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Enantiomerically selective vapochromic sensing
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DOI：10.1016/j.snb.2010.05.059.png)
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Abstract
En 中文
The double salt materials platinum(II)tetrakis-R-beta-methylphenethylisocyanide tetracyanoplatinate(II) (R-1) and platinum(II)tetrakis-S-beta-methylphenethylisocyanide tetracyanoplatinate(II) (S-1) have been synthesized with highly enantiomerically pure isocyanide ligands. The vapochromic behavior of R-1 and S-1 has been studied in the presence of a chiral probe vapor to determine if enantiomerically selective sensing is possible with these materials. The wavelength of maximum emission values (lambda(max)) for solid-state vapoluminescence spectra of R-1 and S-1 in the presence of enriched R- and S-2-butanol vapor differ by approximately 10 nm while the lambda(max) values for R-1 and S-1 under nitrogen are nearly identical. Principal component analysis has been performed on datasets that consist of a series of vapoluminescence spectra of R-1 and S-1 as a function of the R/S-2-butanol ratio. Plots of principal component one versus R/S-2-butanol ratio show mirror image trends for R-1 relative to S-1. While care must be taken to control water vapor and monitor R-1 and S-1 for possible decomposition, the reported results nevertheless show that R-1 and S-1 are capable of enantiomerically selective vapochromic sensing. (C) 2010 Elsevier B.V. All rights reserved.
Keywords:
Vapochromic
Chiral
Gas sensor
Platinum double salt materials
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