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Record 1 of 4207
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)
External Online Source: doi:10.1021/ja00035a013
Author and Affiliation:
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)
Mcmanus, S. P.(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Zutaut, S. E.(Alabama Univ., Huntsville, United States)
Abstract: 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.
Publication Date: Jan 01, 1992
Document ID:
19930048182
(Acquired Dec 28, 1995)
Accession Number: 93A32179
Subject Category: CHEMISTRY AND MATERIALS (GENERAL)
Document Type: Journal Article
Publication Information: American Chemical Society, Journal (ISSN 0002-7863); 114; 9; p. 3247-3251.
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ACETYLENE; OPTICAL PROPERTIES; POLYMER CHEMISTRY; POLYMERIC FILMS; PYRROLES; SYNTHESIS (CHEMISTRY); COMPUTERIZED SIMULATION; THIN FILMS
Imprint And Other Notes: American Chemical Society, Journal vol. 114, no. 9 p. 3247-3251. 1992
Availability Source: Other Sources
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