共查询到20条相似文献,搜索用时 15 毫秒
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Inside Cover: Broadband Visible‐Light‐Harvesting trans‐Bis(alkylphosphine) Platinum(II)‐Alkynyl Complexes with Singlet Energy Transfer between BODIPY and Naphthalene Diimide Ligands (Chem. Eur. J. 44/2014) 下载免费PDF全文
Lianlian Liu Song Guo Jie Ma Kejing Xu Prof. Jianzhang Zhao Prof. Tierui Zhang 《Chemistry (Weinheim an der Bergstrasse, Germany)》2014,20(44):14142-14142
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meso‐Nitro‐ and meso‐Aminosubporphyrinatoboron(III)s and meso‐to‐meso Azosubporphyrinatoboron(III)s 下载免费PDF全文
Daiki Shimizu Seung‐Kyu Lee Prof. Dr. Dongho Kim Prof. Dr. Atsuhiro Osuka 《化学:亚洲杂志》2016,11(20):2946-2952
meso‐Nitrosubporphyrinatoboron(III) was synthesized by nitration of meso‐free subporphyrin with AgNO2/I2. The subsequent reduction with a combination of NaBH4 and Pd/C gave meso‐aminosubporphyrinatoboron(III). meso‐Nitro‐ and meso‐amino‐groups significantly influenced the electronic properties of subporphyrin, which has been confirmed by NMR and UV/Vis spectra, electrochemical analysis, and DFT calculations. Oxidation of meso‐aminosubporphyrinatoboron(III)s with PbO2 cleanly gave meso‐to‐meso azosubporphyrinatoboron(III)s that exhibited almost coplanar conformations and large electronic interaction through the azo‐bridge. 相似文献
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Back Cover: Ultrafast Photoinduced Charge Separation in Wide‐Band‐Capturing Self‐Assembled Supramolecular Bis(donor styryl)BODIPY–Fullerene Conjugates (Chem. Eur. J. 45/2015) 下载免费PDF全文
Shuai Shao Habtom B. Gobeze Prof. Dr. Paul A. Karr Prof. Dr. Francis D'Souza 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(45):16284-16284
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Back Cover: Cofactor‐Free Light‐Driven Whole‐Cell Cytochrome P450 Catalysis (Angew. Chem. Int. Ed. 3/2015) 下载免费PDF全文
Jong Hyun Park Dr. Sahng Ha Lee Gun Su Cha Da Som Choi Dong Heon Nam Jae Hyung Lee Prof. Dr. Jung‐Kul Lee Prof. Dr. Chul‐Ho Yun Prof. Dr. Ki Jun Jeong Prof. Dr. Chan Beum Park 《Angewandte Chemie (International ed. in English)》2015,54(3):1042-1042
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Inside Back Cover: Guest‐Induced Photophysical Property Switching of Artificial Light‐Harvesting Dendrimers (Angew. Chem. Int. Ed. 27/2014) 下载免费PDF全文
Young‐Hwan Jeong Minjung Son Hongsik Yoon Pyosang Kim Do‐Hyung Lee Prof. Dongho Kim Prof. Woo‐Dong Jang 《Angewandte Chemie (International ed. in English)》2014,53(27):7089-7089
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Cover Picture: Amide‐Substituted Titanocenes in Hydrogen‐Atom Transfer Catalysis (Angew. Chem. Int. Ed. 4/2016) 下载免费PDF全文
Dr. Yong‐Qiang Zhang Dr. Verena Jakoby Katharina Stainer Alexander Schmer Sven Klare Mirko Bauer Prof. Dr. Stefan Grimme Prof. Dr. Juan Manuel Cuerva Prof. Dr. Andreas Gansäuer 《Angewandte Chemie (International ed. in English)》2016,55(4):1215-1215
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Qinqin Zheng Sixun Zheng 《Journal of polymer science. Part A, Polymer chemistry》2012,50(9):1717-1727
Poly(N‐isopropylacrylamide)‐block‐poly(ethylene oxide)‐block‐poly(N‐isopropylacrylamide) (PNIPAAm‐b‐PEO‐b‐PNIPAAm) triblock copolymer was synthesized via the reversible addition‐fragmentation chain transfer/macromolecular design via the interchange of xanthate (RAFT/MADIX) process with xanthate‐terminated poly(ethylene oxide) (PEO) as the macromolecular chain transfer agent. The successful synthesis of the ABA triblock copolymer inspired the preparation of poly(N‐isopropylacrylamide)‐block‐poly(ethylene oxide) (PNIPAAm‐b‐PEO) copolymer networks with N,N′‐methylenebisacrylamide as the crosslinking agent with the similar approach. With the RAFT/MADIX process, PEO chains were successfully blocked into poly(N‐isopropylacrylamide) (PNIPAAm) networks. The unique architecture of PNIPAAm‐b‐PEO networks allows investigating the effect of the blocked PEO chains on the deswelling and reswelling behavior of PNIPAAm hydrogels. It was found that with the inclusion of PEO chains into the PNIPAAm networks as midblocks, the swelling ratios of the hydrogels were significantly enhanced. Furthermore, the PNIPAAm‐b‐PEO hydrogels displayed faster response to the external temperature changes than the control PNIPAAm hydrogel. The accelerated deswelling and reswelling behaviors have been interpreted based on the formation of PEO microdomains in the PNIPAAm networks, which could act as the hydrophilic tunnels to facilitate the diffusion of water molecules in the PNIPAAm networks. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 相似文献
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Graft copolymers comprising poly(vinylidene fluoride‐co‐chlorotrifluoroethylene) backbone and poly(styrene sulfonic acid) side chains, i.e. P(VDF‐co‐CTFE)‐g‐PSSA were synthesized using atom transfer radical polymerization (ATRP) for composite nanofiltration (NF) membranes. Direct initiation of the secondary chlorinated site of CTFE units facilitates grafting of PSSA, as revealed by FT‐IR spectroscopy. The successful “grafting from” method and the microphase‐separated structure of the graft copolymer were confirmed by transmission electron microscopy (TEM). Wide angle X‐ray scattering (WAXS) also showed the decrease in the crystallinity of P(VDF‐co‐CTFE) upon graft copolymerization. Composite NF membranes were prepared from P(VDF‐co‐CTFE)‐g‐PSSA as a top layer coated onto P(VDF‐co‐CTFE) ultrafiltration support membrane. Both the rejections and the flux of composite membranes increased with increasing PSSA concentration due to the increase in SO3H groups and membrane hydrophilicity, as supported by contact angle measurement. The rejections of NF membranes containing 47 wt% of PSSA were 83% for Na2SO4 and 28% for NaCl, and the solution flux were 18 and 32 L/m2 hr, respectively, at 0.3 MPa pressure. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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Anna Widera Daniel Vogler Prof. Hubert Wadepohl Dr. Elisabeth Kaifer Prof. Hans‐Jörg Himmel 《Angewandte Chemie (International ed. in English)》2018,57(35):11456-11459
Boron(III) cations are widely used as highly Lewis acidic reagents in synthetic chemistry. In contrast, boron(II) cations are extremely rare and their chemistry almost completely unknown. They are both Lewis acids and electron donors, properties that are commonly associated with catalytically active late‐transition‐metal complexes. This double reactivity pattern ensures a rich and diverse chemistry. Herein we report the facile synthesis of several new boron(II) cations starting with a special diborane with two easily exchangeable triflate substituents. By increasing the π‐acceptor character of the neutral σ‐donor reaction partners, first reactions were developed in which the combined Lewis acidity and electron‐donor properties of boron(II) cations are applied for the reduction of organic molecules. The results of our study pave the way for applications of these unusual compounds in synthetic chemistry. 相似文献
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Inside Back Cover: A Heteroleptic Ferrous Complex with Mesoionic Bis(1,2,3‐triazol‐5‐ylidene) Ligands: Taming the MLCT Excited State of Iron(II) (Chem. Eur. J. 9/2015) 下载免费PDF全文
Dr. Yizhu Liu Dr. Kasper S. Kjær Dr. Lisa A. Fredin Dr. Pavel Chábera Tobias Harlang Dr. Sophie E. Canton Prof. Sven Lidin Dr. Jianxin Zhang Prof. Reiner Lomoth Dr. Karl‐Erik Bergquist Prof. Petter Persson Prof. Kenneth Wärnmark Prof. Villy Sundström 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(9):3831-3831