Yao Gu

Jiangnan University

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Jing Luo

Jiangnan University

Ye Zhu

Jiangnan University

Xiaoya Liu

Southern University of Science and Technology

Liman Liang

Hebei Normal University of Science and Technology

Kui Niu

Hebei Normal University of Science and Technology

Tianxi Liu

Jiangnan University

Cuige Zhang

Anhui Polytechnic University

Qingqing Zhang

Jiangnan University

Xiaoming Zhang

Jiangnan University

Xiaoya Liu

Tianjin University of Traditional Chinese Medicine

Cooperative Institutions

Jiangnan University

Chinese Academy of Sciences

Ministry of Education of the People's Republic of China

Shanghai Jiao Tong University

Zhejiang University

Huazhong University of Science and Technology

Donghua University

Wuxi Institute of Technology

State Key Laboratory of Food Science and Technology

Jilin University

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Green Synthesis of Water-Compatible Fluorescent Molecularly Imprinted Polymeric Nanoparticles for Efficient Detection of Paracetamol

ACS Sustainable Chemistry & Engineering (2018)

Jing Huang Jiexiang Tong Jing Luo Ye Zhu Yao Gu

In this work, one-pot green synthesis of a novel kind of water-compatible fluorescent molecularly imprinted polymer nanoparticle for selective optosensing of paracetamol was developed via macromolecular assembly of an amphiphilic fluorescent copolymer and in situ photo-cross-linking. Amphiphilic photo-cross-linkable and fluorescent copolymers containing carbazole groups were synthesized and could coassemble with paracetamol (PCM, template molecule) and photoinitiator in aqueous solution. The obtained photo-cross-linkable fluorescent nanoparticles were then cross-linked triggered by UV-irradiation, generating the hydrophilic and fluorescent molecularly imprinted polymer nanoparticles (FMIP nanoparticles) in aqueous media. The whole procedure was carried out at mild working condition, which is facile, green, and energy-saving. The resulting FMIP nanoparticles showed high selectivity toward PCM and obvious fluorescence quenching, induced by template-binding, in water and were a kind of efficient fluorescent chemosensor for the sensing of PCM. A wide linear range over PCM concentration from 4 to 1000 μM with a detection limit of 1.0 μM has been demonstrated using FMIP nanoparticles as chemosensor. Moreover, a rapid response of less than 2 min has been demonstrated. Finally, such a chemosensor based on FMIP nanoparticles was also successfully employed for the detection of PCM in commercial PCM tablets as well as urine samples.

Molecularly imprinted polymer

Molecular imprinting

Carbazole

10.1021/acssuschemeng.8b00823

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Citations (33)

Reactive particles from in situ silane‐polycondensation‐induced self‐assembly of poly(styrene‐alt‐maleic anhydride) as toughener for epoxy resins

Journal of Applied Polymer Science (2019)

Wei Wei Yuqing Cui Xiaojie Li Yao Gu Xiaoma Fei

ABSTRACT The partial aminolysis of poly(styrene‐ alt ‐maleic anhydride) (SMA) with 3‐aminopropyltriethoxysilane (APTES) was carried out followed by in situ hydrolytic condensation of the silane, for inducing the self‐assembly of SMA to prepare an organic–inorganic hybrid colloidal particle (SMA‐APTES). The obtained SMA‐APTES particles were then employed as a toughener for modifying diglycidylether of bisphenol A/anhydride thermoset. When the additive amount of the modifier was 5 wt %, an optimal overall performance was achieved. Compared to neat epoxy thermoset, the tensile strength, elongation‐ at‐break, impact strength, and fracture toughness were increased by 67.6, 159, 170.5, and 230.9%, respectively. Although SMA‐APTES particles inherently had low glass‐transition temperature ( T g ) and thermal stability, the T g and thermal stability of above case were comparable to that of neat epoxy resin. It was contributed by the remarkable increase in the crosslink density offsetting this shortage. Therefore, SMA‐APTES particle was proved to be an effective and promising modifier for epoxy thermoset. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47565.

Thermosetting polymer

Maleic anhydride

Thermal Stability

10.1002/app.47565

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Citations (9)

Preparation of Graphene Oxide/Polymer Hybrid Microcapsules via Photopolymerization for Double Self-Healing Anticorrosion Coatings

ACS Applied Materials & Interfaces (2024)

Kaiyun Wu Yaxin Chen Qingqing Zhang Yao Gu Ren Liu

In this work, graphene oxide (GO)/polymer hybrid microcapsule-loaded self-healing agents were prepared via the combination of the emulsion template method and photopolymerization technology. The incorporation of GO in the microcapsule shell not only improved the impermeability, mechanical property, and solvent resistance property of the microcapsules significantly but also endowed the microcapsules with photothermal conversion property. By incorporating GO/polymer hybrid microcapsules in water-borne epoxy resin, a novel kind of anticorrosion coating with a double self-healing property was successfully fabricated. When the coating was scratched, the linseed oil (LO) encapsulated in the microcapsules could fill the crack, and the photothermal conversion property of GO could promote the molecular chain movement of the damaged area under near-infrared (NIR) irradiation to realize the close of the crack. Based on the filling of LO and photothermal conversion-induced scratch narrowing, the "filling" and "close" double self-healing effect can be realized under temporal NIR irradiation, which could lead to the complete recovery of the scratched coating. The |

Self-healing material

10.1021/acsami.4c07593

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CO₂-switchable emulsions with controllable size and viscosity

Chemical Science (2023)

Jianzhong Jiang Huaixin Li Yao Gu

CO2-responsive emulsions have attracted considerable attention in recent years because of their biocompatibility and easy removal of CO2. However, most CO2-responsive emulsions are only used in stabilization and demulsification processes. In this paper, we report CO2-switchable oil-in-dispersion (OID) emulsions co-stabilized with silica nanoparticles and anionic NCOONa, in which the required concentrations of NCOONa and silica particles were as low as 0.01 mM and 0.0001 wt%, respectively. Besides reversible emulsification/demulsification, the aqueous phase containing the emulsifiers was recycled and reused with the CO2/N2 trigger. More importantly, the properties of the emulsions, such as droplet sizes (40-1020 μm) and viscosities (6-2190 Pa s), were intelligently controlled by the CO2/N2 trigger, and meanwhile reversible conversion between OID emulsions and Pickering emulsions was achieved. The present method offers a green and sustainable way to regulate the emulsion states, which enables smart control of emulsions and widens their potential applications.

Pickering emulsion

Aqueous two-phase system

Biocompatibility

10.1039/d3sc00228d

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Citations (7)

Chelating-Template-Assisted in Situ Encapsulation of Zinc Ferrite Inside Silica Mesopores for Enhanced Gas-Sensing Characteristics

ACS Applied Materials & Interfaces (2016)

Kui Niu Liman Liang Fei Peng Fan Zhang Yao Gu

A facile in situ approach has been designed to synthesize zinc ferrite/mesoporous silica guest-host composites. Chelating surfactant, N-hexadecyl ethylenediamine triacetic acid, was employed as structure-directing agent to fabricate mesoporous silica skeleton and simultaneously as complexing agent to incorporate stoichiometric amounts of zinc and iron ions into silica cavities. On this basis, spinel zinc ferrite nanoparticles with grain sizes less than 3 nm were encapsulated in mesoporous channels after calcination. The silica mesostructure, meanwhile, displayed a successive transformation from hexagonal p6mm through bicontinuous cubic Ia3̅d to lamellar phase with increasing the dopant concentration in the initial template solution. In comparison with zinc ferrite nanopowder prepared without silica host, the composite with bicontinuous architecture exhibited higher sensitivity, lower detection limit, lower optimum working temperature, quicker response, and shorter recovery time in sensing performance toward hydrogen sulfide. The significant improvements are from the high surface-to-volume ratio of the guest oxides and the three-dimensional porous structure of the composite. We believe the encapsulation route presented here may pave the way for directly introducing complex metal oxide into mesoporous silica matrix with tailorable mesophases for applications in sensing or other fields.

Zinc ferrite

Encapsulation

10.1021/acsami.6b06689

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Citations (13)

High internal phase pickering emulsions stabilized by pea protein isolate-high methoxyl pectin-EGCG complex: Interfacial properties and microstructure

Food Chemistry (2021)

Tingting Feng Xuejiao Wang Xingwei Wang Xiaoming Zhang Yao Gu

Pea protein

Pectin

Pickering emulsion

10.1016/j.foodchem.2021.129251

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Citations (131)

Fabrication and Photoluminescent Properties of ZnO/Mesoporous Silica Composites Templated by a Chelating Surfactant

Langmuir (2011)

Kui Niu Liman Liang Yao Gu Lei Ke Fang Duan

A novel anionic surfactant-templated synthesis of ZnO/mesoporous silica nanocomposites has been carried out by using N-hexadecylethylenediamine triacetate (HED3A), a triprotic surfactant, as the structure-directing agent. The chelating template can capture zinc ions in solution and then direct the mesophase formation, enabling an amount of zinc oxide to be embedded in the porous silica matrix during calcination. With variation of the molar ratio of Zn(2+) to HED3A in the template, a series of composites with different doping amounts were obtained after the removal of organic components. The variation of the zinc ion concentration in the initial template solution induces an evolution of the silica mesophase, presumably due to the change in electronegativity of the HED3A headgroup caused by the chelating effect. Spectroscopic studies show a strong host-guest interaction between the silica pore walls and ultrafine ZnO nanoparticles. The photoluminescence properties of the resulting composites exhibit a size-dependent light emission and quantum-confinement effect of ZnO, accompanied by an infrequent violet emission originating from the ZnO-SiO(2) interface.

10.1021/la202820g

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Citations (21)

Polymer vesicles prepared from the ( l -phenylalanine ethyl ester)-modified hyaluronic acid

Materials Letters (2015)

Cuige Zhang Rongli Zhang Ye Zhu Wei Wei Yao Gu

10.1016/j.matlet.2015.10.052

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Citations (8)

4D-Printed Bionic Soft Robot with Superior Mechanical Properties and Fast Near-Infrared Light Response

ACS Applied Polymer Materials (2024)

Xuemeng Xia Jian Meng Jingjing Qin Guozheng Yang Pengyang Xuan

Inspired by natural organisms, a four-dimensional (4D)-printed starfish-like bionic soft robot (SBSR) was effectively prepared by integrating three-dimensional (3D) printing with smart hydrogels. The body of the SBSR is composed of a reduced graphene oxide-poly(N-isopropylacrylamide) hydrogel (rGO-PNH) with superior mechanical properties. In addition, the enhanced photothermal conversion effect was obtained by the reduction of graphene oxide nanosheets after the 3D printing process. Cylindrical actuators prepared using rGO-PNH exhibited bending and orientation toward the light source within 20 s of exposure to near-infrared light, thus demonstrating the rapid photoresponsivity of rGO-PNH. Furthermore, the 4D-printed SBSR showcased effective grasping, lifting, and releasing of objects by mimicking the predatory behavior of starfish. This study would provide insights into the development of responsive materials in 4D printable bionic soft robots and their applications in areas such as biomimetic devices and artificial muscles.

Biomimetics

3d printed

10.1021/acsapm.3c02936

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Citations (9)

Study on Synthesis of P(tBMA-Br)_4 and Dynamics

Guangzhou Chemical Industry (2013)

Yao Gu

The tetrakis(2-bromoisobutyrate) pentaerythritolate(PT-Br) was synthesized by reaction of pentaerythritol with 2-bromoisobutyrate.A solution ATRP of tBMA was studied using CuCl as catalyst,PMDETA as ligand and PT-Br as initiator to synthesize star polymer P(tBMA-Br) 4.In order to study the characters of P(tBMA-Br) 4,the hydrolysis of the P(tBMA-Br) 4 was finished under room temperature in the presence of NaOH.It was found that the molecular weight of hydrolyzed product was nearly 1 /4 of the molecular weight of P(tBMA-Br) 4 based on the analysis of GPC.It meant the chain length of 4-arm was similar.

Pentaerythritol

Molar mass distribution

Star polymer

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