Humidity sensing by luminescence of Eu(III)-doped mesoporous silica thin film

Autor:	Young-Uk Kwon, Myungkoo Suh, Jinyoung Park
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Materials science Ligand Inorganic chemistry Doping Binary compound General Chemistry Mesoporous silica Condensed Matter Physics chemistry.chemical_compound Dicarboxylic acid chemistry Mechanics of Materials Molecule General Materials Science Thin film Luminescence
Zdroj:	Microporous and Mesoporous Materials. 127:147-151
ISSN:	1387-1811
DOI:	10.1016/j.micromeso.2009.07.008
Popis:	We report the luminescence properties of Eu(III)-doped mesoporous silica thin films (Eu-MSTFs) and their application to humidity sensing. Eu-MSTFs with ∼9 nm-sized pores ordered into a wormlike pore structure were synthesized. The Eu(III) ions inside the pores could be coordinated with 1,10-phenanthroline or 2,5-pyridine dicarboxylic acid ligand by diffusing in the ligand molecules through the pores. The ligand molecules increased the luminescence intensity of the Eu(III) ions. The luminescence intensity of the ligand-treated Eu-MSTFs varied linearly with the humidity level in the environment. The humidity sensing by this method is repeatable over many times.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::368bf2bd1d8a543d6884196b4e51c34e https://doi.org/10.1016/j.micromeso.2009.07.008 Zobrazit plný text záznamu Full Text from ScienceDirect