摘要
本文用激光共振拉曼光谱研究了维生素Ｂ１２位于２７０～７８０ｃｍ－１的低频振动光谱。认为３４４、４７６和４８８ｃｍ－１拉曼峰分别是腺嘌呤、Ｃｏ－ＣＮ和Ｃｏ－ＣＨ３振动模。用实验证明了维生素Ｂ１２在５１４．５ｎｍ激光作用下发生部分光解，而且Ｃｏ－ＣＨ３比Ｃｏ－ＣＮ更容易断裂。
Low frequency Raman vibration modes between 270 and 780 cm-1 of vitamin B12were studied by resonance Raman spectroscopy carefully. The Raman bands at 344, 476 and 488cm-1 were assigned to the vibration of adenine, Co-CN and Co-CH3, respectively. The experimental results indicated that vitamin B12 would be photodecomposed when it was irradiated by 514. 5nm laser and the Co-CH3 bond is broken easier than Co-CN bond. The velocity of vitamin B12 photodecomposition was measured.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1994年第1期29-32,共4页
Spectroscopy and Spectral Analysis
基金
国家教委重点基金
关键词
维生素B12
光解
激光共振
喇曼光谱
Vitamin B12, Resonance Raman spectroscopy, Photodecomposition
