Unravelling the Competition between Internal Conversion and Intersystem Crossing in Twisted molecule 9-Phenylacridine by Femtosecond Time-resolved Spectroscopy,ChemPhotoChem

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Unravelling the Competition between Internal Conversion and Intersystem Crossing in Twisted molecule 9-Phenylacridine by Femtosecond Time-resolved Spectroscopy
ChemPhotoChem ( IF 3.0 ) Pub Date : 2024-04-26 , DOI: 10.1002/cptc.202400108
Ke Hu ₁ , Xiaoxiao He ₁ , PeiPei Jin ₁ , Xueli Wang ₁ , Haifeng Pan ₁ , Jinquan Chen ₂

Affiliation

The single bond at the C9 position in 9-phenylacridine (9-PA) could twist after photo-excitation in low-viscosity solutions, leading to a conformation that shows efficient intersystem crossing. However, such process is suppressed in high-viscosity solutions, resulting a ~2.5 times higher internal conversion (IC) yield.

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