Premium
Surface and Self‐Aggregation Properties of Bis‐Benzimidazolones Derivatives of d ‐Glucose
Author(s) -
Lakhrissi Brahim,
Lakhrissi Loubna,
Massoui Mohamed,
Essassi El Mokhtar,
Comelles Francesc,
Esquena Jordi,
Solans Conxita,
RodríguezAbreu Carlos
Publication year - 2010
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-010-1183-x
Subject(s) - chemistry , alkyl , critical micelle concentration , lyotropic , micelle , pulmonary surfactant , surface tension , amphiphile , fluorescence , aggregation number , small angle x ray scattering , fluorescence spectroscopy , swelling , molecule , crystallography , chemical engineering , polymer chemistry , organic chemistry , polymer , scattering , copolymer , aqueous solution , liquid crystalline , biochemistry , physics , optics , quantum mechanics , engineering
The surface and self‐aggregation properties in water of a new series of amphiphilic homologues, bis‐benzimidazolone derivatives of d ‐glucose, were investigated. Parameters such as the maximal surface excess concentration, minimal area per molecule at the interface, and critical micelle concentration (CMC) were found to be significantly dependent on the hydrophobic alkyl chain length. The synthesized compounds form micelles at remarkably low concentrations, and CMCs derived from surface tension measurements show a minimum as a function of the alkyl chain length; this unusual trend can be attributed to the formation of submicellar aggregates in compounds with long alkyl chains, as evidenced from fluorescence probe spectroscopy data. At high surfactant concentrations, lyotropic liquid crystalline phases with hexagonal structure are formed. Small angle X‐ray scattering measurements indicate that the characteristic nanoscopic lengths increase with water swelling and alkyl chain length.