基于光谱分析方法的光引发剂量子效率评估  

Quantum Efficiency Evaluation for Photoinitiators Based on Spectral Analysis

作　　者：李鹏[1] 赵志敏[1] 洪小芹[1] 

机构地区：[1]南京航空航天大学理学院,南京210016

出　　处：《光子学报》2009年第11期2816-2819,共4页Acta Photonica Sinica

基　　金：国家自然科学基金(10172043);航空科学基金(05G52047);教育部博士点专项基金(20040287012);国际科技合作计划(BZ2008060)资助

摘　　要：基于光谱学和Beer-Lambert定律,提出了一种评估光引发剂量子效率的新模型和方法,并给出了有关的理论分析.研究通过增加曝光厚度的方法,测定了光引发剂1173(HMPP)曝光过程中的吸收光谱,根据吸收光谱的特征峰值随曝光时间的变化速率与评估模型,获得相应的量子效率.研究结果表明:光引发剂1173在247nm和285nm处存在两个吸收峰;主吸收峰(247nm)的量子效率为0.278%;实验结果与理论分析一致.Based on the spectroscopic analysis and the Beer-Lambert law,a novel evaluation model for quantum efficiency of photoinitiators is set up,and relevant theoretic analysis is provided.The absorption spectrum of photoinitiator 1 173 （HMPP） is mensurated during the exposure process by increasing the exposure thickness.By measuring the change rate of characteristic peak height against the exposure times,the quantum efficiency is calculated according to the evaluation model.The results show that the photoinitiator 1 173 has two absorption peaks at 247 nm and 285 nm,and the quantum efficiency is about 0.278% at the main absorption peak （247 nm）.The experimental data can meet preferably to the theoretical analysis.

关 键 词：光谱学 量子效率 吸收光谱 光引发剂 光化学 

分 类 号：O433.4[机械工程—光学工程]