Chiral platinum (II) extended linear-chain materials: Search for an enantiomeric sensor (Part II)

CHED 283

Steven M. Drew, sdrew@carleton.edu1, Ian M. Hill, hilli@carleton.edu1, Yuichiro Takeshita, takeshiy@carleton.edu1, Andrew J. Young, youngan@carleton.edu1, Aaron D. Lackner1, Carrie E. Buss2, Jason R. Burney, burney@chem.umn.edu2, and Kent R. Mann2. (1) Department of Chemistry, Carleton College, 1 North College Street, Northfield, MN 55057, (2) Department of Chemistry, University of Minnesota, Minneapolis, MN 55455
Solid-state platinum (II) extended linear chain (ELC) materials have previously been shown to be strongly vapochromic and fluorescent. One mechanism that explains vapochromic behavior is selective intermolecular attraction between the platinum ELC material and a penetrating volatile organic compound (VOC). This suggests that enantiomeric selectivity may be possible between chiral platinum ELCs and chiral VOCs. The two enantiomerically pure double salt ELCs of [Pt(β-methylphenethylisonitrile)4][Pt(CN)4] have been synthesized using published techniques, and the vapochromic characteristics of these materials have been surveyed in the presence of chiral and achiral VOCs. Solid-state fluorescence data for R- and S-[Pt(β-methylphenethylisonitrile)4][Pt(CN)4] in the presence of R- and S-2-butanol suggests that these materials display enantiomeric selectivity.