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          Institute: MPI für Polymerforschung     Collection: MPI Polymerforschung     Display Documents



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ID: 50226.0, MPI für Polymerforschung / MPI Polymerforschung
Guest-host systems of 1,3,5-tristyrylbenzenes
Authors:Meier, H.; Karpouk, E.; Lehmann, M.; Schollmeyer, D.; Enkelmann, Volker
Language:English
Date of Publication (YYYY-MM-DD):2003-08
Title of Journal:Zeitschrift für Naturforschung Section B-A Journal of Chemical Sciences
Journal Abbrev.:Z.Naturforsch. B
Volume:58
Issue / Number:8
Start Page:775
End Page:781
Review Status:not specified
Audience:Not Specified
Abstract / Description:(E,E,E)-1,3,5-Tris(3,4,5-trimethoxystyryl)benzene (1a) forms monoclinic crystals of the space group P2(1)/c. Incorporation of three transoid diacetyl guest molecules between the three arms leads to triclinic crystals of the space group P1. The styryl groups, originally present in a nonsymmetrical conformation, are simultaneously transformed to a C-3 arrangement. (EEE)-1,3,5-Tris(3,4,5-tripropoxystyryl)benzene (1b) forms monoclinic crystals of the space group P2(1)/c. The C-3 arrangement of the styryl groups is present in the first, the unsymmetrical arrangement in the second modification. Incorporation of two acetone guests in the largest and the middle-sized angle space between the styryl arms in the unsymmetrical arrangement, leads to monoclinic crystals of the space group P2(1)/n. The third (smallest) angle space is filled with a propoxy chain of the neighboring molecule. The pure host crystals show significant deviations from planarity which are strongly reduced by the incorporation of the guest molecules.
Free Keywords:guest-host crystals, triplet sensitizer
Comment of the Author/Creator:Date: 2003, AUG
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Affiliations:MPI für Polymerforschung
External Affiliations:Univ Mainz, Inst Organ Chem, D-55099 Mainz, Germany.
Identifiers:ISI:000185815300009 [ID No:1]
ISSN:0932-0776 [ID No:2]
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