Study of excited-state dynamics of D-π-A thiophene derivatives: Enhanced excited-state absorption and refraction

Journal of Photochemistry and Photobiology A: Chemistry(2024)

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摘要
•Study of the optical nonlinearity of two thiophene derivatives with different donors.•Discussion of photodynamic evolution in different solvents by transient absorption.•Z-scan experiment shows that 3-TH have strong excited state absorption.•The nonlinear absorption coefficients are about 10-9m/W (4 ns) and 10-11m/W (21 ps).
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关键词
Nonlinear optics,Transient absorption and refraction,Thiophene derivatives,Charge transfer
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