Photoluminescence and Crystal Structures of Chiro-Optical 1,1 '-Bi-2-naphthol Crystals and Their Inclusion Compounds with Dimethyl Sulfoxide

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Title:	Photoluminescence and Crystal Structures of Chiro-Optical 1,1 '-Bi-2-naphthol Crystals and Their Inclusion Compounds with Dimethyl Sulfoxide
Authors:	Lee,T;Peng,JF
Contributors:	化學工程與材料工程學系
Keywords:	EMISSION;FLUORESCENCE;DNA;2,2'-DIHYDROXY-1,1'-BINAPHTHYL;RECOGNITION;ASSEMBLIES;FILMS
Date:	2010
Issue Date:	2012-03-27 16:25:43 (UTC+8)
Publisher:	國立中央大學
Abstract:	Crystal structures of (R)-(+)-1,1'-bi-2-naphthol (BINOL), (R,S)-(+/-)-BINOL, (S)-(-)-BINOL, (R,S)-(+/-)-BINOL center dot DMSO, (R)-(+)-BINOL center dot 2DMSO, (R,S)-(+/-)-BINOL center dot 2DMSO, and (S)-(-)-BINOL center dot 2DMSO (DMSO = dimethyl sulfoxide) were determined and related to their photoluminescence measurements systematically. The intensities of both excitation and emission bands of BINOL tended to rise as the average distance between BINOL molecules increased. The polarity of DMSO in the inclusion compounds with DM SO probably induced a different magnitude of the Davydov splitting and the degree of shifting of the levels of BINOL molecules. The stabilization of the excited state and the lowering of its energy led to a red-shifted emission. It was proven that photoluminescence of lumophore molecules in the solid state was able to be fine-tuned through supramolecular organization and the host guest interaction by crystallization of a racemic compound (i.e., co-crystallization of R and S enantiomers), by formation of an enantiomorph, and by solvation with different stoichiometric ratios of a guest solvent. Therefore, this kind of supramolecular organization has significant design and characterization implications for organic solid-state lasers and devices.
Relation:	CRYSTAL GROWTH & DESIGN
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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