The performance of oxygen sensing films with ruthenium-adsorbed fumed silica dispersed in silicone rubber
1999; Royal Society of Chemistry; Volume: 124; Issue: 5 Linguagem: Inglês
10.1039/a900367c
ISSN1364-5528
AutoresChi‐Ming Chan, Mee-Yee Chan, Minquan Zhang, Wai Hung Lo, Kwok‐Yin Wong,
Tópico(s)Gas Sensing Nanomaterials and Sensors
ResumoOxygen sensing films were prepared by adsorbing the tris(4,7-diphenyl-1,10-phenanthroline)ruthenium dye onto high surface area hydrophilic fumed silica and dispersing the ruthenium-loaded silica in a silicone rubber support. These sensing films possess desirable properties including higher luminescence intensity, larger response towards oxygen and more linear Stern–Volmer calibration curves than films prepared by simple mixing of the ruthenium dye with silicone rubber. However, the response time of these silica-containing films in the recovery cycle is ca. 30–50% longer than the films without silica.
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