School of Chemistry and Chemical Engineering, Queen's University, Stranmillis Road, Belfast, BT9 5AG, UK.
Analyst. 2013 Nov 7;138(21):6488-93. doi: 10.1039/c3an01141k.
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), 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.
一种新型的聚合物 Ru(II)-二亚胺发光 O2 传感器的方法。Ru(II)-二亚胺，三（4,7-二苯基-1,10-菲咯啉）钌（II）二氯化物（[Ru（dpp）3]（2+）），首先与异质 TiO2 颗粒的表面离子对，由于水溶液的碱性，带负电荷，产生具有惊人高氧敏性的 O2 敏感颜料（即 PO2（S = 1/2）= 0.002 atm，其中 PO2（S = 1/2）定义为将初始无氧气的发光强度降低 50%所需的氧气量），并且对氧气的响应迅速。颜料在低密度聚乙烯（LDPE）中挤出，制成薄（60μm）、柔韧的 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相发光体离子对的 O2 传感器油墨薄膜相当。
