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Inside Cover: A Dendritic Supramolecular Complex as Uniform Hybrid Micelle with Dual Structure for Bimodal In Vivo Imaging (Chem. Eur. J. 12/2017)

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Chemistry – A European Journal 2017年第12期23卷 2732-2732页

作者： Simin Zhang Yanmei Zheng Dr. Shengyan Yin Prof. Jingzhi Sun Dr. Bao Li Prof. Lixin Wu State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 P. R. China State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 P. R. China Department of Polymer Science and Engineering Key Laboratory of Macromolecular Synthesis and Functionalization of the Ministry of Education of China Zhejiang University Hangzhou 310027 P. R. China

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Photodynamic Theranostics: Glutathione Activatable Photosensitizer-Conjugated Pseudopolyrotaxane Nanocarriers for Photodynamic Theranostics (Small 45/2016)

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Small 2016年第45期12卷

作者： Hongxin Tong Yangjun Chen Zuhong Li Huan Li Tingting Chen Qiao Jin Jian Ji MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China

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Extended Ladder‐Type Benzo[k]tetraphene‐Derived Oligomers

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Angewandte Chemie 2017年第44期129卷

作者： Jongbok Lee Huanbin Li Alexander J. Kalin Tianyu Yuan Chenxu Wang Troy Olson Hanying Li Lei Fang Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77843-3255 USA MOE Key Laboratory of Macromolecular Synthesis and Functionalization State Key Laboratory of Silicon Materials Department of Polymer Science and Engineering Zhejiang University 38 Zheda Rd Hangzhou 310027 China Department of Materials Science and Engineering Texas A&M University 3003 TAMU College Station TX 77843-3003 USA

Well‐defined, fused‐ring aromatic oligomers represent promising candidates for the fundamental understanding and application of advanced carbon‐rich materials, though bottom‐up synthesis and structure–property correlation of these compounds remain challenging. In this work, an efficient synthetic route was employed to construct extended benzo[ k ]tetraphene‐derived oligomers with up to 13 fused rings. The molecular and electronic structures of these compounds were clearly elucidated. Precise correlation of molecular sizes and crystallization dynamics was established, thus demonstrating the pivotal balance between intermolecular interaction and molecular mobility for optimized processing of highly ordered solids of these extended conjugated molecules.

关键词： Halbleiter Konjugation Leiterpolymere Metathesen Polycyclen

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CuSO4/H2O2‐Induced Rapid Deposition of Polydopamine Coatings with High Uniformity and Enhanced Stability

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Angewandte Chemie 2016年第9期128卷

作者： Chao Zhang Yang Ou Wen‐Xi Lei Ling‐Shu Wan Jian Ji Zhi‐Kang Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China

Mussel‐inspired polydopamine (PDA) deposition offers a promising route to fabricate multifunctional coatings for various materials. However, PDA deposition is generally a time‐consuming process, and PDA coatings are unstable in acidic and alkaline media, as well as in polar organic solvents. We report a strategy to realize the rapid deposition of PDA by using CuSO 4 /H 2 O 2 as a trigger. Compared to the conventional processes, our strategy shows the fastest deposition rate reported to date, and the PDA coatings exhibit high uniformity and enhanced stability. Furthermore, the PDA‐coated porous membranes have excellent hydrophilicity, anti‐oxidant properties, and antibacterial performance. This work demonstrates a useful method for the environmentally friendly, cost‐effective, and time‐saving fabrication of PDA coatings.

关键词： Antibakterielle Oberflächen Dopamin Hydrophilie Muschel-inspirierte Chemie Polydopamin-Beschichtungen

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Mucin from Loach Skin Mucus and Its Interfacial Behavior on Gold Surface

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Chinese Journal of Polymer Science 2014年第10期32卷 1381-1389页

作者： Xiang Wang 杜淼宋义虎 Qiang Zheng MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University

Loach skin mucin was isolated from loach skin mucus and found to be similar to mammalian mucins in many aspects, i.e., low amino acid residue content, high molecular weight, presence of hydrophobic blocks and gel-forming characteristics in water. However, loach skin mucin can form a weak gel in water at a much lower concentration （3 mg/mL） than mammalian mucins, indicating its good hydrophilicity. Loach skin mucin can also form a stable adsorption layer on gold surface in aqueous environment, owing to the existence of hydrophobic blocks within mucin. The nature of high hydrophilicity and interfacial behavior give loach skin mucin potential as excellent material for use in solid-water interfaces for antifouling and lubrication, and should be crucial to the versatile functions of loach skin mucus.

关键词： Fish mucus Mucin Hydrophilicity Adsorption Interface.

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Influence of Different Inorganic Salts on Crystallization-driven Morphological Transformation of PCL-b-PEO Micelles in Aqueous Solutions

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Chinese Journal of Polymer Science 2014年第9期32卷 1128-1138页

作者： Jie-xin Yang Wei-na He 徐君庭 Bin-yang Du Zhi-qiang Fan MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University

Different inorganic salts, including NaSCN, NaCl, MgCl2 and Na2SO4, were added into the aqueous solution containing poly（ε-caprolactone）-b-poly（ethylene oxide）（PCL-b-PEO） semicrystalline mieelles. The effects of inorganic salt on the micellar size and morphology were investigated with TEM and DLS. It is found that addition of NaSCN leads to increase of the micellar size, but the micelles remain to be spherical. By contrast, the other three inorganic salts can induce sphere-to-cylinder or sphere-to-lamella transformations of the PCL-b-PEO semicrystalline mieelles. The alteration rate of the micellar size with the time after addition of the inorganic salts decreases in the following order： NazSO4 〉 NaCl ≈ MgCl2〉 NaSCN. These results were interpreted in terms of the ＂salting-out＂ ability of the cations and anions. The anions SO42- and Cl- have a stronger ＂salting-out＂ ability, driving the morphological transformations of the micelles and leading to a rapid change in micellar size. By contrast, SCN- has a weaker salting-out＂ ability. The cations Na＋ and Mg2＋ may associate with the PEO blocks, leading to a ＂salting-out＂ effect as well. However, the ＂salting-out＂ ability of cations is weaker than that of SO42- and Cl- anions, and the ＂salting-out＂ abilities ofNa＋ and Mg2＋ are similar.

关键词： Block copolymer Crystallization Inorganic salt Micelle.

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Resorcinarene-centered Amphiphilic Star-block Copolymers: synthesis, Micellization and Controlled Drug Release

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Chinese Journal of Polymer Science 2014年第11期32卷 1431-1441页

作者： Chen Gao Ying Wang Wei-pu Zhu 沈之荃 MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University

Eight-arm star-shaped poly（■-caprolactone）-block-poly（ethylene glycol）s（SPCL-b-PEG） have been prepared by a combination of controlled ring-opening polymerization（CROP） and coupling reaction. First, eight-arm star-shaped poly（■-caprolactone）s（SPCL） with a resorcinarene core were synthesized using octamethyl tetraundecylresorcinarene octaacetate as octa-initiator and yttrium tris（2,6-di-tert-butyl-4-methylphenolate） [Y（DBMP）3] as catalyst. Then the coupling reaction was carried out between SPCLs and carboxyl-terminated methoxy poly（ethylene glycol）s（mP EG-COOH） in the presence of N,N′-dicyclohexylcarbodiimide（DCC） and 4-dimethylaminopyridine（DMAP）, resulting in eight-arm star-shaped SPCL-b-PEGs with controlled molecular weight and well-defined architecture. Furthermore, these amphiphilic eight-arm SPCL-b-PEGs could self-assemble into micelles with low critical micellar concentrations（CMC）, which was characterized by fluorescent spectroscopy. Moreover, indomethacin loaded micelles with high drug loading content and high encapsulation efficiency can be prepared, which is probably due to the highly branched architecture. The morphologies of micelles were characterized by transmission electron microscopy（TEM）, which exhibited diverse nanostructures as the drug loading contents varied. In vitro drug release of indomethacin from SPCL-b-PEG micelles was carried out in PBS, from which a sustained release behavior was observed. SPCL-b-PEG micelles did not show significant cytotoxicity at copolymer concentrations up to 1000 mg/L, making them very promising for drug delivery.

关键词： Star block copolymer Resorcinarene Micelles Drug delivery.

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Site‐Specific Pre‐Swelling‐Directed Morphing Structures of Patterned Hydrogels

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Angewandte Chemie 2017年第50期129卷

作者： Zhi Jian Wang Wei Hong Zi Liang Wu Qiang Zheng Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Department of Aerospace Engineering Iowa State University Ames IA 50010 USA Department of Engineering Mechanics Zhejiang University Hangzhou 310027 China Global Station for Soft Matter Global Institution for Collaborative Research and Education Hokkaido University Sapporo 060-0810 Japan

Morphing materials have promising applications in various fields, yet how to program the self‐shaping process for specific configurations remains a challenge. Herein we show a versatile approach to control the buckling of individual domains and thus the outcome configurations of planar‐patterned hydrogels. By photolithography, high‐swelling disc gels were positioned in a non‐swelling gel sheet; the swelling mismatch resulted in out‐of‐plain buckling of the disc gels. To locally control the buckling direction, masks with holes were used to guide site‐specific swelling of the high‐swelling gel under the holes, which built a transient through‐thickness gradient and thus directed the buckling during the subsequent unmasked swelling process. Therefore, various configurations of an identical patterned hydrogel can be programmed by the pre‐swelling step with different masks to encode the buckling directions of separate domains.

关键词： Formänderungen Hydrogele Ortsspezifisches Aufquellen Photolithographie Veränderliche Strukturen

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Large-scale fabrication of field-effect transistors based on solution-grown organic single crystals

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Science Bulletin 2015年第12期60卷 1122-1127,I0003页

作者： Shuang Liu Jia-Ke Wu Cong-Cheng Fan Guo-Biao Xue Hong-Zheng Chen Huolin L. Xin Han-Ying Li Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization State Key Laboratory of Silicon Materials Department of Polymer Science and EngineeringZhejiang University Hangzhou 310027 China Center for Functional Nanomaterials Brookhaven National Laboratory New York NY 11973 USA

A simple solution processing method was de- veloped to grow large-scale well-aligned single crystals in- cluding 6,13-bis（triisopropylsilylethynyl）pentacene （TIPS- pentacene）, anthracene, tetracene, perylene, C6o and tetra- cyanoquinodimethane. As pinned by a solid needle, a droplet of semiconductor solution dried into single-crystal arrays on a 1 cm×2 cm substrate. TIPS-pentacene was used to demonstrate the fabrication of hundreds of field- effect transistors （FETs） with the hole mobility as high as 6.46 cm^2 V^-1.s^-1. As such, this work provides a high- throughput, yet efficient approach for statistical examination on the FET performance of organic single crystals.

关键词： Organic single-crystal transistors Large scale High mobility Solution process

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Frontispiece: Phenol‐yne Click Polymerization: An Efficient Technique to Facilely Access Regio‐ and Stereoregular Poly(vinylene ether ketone)s

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Chemistry – A European Journal 2017年第45期23卷

作者： Yang Shi Tianwen Bai Wei Bai Zhe Wang Dr. Ming Chen Dr. Bicheng Yao Prof. Jing Zhi Sun Prof. Anjun Qin Prof. Jun Ling Prof. Ben Zhong Tang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 P.R. China Guangdong Innovative Research Team State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P.R. China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong P.R. China

Chiral molecules display a unique interaction with light. Here, the synthesis of two types of chiral structures based on spiro compounds is presented, each of which show remarkable chiroptical activity. The structure of the (P2)‐1 molecule shows a double helix formed by all‐carbon atoms, whereas the (P4)‐2 molecule revealed a flexible configuration that modifies its chiroptical activity, but keeps its overall peculiar structure. More information can be found in the Communication by A. Qin, J. Ling and B. Z. Tang et al. on page 10725 ff.

关键词： organocatalysts polymers polymerization poly(vinylene ether ketone)s regio- and stereoselectivity

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