Protecting the triplet excited state in sterically congested platinum porphyrin

被引：17
|
作者：
Moiseev, A. G. [1 ]
Margulies, E. A. [1 ]
Schneider, J. A. [1 ]
Belanger-Gariepy, F. [2 ]
Perepichka, D. F. [1 ]
机构：
[1] McGill Univ, Dept Chem, Montreal, PQ H3A 0B8, Canada
[2] Univ Montreal, Dept Chim, Montreal, PQ H3T 1J4, Canada
来源：
DALTON TRANSACTIONS | 2014年 / 43卷 / 06期
基金：
加拿大自然科学与工程研究理事会;
关键词：
PERYLENE EXCIMER; FREE-BASE; LOW-SPIN; FLUORESCENCE; COMPLEXES; LUMINESCENCE; PHOTOPHYSICS; POTENTIALS; ABSORPTION; PALLADIUM;
D O I：
10.1039/c3dt52926f
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Platinum tetrakis(2,4,6-triethylphenyl) porphyrin (Pt-1) was synthesized and its structural (X-ray), electrochemical and photophysical properties were fully characterized. Comparative studies of Pt-1 and its unsubstituted analog PtTPP show the effect of sterically congesting ortho-substituents on the dynamics of the triplet excited states. Lowered quenching rates by 3-4 times were observed for Pt-1 vs. PtTPP in the presence of oxygen and perylene, and in concentration (self)-quenching experiments.
引用
收藏
页码：2676 / 2683
页数：8
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