Fuyou Ke's research while affiliated with Donghua University and other places
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Publications (50)
Polyetherimide (PEI) has been widely applied in the form of plastics, films, and foam materials. But PEI fiber is confronted with some challenges, such as high melt viscosity and high spinning temperature during the spinning process, poor mechanical properties because of its amorphous structure. In this study, ionic liquids (ILs) and carbon nanotub...
![Effect of incubation time on emission of VOCs in fibers by HS‐GC ([a] 2...](publication/365616702/figure/fig3/AS:11431281254264370@1719100678242/Effect-of-incubation-time-on-emission-of-VOCs-in-fibers-by-HS-GC-a-2-D51mm-b-12_Q320.jpg)
The emission behaviors of volatile organic compounds (VOCs) can be characterized by the key parameters: the initial concentration (m0), partition coefficient (K) and the diffusion coefficient (D). The MHE‐GC method was validated to determine the emission characteristics of VOCs (Benzene, Toluene, Ethylbenzene, P‐xylene, M‐xylene, Styrene, and O‐xyl...
Poly (ε-caprolactone) (PCL) is often used as a toughening agent for polylactic acid (PLA) due to its good toughness and biodegradability, but they are immiscible polymer blends. Employing nanocellulose (TOBC) as the stabilizers, we prepare fully biodegradable PLA/PCL/TOBC ternary composites via Pickering emulsion approach here, which is further use...
The volatile organic compounds (VOCs) released from recycled polyethylene terephthalate products has raised much concern in consideration of ecological safety. This work has established a reliable and effective headspace GC-flame ionization detection (HS-GC-FID) method for the determination of aromatic hydrocarbons (including benzene, toluene, ethy...
A highly sensitive pressure sensor with a sandwich structure is developed through one-step fabrication with a double nozzle FDM printer. Multiwalled carbon nanotubes (MWCNTs) and ionic liquid (IL) are introduced into polyvinylidene fluoride (PVDF) to obtain high β phase composites (named PIM), which serves as piezoelectric layer, and a conductive P...
It remains a challenge to achieve high sensitivity and a broad linear strain range simultaneously for wearable strain sensors. Specially, graphene‐based strain sensors always exhibit low sensitivity owing to the slippage of graphene flakes. To overcome this problem, Al³⁺ is used here as “mortars” for graphene flakes instead of polymers usually used...
Wearable ammonia sensors based on the flexible substrates find a wide applications in portable electronics and healthcare. However, the interfacial adhesion of sensing materials on the flexible substrates is always weak. Here, polyacrylonitrile (PAN) fabric is hydrolyzed in alkaline conditions to produce carboxyl groups on the surface, which improv...
Conductive fibers are key parts in smart textiles. Layer-by-layer (LbL) technique based on the alternating coating of graphene oxide (GO) and the adhesive layer is usually used to increase the conductivity of graphene coated fiber. However, the insulation of the adhesive layer may deteriorate the conductivity of graphene coated fiber. Here with the...
The specific recognition between DNA and single-walled carbon nanotube (SWCNT) has enabled wide applications, especially in the chiral sorting of SWCNT. However, the molecular recognition mechanism has not been fully understood. In our work, various DNA-SWCNT dispersions were prepared by ultrasonic dispersion method, and characterized by UV absorpt...
This work reports on a facile and efficient strategy for preparing a class of chromophores- including organic-inorganic functional hybrid materials. These hybrid materials are based on pyrene and octavinyl-polyhedral oligomeric silsesquioxane (OV-POSS), in which the positive vinyls in OV-POSS were heck coupling reacted with pyrenes. It was found th...
Graphene recently gained extensive interests in electroconductive fibers because of its excellent electrical conductivity. Generally, graphene coated conductive fibers are fabricated in two steps, first graphene oxide (GO) dip-coated to the surface of the fiber, then GO reduced to reduced graphene oxide (RGO). To enhance the conductivity of the abo...
A multidentate ligand chromophore, combining rhodamine, triazole, and pyridine units, was identified and developed for the first time. Using triazole and pyridine rings as coordinating functional recognition groups, it was expected to selectively recognize Sn²⁺ to form some stable 5-member or 6-member rings with nitrogen and oxygen atoms. Under the...
It is very important to obtain large-scale and high-quality graphene for its application. However, the efficient preparation of large-scale and defect-free graphene is difficult by using a general method. In this report, a conjugated ionic liquid (IL) is designed and synthesized, which is used as a green medium to easily exfoliate graphite into gra...
Two novel fluorene functionalized polyacetylenes with different conjugation bridge architectures (stilbene and azobenzene), poly[2-[4-vinyl-4′-(N-methyl, N-ethyl-yl propargyloxy) phenyl azo]-9,9-dioctylfluorene] (PC1), poly[2-[4-vinyl-4′-(N-methyl, N-ethyl-yl propargyl group) stilbene ethenyl]-9,9-dioctylfluorene] (PC2), were designed and prepared...
Recently, Organic white light emitting devices (OWLEDs) have attracted great interest in the flexible displays and solid state lighting devices. Here we report a kind of novel POSS-based white-light-emitting single molecular nanohybrid (POSS-WLED), which was precisely controllably prepared via click chemistry by simple controlling the feed ratio of...
A novel flower-like polyaniline/graphene hybrid (PANI-ATRGO) is prepared by a one-pot synthesis and used as electrode materials for supercapacitors. The structure, formation mechanism and electrochemical properties of such unique architecture are systematically investigated by combining Fourier transform infrared spectroscopy, Ultraviolet–visible a...
Two reactive dyes (P1 and P2) based on salicyladehyde‐4‐amino‐benzoylhydrazone, which show high sensitivity and selectivity in sensing Zn²⁺, were synthesized and used to modify nonwoven silk fabrics. The prepared silk fabric was then characterized by IR, UV‐Vis, and fluorescence measurements. The results showed that reactive dyes were chemically re...
A new trapezoidal functional polyacetylene with broadband absorption from the visible to the near infrared and excellent thermal stability was effectively prepared by molecular design and a controllable strategy. It is completely soluble in common organic solvents because the 6-ethynyl-2-methylquinoline copolymerized with phenylacetylene. The absor...
DNA-carbon nanotube (DNA-CNT) hybrids are nanometer-sized, highly-charged, rod-like molecules with complex surface chemistry, and their behaviors in aqueous solutions are governed by multifactorial interactions with both solvent and co-solutes. We have previously measured the force between DNA-CNTs as a function of their inter-axial distance in low...
The effect of surface functionalization of carbon materials on the morphology and performance of carbon/polymer composite materials for supercapacitor electrodes was investigated here. Three kinds of functionalized carbon fibers were prepared by the simple chemically modification of carbon fiber, named oxidated carbon fiber (OCF), amino-functionali...
A series of novel multifunctional polyacetylenes bearing oxadiazole and azo groups as molecular pendants were designed and synthesized via highly effective click chemistry. The resultant polymers showed good solubility in common organic solvents. The structure and properties of the resulting polymer were characterized and evaluated by FT-IR, 1H-NMR...
The solutions of cellulose diacetates (CDA) in ionic liquids, 1-butyl-3-methylimidazolium chloride ([BMIM]Cl), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4), 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]PF6) and 1-butyl-3-methylimidazolium formate ([BMIM]COOH), have been investigated to identify the solvent for optimal CDA fib...
Broadening the absorption spectra of dyes is an effective way to increase the energy conversion efficiency in dye-sensitized solar cells. Here POSS-based hybrids with broad-band absorbing properties were successfully prepared by using octavinyl-polyhedral oligomeric silsesquioxane (OV-POSS) and three organic molecules with their absorption band in...
Complexation of graphene oxide (GO) and cetyltrimethylammonium bromide (CTAB), a model amphiphile, was quantitatively studied to elucidate the governing forces and resulting structures of their self-assembly. We systematically varied pertinent self-assembly parameters, including GO size, mixing ratio, salt, and osmotic stress, and quantified the na...
Condensation of DNA-carbon nanotube (CNT) hybrids dispersed in aqueous solutions can be induced by elevated hybrid concentrations, salts, or crowding agents. DNA-CNT condensates exhibit either nematic ordering or amorphous aggregates, dependent on the nature of interhybrid interactions. This study employed X-ray diffraction (XRD) to determine nanos...
Three-dimensional (3D) chitosan/silk fibroin (CS/SF) porous composite scaffolds have been prepared by simply coating a thin layer of CS onto spunlaced SF scaffolds via hydrogen-bonding assembly technique, and they were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and m...
Hydroxyapatite (HAP) nanoparticles with uniform morphologies and controllable size were synthesized successfully by molecular template hydrothermal approach. The organic alcohols including ethanol, glycol, glycerol and butanol were used as templates to regulate the nucleation and crystal growth. The synthesized powders were characterized by X-ray d...
Three kinds of hybrids with different architectures including dumbbell-type, bead-type, and cross-linked structure, were prepared via the Heck reaction between octavinyl-polyhedral oligomeric silsesquioxane (OV-POSS) and different bromo-substituted aromatic amide monomers. The molecular architecture can be successfully achieved by simply varying th...
A convenient and efficient strategy for preparing active functional hybrid materials was proposed based on the investigation of controllable preparation of a serial of anthracene-containing organic-inorganic functional hybrid materials with active ethylene group. These functional hybrid materials with different active vinyls were controllable prepa...
The ordered three-dimensional arrays conjugative polyaniline–graphene composites were fabricated through in-situ chemical oxidative polymerization of aniline in the presence of amino-functionalized graphene sheets (AFG), in which polyaniline (PANI) polymerization is initiated by those amino groups on graphene. Therefore, the resulting PANI nanorod...
To further understand the relationship between the polymer structure and nonlinear optical (NLO) property, in this article, three fluorene-based triazole functional polymers with different linked chains were designed and controllably prepared by click chemistry method. The structures and properties of these polymers were characterized and evaluated...
Aminoglycosides are capable of expelling water molecules when forming a complex with DNA via electrostatic interaction. The "water-proof" nature of the complex leads to the formation of capsules, which possess hierarchical shell structures with a smooth and rigid outer layer and a viscoelastic inner layer.
Physical origin of DNA condensation by multivalent cations remains unsettled. Here, we report quantitative studies of how one DNA-condensing ion (Cobalt(3+) Hexammine, or Co(3+)Hex) and one nonDNA-condensing ion (Mg(2+)) compete within the interstitial space in spontaneously condensed DNA arrays. As the ion concentrations in the bath solution are s...
Single-stranded DNA is able to wrap around single-wall carbon nanotubes (CNT) and form stable DNA-CNT hybrids that are highly soluble in solution. Here we report quantitative measurements and analysis of the interactions between DNA-CNT hybrids at low salts. Condensation of DNA-CNT hybrids by neutral osmolytes leads to liquid crystalline phases, an...
The polyelectrolyte complexes formed by DNA and polycations have been widely used as non-viral vectors for gene delivery. The DNA complex prepared in aqueous solutions is usually controlled by kinetics. In this work, we demonstrated, by using salmon testes DNA (2000 bp), poly-(L-lysine) (PLL35), and poly(ethylene oxide)-b-Poly-(L-lysine) (PEO45-b-P...
AbstractA series of inorganic–organic molecular hybrids, poly(styrene‐co‐octavinyl‐polyhedral oligomeric silsesquioxane)s (PS‐POSSs), were synthesized, and their structures and properties were characterized by FTIR, 1H‐NMR, 29Si‐NMR, XRD, optical microscopy (OM), and atomic force microscopy (AFM). The chemical incorporation of POSS into polymer mat...
Charge transfer complex strongly affects the optical transparency of polyimide film. Here, solution behavior of a polyimide derived from 3,3′,4,4′ biphenyltetracarboxylic dianhydride and 1,4‐bis(3‐aminopropyl)piperazine in acetic acid, chloroform, and their mixed solvents is investigated in detail by light scattering. It is found that the polyimide...
The binary nano-CaCO3/polypropylene (PP), poly(ethylene terephthalate) (PET) fibers/PP and ternary nano-CaCO3/PET fibers/polypropylene composites were prepared by melt blending method, and their structure and mechanical properties were investigated. The results show that the ternary nano-CaCO3/PET fibers/PP composite displays significantly enhanced...
The phase separation of ionic liquids (ILs) in water is studied by laser light scattering (LLS). For the ILs with longer alkyl chains, such as [C(8)mim]BF(4) and [C(6)mim]BF(4) (mim = methylimidazolium), macroscopic phase separation occurs in the mixture with water. LLS also reveals the coexistence of the mesoscopic phase, the size of which is in t...
Block copolymers containg poly(ethylene oxide) (PEO) have been widely used in biomedical applications. The PEO block is generally treated as the hydrophilic moiety. In this work, we demonstrated that PEO could serve as the “hydrophobic” block under certain conditions by using PEO-b-poly(vinyl alcohol) (PEO-b-PVA) as the example. Water is a non-sele...
The solubility and chain conformation of different types of homopolymers in low viscosity ionic liquids (ILs), 1-allyl-3-methylimidazolium chloride ([AMIM][Cl]) at 50 °C and 1-butyl-3-methylimidazolium formate ([BMIM][COOH]) at 25 °C, were studied by laser light scattering (LLS). For neutral polymers, such as polyvinyl alcohol and polysulfonamide,...
Organic solvents offer a new approach to formulate DNA into novel structures suitable for gene delivery. In this study, we examined the in situ behavior of DNA in N, N-dimethylformamide (DMF) at low concentration via laser light scattering (LLS), TEM, UV absorbance and Zeta potential analysis. Results revealed that, in DMF, a 21bp oligonucleotide r...
The reentrant condensation of 21-bp oligonucleotide in the presence of spermidine was investigated by laser light scattering and capillary electrophoresis. 21-bp oligonucleotide showed a bimodal distribution in 1 × TE buffer, with the slow mode being the characteristic diffusion of polyelectrolyte in solution without enough salt. At the fixed sperm...
Poor compatibility was the major drawback of polymer mixtures when used as DNA separation media. Using poly(ethylene oxide)-b-poly(N, N-dimethylacrylamide) (PEO(44)-b-PDMA(88)) and PEO (M(w): 1.3 MDa) as an example, we demonstrated the concept that the compatibility was significantly improved when mixing a homopolymer with its copolymer. Laser ligh...
As part of our continuing research work, studies toward the self-aggregation behaviour of amphiphilic triblock copolymers containing β-CD-Pluronic F127 polyrotaxane as a central block and hydrophilic brush-like PPEGMA as flanking blocks in aqueous solution were conducted by using dynamic and static light scattering (DLS and SLS) analyses and transm...
A kind of novel amphiphilic triblock copolymers containing polyrotaxane (PR) as a central block was synthesized via the ATRP of poly(ethylene glycol) methyl ether methacrylate (PEGMA) initiated with polypseudorotaxanes made from a distal 2-bromopropionyl end-capped Pluronic F127 with a varying amount of β-CDs in the presence of Cu(I)Cl/N,N,N′,N″,N″...
The behavior of poly(ethylene oxide)-block-poly(N,N-dimethylacrylamide) (PEO-b-PDMA) in aqueous solution at dilute concentrations was studied by laser light scattering. Even though water was a nonselective solvent for both PEO and PDMA blocks, PEO-b-PDMA formed a certain loose associate in aqueous solutions. Different from the micellization of bloc...
A noncovalent strategy is proposed for endowing responseless catanionic surfactant (a mixture of cationic and anionic surfactants) aggregates with responsive abilities by addition of a responser. In this strategy, the composition of catanionic surfactant can be carefully selected to render aggregates sensitive to added responsers, and the responser...
A series of novel well-defined supramolecular ABA triblock copolymers of polyrotaxane are synthesized via atom transfer radical polymerization (ATRP) of 2-(dimethylamino)ethyl methacrylate (DMA) initiated by a polypseudorotaxane initiator of α-cyclodextrins (α-CDs) and PEG. The molecular structure of the ABA triblock copolymer with a polyrotaxane a...
Two types of Gemini surfactants containing a disulfide bond in the spacer, sodium dilauroyl cystine (SDLC) and sodium didecamino cystine (SDDC), were synthesized, and their surface properties and aggregation behavior in aqueous solution were studied by means of surface tension measurements, dynamic light scattering (DLS), transmission electron micr...
Citations
... However, the elongation at break increased with the increase of blending content (Supplementary Figure S2A). PCL has a toughening ability, which can enhance the elongation at break of the material, but may weaken the tensile strength to some extent [42,43]. In general, after adding PCL, the tensile strength of each group was lower than that of pure HCPU-NHS, and the optimal content was 8 wt.%, which showed the highest tensile strength. ...
... [9][10][11][12][13] Benzene, toluene, ethylbenzene, styrene and xylene may exist in the recycled product as thermal or thermal-oxidative degradation products of PET. 14,15 The regenerated PET fibers may contain VOCs for the extreme condition during the recycling process. 4 However, there is no sufficient results on the evaluation of VOCs emitting from fibers at present specially from regenerated PET fibers. ...
... However, advancements in material science have led to the development of specialized filaments that offer specific sensing capabilities. For instance, conductive filaments infused with metals or carbon can be used to create resistive or capacitive sensors [96][97][98]. These filaments allow for the fabrication of sensors that can measure parameters like temperature, pressure, or humidity. ...
... Negative ΔR/R0 values occurring during the stretching−releasing cycle were explained by the fact that at a low strain, the ΔR and ΔR/R0 values were relatively low and they were easily influenced by the conductive network rearrangement. A similar phenomenon was observed in some reported articles [55,56]. At 30% strain, ΔR/R0 value of the CS-0.015/SEBS ...
... Biosensors 2024, 14, 191 2 of 12 safety. Wearable devices equipped with flexible electronic components offer an efficient and convenient solution for in situ real-time NH 3 monitoring [15,16]. ...
... Combined with casting and printing techniques, they reduce fabrication steps, time, cost, and material waste in the deposition of sensing material compared to processes such as lithography and multistep coating. 7 Temperature sensors have been fabricated using different materials, structure and fabrication techniques, layer-by-layer GO, 8 electrospun poly-(vinylidene fluoride) (PVDF)/silver NPs, 9 laser direct writing of carbonized cellulose, GO and silver, 10−12 inkjet-printed graphene/PEDOT:PSS, 13 and screen printed graphene/ BiFeO 3 . 14 However, limitations with nanocomposites, such as homogeneity of dispersions and deposited or formulated structure, biocompatibility, biodegradability, and high integration, remain a challenge. ...
... POSS is widely used to prepare new catalysts due to its thermal and chemical stability, nanometer size, large specific surface area, active sites, and compatibility with organic and inorganic materials [132,133]. There are two types of POSS-based catalytic systems: ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/933478161985536-1599569945125_Q64/Xuerui-Gong.jpg)
... The resulting materials are expected to exhibit enhanced properties compared to existing methods. Figure 79 shows the sensing mechanism of 72 with Sn 2+ [88]. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/277777568813064-1443238741729_Q64/Zhengquan-Yan.jpg)
... Then composites with better graphene dispersion were prepared by solution-cast method. Recently, a direct exfoliation of natural graphite with the assistance of a conjugated IL and microwave irradiation was developed by Wang et al. [24] to prepare IL modified graphene. The modified graphene is used to prepare composites with polyetherimide (PEI) by solution mixing and lead to a sharp decrease of 11 orders of magnitude in volume resistivity for PEI composite with only 0.75 wt% modified graphene comparing to neat PEI. ...
... The propargyl-terminated polypropylene glycol (P t PG) was synthesized in several steps according to Scheme 1. p-Propargyloxybenzoic acid(I) and p-propargyloxybenzoyl chloride(II) were synthesized by the similar procedures reported by Zhao, et al. [26] 2.3.1 | Synthesis of p-propargyloxybenzoic acid (I) p-Hydroxybenzoic acid (45.58 g, 330 mmol), potassium iodide (68.06 g, 410 mmol), 300 ml of NaOH solution (1 molÁL À1 ), and 500 ml of ethanol were added to a 1000 ml four-necked flask and stirred for 15 min until the solid reagents completely dissolved. Then chloropropyne (30.18 g, 405 mmol) was dropwise added and the reaction mixture refluxed at 60 C(ca) for 72 h. ...
