title: Probing the structural origins of vapochromism of a triarylboron-functionalized platinum(II) acetylide by optical and multinuclear solid-state NMR spectroscopy.
abstract: A vapoluminescent triarylboron-functionalized platinum(II) complex that displays a mechanism of vapochromism differing from all previously reported platinum(II) compounds has been synthesized. The luminescence color of 1 switches in response to many volatile organic compounds in the solid state, including hexanes, CH(2)Cl(2), benzene, and methanol. While vapochromism due to changes in Pt-Pt or π-π stacking interactions has been commonly observed, absorption and luminescence studies and single-crystal and powder X-ray diffraction data as well as multinuclear solid-state NMR experiments ((195)Pt, (13)C, (11)B, (2)H, and (1)H) revealed that the vapochromic response of 1 is instead due to changes in the excited-state energy levels resulting from local interactions of solvent molecules with the complex. Furthermore, these interactions result in inversion of the lowest-energy excited states of the complex in some cases, the first observation of this phenomenon in the solid state.
authors.affiliation: Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6.
authors.forename: Zachary M
authors.initials: ZM
authors.lastname: Hudson
authors.forename: Christina
authors.initials: C
authors.lastname: Sun
authors.forename: Kristopher J
authors.initials: KJ
authors.lastname: Harris
authors.forename: Bryan E G
authors.initials: BE
authors.lastname: Lucier
authors.forename: Robert W
authors.initials: RW
authors.lastname: Schurko
authors.forename: Suning
authors.initials: S
authors.lastname: Wang
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D018360:Crystallography, X-Ray; D049449:Luminescence; D008163:Luminescent Measurements; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D009944:Organoplatinum Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D001896:Boron Compounds; D009944:Organoplatinum Compounds; D055549:Volatile Organic Compounds