Synthesis and sensor activity of photostable blue emitting 1,8-naphthalimides containing s-triazine UV absorber and HALS fragments
作者:Vladimir B. Bojinov、Ionka P. Panova、Danail B. Simeonov、Nikolai I. Georgiev
DOI:10.1016/j.jphotochem.2010.01.015
日期:2010.2
Two novel highly photostable blue emitting 1,8-naphthalimides, containing active fragments of both a hindered amine radical scavenger (HALS) and an s-triazine UV absorber were synthesized for the first time. They showed substantially higher photostability in respect to other similar fluorescent brighteners, not containing either UV absorber or HALS component in their molecules. Novel compounds were
两种新型的高光稳定发蓝光的1,8-萘二甲酰亚胺,含有受阻胺自由基清除剂(HALS)和s的活性片段首次合成了β-三嗪紫外线吸收剂。与其他类似的荧光增白剂相比,它们在分子中不包含紫外线吸收剂或HALS组分,显示出更高的光稳定性。通过在1,8-萘二甲酰亚胺荧光团的C-4位置掺入阳离子受体,基于光诱导的电子转移,新化合物还被配置为“荧光团-间隔子-受体”系统。通过在金属离子和质子存在下荧光强度的变化来评估新化合物检测阳离子的能力。发现金属离子和质子的存在不允许光致电子转移,从而导致1,8-萘二甲酰亚胺荧光强度增强。关闭-上” pH值切换器和对金属离子具有朝向锌显着选择性的荧光检测器2+和Cu 2+离子。