Regioregularity and deposition effect on the physical/chemical properties of polythiophene derivatives films

Autor(es)

Roncaselli, Lucas K. M. ^[1] ; Silva, Edilene A. ^[1] ; Braunger, Maria Luisa ^[2] ; Souza, Nara C. ^[3] ; Ferreira, Marystela ^[4] ; De Santana, Henrique ^[5] ; Olivati, Clarissa A. ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Fac Ciencias & Tecnol, Rua Roberto Simonsen 305, BR-19060900 Presidente Prudente, SP - Brazil

^[2] Univ Campinas UNICAMP, Gleb Wataghin Inst Phys, Dept Appl Phys, BR-13083859 Campinas, SP - Brazil

^[3] Univ Fed Mato Grosso, Grp Mat Nanoestruturados, Barra Do Garcas, Mato Grosso - Brazil

^[4] Univ Fed Sao Carlos, Rodovia Joao Leme dos Santos SP 264, Km 110, BR-18052780 Sorocaba, SP - Brazil

^[5] Univ Fed Londrina UEL, Rodovia Celso Garcia Cid, PR 445, Km 380, Londrina, PR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Nanotechnology; v. 30, n. 32 AUG 9 2019.
• Citações Web of Science: 0

Resumo

Polythiophene thin films are widely studied for applications in organic electronics. However, some comparisons are still missing, regarding distinct deposition techniques and regioregularity. Here regioregular and regiorandom alkyl-substituted polythiophene derivatives (P3ATs) were deposited on solid substrates using both Langmuir-Blodgett (LB) and Langmuir-Schaefer (LS) techniques. The main goal was to verify the possible influence of the regioregularity as well the deposition technique on their optical, electrical and electrochemical properties. LB and LS films of regioregular and regiorandom poly(3-butylthiophene) (P3BT) and poly(3-octylthiophene) (P3OT) were deposited onto glass/Indium-Tin-Oxide) substrates and characterized by UV-visible optical spectroscopy, atomic force microscopy, cyclic voltammetry, and conductivity measurements. The results demonstrated the influence of the deposition technique on the electrical outcome, moreover, the regioregularity affected all the performed characterizations. In addition, this paper may be useful to understand how the amphiphilic molecule addition affected the film properties of regioregular and regiorandom P3ATs, particularly the energy diagram provided by the electrochemical and absorption features. (AU)

• Processo FAPESP: 14/13739-7 - Estudo e caracterização elétrica de células fotovoltaicas a partir de filmes finos orgânicos
• Beneficiário: Clarissa de Almeida Olivati
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Regular
• Processo FAPESP: 10/20094-1 - Fabricação e caracterização elétrica de células solares a partir de filmes finos orgânicos
• Beneficiário: Maria Luisa Braunger Fier
• Modalidade de apoio: Bolsas no Brasil - Doutorado