Photoinduced Signal Amplification through Controlled Externally Sensitized Fragmentation in Masked Sensitizers
作者:Rudresha Kottani、Janaki R. R. Majjigapu、Alexei Kurchan、Kavitha Majjigapu、Tiffany P. Gustafson、Andrei G. Kutateladze
DOI:10.1021/ja066692u
日期:2006.11.1
conjugation between the two aromatic moieties, effectively masking the sensitizer. A novel photoamplification strategy is developed based on photosensitized cleavage in such adducts, where each fragmentation event releases more diaryl ketone, capable of sensitization. As a result, mass release of dithianes, triggered with a very small amount of the initiator, is observed. Such amplified release can
将锂化二噻烷添加到二芳基酮(潜在的电子转移敏化剂)中会破坏两个芳族部分之间的共轭,有效地掩盖敏化剂。基于此类加合物中的光敏裂解,开发了一种新的光放大策略,其中每个碎裂事件都会释放更多能够敏化的二芳基酮。结果,观察到由极少量引发剂引发的二噻烷的大量释放。这种放大释放可以取决于分子识别事件,为高通量生物分析应用提供了一种有前途的方法。使用微米和纳米尺寸的聚合物载体(包括树枝状聚合物)证明了这一概念。