3749-75-5Relevant academic research and scientific papers
Reactions of nitroalkenes with nitroalkanes or sulfur ylides catalyzed by amine-thiourea bifunctional polymeric organocatalysts
Lu, Jinni,Toy, Patrick H.
, p. 2985 - 2990 (2011)
Non-cross-linked and cross-linked bifunctional polystyrenes bearing both amine and thiourea groups have been synthesized and used as organocatalysts in reactions between nitroalkenes and nitroalkanes or sulfur ylides. Control experiments using monofunctional polymers with only either amine or thiourea groups attached indicated that both functional groups were essential for efficient catalysis of the reactions studied. The non-cross-linked polystyrene was soluble in typical organic solvents and was used as a homogeneous catalyst, while the cross-linked polystyrene was used as a heterogeneous catalyst. Georg Thieme Verlag Stuttgart · New York.
Structural effects on the Electrochemical Behavior of Redox Couples Incorporated in Electrode Coatings Prepared from Copolymers and Composites
Inoue, Takeshi,Anson, Fred C.
, p. 1519 - 1525 (1987)
Five new random vinyl copolymers were prepared and tested as coating materials for binding redox active ions to electrode surfaces.Three of the copolymers were polycationic because of quaternary nitrogen sites.Two uncharged copolymers were used to prepare
Electron Trasfer to Anionic Reactants Incorporated within Polycationic Coatings on Glassy Carbon Electrodes. Comparison of Random and Block Copolymers
Sumi, Katsuhiro,Anson, Fred C.
, p. 3845 - 3850 (1986)
Block and random copolymers containing varying ratios of styrene and p-(diethylaminoethyl)styrene were synthesized and used to coat glassy carbon electrodes.In acidic electrolytes the coatings become polycationic and incorporated electroactive ions such a
A new thermo-responsive block copolymer with tunable upper critical solution temperature and lower critical solution temperature in the alcohol/water mixture
Su, Yang,Dan, Meihan,Xiao, Xin,Wang, Xiaohui,Zhang, Wangqing
, p. 4399 - 4412 (2013)
The multi-thermo-responsive block copolymer of poly[2-(2-methoxyethoxy) ethyl methacrylate]-block-poly[N-(4-vinylbenzyl)-N,N-diethylamine] (PMEO 2MA-b-PVEA) displaying phase transition at both the lower critical solution temperature (LCST) and
A new family of thermo-responsive polymers based on poly[N-(4-vinylbenzyl)- N, N-dialkylamine]
Dan, Meihan,Su, Yang,Xiao, Xin,Li, Shentong,Zhang, Wangqing
, p. 3137 - 3146 (2013/06/04)
A new family of the thermo-responsive polymers based on poly[N-(4-vinylbenzyl)-N,N-dialkylamine] with the pendent amine group as well as the doubly thermo-responsive triblock copolymer were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. These polymers showed the lower critical solution temperature (LCST) and/or the upper critical solution temperature (UCST) in alcohol and in the alcohol/water mixture. The polymer molecular weight, the polymer concentration, the cosolvent/nonsolvent and the deuterated solvent affecting the LCST and/or UCST were investigated, and their great influence on the LCST/UCST was demonstrated. The origin of the phase transition of poly[N-(4-vinylbenzyl)-N,N-dialkylamine] at LCST upon heating was investigated and the possible reason was proposed. The doubly thermo-responsive triblock copolymer of PVMA53-b-PVEA 108-b-PVMA53 underwent phase transition at two LCST temperatures. The PVEA108 block underwent the initial phase transition at the first LCST of 32.5 C to form core-corona micelles, and then the subsequent phase transition of the PVMA53 block took place at the second LCST of 54.5 C to produce corona-collapsed micelles. The proposed polymers based on poly[N-(4-vinylbenzyl)-N,N-dialkylamine] are anticipated to broaden the thermo-responsive polymer range and will be useful in polymer science.
