OXYGEN SENSORS BASED ON LUMINESCENCE QUENCHING - INTERACTIONS OF METAL-COMPLEXES WITH THE POLYMER SUPPORTS
OXYGEN SENSORS BASED ON LUMINESCENCE QUENCHING - INTERACTIONS OF METAL-COMPLEXES WITH THE POLYMER SUPPORTS
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DOI：
10.1021/ac00095a004
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发表时间：
1994-12-01
影响因子：
7.4
通讯作者：
DEGRAFF, BA
中科院分区：
文献类型：
--
作者：
XU, WY;MCDONOUGH, RC;DEGRAFF, BA
研究了[Ru（Ph（2）phen）（3）]Cl-2（Ph（2）phen = 4，7-二苯基-1，10-菲咯啉）在不同系列聚合物中的氧猝灭作用，其中大多数聚合物都含有聚二甲基硅氧烷（PDMS）。系统的变化，在聚合物的性能，以描绘的结构特征，重要的是令人满意的使用支持氧传感器。大多数测量使用含有PDMS区域的均聚物或共聚物进行，尽管一些测量是在小环硅氧烷聚合物上进行的。特别是，淬灭行为作为聚合物结构以及极性共聚物交联剂的类型和量的函数进行了检查。加入交联剂以提高氧探针在非极性聚合物中的溶解度。此外，加入疏水性二氧化硅以改变淬灭性质。域模型被用来解释作为添加剂和交联剂的功能的氧淬灭性能的变化。这些考虑导致了迄今为止报道的最灵敏的基于铼的传感器。不同结构域对复合物的相对亲和力和结构域对氧猝灭的功效控制传感响应的总体行为。提出了氧传感器用聚合物支撑体的设计原则。
Oxygen quenching of [Ru(Ph(2)phen)(3)]Cl-2 (Ph(2)phen = 4,7-diphenyl-1,10-phenanthroline) has been studied in a diverse series of polymers, most with a common poly(dimethylsiloxane) (PDMS) component. Systematic variations in the polymer properties have been made in order to delineate the structural features important for satisfactory use of supports for oxygen sensors. Most measurements were made using homo- or copolymers containing a PDMS region, although some measurements were made on small ring siloxane polymers. In particular, quenching behavior was examined as a function of polymer structure as well as the type of and amount of polar copolymer cross-linkers. Cross-linkers were added to enhance the solubility of oxygen probes in an otherwise nonpolar polymer. In addition, hydrophobic silica was added to alter quenching properties. Domain models are used to explain the variations in oxygen quenching properties as a function of additives and cross-linkers. These considerations have led to the most sensitive ruthenium-based sensor reported to date. The relative affinity of the different domains for the complex and the efficacy of the domains for oxygen quenching control the overall behavior of the sensing response. Guidelines far design of suitable polymer supports for oxygen sensors are proposed.