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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。
In this paper, we describe the spectral characteristics of a special organic material (powder) in different acidic solutions. The results show that this material has a transmittance of T = 56.5% at λ = 252 nm and a bandwidth of about 16 nm, (280 ~ 298nm)> 10 ~ (280 ~ 298nm), the absorbance A 280 ~ 298nm> 8 at 290nm, -8). This organic material in the UVc band (200 ~ 280nm) with high transmittance, deep cut-off obvious characteristics. The experiment also found that by adjusting the pH of the solvent and selecting different polarity of the solvent, the original two absorption peaks disappear, while at λ = 290nm at a new strong absorption peak, and the peak can be 251 ~ 260nm Shift within range. This feature of the material, combined with the traditional coating and glass technology, it is possible to prepare a good performance of UV filters.