Electrochemical and optical properties of solution processable benzotriazole and benzothiadiazole containing copolymers

KARAKUS M., BALAN A., BARAN D., TOPPARE L., ÇIRPAN A.

SYNTHETIC METALS, cilt.162, ss.79-84, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 162
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.synthmet.2011.11.014
  • Dergi Adı: SYNTHETIC METALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.79-84
  • Anahtar Kelimeler: Benzotriazole, Benzothiadiazole, Donor acceptor copolymers, Electrochromism, Organic electronics, HETEROJUNCTION SOLAR-CELLS, CONJUGATED POLYMERS, OPTOELECTRONIC PROPERTIES, ELECTRON, FLUORENE, SERIES, WORK
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

2-Dodecyl benzotriazole (BTz) and benzothiadiazole (BTd) containing alternating copolymers poly(4-(2-dodecyl-2H-benzo[d][1,2,3]triazol-4-yl)benzo[c][1,2,5]thiadiazole (P1), poly(4-(5-(2-dodecyl-7-(thiophen-2yl)-2H-benzo[d][1,2,3]triazol-4-yl)thiophen-2-yl)benzo[c] [1,2,5] thiadiazole (P2) and poly(4-(5-(2-dodecyl-7-(4-hexylthiophen-2-yl)-2H-benzo[d] [1,2,3]triazol-4-yl) -3-hexylthiophen-2-yl) benzo[c][1,2,5] thiadiazole (P3) were synthesized via Suzuki polycondensation reactions. The solubility of the polymers enabled spray coating to carry out the electrochemical and optical studies. Electronic and optical properties of resulting polymers showed that P2 is a great candidate to be used as processable blue electrochromic polymer which can switch to transparent upon oxidation. P3 was also investigated in terms of its electrochromic performance which has two different colored and a transparent states, whereas P1 does not exhibit any spectral change upon applied potentials. HOMO and LUMO values, band gaps and kinetic behavior of polymers upon externally applied potential are reported in detail. (C) 2011 Elsevier B.V. All rights reserved.