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Noncovalent Macromolecular Architectures of Oligo( p ‐phenylenevinylene)s (OPVs): Role of End Functional Groups on the Gelation of Organic Solvents
Author(s) -
Babu Sukumaran S.,
Praveen Vakayil K.,
Ajayaghosh Ayyappanpillai
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200851304
Subject(s) - dichloromethane , macromolecule , polymer chemistry , morphology (biology) , chemistry , end group , functional group , non covalent interactions , materials science , polymer , organic chemistry , chemical engineering , copolymer , molecule , solvent , hydrogen bond , biochemistry , biology , engineering , genetics
Summary: Self‐assembly of a few OPV derivatives having different end functional groups to aggregates, fibrous networks and organogels are discussed. OPV1 and OPV2 functionalized with ester moieties form gels in nonpolar hydrocarbon solvents whereas OPV3 with carboxylic acid groups form gel from THF and dichloromethane. OPV4 with dicyano moieties form aggregates but could not gelate solvents. AFM and TEM studies revealed considerable difference in the morphology of the self‐assembled structures of OPV1‐4 . From the optical, morphological and gelation data it is concluded that the nature of the end functional groups strongly influences upon the self‐assembly and gelation properties of OPVs.