Singlet-singlet excited-state absorption and triplet-triplet absorption of meso-tetraphenylporphine

被引：28

作者：

Gratz, H ^{[1
]}

Penzkofer, A ^{[1
]}

机构：

[1] Univ Regensburg, Inst Expt & Angew Phys 2, D-93040 Regensburg, Germany

来源：

CHEMICAL PHYSICS | 2000年 / 254卷 / 2-3期

关键词：

meso-tetraphenylporphine; triplet-triplet absorption; excited-state singlet-singlet absorption;

D O I：

10.1016/S0301-0104(00)00049-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The singlet-singlet excited-state absorption cross-section spectrum and the triplet-triplet absorption cross-section spectrum of meso-tetraphenylporphine (H2TPP) are determined in the wavelength range from 390 to 1450 nm. The S-1-singlet state is populated by intense picosecond pump pulse absorption (wavelength 527 nm, duration 6 ps). The T-1-triplet state is populated by S-1-T-1 intersystem crossing. The singlet-singlet absorption and the triplet-triplet absorption are probed with picosecond spectral light continua passing the sample after appropriate time delays. Absolute singlet-singlet and triplet-triplet absorption cross-sections are obtained by numerical simulation of the absorption dynamics. The similarity of the S-1-band-and T-1-band-based excited-state absorption cross-section spectra indicate a strong higher excited-state spin-orbit coupling. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：363 / 374

页数：12