溶剂效应对3-氨基苯甲酸吸收与发射光谱性质的影响

Influence of solvent effect on absorption and emission spectra of 3-aminobenzoic acid

研究了溶剂效应对3-氨基苯甲酸(3-aminobenzoic acid,3ABA)吸收和荧光的影响。在几种不同的溶剂中进行了测试,并根据一般和特殊的溶质-溶剂相互作用对吸收和发射波长进行了分析。在非质子型溶剂中,随溶剂极性的增加,3ABA的吸收波长出现轻微红移,发射波长受一般溶剂效应的影响,变化不大;而在极性质子型溶剂中,3ABA的吸收波长发生了蓝移,发射波长主要受特殊溶剂效应的影响,Stokes位移和半高峰宽FWHM显著增大。研究结果对3ABA与其他物质作用得到新型材料时合成条件的选择提供了一定的借鉴意义。

Effect of solvents on the absorption and fluorescence spectra of 3-aminobenzoic acid(3ABA)has been investigated.Measurements were performed in several solvents and analysis of the absorption and emission wavelengths were made based on the framework of general and specific solute-solvent interactions.In aprotic solvents,the absorption wavelengths of 3ABA exhibit a slight red shift upon increasing the solvent polarity,and the emission wavelengths are affected by the general solvent effect,with little change.However,in polar protic solvents,the absorption wavelengths of 3ABA are blue shifted,and the emission wavelengths are mainly affected by the special solvent effect,with the obvious increase of Stokes shift and full width at half maximum(FWHM).The results provide a reference for the selection of synthesis conditions when 3ABA interacts with other substances to obtain new materials.