Hydrazinoazadipeptides as aromatic solvent gelators

被引:29
作者
Carré, A [1 ]
Le Grel, P [1 ]
Baudy-Floc'h, M [1 ]
机构
[1] Univ Rennes 1, UMR CNRS 6510, Lab Synth & Electrosynth Organ, F-35042 Rennes, France
关键词
hydrazinoazapeptides; gel; electron microscopy; hydrogen bond;
D O I
10.1016/S0040-4039(01)00035-1
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
In the presence of a small amount of HCl, hydrazinoazadipeptides form thermoreversible physical gels with aromatic solvents. These gels are stable to 70-90 degreesC, and can be stored for months. Electron microscopy reveals that in these solvents. pseudopeptides self-assemble into elongated and very thin fibers, which in turn form a three-dimensional network that traps solvent molecules. Infrared studies showed that aggregation is accompanied by the formation of a hydrogen-bonded network between NH and CO of the hydrazinopeptides. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1887 / 1889
页数:3
相关论文
共 13 条
[1]  
[Anonymous], 1992, THERMOREVERSIBLE GEL
[2]   α-Halogenohydrazides:: useful starting material for the synthesis of hydrazinoazapeptides and azauracils [J].
Barré, C ;
Carret, S ;
Guerro, M ;
Le Grel, P ;
Baudy-Floc'h, M .
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1999, 77 (02) :263-270
[3]   The design of organic gelators: Solution and solid state properties of a family of bis-ureas [J].
Carr, AJ ;
Melendez, R ;
Geib, SJ ;
Hamilton, AD .
TETRAHEDRON LETTERS, 1998, 39 (41) :7447-7450
[4]   CYCLO(DIPEPTIDE)S AS LOW-MOLECULAR-MASS GELLING AGENTS TO HARDEN ORGANIC FLUIDS [J].
HANABUSA, K ;
MATSUMOTO, Y ;
MIKI, T ;
KOYAMA, T ;
SHIRAI, H .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (11) :1401-1402
[5]   SMALL MOLECULAR GELLING AGENTS TO HARDEN ORGANIC LIQUIDS - ALKYLAMIDE OF N-BENZYLOXYCARBONYL-L-VALYL-L-VALINE [J].
HANABUSA, K ;
TANGE, J ;
TAGUCHI, Y ;
KOYAMA, T ;
SHIRAI, H .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1993, (04) :390-392
[6]  
POSTEK MT, SCANNING ELECT MICRO
[7]   MELTING TEMPERATURE OF THERMALLY REVERSIBLE GEL .6. EFFECT OF BRANCHING ON THE SOL-GEL TRANSITION OF POLYETHYLENE GELS [J].
TAKAHASHI, A ;
SAKAI, M ;
KATO, T .
POLYMER JOURNAL, 1980, 12 (05) :335-341
[8]   Low molecular mass gelators of organic liquids and the properties of their gels [J].
Terech, P ;
Weiss, RG .
CHEMICAL REVIEWS, 1997, 97 (08) :3133-3159
[9]  
van Esch J, 1999, CHEM-EUR J, V5, P937
[10]   Self-assembly of bisurea compounds in organic solvents and on solid substrates [J].
vanEsch, J ;
DeFeyter, S ;
Kellogg, RM ;
DeSchryver, F ;
Feringa, BL .
CHEMISTRY-A EUROPEAN JOURNAL, 1997, 3 (08) :1238-1243