荧光性质可调控的π-共轭寡聚吡啶配体

主要介绍含寡聚吡啶配体基元的共轭寡聚物的结构、光物理性质及其与金属离子的络合行为,尤其是芳香基团取代的联二吡啶、1,10-邻菲罗啉和2,2′:6,′2′′-联三吡啶。在溶液中,这类配体对可见光表现出较强的吸收,同时具有较强的荧光发射能力,并且可通过加入外来物如质子或金属离子来调控其光物理性能。扼要讨论配体质子化以及与金属离子配位对其光物理性质的影响。

H-Conjugated Oligopyridine Ligands with Tunable Fluorescence

In this contribution,the authors briefly introduced the structures and photophysical properties of a series of oligomer incorporating polypyridine units,and complexation behavior of these ligands with metal ions.The case of 2,2-bipyridine,1,10-phenanthroline and the tridentate 2,2′:6′,2″-terpyridine substituted with aromatic groups as coordinating building blocks is emphasized.These structures displayed intense visible absorption and fluorescence emission properties in solution that can be actively modulated by addition of exogenous species,such as protons or metal ions.The effects on the photophysical properties upon protonation or metal complexation are described.