title: Temperature and Oxygen Sensing Properties of Ru(II) Covalently-Grafted Sol-Gel Derived Ormosil Hybrid Materials.
abstract: In this article, oxygen and temperature-sensing hybrid materials consisting of [Ru(Phen)3]2+ portions covalently-grafted onto the sol-gel derived ormosil network were prepared by co-condensation of tetraethoxysilane (TEOS) using n-octyltriethoxysilane as the network modifier. For comparison purposes, the hybrid materials in which [Ru(Phen)3]2+ were conventionally physically-incorporated into the matrix were also prepared. The obtained hybrid materials were characterized by Fourier transform infrared (FT-IR), luminescence intensity oxygen quenching Stern-Volmer plots, temperature quenching plots and excited-state lifetime. The near linear Stern-Volmer plots can be attributed to the approximate heterogeneous environment of the luminophore within the ormosil materials. The results reveal that the. covalently-grafted sample is more sensitive to 02, and has a higher sensing sensitivity and a higher thermal activation energy compared to the physically-incorporated one, since these Ru(II) molecules are strongly covalently-grafted onto the Si-O network via the CH2-Si bonds and less -OH group.
authors.forename: Haoran
authors.initials: H
authors.lastname: Zhang
authors.forename: Bingfu
authors.initials: B
authors.lastname: Lei
authors.forename: Hanwu
authors.initials: H
authors.lastname: Dong
authors.forename: Yingliang
authors.initials: Y
authors.lastname: Liu
authors.forename: Mingtao
authors.initials: M
authors.lastname: Zheng
authors.forename: Yong
authors.initials: Y
authors.lastname: Xiao