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Synthesis, vapor growth, polymerization, and characterization of thin films of novel diacetylene derivatives of pyrrole. The use of computer modeling to predict chemical and optical properties of these diacetylenes and poly(diacetylenes)In the present work two diacetylene derivatives of pyrrole which are predicted by semiempirical AM1 calculations to have very different properties, are synthesized; the polymerizability of these diacetylenes in the solid state is determined, and the results are compared to the computer predictions. Diacetylene 1 is novel in that the monomer is a liquid at room temperature; this may allow for the possibility of polymerization in the liquid state as well as the solid state. Thin poly(diacetylene) films are obtained from compound 1 by growing films of the monomer using vapor deposition and polymerizing with UV light; these films are then characterized. Interestingly, while the poly(diacetylene) from 1 does not possess good nonlinear optical properties, the monomer exhibits very good third-order effects (phase conjugation) in solution. Dilute acetone solutions of the monomer 1 give intensity-dependent refractive indices on the order of 10 exp -6 esu; these are 10 exp 6 times better than for CS2.
Document ID
19930048182
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Paley, M. S.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Frazier, D. O.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Abeledeyem, H.
(NASA Marshall Space Flight Center Huntsville; Alabama Agricultural and Mechanical Univ., Normal, United States)
Mcmanus, S. P.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Zutaut, S. E.
(Alabama Univ. Huntsville, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: American Chemical Society, Journal
Volume: 114
Issue: 9
ISSN: 0002-7863
Subject Category
Chemistry And Materials (General)
Accession Number
93A32179
Distribution Limits
Public
Copyright
Other

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