Solid-state polymorphic transition and solvent-free self-assembly in the growth of organic crystalline microfibers

被引：21

作者：

Tsekova, Daniela. S. ^{[1
]}

Escuder, Beatriu ^{[2
]}

Miravet, Juan F. ^{[1
,2
]}

机构：

[1] Univ Chem Technol & Met, Dept Organ Chem, BU-1756 Sofia, Bulgaria

[2] Univ Jaume 1, Dept Inorgan & Organ Chem, Castellon de La Plana 12071, Spain

来源：

CRYSTAL GROWTH & DESIGN | 2008年 / 8卷 / 01期

关键词：

D O I：

10.1021/cg7007446

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 degrees 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.

引用

页码：11 / 13

页数：3

共 17 条

[1] Surface-mediated nucleation in the solid-state polymorph transformation of terephthalic acid
Beckham, Gregg T.
Peters, Baron
Starbuck, Cindy
Variankaval, Narayan
Trout, Bernhardt L.
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (15) : 4714 - 4723
[2] Bernstein J., 2020, Polymorphism in Molecular Crystals, Vsecond, DOI 10.1093/oso/9780199655441.001.0001
[3] Self-assembly of fibers and fibrils
Binder, Wolfgang H.
Smrzka, Oskar W.
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (44) : 7324 - 7328
[4] Structure and property of self-assemble valinyl bolaform amides having different chirality
Doi, M
Asano, A
Yoshida, H
Inouguchi, M
Iwanaga, K
Sasaki, M
Katsuya, Y
Taniguchi, T
Yamamoto, D
[J]. JOURNAL OF PEPTIDE RESEARCH, 2005, 66 (04): : 181 - 189
[5] Organogel formation by coaggregation of adaptable amidocarbamates and their tetraamide analogues
Escuder, B
Martí, S
Miravet, JF
[J]. LANGMUIR, 2005, 21 (15) : 6776 - 6787
[6] Garay AL, 2007, CHEM SOC REV, V36, P846, DOI 10.1039/b600363j
[7] Excellent gelators for organic fluids: Simple bolaform amides derived from amino acids
Hanabusa, K
Tanaka, R
Suzuki, M
Kimura, M
Shirai, H
[J]. ADVANCED MATERIALS, 1997, 9 (14) : 1095 - 1097
[8] Kinetics of 5α-cholestan-3β,6-yl N-(2-naphthyl)carbamate/n-alkane organogel formation and its influence on the fibrillar networks
Huang, X
Terech, P
Raghavan, SR
Weiss, RG
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (12) : 4336 - 4344
[9] Distinct kinetic pathways generate organogel networks with contrasting fractality and thixotropic properties
Huang, Xiao
Raghavan, Srinivasa R.
Terech, Pierre
Weiss, Richard G.
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (47) : 15341 - 15352
[10] Anatomy of a gel. Amino acid derivatives that rigidify water at submillimolar concentrations
Menger, FM
Caran, KL
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (47) : 11679 - 11691

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