摘要
设计合成了具有较长发射波长的苯并香豆素醛——8-二乙氨基-2-氧-2H-苯并[h]香豆素醛(BCA),通过吸收和荧光光谱研究其在不同溶剂中的光物理性质。结果表明,BCA具有明显的溶致变色效应和宽的颜色变化范围。随着溶剂极性的增加,其荧光发射可从蓝绿光变到红光,而荧光量子效率则从0.98减小到0.26。
A long-wavelength emssion Benzo[h]coumarin aldehyde-8-（diethylamino）-2-oxo-2H-benzo[h]coumarin aldehyde（BCA）was design and synthesized.Its photophysical properties in different solvents were investigated by absorption and fluorescence spectroscopy.An obvious slovatochromism and a large variation in color were observed.With the increase of solvent polarity,its luminescence changed from blue-green to red and the fluorescence quantum yield decreased from 0.98 to 0.26.
出处
《影像科学与光化学》
CAS
CSCD
北大核心
2015年第2期154-160,共7页
Imaging Science and Photochemistry
基金
国家自然科学面上基金项目(21373250)资助
关键词
香豆素醛
光物理性质
溶致变色效应
coumarin aldehyde
photophysical properties
slovatochromism
