The extensively studied trans-stilbene molecule is known to give only weak fluorescence in solution and inside loosely-fitting synthetic capsules. However, trans-stilbene has been recently studied in the context of antibody interiors, where binding results in strong blue fluorescence. The present research was undertaken to understand the spatial factors that influence stilbene fluorescence. trans-Stilbene was encapsulated in the snug, self-assembled complex 1.1 and exhibited fluorescence quenching due to the distortion of its ground-state geometry. When the complex is elongated by incorporating glycouril spacers, trans-stilbene is allowed to adapt a fully coplanar arrangement and fluorescence returns.
广泛研究的
trans-stilbene分子据知在溶液中和松散配合物内只具有微弱荧光。然而,最近对
trans-stilbene在
抗体内部的研究表明,结合后会产生强烈的蓝色荧光。本研究旨在了解影响stilbene荧光的空间因素。
trans-Stilbene被封装在紧密自组装的复合物
1.1中,并因其基态几何形状的扭曲而显示荧光猝灭。当通过引入glycouril间隔物延长复合物时,
trans-stilbene能够适应完全共面的排列,荧光恢复。