Li Wang's research while affiliated with Shanghai Jiao Tong University and other places

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Publications (40)


Dual-emissive BT-CP-TD covalent organic polymers for detecting furacillin, white light emission and information encryption
  • Article

June 2024

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6 Reads

Microchemical Journal

Meiling Ye

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Lijuan Kuang

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Xinyi Wang

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[...]

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Yongmei Zhu
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SEM (a and b) and AEM (d and e) images of COPPDAN-BTT (a and d) and COPPDAN-TF (b and e). FTIR spectra of COPPDAN-BTT (c) and its monomers. XRD pattern of COPPDAN-BTT (f)
Fluorescence spectra of aqueous solutions of (a) BTT, (b) PDAN and (c) TF. Fluorescence excitation and emission spectra of aqueous solutions of (d) COPPDAN-BTT and (e) COPPDAN-TF. (f) CIE chromaticity diagrams of aqueous solutions of COPPDAN-BTT and COPPDAN-TF. Fluorescence emission spectra of (g) COPPDAN-BTT and (h) COPPDAN-TF powders. (i) CIE chromaticity diagrams of COPPDAN-BTT and COPPDAN-TF powders. Insets: Photographs of COPPDAN-BTT and COPPDAN-TF under a UV lamp at 365 nm
Photographs of COPPDAN-BTT dissolved in different solvents (from left to right: H2O, DMA, DMF and THF) under visible light (a) and a UV lamp (b). (c) Fluorescence emission spectra of COPPDAN-BTT in different solvents. COPPDAN-TF dissolved in different solvents (from left to right: H2O, DMA, DMF and THF) under visible light (d) and a UV lamp (e). (f) Fluorescence emission spectra of COPPDAN-TF in different solvents. The dissolution concentration is 1 mg mL⁻¹ (a, b, d and e) and the fluorescence test concentration is 120 μg mL⁻¹ (c and f)
(a) Fluorescence emission spectra after the addition of different concentrations of FZD to COPPDAN-BTT (λex = 370 nm). (b) Linear plot between the FZD concentration and I0/I. (c) Fluorescence emission spectra of COPPDAN-BTT in the presence of FZD and other interferents (Na⁺, K⁺, Ag⁺, Fe³⁺, Al³⁺, Hg²⁺, ENR, AA, L-dopa, tBHQ, AMX, AK, MT, FT). (d) Fluorescence emission spectra (λex = 350 nm) after the addition of different concentrations of FZD to COPPDAN-TF. (e) Linear plot between the FZD concentration and I0/I. (f) Fluorescence emission spectra of COPPDAN-TF in the presence of FZD and other interferents (Na⁺, K⁺, Ag⁺, Fe³⁺, Al³⁺, Hg²⁺, ENR, AA, L-dopa, tBHQ, AMX, AK, MT, FT). The concentration of FZD was 10 μg mL⁻¹ and the concentration of all other interferents was 100 μg mL⁻¹
After 5 μL of different concentrations of FZD solution (0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.5 mg mL⁻¹) were dropped on the test strips, fluorescence changes of COPPDAN-BTT and COPPDAN-TF test paper with the addition of FZD under a UV lamp at 365 nm

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A fluorescent sp2c-covalent organic polymer with aggregation-induced emission unit to suppress aggregation-induced quenching for sensing furazolidone
  • Article
  • Full-text available

January 2024

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13 Reads

Sensors and Diagnostics

Sensors and Diagnostics

Furazolidone (FZD) is a nitrofuran antibiotic that has an inhibitory effect on a variety of Gram-negative and positive bacteria. However, excessive use of FZD can produce major adverse responses and irreversible harm to the central nervous system, so it is necessary to develop a simple, rapid, highly selective and sensitive method for the detection of FZD. Here, a sp²c-covalent organic polymer (COPPDAN-BTT) containing benzotrithiophene was synthesized for fluorescence sensing FZD. The benzotrithiophene in the BTT monomer is a typical aggregation-induced quenching (ACQ) fluorophore, and the cyanide diphenylethylene unit has certain aggregation-induced emission (AIE) properties. The connection of the ACQ fluorophore and the AIE fluorophore can fully improve the ACQ degree of COPPDAN-BTT. Under excitation at 370 nm, COPPDAN-BTT exhibits green fluorescence at 500 nm. Based on the internal filtering effect, COPPDAN-BTT was used for FZD detection. The I0/I showed a good linear relationship with the concentration of FZD in the range of 0.034–20 μg mL⁻¹ (0.149–88.9 μM), and the detection limit was as low as 0.011 μg mL⁻¹ (0.049 μM). Based on the AIE properties of COPPDAN-BTT, a fluorescent test strip was prepared for visual detection of FZD. This work provides a simple yet effective method for detection of FZD and improving the fluorescence of COPs.

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Citations (24)


... It can promote the optimal allocation of forestry resources (Hall et al., 2019;Tan & Wang, 2023). People can accurately predict and master the planting and growth of forest trees through big data analysis, 5G mobile Internet, new forest products, scientific cultivation, and other technologies (Vishnoi & Goel, 2024;Wei et al., 2024). ...

Reference:

Analysis of green total factor productivity in China's forestry industry: Technological, organizational, and environmental framework for sustainable economic development
The dawn of intelligent technologies in tea industry
  • Citing Article
  • February 2024

Trends in Food Science & Technology

... These methods are not suitable for rapid screening and on-site detection of trace heavy metal ions in foods. To solve these problems, many new analytical methods have been reported, such as electrochemical methods (Pan et al., 2024), colorimetric methods (Sharifi et al., 2022), and fluorescence methods (Chen et al., 2022). Compared with traditional analytical methods, these methods have the advantages of simple operation, high sensitivity, and high accuracy . ...

A target-triggered ultra-sensitive aptasensor for simultaneous detection of Cd2+ and Hg2+ using MWCNTs-Au NPs modified electrode
  • Citing Article
  • December 2023

... Covalent grafting of epigallocatechin (EGCG) with low methoxy pectin (LMP) coatings on grapes reduced weight loss and improved adhesion. The pyrogallol structure of EGCG contributed to the enhancement of the adhesion and wetting properties of the pectin to the fruit surface via strong bond formation and crosslinking [131]. ...

Bioadhesive and antibacterial edible coating of EGCG-grafted pectin for improving the quality of grapes during storage
  • Citing Article
  • October 2022

Food Hydrocolloids

... In particular, niosome formation depends on the hydrophilic-lipophilic balance (HLB) that is a dimensionless parameter and indicates the lipid or water solubility of the surfactant through the balance between its hydrophilic head and hydrophobic tail; HLB can range from 0 to 20, but only values between 4-8 are suitable for forming niosomes [10]. Niosomes are widely used to encapsulate different kinds of molecules and active compounds, such as proteins and peptides [11], vaccines [12][13][14], antibiotics [15], and anticancer drugs [16]. Furthermore, niosomes can be used through different routes of administration, such as intravenous, intramuscular [17], and topical (dermal, ocular, oral, etc.) [18], modifying their properties during the production process and/or adding functional compounds to their structure. ...

Nanosized niosomes as effective delivery device to improve the stability and bioaccessibility of goat milk whey protein peptide
  • Citing Article
  • July 2022

Food Research International

... K. Koch), native to the lower Mississippi River in North America and the Gulf of Mexico, belongs to the Juglandaceae family, which also includes other tree nuts such as walnuts and hickory nuts. [1][2][3] As a long-standing tree nut, it possesses substantial ecological and economic importance. Pecan nuts, renowned for their unique texture and flavor characteristics, are incorporated into a broad spectrum of food products, including bakery and confectionery items, and are also frequently utilized in salads, main courses, as dessert toppings, and as a snack (raw, roasted, or salted). ...

Investigation on physicochemical, structural, and functional properties of protein from pecan (Carya illinoinensis (wangenh.) K. Koch) treated by three different peeling methods

Journal of Food Measurement and Characterization

... 1 Previous study revealed that the inhibitory actions on ⊍-glucosidase, dipeptidyl peptidase IV and ⊍-amylase were more pronounced in Alcalase and papain hydrolysates than in whey protein from goat milk. 5 However, excessive enzymatic hydrolysis can sometimes compromise certain functional characteristics of a protein or even introduce undesirable flavors in the corresponding hydrolysates. 6 Therefore, it is crucial to control the degree of hydrolysis (DH) when using enzymatic hydrolysis to modify the functional properties of proteins. ...

Characterization of structure, physicochemical properties, and hypoglycemic activity of goat milk whey protein hydrolysate processed with different proteases
  • Citing Article
  • February 2022

LWT

... In a study conducted by Fan et al. [108], the impact of various extraction methods on the antibacterial and antioxidant properties of phenolic compounds found in AN was assessed. The results indicated that the MIC (minimum inhibitory concentration) values for Streptococcus mutans, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa were 2.50, 5.00, 15.00, and 25.00 mg/mL, respectively. ...

Effects of different extraction on the antibacterial and antioxidant activities of phenolic compounds of areca nut (husks and seeds)

Journal of Food Measurement and Characterization

... Batch-to-batch variability affects performance, and environment-friendly synthesis of water-soluble derivatives is crucial. Further research should explore nanoparticles, nanocarriers, cross-linking techniques, multifunctional hydrogels, and derivatization approaches [126]. ...

Electrostatically self-assembled filamentous sodium alginate/ε-polylysine fiber with antibacterial, bioadhesion and biocompatible in suturing wound
  • Citing Article
  • December 2021

International Journal of Biological Macromolecules

... This method was very effective for the loading of Cur into the sodium caseinate owing to the self-assembly properties of casein including its dissociation at pH = 12 and re-association after neutralization enabling the Cur encapsulation (Pan, et al., 2014). The pH-shifting was also employed to prepare goat milk casein (GMC)-Cur complexes (Du et al., 2022). At first, the GMC nanoparticles were fabricated by the pH-shifting method and then were loaded with different concentrations of Cur (0.2-1.0 mg/mL). ...

pH-shifting formation of goat milk casein nanoparticles from insoluble peptide aggregates and encapsulation of curcumin for enhanced dispersibility and bioactivity
  • Citing Article
  • November 2021

LWT

... The prevalent use of vinyl ester as an acyl donor in enzymatic esterification can be attributed to the facile conversion of vinyl alcohol, generated during the reaction, to acetaldehyde. This allows for the easy elimination of acetaldehyde from the reaction system, thereby shifting the equilibrium toward product formation [40,43]. Additionally, the carbon chain length of the acyl donor significantly influences the synthesis of EGCG esterification products. ...

Structural characterization and antioxidant property of enzymatic‐transesterification derivatives of (−)‐epigallocatechin‐3‐O‐gallate and vinyl laurate

Journal of Food Science