynyl ruthenium conjugate (4-OMeC6H4)2N-{C6H4-4-C≡C-RuCp* (dppe)}, 3. Its electronic and spectroscopy properties are investigated by anodic voltammetry, IR and UV–vis–NIR spectroelectrochemistry, and density functional theory (DFT) calculations. Results indicate that 3 undergoes two w...

Functional molecules with aggregation-induced emission (AIE) have lately received the most attention due to their versatile functions in many fields. In this work, tetraphenylethene (TPE) as one of the most concerned AIE systems was installed on different fluorophores including dansyl, naphthalimide, 4-nitro-1,2,3-benzoxadiazole (NBD), borondipyrro...

A D-π-A-π-D type of tetraphenylene-coating benzoselenodiazole fluorescence dye with near-infrared emission has been designed and constructed. This dye shows an obvious aggregation-induced-emission behavior. In the solid state, it exhibits a reversible mechanochromism with the changes of near-infrared emission. Furthermore, this dye can be used to t...

Molecular probes suitable for different fluorescence imaging technologies can meet the requirements of different scientific researches in biological applications. In this work, a naphthalimide-cyanine based sulfonamide was used to specifically visualize the glutathione of mouse tissues with a two-photon manner for the naphthalimide moiety and a nea...

Benzobisthiadiazole has been widely applied as a classic molecular backbone in the construction of various near-infrared fluorescent materials due to its excellent photostability, thermostability, far fluorescence emission, large stoke shifts, and adjustable structures. In this review, we summarize the recent progress of benzobisthiadiazole-based f...

Developing glutathione-specific fluorescent probes with novel fluorescence-responsive manners can enrich the applications of probes in living cells. In this work, we designed and synthesized a dual fluorophores (naphthalimide and dansyl) co-modified fluorescent probe, which displayed a high selectivity toward glutathione (GSH). In living cells, thi...

Fluorescent probes with novel organelle-labeling manner can contribute to verify the unraveling cellular functions of various organelles. In this work, we reported a glutathione (GSH) specific near-infrared fluorescent probe, which was composed of a near-infrared cyanine moiety, a morpholine-containing naphthalimide and a thiol-reactive site. The c...

A tetraphenylethene (TPE) derivative substituted with a sulfonyl‐based naphthalimide unit (TPE‐Np) was designed and synthesized. Its optical properties in solution and in the solid state were investigated. Photophysical properties indicated that the target molecule, TPE‐Np, possessed aggregation‐induced emission (AIE) behavior, although the linkage...

Firstly, in Scheme 1 c of this Communication, the chemical structure of D is incorrect. The correct version is shown in the updated Scheme 1 below. Secondly, there is a mistake in the first paragraph of the Experimental Section. The “calcium hydride (methanol)” in the sixth line is wrong and should be “I2/Mg (methanol)”. Thus, the first paragraph s...

Benzothiadiazole (BTD) has been extensively used as a building block in optical materials. In this work, a class of π-conjugated BTD-based luminogens BTD-685, BTD-580, BTD-675 and BTD-565 were designed by varying donor units and facilely synthesized by Heck coupling reaction. It was found that their emission in solid state covered the regio from or...

The development of multiresponsive photochromic materials is of increasing interest for their potential application in the complicated chemical and biological environment. Here, a novel D-A type dithienylethene derivative NDM, in which dimethylamino group acted as both electron donor (D) and recognition moiety for H⁺, and the dicyanovinyl group fun...

Diarylamine‐substituted osmanaphthalyne complexes featuring two redox centers linked by the rigid skeleton of the metallacycle (C∧C+), viz. [OsCl2(PPh3)2{(C∧C+)NAr2}][BF4‒] (Ar = Ph (1a), p‐MeOPh (1b)) and their open‐ring precursors [OsHCl2(PPh3)2{(≡C‒C(PPh3+)=CHPh)NR2}][BF4‒] (Ar = Ph (2a), p‐MeOPh (2b)), were successfully synthesized and characte...

Like beautiful magic, the novel synthetic method described in this paper was used to prepare osmanaphthalynes, osmaanthracyne, and osmaphenanthryne. Under this kind of “magic”, the dragons (which represent the osmium compounds) transform into different shapes. The colors of the dragons correspond to the colors of the compounds reported. More inform...

We propose and demonstrate a novel molecular design strategy to develop supramolecular fluorescent viscosity probes. Our new probes are constructed based on host-guest chemistry, in which the guest fluorophore itself is not a viscosity sensor. However, upon complexation with the host molecule, the resulted supramolecule exhibits unusual intermolecu...

Organic chromic materials that respond to external stimuli, especially in the solid state, have sparked extensive interest owing to their potential use as smart materials. In particular, the availability of chromic materials, which emit fluorescence or phosphorescence in the deep penetrating, near-infrared (NIR) region, has led to great improvement...

Diarylethene is one of the most commonly used photoswitches in the molecular electronics field. Interestingly, two new diarylethene-based compounds (incorporated into a non-C3-symmetric terthiophene core) show unexpectedly great resistance to photocyclization. Time-resolved vibrational spectroscopy reveals that photoswitching is prevented by the as...

Two naphthalimide-based fluorescent probes containing a thiomorpholine (Np-NS) or a sulfoxide-morpholine (Np-NSO) component were reported. The morpholine unit of non-fluorescent Np-NS and Np-NSO can transform into the sulphone-morpholine and accompany by blue fluorescence upon oxidative stress, ascribing to the formation of sulphone-morpholine on p...

Three novel gold(I) complexes based on triphenylamine, carbazole or tetraphenylethylene moiety have been successfully designed and synthesized. Meanwhile, their structures were characterized by nuclear magnetic resonance spectroscopy and elemental analysis. Their solid-state luminescence characteristics were surveyed by photoluminescence spectrosco...

Glutathione is a major endogenous antioxidant in biological systems. As a result, highly selective fluorescent probes are significant components of studies aimed at gaining a better understanding of the role(s) glutathione plays in biological functions. In this study, we developed a dual-channel turn-on fluorescent probe for glutathione, comprising...

Two related three-membered series of nonlinear aminophenylferrocene and diphenylaminoferrocene complexes were prepared and characterized by 1H and 13C NMR spectroscopy. The first series consists of 4-(diphenylamino)phenylferrocene (TPA-Fc, 1a), its dimethoxy-substituted tetraphenylphenylenediamine derivative (M2TPPD-Fc, 1c), and the triphenylamine-...

A difluorobenzothiadiazole-based fluorescent material exhibits a reversible mechanofluorochromic characteristic in the solid state and its red emissions switch to near-infrared fluorescence upon mechanical stimulation, but recover after fuming the ground solid powder with dichloromethane. For more details, see the Communication by X. Liu, C. Zhang,...

A difluorobenzothiadiazole-based fluorescent material with a D-π-A-π-D structure exhibits a reversible mechanofluorochromic characteristic in the solid state. Its red emissions switch to near-infrared fluorescence upon mechanical stimulation, but recover after fuming the ground solid powder with dichloromethane.

Five phenylethyne(p-alkoxyphenyl isocyanide)gold(I) complexes with different alkyl chains (OR) in the para-position of the phenyl isocyanide have been successfully synthesized [where R = CH3 (5a), C2H5 (5b), C4H9 (5c), C6H13 (5d), and C10H21 (5e)] and structurally characterized by ¹H NMR, ¹³C NMR, and HRMS. To our surprise, the as-prepared powders...

Mechanically interlocked structures such as rotaxanes and catenanes provide a novel backbone for constructing functional materials with unique structural characteristics. In this study, the novel photoswitchable [n]rotaxanes 11 and 12 based on dithienylethene unit were efficiently synthesized by the classical template-directed clipping approach. An...

A naphthalimide-based ratiometric fluorescent probe for determining glutathione (GSH) was constructed by installing two oxidized morpholine (e.g. thiomorpholine-S-dioxide and morpholine-N-oxide) components on the “off-to-on” GSH probe. This probe displayed high selectivity towards GSH. As well, the bioimaging application confirmed that this probe w...

Molecular recognition based on hydrogen bond interaction plays a significant role in supramolecular self-assembly. In this work, we successfully developed a class of novel frameworks containing a urea in the recognition site and a carboxylate anion in the guest unit. The self-recognition model based on the interaction between urea and carboxylate a...

A series of five diruthenium diethynyl complexes based on α,β-fused oligothienoacenes in the core of the bridging ligands [{Ru(dppe)Cp*}2(μ-C≡C-L-C≡C)] [dppe = 1,2-bis(diphenylphosphino)ethane, Cp* = η(5)-C5Me5; L = thieno[3,2-b]thiophene (4), thieno[2,3-b]thiophene (5), 3,4-dimethylthieno[2,3-b]thiophene (6), dithieno[3,2-b:2',3'-d]thiophene (7),...

The cover picture shows shows the construction of crown etherstoppering [3]rotaxanes based on N‐hetero crown ether host. Usually, crown ethers play the role of host macrocycles to combine with the guest molecules in the construction of rotaxanes. Based on the fact that crown ethers have large dimension, two [3]rotaxanes containing four crown ether...

Crown ether usually plays the role of macrocyclic host in supramolecular chemistry, but here the crown ether is also utilized as the stoppers in rotaxanes. In this work, we designed and synthesized two [3]rotaxanes containing four crown ether components by using an approach of template-directed clipping reaction, of which, two crown ether component...

A carbazole-based gold(I) complex 1 has been successfully synthesized. Its structure was characterized by nuclear magnetic resonance spectroscopy, elemental analysis and single crystal X-ray diffractometry. Its aggregation-induced emission behavior was studied by ultraviolet/visible, photoluminescence spectroscopy and scanning electron microscope....

A dithieno[3,2-b:2′,3′-d]pyrrole-based luminogen 1 has been synthesized by appending two twisted triphenylamine units to the rigid conjugated dithieno[3,2-b:2′,3′-d]pyrrole core. This compound exhibits reversible mechanochromic luminescence in the solid state and near-infrared electrochromic switching behavior in solution. A reversible switching in...

A mononuclear iron complex with 2-ethynylbenzo[b]thiophene C-coordinated to the (η⁵-Cp*)(η²-dppe)Fe (Cp* = pentamethylcyclopentadienyl, dppe = 1,2-diphenylphosphinoethane) framework (1) was prepared and characterized by ¹H-NMR, elemental analysis and single crystal X-ray diffraction. The redox behavior of 1 was investigated by voltammetric methods...

The asymmetric electrochemical oxidations of the studied diethynyl oligophenylamine-bridged diruthenium and diiron complexes depend on the nature of the bridge core and the metal center. One-electron-oxidized Ru(CC)TPA(CC)Ru (TPA = triphenylamine) exhibits moderate spin delocalization and electronic coupling between the Ru centers, unlike the stron...

Supramolecular chemistry and self-assembly provide a valuable chance to understand the complicated topological structures on a molecular level. Two types of classical mechanically interlocked molecules, rotaxanes and catenanes, possess non-covalent mechanical bonds and have attracted more attention not only in supramolecular chemistry but also in t...

The research efforts on oligoacene systems are still relatively limited mainly due to the synthetic challenge and the extreme instability of longer acenes. Herein, these two issues have been overcome through elaborative modification and the stable pentacene species has been successfully synthesized. Additionally, a series of bis(diarylamino) compou...

Treatment of Ru3(CO)12 with an equivalent of (2-phenyl-1H-inden-3-yl)dicyclohexylphosphine (1) and (2-pyridyl-1H-inden-1-yl)dicyclohexylphosphine (4) in refluxing heptane gave the novel trinuclear ruthenium clusters (μ3-η1:η2:η5–2-phenyl-3-Cy2PC9H4)Ru3(CO)8 (1c) and [μ2-η1–2-(pyridin-2-yl)-3-Cy2PC9H6]Ru3(CO)9 (4a), respectively, via C─H bond cleava...

A focused library of phosphine ligands was constructed for structural optimization. The catalyst can be used to perform the Suzuki-Miyaura cross-coupling reaction of aryl and heteroaryl chlorides.

Some terpyridyl-based dithienylethenes were synthesized and their structures were confirmed by NMR spectroscopy, mass spectroscopy and elemental analysis. The photochromic properties and fluorescence behaviors of these compounds have been measured upon irradiation with UV or visible light in solution. UV/vis absorption spectra and fluorescence spec...

Developing highly selective fluorescent probes for the determination of thiophenol is very significant due to its toxicity influence in biological system. In this work, we firstly found that the commercial available cyanine dye 3H-Indolium, 2-(2-(2-chloro-3-(2-(1,3-dihydro-3,3-dimethyl-1-propyl-2H-indol-2-ylidene)ethylidene)-1-cyclohexen-1-yl)ethen...

Amino acids containing the thiol group play significant roles in keeping biological oxidation reduction balance. Due to the important cellular function of biothiols, it is imperative to develop efficient methods to detect biothiols in complicate biological systems. In this work, we developed a cyanine-based fluorescent probe utilizing thioether as...

Four new diruthenium complexes [{(η(5)-C5Me5)Ru(dppe)}2(μ-C[triple bond, length as m-dash]C-L-C[triple bond, length as m-dash]C)] featuring different bridging isomeric diethynyl benzodithiophenes viz. L = benzo[1,2-b;4,5-b']dithiophene (complex ), benzo[2,1-b;4,5-b']dithiophene (complex ), benzo[1,2-b;3,4-b']dithiophene (complex ) and benzo[1,2-b;4...

Diels—Alder cycloadditions of arynes, in situ generated from 1,3-diynes (I), and dienophiles, such as furans, cyclopentadiene, and pyrrole are developed.

A series of ruthenium(ii) complexes [{RuCl(CO)(PMe3)3(-CH[double bond, length as m-dash]CH-)}nX], (: n = 3, X = 3,3''-dimethyl-2,2':3',2''-terthiophene; : n = 2, X = 2,2'-bithiophene; : n = 2, X = 2,3-bis(3-methylthiophen-2-yl)benzothiophene) and [{Cp*(dppe)2Ru(-C[triple bond, length as m-dash]C-)}3X], (X = 3,3''-dimethyl-2,2':3',2''-terthiophene),...

A novel naphthalimide-based fluorescent probe employing a sulfonamide unit as a thiol-responsive group is reported. It is capable of efficiently distinguishing GSH from cysteine and homocysteine. Bioimaging shows that it has high selectivity in living cells and can visualize the level of GSH in lysosomes. It is worth mentioning that different group...

In this paper, seven carbazole-based mononuclear gold(i) complexes with alkyl chains of different lengths have been synthesized and reported. All of these gold(i) complexes exhibit outstanding AIE characteristics. Furthermore, these various solid-state light-emitting AIE-active gold(i) complexes all show reversible mechanochromic fluorescent behavi...