基于钌（II）星型聚合物配合物的荧光氧传感器。

Luminescence oxygen sensor based on a ruthenium(II) star polymer complex.

机构信息

Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.

出版信息

Anal Chem. 2010 Feb 1;82(3):917-21. doi: 10.1021/ac9020837.

DOI:10.1021/ac9020837

PMID:20050641

Abstract

A novel quenchometric oxygen sensor based on a low polydispersity (PDI) star polymer Ru(bpyPS(2))(3)(2) (bpy = 2,2'-bipyridine, PS = polystyrene) is reported. The synthesis, characterization, photophysics, and oxygen sensing properties are examined. Combining the polystyrene support with the oxygen sensing ruthenium complex provides much higher doping levels without microcrystallization of the complex than traditional two-component sensors. The single molecule approach also avoids sensor leaching. While the polydispersity was 1.10, indicating a very tight distribution of molecular weights, sensor heterogeneity was not completely eliminated, as the luminescence decays were still multiexponentials. The likely source of this heterogeneity and possible methods for generating more homogeneous materials are discussed.

摘要

一种新型的猝灭型氧传感器，基于低多分散性（PDI）星型聚合物Ru(bpyPS(2))(3)(2)（bpy = 2,2'-联吡啶，PS = 聚苯乙烯）。报告了其合成、表征、光物理和氧传感性能。将聚苯乙烯载体与氧传感钌配合物结合，提供了比传统的两相传感器更高的掺杂水平，而不会使配合物微结晶。单分子方法也避免了传感器浸出。虽然多分散性为 1.10，表明分子量分布非常紧密，但由于荧光衰减仍然是多指数的，因此仍然没有完全消除传感器的异质性。讨论了这种异质性的可能来源以及产生更均匀材料的可能方法。