Article (Scientific journals)
Oligo(p-phenylenevinylene)-Peptide Conjugates: Synthesis and Self-Assembly in Solution and at the Solid-Liquid Interface
Matmour, R.; De Cat, I.; George, S.J. et al.
2008In Journal of the American Chemical Society, 130 (44), p. 14576-14583
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Abstract :
[en] Two oligo(p-phenylenevinylene)-peptide hybrid amphiphiles have been synthesized using solid- and liquid-phase strategies. The amphiliphiles are composed of a p-conjugated oligo(p-phenylenevinylene) trimer (OPV) which is coupled at either a glycinyl-alanyl-glycinyl-alanyl-glycine (GAGAG) silk-inspired ß-sheet or a glycinyl-alanyl-asparagyl-prolyl-asparagy-alanyl-alanyl-glycine (GANPNAAG) ß-turn forming oligopeptide sequence. The solid-phase strategy enables one to use longer peptides if strong acidic conditions are avoided, whereas the solution-phase coupling gives better yields. The study of the two-dimensional (2D) self-assembly of OPV-GAGAG by scanning tunneling microscopy (STM) at the submolecular level demonstrated the formation of bilayers in which the molecules are lying antiparallel in a ß-sheet conformation. In the case of OPV-GANPNAAG self-assembled monolayers could not be observed. Absorption, fluorescence, and circular dichroism studies showed that OPV-GAGAG and OPV-GANPNAAG are aggregated in a vaiety of organic solvents. In water cryogenic temperature transmission electron microscopy (cryo-TEM), atomic force microscopy (AFM), light scattering, and optical studies reveal that self-assembled nanofibers are formed in which the helical organization of the OPV segments is dictated by the peptide sequence.
Disciplines :
Chemistry
Physics
Author, co-author :
Matmour, R.
De Cat, I.
George, S.J.
Adriaens, W.
Leclère, Philippe  ;  Université de Mons > Faculté des Sciences > Chimie des matériaux nouveaux
Bomans, P.H.H.
Sommerdijk, N.A.J.M.
Gielen, J.C.
Christianen, P.C.M.
Heldens, J.T.
van Hest, J.C.M.
Lowik, D.W.P.M.
De Feyter, S.
Meijer, E.W.
Schenning, A.P.H.J.
More authors (5 more) Less
Language :
English
Title :
Oligo(p-phenylenevinylene)-Peptide Conjugates: Synthesis and Self-Assembly in Solution and at the Solid-Liquid Interface
Publication date :
05 November 2008
Journal title :
Journal of the American Chemical Society
ISSN :
0002-7863
Publisher :
American Chemical Society, United States - District of Columbia
Volume :
130
Issue :
44
Pages :
14576-14583
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S817 - Chimie des matériaux nouveaux
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Commentary :
Publié en ligne le 11 octobre 2008
Available on ORBi UMONS :
since 10 June 2010

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