Comparative photophysical study reveals donor segment length influences fluorescence quantum yield and triplet state formation in thiophene-based oligomers.
Key Points
High triplet yields (up to 88%) observed in thiophene-based DAD systems with TPD acceptors, enhancing fluorescence characteristics.
Continuous measurements employed included femtosecond and nanosecond transient absorption spectroscopy to analyze various oligomers.
Findings suggest that increasing donor segment length improves fluorescence quantum yield, driven by LUMO delocalization along the backbone.
Support for using different acceptor types in π-conjugated systems highlights potential applications in optoelectronic devices.