一种高透过率,深截止的UVc波段(200～280nm)有机材料的研究(Ⅰ)  

A High Transmittance Material in UVc Band

作　　者：吕文波[1] 许强[2] 杜为民[1] 吴思诚[1] 叶学敏[1] 赵太平[1] 孟广政[3] 宋增福[1] 

机构地区：[1]北京大学物理学院,北京100871 [2]东北电子技术研究所,辽宁锦州121000 [3]钢铁研究总院,北京100081

出　　处：《光谱学与光谱分析》2003年第2期209-212,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(专项基金:No.10244001)

摘　　要：本文阐述了一种专用有机材料(粉末)在不同酸性溶液中的光谱特征,研究表明,这种材料在λ=252 nm处,透过率T=56.5％,带宽约为16nm,而在λ=290nm处有一个很强的吸收峰(ε>10L·(mol·cm)^(-1)),吸光度A_(280～298nm)>8,即透过率T_(280～298nm)<10^(-8)。这种有机材料在UVc波段(200～280nm)具有高透过率,深截止的明显特点。实验中还发现,通过调节溶剂的pH值和选取不同极性的溶剂,原来的两个吸收峰消失,而在λ=290nm处出现一个新的强吸收峰,并且透过峰可以在251～260nm范围内移位。利用材料的这种特征,再配合传统的镀膜和色玻璃技术,有可能制备出性能优良的紫外滤光片。Spectral characteristics of an organic material in acid with different concentrations were investigated in the solution of a proper acid concentration. The results showed that at 252 nm the transmittance T = 56.5 % , but at 290 run the material had a strong absorption peak (e>104L. (mol.cm)-1). The absorbance A280-298nm >8, i.e. T280-298m< 10-8. The band width was about 16 nm. Therefore, this material has conspicuous characteristics such as high transmittance and deep cutoff in the background in ultravio-let-c band. The transmission peak can be shifted in the range of 251-260 nm by changing the pH value of the solution and selecting solution with a different polarity. By analyzing the spectra of the material in acid we found that the two original absorption peaks disappeared, and a new strong absorption peak appeared at 290 nm. Moreover, it seems to be some relation between the two absorption peak intensity and the new peak, which needs to be further studied. Using this result, we can produce high quality UV-filters of this material with traditional coating and colour glass technology.

关 键 词：有机材料 质子化 光谱特征 酸性溶液 紫外滤光片 紫外材料 

分 类 号：O621.22[理学—有机化学]