摘要
将液芯光纤技术用于傅里叶变换拉曼光谱测量中 ,提高拉曼光谱强度 1 0 2 ~ 1 0 4倍 .应用该技术 ,在实验上研究了溶液浓度变化对 β-carotene,rhodamine在 CS2 中的 C C键 π-π*跃迁拉曼线频移和线宽的影响 .实验结果表明 ,随着浓度降低 ( 1× 1 0 - 7~ 1× 1 0 - 1 2 mol/L) ,拉曼光谱线峰值发生红移 ,线宽变窄 .
Liquid-core optical fiber technique applied in the measurement of Fourier transform Raman spectra, can enhance the Raman spectral intensity about 10 2-10 4 times. Applying this technique, we researched the effect of the variation of the concentrations on the linewidths and frequency shifts of Raman spectral line of β-carotene and rhodamine(in CS 2) in relation to the transition of π-π * of CC bond. The experiment results showed that the red shift happens to the peak value of Raman spectral line, linewidth becomes narrow with the decrease of concentration when the concentration studied is 10 -7-10 -12 mol/L.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第12期2300-2302,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金 (批准号 :199740 13)资助