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Synthesis and Properties of Fluorenyl‐Pyridinyl Alternating Copolymers for Light‐Emitting Diodes

12-09-2013 | Xiaoyong Pan, Shouping Liu, Hong Yan, Polymer International, 2013

Abstract A novel series of well‐defined alternating poly[2,7‐(9,9‐di(2‐ethylhexyl)fluorenyl)‐alt‐pyridinyl] (PDEHFP) were synthesized using palladium (0) catalyzed Suzuki coupling reaction in high yields. These polymers were characterized by 1H‐NMR, gel permeation chromatography, thermal ...

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Accessibility of Responsive End-Caps in Films Composed of Stimuli-Responsive, Depolymerizable Poly(phthalaldehydes)

12-09-2013 | Anthony M. DiLauro; Hua Zhang; Matthew S. Baker; Flory Wong; Ayusman Sen; Scott T. Phillips, Macromolecules, 2013

Polymers that are capable of depolymerizing completely from head-to-tail upon cleavage of an end-cap from the terminus of the polymer have emerged recently as a new strategy for creating stimuli-responsive solid-state materials with amplified responses. In theory, solid-state materials made from ...

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“Higher Energy Gap” Control in Fluorescent Conjugated Polymers: Turn-On Amplified Detection of Organophosphorous Agents

12-09-2013 | Deepa Pangeni; Evgueni E. Nesterov, Macromolecules, 2013

Chemo- and biosensors based on fluorescent conjugated polymers benefit from greater detection sensitivity due to amplification of the electronic perturbations produced by analyte binding. This amplification stems from the exciton-transporting properties of conjugated polymers. In a conventional ...

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RAFT Synthesis and Aqueous Solution Behavior of Novel pH- and Thermo-Responsive (Co)Polymers Derived from Reactive Poly(2-vinyl-4,4-dimethylazlactone) Scaffolds

12-09-2013 | Jing Yang Quek; Yicheng Zhu; Peter J. Roth; Thomas P. Davis; Andrew B. Lowe, Macromolecules, 2013

Well-defined homopolymers of 2-vinyl-4,4-dimethylazlactone (VDA) and AB diblock copolymers of VDA with N,N-dimethylacrylamide (DMA) and N-isopropylacrylamide (NIPAM) prepared by reversible addition–fragmentation chain transfer (RAFT) radical polymerization are reported. VDA homopolymers reacted ...

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Remarkably stable amphiphilic random copolymer assemblies: A structure‐property relationship study

11-09-2013 | Krishna Dan, Priya Rajdev, Jolly Deb, Siddhartha S. Jana, Suhrit Ghosh, Journal of Polymer Science Part A: Polymer Chemistry, 2013

ABSTRACT Synthesis of a library of amphiphilic random copolymers from a single reactive pre‐polymer and their self‐assembly is reported. Post‐polymerization modifications of the parent polymer containing pendant N‐hydroxy succinimide (NHS) ester groups with various oligooxyethylene (OE) amines ...

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Nine Cyanide-Bridged Bimetallic Magnetic Chains Derived from Octacyanomolybdate(V) and Lanthanide(III) Building Blocks

11-09-2013 | Qing Lun Wang; Yu-Zhang Tong; Cheng-Yun Su; Yue Ma; Shi Ren; Gong-Feng Xu; Guang-Ming Yang; Peng Cheng; Dai-Zheng Liao, CrystEngComm, 2013

The reactions of octacyanometallates [MoV(CN)8]3‑ and lanthanide ions in the solution of DMF (DMF = N, N-dimethylformamide) have yielded nine bimetallic coordination polymers: [LnIII(DMF)6MoV(CN)8]∞ [Ln = Pr(1), Nd(2), Sm(3), Eu(4), Gd(5), Ho(6), Er(7), Tm(8), Yb(9)]. All the coordination ...

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Solvent Response and Protonation Effects of Novel Aramides Containing Pyridine and Unsymmetrical Carbazole Moieties

06-09-2013 | Ying-Chi Huang; Kun-Li Wang; Cheng-Hung Chang; Yi-An Liao; Der-Jang Liaw; Kueir-Rarn Lee; Juin-Yih Lai, Macromolecules, 2013

A new diamine containing pyridine and carbazole groups was synthesized via a Chichibabin reaction and subsequent reduction; this compound was then used in the preparation of organo-soluble aramides (PA-a–i). The resultant polymers had high glass transition temperatures, which fell within the ...

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Controlled Synthesis of Anisotropic Polymer Particles Templated by Porous Coordination Polymers

05-09-2013 | Takashi Uemura; Tetsuya Kaseda; Susumu Kitagawa, Chemistry of Materials, 2013

Nonspherical polymer particles have been efficiently prepared in different morphological crystals of porous coordination polymers (PCPs) by in situ radical polymerization of styrene and methylmethacrylate, followed by removal of the host PCP frameworks in aqueous tetrasodium ...

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Inorganic anion-aided coordination of lanthanide metal ions to cucurbituril and supramolecular self-assembly: potential applications in the separation of light lanthanides

04-09-2013 | Yi Zhao; Li-Li Liang; Kai Chen; Ting Zhang; Xin Xiao; Yun-Qian Zhang; Zhu Tao; Sai-Feng Xue; Qian-Jiang Zhu, CrystEngComm, 2013

Linear coordination polymers have been assembled from lanthanide cations (Ln3+) and cucurbituril (Q[6]) in the presence of [CdCl4]2− or [ZnCl4]2− anions as inorganic structure inducers in HCl solution. X-ray diffraction analysis has revealed honeycomb-patterned supramolecular assemblies, in which ...

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Assembly of foam and honeycomb films of a diblock copolymer doped with Au or Ag nanoparticles at the liquid/liquid interface and their catalytic properties

02-09-2013 | Author(s): Chunxiao Chu , Di Wang , Huihui Ma , Meixiang Yu , Jingcheng Hao , Hong-Guo Liu, Materials Chemistry and Physics, 2013

Publication date: 15 October 2013 Source:Materials Chemistry and Physics, Volume 142, Issue 1 Author(s): Chunxiao Chu , Di Wang , Huihui Ma , Meixiang Yu , Jingcheng Hao , Hong-Guo Liu Composite thin films of poly(t-butyl methacrylate)-block-poly(2-vinyl pyridine) (PtBMA-b-P2VP) doped ...

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