Electrochromic and optical studies of solution processable benzotriazole and fluorene containing copolymers

KAYA E., BALAN A., BARAN D., ÇIRPAN A., TOPPARE L.

ORGANIC ELECTRONICS, vol.12, no.1, pp.202-209, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 1
  • Publication Date: 2011
  • Doi Number: 10.1016/j.orgel.2010.11.001
  • Journal Name: ORGANIC ELECTRONICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.202-209
  • Keywords: Benzotriazole, Fluorene, Optoelectronic, Conjugated copolymers, Donor-acceptor, LIGHT-EMITTING-DIODES, DONOR-ACCEPTOR COPOLYMERS, HETEROJUNCTION SOLAR-CELLS, CONJUGATED POLYMERS, ELECTROLUMINESCENT PROPERTIES, ORGANIC SEMICONDUCTORS, DEVICES, BANDGAP, CONDUCTIVITY, ENERGY
  • Middle East Technical University Affiliated: Yes

Abstract

2-Dodecyl benzotriazole and 9,9-dioctylfluorene containing alternating copolymers poly((9,9-dioctylfluorene)-2,7-diyl-(2-dodecyl-benzo[1,2,3] triazole)) (P1), poly((9,9-dioctylfluorene)- 2,7-diyl-(4,7-bis(thien-2-yl) 2-dodecyl-benzo[1,2,3] triazole)) (P2), poly((9,9-dioctylfluorene)- 2,7-diyl-(4,7-bis(3-hexylthien-5-yl) 2-dodecyl-benzo[1,2,3] triazole)) (P3) were synthesized via Suzuki polycondensation. Electronic and optical properties of resulting polymers showed that all polymers are both p and n dopable and have multicolored electrochromic states. HOMO and LUMO values, band gaps and spectral response of polymers upon externally applied potential and trifluoro acetic acid (TFA) addition were given in detail. (C) 2010 Elsevier B.V. All rights reserved.