Source:http://linkedlifedata.com/resource/pubmed/id/21666360
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6
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| pubmed:dateCreated |
2011-6-13
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| pubmed:abstractText |
A sensitive and easily distinguishable cobalt-free humidity indicator of porphyrin-silica gel-MgCl(2) composite was prepared from pH-induced spectra changeable tetraarylporphyrin, silica gel (SiO(2)), and MgCl(2). The pH change arose from proton release under dry conditions, and proton capture under humid conditions by a reversible reaction between MgCl(2) and a silanol group of SiO(2). A pink-orange porphyrin-Si(OH)(2)-MgCl(2) composite was dried to give a green protonated porphyrin-SiO(2)Mg composite. The optimized concentrations of MgCl(2) to make the concentrations of protonated porphyrin maximum under dry conditions were determined by absorption spectrometry of the green composite using a confocal laser scanning microscope as a microscopic spectrometer. Moreover, the green composite was prepared by heating dichloro(tetraarylporphyrinato)phosphorus chloride with MgCl(2) and SiO(2). The humidity-sensitivity of the green composite was evaluated by the absorption spectra under controlled humidity. A distinguishable color change of the green composite took place below 30% of relative humidity.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:issn |
1348-2246
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| pubmed:author | |
| pubmed:copyrightInfo |
2011 © The Japan Society for Analytical Chemistry
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| pubmed:issnType |
Electronic
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| pubmed:volume |
27
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
623-8
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| pubmed:year |
2011
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| pubmed:articleTitle |
Quantitative analysis for a color-change of humidity indicator by microscopic absorption spectrometry.
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| pubmed:affiliation |
Technical Center, Faculty of Engineering, University of Miyazaki, Gakuen-Kibanadai, Miyazaki 889-2192, Japan. t-matsu@cc.miyazaki-u.ac.jp
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| pubmed:publicationType |
Journal Article
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