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第六届国际高分子化学学术讨论会

作者： Bicheng Yao Jing Zhi Sun Anjun Qin Ben Zhong Tang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University Guangdong Innovative Research Team State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Department of Chemistry Institute for Advanced StudyInstitute of Molecular Functional Materialsand State Key laboratory of Molecular NeuroscienceThe Hong Kong University of Science & TechnologyClear Water Bay

The study on alkyne hydrothiolations for the construction of small molecules was reported half a century ago.1 While,this reaction was almost forgotten until Bowman and co-workers developed highly

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synthesis OF AROMATIC DIAMINE-BASED BENZOXAZINES AND EFFECT OF THEIR BACKBONE STRUCTURE ON THERMAL AND FLAMMABILITY PROPERTIES OF POLYMERS

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Chinese Journal of Polymer Science 2013年第10期31卷 1359-1371页

作者： Tao Zhang Hong-qiang Yan Zheng-ping Fang Mao Peng MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Department of Packaging Engineering College of Materials and Textiles Zhejiang Sci-tech University Lab of Polymer Materials and Engineering Ningbo Institute of Technology Zhejiang University

Three kinds of novel aromatic diamine-based benzoxazines containing naphthalene, propane-2,2-diyldibenzene and neopentyl groups in the backbone, respectively （designated as BAPNCP, BAPBACP and BAPNPGCP, respectively）, were synthesized and characterized. In addition, the effects of backbone structures on curing behaviors of the monomers and thermal and flammability properties of the resulting polymers were systematically studied. The results indicated that BAPNPGCP displayed the highest enthalpy of the curing reaction associated with the ring-opening of benzoxazine, which was due to the effect of benzoxazine ring content per unit mass. Interestingly, the 5 wt% weight loss temperature and char residue after thermogravimetric test for poly（BAPNPGCP） were 8 ℃ and 7% higher than those of poly（BAPBACP）. Meanwhile, the total heat release of poly（BAPNPGCP） was less than half of that for poly（BAPBACP）, indicating the substantial effect of benzoxazine ring content on flammability and char formation. Furthermore, it was found that poly（BAPNCP） gave the best thermal stability and flame retardancy, which was due to the synergistic effect between naphthalene group and benzoxazine ring content. This study provides new insight into the curing behavior of benzoxazine and further understanding on the high performance of polybenzoxazine.

关键词： Aromatic diamine-based benzoxazine Thermal properties Flammability properties.

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Thiol-yne click polymerization

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Chinese Science Bulletin 2013年第22期58卷 2711-2718页

作者： YAO BiCheng SUN JingZhi QIN AnJun TANG Ben Zhong MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University Department of Chemistry Institute for Advanced StudyInstitute of Molecular Functional MaterialsThe Hong Kong University of Science & Technology

The research on using thiol-ene click reaction to synthesize sulfur-containing polymers with topological structures and advanced functional properties is a hot topic. However, the application of the thiol-yne reaction in the functional polymer preparation is limited and the thiol-yne click polymerization is to be further developed. In this review, we summarized recent research efforts on using thiol-yne click polymerization to synthesize polymers with topological structures. The sulfur-containing polymers were facilely prepared by photo-and thermo-initiated, amine-mediated, and transition-metal-catalyzed thiol-yne click polymerizations. These polymers are promising to be used as drug-delivery vehicles, high refractive index optical materials, photovoltaic materials, and biomaterials etc.

关键词：含硫聚合物巯基过渡金属催化拓扑结构反应合成合成聚合物功能特性应用程序

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Graphene fibers: A promising multifunctional material

Graphene fibers: A promising multifunctional material

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2013 Spring Technical Conference of the Fiber Society

作者： Gao, Chao Xu, Zhen Hu, Xiaozhen MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 China

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Macromol. Rapid Commun. 9/2014

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macromolecular Rapid Communications 2014年第9期35卷

作者： Xinfeng Tao Chao Deng Jun Ling MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China

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Antiba+cterial Activity of Two-Dimensional MoS2 Sheets

Antiba+cterial Activity of Two-Dimensional MoS2 Sheets

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中国真空学会2014年年会

作者： Tao Liang Xi Yang Jie Li Chunyan Ma Yingying Zhang Hongzheng Chen Nobutaka Hanagata Huanxing Su Mingsheng Xu Interdisciplinary Laboratory for Nanoscale Science and Technology National Institute for Materials Science1-2-1 SengenTsukubaIbaraki 305-0047Japan State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences University of MacauMacau SARP. R. China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027P. R. China

Graphene,as a typical two-dimensional layered material,possesses extraordinary electronic and optical properties that render it for a wide range of potential applications including biomedicine[1].Inspired by the graphene research and development,graphene-like two-dimensional materials(2DMats)also show application potentials in biomedicine due to their unique properties[2-4].However,environmental and biological infuences of these 2DMats remain to be *** we reported the antibacterial activity of two-dimensional(2D)chemically exfoliated MoS2(ce-MoS2)sheets[5].We found that the antibacterial activity of ce-MoS2 sheets was much more potent than that of the raw MoS2 powders used for the synthesis of ce-MoS2 sheets possibly due to the 2D planar structure(high specifc surface area)and higher conductivity of the *** investigated the antibacterial mechanisms of the ce-MoS2 sheets and proposed their antibacterial *** found that the ce-MoS2 sheets could produce reactive oxygen species(ROS),different from previous report on graphenebased ***,the oxidation capacity of the ce-MoS2 sheets toward glutathione oxidation showed a time and concentration dependent trend,which is fully consistent with the antibacterial behaviour of the ce-MoS2 *** results suggest that antimicrobial behaviors were attributable to both membrane and oxidation *** antibacterial pathways include MoS2-bacteria contact induced membrane stress,superoxide anion(O2·–)induced ROS production by the ce-MoS2,and the ensuing superoxide anion-independent *** study thus indicates that the tailoring of dimension of nanomaterials and their electronic properties would manipulate antibacterial activity.

关键词： two-dimensional MoS2 sheets chemically exfoliate antibacterial activity biomedicine

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Cover Picture: Label‐free Fluorescent Sensor for Probing Heparin‐Protein Interaction Based on Supramolecular Assemblies (Chin. J. Chem. 1/2014)

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Chinese Journal of Chemistry 2014年第1期32卷

作者： Lan Jia Lingyun Xu Zhaohui Wang Jianping Xu Jian Ji MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China

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Fullerene: A potential flame retardant for polyolefins

Fullerene: A potential flame retardant for polyolefins

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24th Annual Conference on Recent Advances in Flame Retardancy of Polymeric Materials 2013

作者： Zhao, Liping Guo, Zhenghong Fang, Zhengping Lab of Polymer Materials and Engineering Ningbo Institute of Technology Zhejiang University Ningbo 315100 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9781632663122

Fullerene (C60) behaves as an electron-deficient compound and is known as a radical sponge. Most of polymers experience a free radical chain scission process during combustion. Thus, the presence of C60 may reduce the flammability of polymers by trapping the free radicals. The flame retardancy of polypropylene/fullerene (PP/C60) nanocomposites was investigated by cone calorimetry. The results show that the presence of C60 in PP matrix not only prolonged the tign (time to ignition) but also considerably reduce the PHRR (peak heat release rate). PP/2.0 wt% C60 showed a tign of 36s, which was much longer than that of pure PP, this implied that C60 could delay the start of combustion. Furthermore, the PHRR of PP/C60 nanocomposites was around 60% (1.0 wt% of C60) and 55% (2.0 wt% of C60) of pure PP, demonstrating that the addition of C60 improved the flame retardancy of PP. C60 reduced the flammability of PP by trapping free radicals in the gas phase and in situ forming a gelled-ball crosslink network to improve the flame retardancy of PP in the condensed phase. To get more information about the flame retardant mechanism of C60, the influence of C60 on the flame retardancy of high density polyethylene (HDPE), polypropylene (PP), polymethyl methacrylate (PMMA), and bisphenol A polycarbonate (PC) have been studied by using microscale combustion calorimetry (MCC). The results showed C60 had different effects on the flammability of different polymer matrices. Compared with pure HDPE, the PHRR of HDPE/C60 nanocomposites were given a reduction 18% (1.0 wt% of C60) and 26% (2.0 wt% of C60). No obvious changes of PHRR were found with the addition of C60 in PP, PMMA and PC. Among these polymers, more side groups were found in PP and PMMA. When PP and PMMA exposed to high temperature, C60 was able to trap the alkyl radicals produced by the thermal decomposition of PP and PMMA. However, the bond dissociation energy of C-C in the side chain is smaller than that of C-C in the backbon

关键词： Polypropylenes

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New tetraphenylpyridinium-based luminogens with aggregation-induced emission characteristics

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Science China Chemistry 2013年第9期56卷 1187-1190页

作者： WANG ZongTan FANG Yuan SUN JingZhi QIN AnJun TANG Ben Zhong MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University Department of Chemistry Institute for Advanced StudyInstitute of Molecular Functional MaterialsThe Hong Kong University of Science & Technology (HKUST) Guangdong Innovative Research Team SCUT-HKUST Joint Research LaboratoryState Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology (SCUT)

The research on aggregation-induced emission (AIE) has drawn increasing interests in the past decade. With the efforts scientists paid, a variety of AIE systems have been developed, among which the tetraphenylethelene and silole derivatives are the most studied. Development of new AIE systems could further enrich the AIE molecules and promote the development of AIE area. In this communication, we prepared a new AIE system based on 1,2,4,6-tetraphenylpyridinium ions according to the restriction of intramolecular rotation mechanism. These molecules could be facilely synthesized via one-step and one-pot reaction. The ionic AIE-active molecules could find wide application in sensing and optoelectronic areas.

关键词： aggregation-induced emission cation restriction of intramolecular rotation tetraphenylpyridinium

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Heat-induced Shrinkage of Multilayer Capsules for drug loading and protection

Heat-induced Shrinkage of Multilayer Capsules for drug loadi...

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International Conference on Nanoscience & Technology,China 2013(ChinaNANO 2013)

作者： Weijun Tong Yuanyuan Han Shupeng She Lili Xie Changyou Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University

The polyelectrolyte multilayer microcapsules with precisely controlled size, shape, wall thickness, and compositions as well as their multifold possibilities of functionalization have attracted many attentions in the past decades. This kind capsules have great potential applications in the fields of drug delivery, biosensor, microreactor and so *** applications of this kind of capsules must face the challenge of efficient loading of the desired substances. In this study, the spontaneous deposition and heat induced shrinkage is combined to fabricate a drug carrier system, which is expected to show a high drug loading efficiency and more controllable release profile. The Sodium poly（styrene sulfonate）（PSS）/poly（diallyldimethylammonium chloride）（PDADMAC） capsules are assembled by using PSS-doped CaCO 3 microparticle as templates, so that the resultant capsules are simultaneously encapsulated with PSS. While shrinkage does occur upon heat-treatment, high efficient loading of doxorubicin hydrochloride （DOX） is also facilely achieved by a simple incubation. The heat-treatment does not influence obviously on the drug encapsulation, whereas the release profiles can be effectively tuned. And then water-soluble photosensitizer methylene blue （MB） molecules with low molecule weight and positive charges were deposited into capsules through the electrostatic interaction bewteen PSS, and were trapped within capsules through capsules shrinkage after 30min heat-treatment in 80 ℃ water bath. In biological systems, MB is easily reduced to the colorless methylene blue without photodynamic activity. The release profile of MB from capsules was studied in PBS （pH7.4）. The MB molecules can be well preserved inside the capsules. And capsules can protecte MB against enzyme reduction. The in vitro experiment proved that capsules loaded MB have significant phototoxicity to Hela cells under light activition, which showed great photodynamic effect.

关键词： Layer-by-layer Capsules Shrinkage Loading and release Protection

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