Extruded polymer films pigmented with a heterogeneous ion-pair based lumophore for O2 sensing
Extruded polymer films pigmented with a heterogeneous ion-pair based lumophore for O2 sensing
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带有基于异质离子对的发光团着色的挤出聚合物薄膜，用于 O2 传感
DOI：
10.1039/c3an01141k
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Mills A
中科院分区：
文献类型：
--
作者：
Mills A
描述了一种聚合 Ru(II)-二亚胺发光 O2 传感器的新方法。 Ru(II)-二亚胺，三(4,7-二苯基-1,10-菲咯啉)二氯化钌(II) ([Ru(dpp)3]2+)，首先与异质 TiO2 颗粒表面进行离子配对，由于水溶液的碱性而带负电，从而产生具有惊人高的 O2 敏感颜料。 氧敏感性（即 PO2 (S = 1/2) = 0.002 atm，其中 PO2 (S = 1/2) 定义为将初始无氧发光减少 50% 所需的氧气量）以及对氧气的快速响应。该颜料在低密度聚乙烯 (LDPE) 中挤出，形成薄 (60 μm)、柔性 O2 传感塑料薄膜，其 O2 灵敏度 (PO2 (S = 1/2) = 0.84 atm) 与文献中报道的更传统的基于均匀室温离子对的 O2 传感器油墨薄膜相当。
A novel approach to polymeric Ru(II)–diimine luminescent O2 sensors is described. The Ru(II)–diimine, tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride ([Ru(dpp)3]2+), is first ion-paired to the surface of heterogeneous TiO2 particles, rendered negatively charged due to the alkali nature of the aqueous solution, to produce an O2 sensitive pigment with a strikingly high oxygen sensitivity (i.e. PO2 (S = 1/2) = 0.002 atm, where PO2 (S = 1/2) is defined as the amount of oxygen required to reduce the initial, oxygen free luminescence by 50%), and a rapid response to oxygen. The pigment is extruded in low density polyethylene (LDPE) to produce a thin (60 μm), flexible, O2 sensing plastic film, with an O2 sensitivity (PO2 (S = 1/2) = 0.84 atm) comparable to the more traditional homogeneous lumophore ion-pair based O2 sensor ink films reported in the literature.