O2-responsive chemical sensors based on hybrid xerogels that contain fluorinated precursors
O2-responsive chemical sensors based on hybrid xerogels that contain fluorinated precursors
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DOI：
10.1366/000370206778397489
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发表时间：
2006-09-01
影响因子：
3.5
通讯作者：
Bright, Frank V.
中科院分区：
文献类型：
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作者：
Bukowski, Rachel M.;Davenport, Michael D.;Bright, Frank V.
我们报告的发展和分析数字的优点与几个新的O-2响应传感器材料。这些新的传感材料是通过将发光体三（4，7-二苯基-1，10-菲咯啉）钌（II）（[Ru（dpp）（3）]（2+））螯合在由以下甲氧基硅烷中的两种组成的混合干凝胶中形成的：四甲氧基硅烷、正丙基三甲氧基硅烷、3，3，3-三氟丙基三甲氧基硅烷、苯乙基三甲氧基硅烷和五氟苯基丙基三甲氧基硅烷。稳态和时间分辨发光测量被用来调查这些混合干凝胶为基础的传感器材料，并阐明所观察到的性能的根本原因。结果表明，许多[Ru（dpp）（3）]（2+）掺杂的复合材料形成视觉上均匀、无裂纹的干凝胶膜，其可用于构造具有线性校准曲线和优异的长期稳定性的O2传感器。据我们所知，[Ru（dpp）（3）]（2+）掺杂的氟化混合干凝胶也表现出任何报道的基于[Ru（dpp）（3）]（2+）的传感器平台的最高O-2灵敏度。
We report the development and analytical figures of merit associated with several new O-2-responsive sensor materials. These new sensing materials are formed by sequestering the luminophore tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) ([Ru(dpp)(3)](2+)) within hybrid xerogels that are composed of two of the following methoxysilanes: tetramethoxysilane, n-propyl-trimethoxysilane, 3,3,3-trifluoropropyl-trimethoxysilane, phenethyl-trimethoxysilane, and pentafluorophenylpropyl-trimethoxysilane. Steady-state and time-resolved luminescence measurements are used to investigate these hybrid xerogel-based sensor materials and elucidate the underlying reasons for the observed performance. The results show that many of the [Ru(dpp)(3)](2+)-doped composites form visually uniform, crack-free xerogel films that can be used to construct 02 sensors that have linear calibration curves and excellent long-term stability. To the best of our knowledge, the [Ru(dpp)(3)](2+)-doped fluorinated hybrid xerogels also exhibit the highest O-2 sensitivity of any reported [Ru(dpp)(3)](2+)-based sensor platform.