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Optically Controlled Electron Transfer in a ReI Complex
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DOI：10.1002/chem.202005125.png)
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Ultrafast optical control of intramolecular charge flow was demonstrated, which paves the way for photocurrent modulation and switching with a highly wavelength-selective ON/OFF ratio. The system that was explored is a fac-[Re(CO)(3)(TTF-DPPZ)Cl] complex, where TTF-DPPZ=4',5'-bis(propylthio)tetrathiafulvenyl[i]dipyrido[3,2-a:2',3'-c]phenazine. DFT calculations and AC-Stark spectroscopy confirmed the presence of two distinct optically active charge-transfer processes, namely a metal-to-ligand charge transfer (MLCT) and an intra-ligand charge transfer (ILCT). Ultrafast transient absorption measurements showed that the ILCT state decays in the ps regime. Upon excitation to the MLCT state, only a long-lived (MLCT)-M-3 state was observed after 80 ps. Remarkably, however, the bleaching of the ILCT absorption band remained as a result of the effective inhibition of the HOMO-LUMO transition.
Keyword:
AC-Stark spectroscopy
charge-transfer transitions
ligands
Re-I complexes
time-resolved spectroscopy
期刊
C
IF:
3.7
论文数:
3.9W
被引数:
9.6W
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引用论文
Re(I) Complexes of Substituted dppz: A Computational and Spectroscopic Study.png)
INORGANIC CHEMISTRY
INORGANIC CHEMISTRYIF4.7
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INORGANIC CHEMISTRYIF4.7
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