Core-Twist Modulated Intersystem Crossing in a π-Fused Single-Molecule DOI
Aniruddha Mazumder, Pallavi Panthakkal Das, Kavya Vinod

и другие.

The Journal of Physical Chemistry Letters, Год журнала: 2025, Номер unknown, С. 4643 - 4651

Опубликована: Май 2, 2025

Herein, we present direct evidence of intersystem crossing (ISC) in a core-twisted naphthalenemonoimide-fused perylenediimide (NP) at the single-molecule level. The ISC process was characterized by frequent quantum jumps (short off states) fluorescence measurements. singlet to triplet NP corroborated ultrafast transient absorption exhibits with rate constant kISC = 6.5 × 107 s-1 and yield ϕT 25.8 ± 2.4%. Our theoretical investigations unveil potential state mixing between first excited S1 third T3, thus providing insight into mechanism during relaxation from Franck-Condon region its optimal geometry state. current investigation provides critical insights twist-induced polyaromatic hydrocarbon both ensemble levels.

Язык: Английский

Core-Twist Modulated Intersystem Crossing in a π-Fused Single-Molecule DOI
Aniruddha Mazumder, Pallavi Panthakkal Das, Kavya Vinod

и другие.

The Journal of Physical Chemistry Letters, Год журнала: 2025, Номер unknown, С. 4643 - 4651

Опубликована: Май 2, 2025

Herein, we present direct evidence of intersystem crossing (ISC) in a core-twisted naphthalenemonoimide-fused perylenediimide (NP) at the single-molecule level. The ISC process was characterized by frequent quantum jumps (short off states) fluorescence measurements. singlet to triplet NP corroborated ultrafast transient absorption exhibits with rate constant kISC = 6.5 × 107 s-1 and yield ϕT 25.8 ± 2.4%. Our theoretical investigations unveil potential state mixing between first excited S1 third T3, thus providing insight into mechanism during relaxation from Franck-Condon region its optimal geometry state. current investigation provides critical insights twist-induced polyaromatic hydrocarbon both ensemble levels.

Язык: Английский

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