caa a22 4500 463224442 CHVBK 20180405153222.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-0375-2 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0375-2 Electrical conductivity of homopolymer and copolymers of N -vinylcarbazole [Elektronische Daten] [Shirley Possidonio, Roberto Onmori, Laura Peres, Shu Wang] Poly(N-vinylcarbazole) (PVCz) is well known as an electroactive material due to its good photoconductivity, charge-transfer complexes, photoluminescence and electroluminescence properties. The block copolymers of N-vinylcarbazole were prepared and the effects of the relative composition, molar masses, architecture and doping on its electrical behavior were investigated. Controlled free radical polymerization has been carried out using nitroxide-mediated process in order to prepare a series of block copolymers of N-vinylcarbazole. 2,2,6,6-Tetramethyl-1-piperidinyloxy radical (TEMPO) was used to end-cap "living” homopolymer of p-bromostyrene, which was further used as a macroinitiator to polymerize N-vinylcarbazole and styrene. The copolymers have been doped at room temperature with LiClO4 and the electrical conductivities were measured by two-probe method, which have shown to depend on copolymer's relative composition and molar masses. Springer Science+Business Media, LLC, 2007 Possidonio Shirley Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2463, 05508-900, São Paulo, SP, Brazil aut Onmori Roberto Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica, Universidade de São Paulo, São Paulo, SP, Brazil aut Peres Laura Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2463, 05508-900, São Paulo, SP, Brazil aut Wang Shu Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2463, 05508-900, São Paulo, SP, Brazil aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2329-2333 0022-2461 42:7<2329 2007 42 10853 https://doi.org/10.1007/s10853-006-0375-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0375-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Possidonio Shirley Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2463, 05508-900, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Onmori Roberto Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica, Universidade de São Paulo, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Peres Laura Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2463, 05508-900, São Paulo, SP, Brazil aut NATIONALLICENCE 700 1- Wang Shu Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2463, 05508-900, São Paulo, SP, Brazil aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2329-2333 0022-2461 42:7<2329 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer