α-Cyanostilbene based fluorophores: aggregation-induced enhanced emission, solvatochromism and the pH effect
作者:Veerabhadraiah Palakollu、Sriram Kanvah
DOI:10.1039/c4nj01103a
日期:——
investigated. Stilbenes (1 and 4) exhibit weak emission behavior in homogeneous solvents but show remarkable red-shifted emission along with enhanced intensity in water and in the solid state. This phenomenon is due to the aggregation induced enhanced emission effect. Other stilbenes also exhibit significant solvatochromic emission behavior and have similar enhanced emission characteristics in water and the solid-state
合成了一系列被二甲基苯胺,二苯基苯胺和咔唑取代的α-氰基对苯二酚,并研究了它们在均相溶剂,二恶烷-水二元混合物和固态下的光谱性质。Stilbenes(1和4)在均相溶剂中显示出较弱的发射行为,但在水和固态中显示出显着的红移发射以及增强的强度。这种现象是由于聚集引起的增强的发射效应。其他对苯二酚在水和固态中也表现出显着的溶剂变色发光行为,并具有类似的增强发光特性。发射对酸性或碱性强度变化的敏感性确定了这些分子作为荧光探针的实用性。