White-light generation from all-solution-processed OLEDs using a benzothiazole-salophen derivative reactive to the ESIPT process

Author(s)

Teixeira Alves Duarte, Luis Gustavo ^{[1, 2]} ; Germino, Jose Carlos ^[1] ; Berbigier, Jonatas Faleiro ^[2] ; Barboza, Cristina Aparecida ^[3] ; Faleiros, Marcelo Meira ^[1] ; Simoni, Deborah de Alencar ^[1] ; Galante, Miguel Tayar ^[1] ; de Holanda, Matheus Serra ^[1] ; Rodembusch, Fabiano Severo ^[2] ; Zambon Atvars, Teresa Dib ^[1]

Affiliation

^[1] Univ Estadual Campinas, Inst Chem, Campinas, SP - Brazil

^[2] Univ Fed Rio Grande do Sul, Grp Pesquisa Fotoquim Organ Aplicada, Porto Alegre, RS - Brazil

^[3] Polish Acad Sci, Inst Phys, Warsaw - Poland

• Document type: Journal article
• Source: Physical Chemistry Chemical Physics; v. 21, n. 3, p. 1172-1182, JAN 21 2019.
• Web of Science Citations: 7

Abstract

A salicylidene derivative, N,N-bis(salicylidene)-(2-(3,4-diaminophenyl)benzothiazole) (BTS), reactive in the Excited State Intramolecular Proton Transfer (ESIPT) process, was synthesized and its photophysical properties were evaluated, presenting an emission covering the entire range of the visible spectrum. Due to its broad emission band, BTS was successfully tested as an active layer in solution-processed organic light-emitting diodes with white-light emission. These diodes were prepared using solution-based protocols with the dye solubilized in a poly(9-vinylcarbazole) matrix. Different guest:host (polymer:BTS) molar ratios were used to optimize the diode performance. The optimized architecture rendered the best so far all-solution-processed ESIPT OLED with a luminance of 34 cd m(-2) at 13.5 V with CIE coordinates 0.31, 0.40. (AU)

• FAPESP's process: 13/16245-2 - Photophysical properties of thin films of conjugated polymers
• Grantee: Teresa Dib Zambon Atvars
• Support Opportunities: Regular Research Grants