Panchromatic Fluorescence Emission from Thienosquaraines Dyes: White Light Electrofluorochromic Devices.

ABSTRACT: Electrofluorochromic devices (EFCDs) that allow the modulation of the light emitted by electroactive fluorophores are very attractive in the research field of optoelectronics. Here, the electrofluorochromic behaviour of a series of squaraine dyes was studied for the first time. In solutions, all compounds are photoluminescent with maxima located in the range 665-690 nm, characterized by quantum yields ranging from 30% to 4.1%. Squaraines were incorporated in a polymer gel used as an active layer in all-in-one gel switchable EFCDs. An aggregation induced quenching occurs in the gel phase, causing a significant decrease in the emission quantum yield in the device. However, the squaraines containing the thieno groups (thienosquaraines, TSQs) show a panchromatic emission and their electrofluor

SUBMITTER: Corrente GA 

PROVIDER: S-EPMC8621610 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature