Self-assembly properties of polyphenylsulphonic acids and their alkali metal salts in aqueous solutions

Potassium and sodium 5′-phenyl-1,1′:3′,1″-terphenyl-4-sulphonates (KPhTS and SPhTS) and the 2′-methyl derivatives (KMePhTS and SMePhTS) have been synthesized from the appropriate pyrylium salt. The procedure failed in the case of the corresponding lithium salts (LPhTS and LMePhTS). These were prepar...

Full description

Saved in:
Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 1998-05, Vol.136 (3), p.281-288
Main Authors: Czapkiewicz, Jan, del Castillo, Jose L., Milart, Piotr, Rodriguez, Julio R., Tutaj, Bożena
Format: Article
Language:English
Subjects:
Aggregation
Polyphenylsulphonates
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Potassium and sodium 5′-phenyl-1,1′:3′,1″-terphenyl-4-sulphonates (KPhTS and SPhTS) and the 2′-methyl derivatives (KMePhTS and SMePhTS) have been synthesized from the appropriate pyrylium salt. The procedure failed in the case of the corresponding lithium salts (LPhTS and LMePhTS). These were prepared by neutralization of the sulphonic acids. Solubilities of the alkali metal polyphenylsulphonates in water at 25°C decrease in the order Li>Na>K. Conductivity data for these salts and the acids in water indicate formation of dimers in the low concentration range preceding the operational micellization concentration. Dilute solutions of lithium polyphenylsulphonates in aqueous LiCl form anisotropic, highly viscous systems which show marked time-dependent hypochromism. Results of dynamic light scattering measurements support the view that elongated stacks of the triphenylbenzene moieties are formed in such solutions.
ISSN:0927-7757
1873-4359
DOI:10.1016/S0927-7757(97)00355-5