VIBRATIONAL-RELAXATION OF THE CO STRETCH VIBRATION IN HEMOGLOBIN-CO, MYOGLOBIN-CO, AND PROTOHEME-CO

被引：76

作者：

OWRUTSKY, JC ^{[1
]}

LI, M ^{[1
]}

LOCKE, B ^{[1
]}

HOCHSTRASSER, RM ^{[1
]}

机构：

[1] UNIV PENN,DEPT CHEM,PHILADELPHIA,PA 19104

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 13期

关键词：

D O I：

10.1021/j100013a064

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：

Two-color infrared pump-infrared probe spectroscopy has been used to measure vibrational relaxation times (T-1) for the CO stretching vibrations of carboxyhemoglobin (HbCO), carboxymyoglobin (MbCO), and carboxyprotoheme, all in D2O at 300 K. The times are fast (17-31 ps) compared to most previously measured metal carbonyl T-1 times. The CO relaxation is found to be somewhat faster in HbCO and MbCO than in PCO. The transient infrared spectra and anisotropy were also measured.

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页码：4842 / 4846

页数：5

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