ON/OFF Red Emission from Azaporphine in a Coordination Cage in Water
作者： Kosuke Ono , Jeremy K. Klosterman , Michito Yoshizawa , Kentaro Sekiguchi , Tahei Tahara
DOI: 10.1021/JA904875Y
关键词:
摘要: Red-emissive molecules have important applications as chemosensors, biological tags, and new light source materials but are severely limited by solubility the tendency to form nonemissive aggregrates. Here we present an unusual example where a coordination cage sequesters maintains red-emissive properties of tetraazaporphine (TAP) in aqueous solution. Additionally, encapsulation within highly cationic host lowers pK(a) TAP interior protons, leading formation acid/base ON/OFF fluorescent switch.
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