FREQUENCY-DEPENDENCE OF QUANTUM EFFICIENCY FOR HOLE FORMATION IN PHOTOCHEMICAL HOLE-BURNING FOR DYE-DOPED POLYMER SYSTEMS

被引：25
|
作者：
HORIE, K
IKEMOTO, M
SUZUKI, T
MACHIDA, S
YAMASHITA, T
MURASE, N
机构：
[1] UNIV TOKYO,ADV SCI & TECHNOL RES CTR,MEGURO KU,TOKYO 153,JAPAN
[2] HITACHI LTD,CENT RES LAB,KOKUBUNJI,TOKYO 185,JAPAN
来源：
CHEMICAL PHYSICS LETTERS | 1992年 / 195卷 / 5-6期
关键词：
D O I：
10.1016/0009-2614(92)85563-P
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：
Marked frequency dependence of the quantum efficiency for hole formation was observed at 4 and 20 K for photochemical hole-burning of free-base tetraphenylporphin (TPP) and sulfonated TPP in poly(vinyl alcohol) (PVA) and other polymers as well as non-photochemical hole-burning of methylene blue in PVA. The quantum efficiency of hole formation at the lower-frequency foot of the lowest-energy absorption band is about 10 times larger than that at the higher-frequency foot, which could be due to the existence of several vibronic states in the lowest-energy absorption band with different molar extinction coefficients, hole formation efficiencies, and/or Debye-Waller factors.
引用
收藏
页码：563 / 567
页数：5
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