Probing the electronic structure and photophysics of thiophene-diketopyrrolopyrrole derivatives in solution.

ABSTRACT: Diketopyrrolopyrroles are a popular class of electron-withdrawing unit in optoelectronic materials. When combined with electron donating side-chain functional groups such as thiophenes, they form a very broad class of donor-acceptor molecules: thiophene-diketopyrrolopyrroles (TDPPs). Despite their widescale use in biosensors and photovoltaic materials, studies have yet to establish the important link between the electronic structure of the specific TDPP and the critical optical properties. To bridge this gap, ultrafast transient absorption with 22 fs time resolution has been used to explore the photophysics of three prototypical TDPP molecules: a monomer, dimer and polymer in solution. Interpretation of experimental data was assisted by a recent high-level theoretical study, and additional

SUBMITTER: Polak DW 

PROVIDER: S-EPMC9429679 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature