Solid-State Polymorphic Transition and Solvent-Free Self-Assembly in the Growth of Organic Crystalline Microfibers
comunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
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http://dx.doi.org/10.1021/cg7007446 |
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Title
Solid-State Polymorphic Transition and Solvent-Free Self-Assembly in the Growth of Organic Crystalline MicrofibersDate
2008Publisher
American Chemical SocietyISSN
1528-7483Bibliographic citation
Crystal Growth and Design, 8, 1, p. 11-13Type
info:eu-repo/semantics/articlePublisher version
http://pubs.acs.org/doi/abs/10.1021/cg7007446Abstract
The study of the crystalline xerogel formed by a newly synthesized l-valine and pyridine containing low-molecular-weight gelator reveals a polymorphic transition above 225 °C that is followed by the formation of ... [+]
The study of the crystalline xerogel formed by a newly synthesized l-valine and pyridine containing low-molecular-weight gelator reveals a polymorphic transition above 225 °C that is followed by the formation of microfibers. The habitus of the fibers grown remains stable upon cooling. Microscopic observations lead to the suggestion that after the polymorphic transition, the fibers are formed by a sublimation process. Results obtained reveal the intrinsic tendency of this compound to self-assemble anisotropically in fibers that permit the preparation of organic crystalline micro- and nanofibers in solvent-free conditions. [-]
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Copyright © 2008 American Chemical Society
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- QUIO_Articles [701]