Addressing Charge-Transfer and Locally-Excited States in aTwisted Biphenyl Push-Pull Chromophore
| Main Authors: | Terenziani, Francesca, Painelli, Anna, Mongin, Olivier, Blanchard-Desce, Mireille, Di Donato, Mariangela, Marcelli, Agnese, Sanyal, Somananda, Campioli, Elisa |
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| Format: | Article |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4117652 |
Daftar Isi:
- We present the synthesis and spectroscopic characterization of twisted push–pull biphenyl molecule undergoing photo- induced electron transfer. Steady-state and transient absorption spectra suggest, in this rigid molecular structure, a subtle interplay between locally-excited and charge-transfer states, whose equilibrium and dynamics is only driven by solvation. A theoretical model is presented for the solvation dynamics and, with the support of quantum chemical calculations, we demonstrate the existence of two sets of states, having either local or charge-transfer character, that only “communicate” thanks to solvation, which is the sole driving force for the charge-separation process.