Solvent dependent photophysics of fac-[Re(CO)3(11,12-X2dppz)(py)]+ (X = H, F or Me)
Solvent dependent photophysics of fac-[Re(CO)3(11,12-X2dppz)(py)]+ (X = H, F or Me)
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DOI:
10.1039/b618651c
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发表时间:
2007-01-01
影响因子:
3.1
通讯作者:
George, Michael W.
中科院分区:
文献类型:
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作者:
Dyer, Joanne;Creely, Caitriona M.;George, Michael W.
The photophysical properties of [Re(CO)(3)(dppz)(py)](+) (dppz = dipyrido-[3,2- a: 2', 3'-c] phenazine) ( 1) and its 11,12 substituted derivatives [Re(CO)(3)(dppzMe(2))(py)](+) (2) and [Re(CO)(3)(dppzF(2))(py)](+) ( 3) have been examined in organic and aqueous environments using phosphorescence and picosecond transient visible and infrared absorption spectroscopic methods. The roles of the intraligand IL(pi-pi*) and metal-to-ligand charge transfer MLCT(phz) excited states are evaluated and used to explain the major effect of difluoro-substitution, which is particularly remarkable in water, where the excited state of [Re(CO)(3)(dppzF(2))(py)](+) (3) is strongly quenched.