TY - JOUR AU - Su-Ngam, Chanissnun AU - Thang, San H. AU - Wongchaisuwat, Atchana AU - Meesuk, Ladda PY - 2013/06/30 Y2 - 2024/03/29 TI - Dissolved oxygen sensor film using ruthenium polypyridine complex as luminophore JF - Journal of Metals, Materials and Minerals JA - J Met Mater Miner VL - 23 IS - 1 SE - Original Research Articles DO - UR - https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/87 SP - AB - Ruthenium polypyridine complex was synthesized by using RAFT process. The Ruthenium was immobilized in 2 silicone matrices, polydimethylsiloxane(PDMS) and KE 200 (silicone elastomer base)/CX200 (curing agent). KE 200/CX200 is the alcohols curing type silicone. Both sensor films showed absorption peak at 460 nm and  luminescence peak at 610 nm. The KE200/CX200 film gave linear response to dissolved oxygen up to 80% O<sub>2 </sub>(18 ppm) follow Stern-Volmer equation with R<sup>2</sup> of 0.990. The measured luminescence intensity decreased with increasing dissolved oxygen water temperature from 25 to 70°c. After being irradiated with 460 nm light source for 3 hrs, the sensor film still showed good stability. ER -