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Luminescence and oxygen sensing properties of ORMOSILs covalently grafted with a novel ruthenium(II) complex

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Abstract

A series of VTES/TEOS composite xerogels covalently grafted with a novel complex Ru(phen)2(Dppz-Si)Cl2 were prepared, using the alkoxysilane-modified dipyrido[3,2-a:2′,3′-c]phenazine compound (denoted as Dppz-Si) as the second ligand of the Ru(phen)2Cl2 (phen = 1,10-phenanthroline) complex and a precursor of the sol–gel process. Bulk xerogels were obtained by co-hydrolyzing and co-condensation from a mixture of triethoxysilane (TEOS), Ru(phen)2(Dppz-Si)Cl2 and Vinyltriethoxysilane (VTES). The luminescence intensity of composite xerogels is enhanced by 18.2 times, and the sensitivity is improved from 1.1 to 3.1 by optimizing the molar ratio of VTES to TEOS. The composite xerogel containing 80% VTES in precursor was optimal, exhibiting the maximum luminescence intensity and sensitivity. These results indicate that the complex Ru(phen)2(Dppz-Si)Cl2 is sensitive to oxygen concentration, VTES is a kind of excellent organic modifier and can greatly improved photoluminescent (PL) and oxygen sensing performances.

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Acknowledgements

The authors gratefully thank the financial supports of One Hundred Talents Project from Chinese Academy of Sciences and the National Natural Science Foundations of China (Grant No. 50872130).

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Authors and Affiliations

  1. Department of Chemistry, Polyoxometalate Science Key Laboratory of Ministry of Education, Northeast Normal University, Changchun, 130024, People’s Republic of China

    Xiudong Wu & Jun Ying

  2. Key Laboratory of Excited State Processes, Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, People’s Republic of China

    Yan Cong, Yanhong Liu & Bin Li

Authors
  1. Xiudong Wu
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  2. Yan Cong
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  3. Yanhong Liu
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  4. Jun Ying
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  5. Bin Li
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Correspondence to Bin Li.

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Wu, X., Cong, Y., Liu, Y. et al. Luminescence and oxygen sensing properties of ORMOSILs covalently grafted with a novel ruthenium(II) complex. J Sol-Gel Sci Technol 49, 355–363 (2009). https://doi.org/10.1007/s10971-008-1866-1

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  • DOI: https://doi.org/10.1007/s10971-008-1866-1

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