Premium
One‐Step Preparation of Electrospun Microfibrous Polystyrene Mats Having Surface Enriched in p‐tert ‐Butylcalix[4]arene Fitted with Phosphinoyl Pendant Arms
Author(s) -
Ignatova Milena,
Manolova Nevena,
Lachkova Victoria,
Varbanov Sabi,
Rashkov Iliya
Publication year - 2008
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200800438
Subject(s) - polystyrene , electrospinning , microfiber , x ray photoelectron spectroscopy , materials science , polymer chemistry , layer (electronics) , calixarene , synthetic fiber , chemical engineering , composite material , fiber , chemistry , polymer , molecule , organic chemistry , engineering
Polystyrene microfibers containing lower‐rim substituted calix[4]arene with phosphinoyl pendant arms were easily prepared in one‐step procedure by electrospinning. A specific feature of the fibers is the difference in their functionality at the surface and in the bulk. The graded structure of the fibers was shown by XPS analyses. The calix[4]arene concentration in the 3–5 nm surface layer was 50% higher than the theoretically calculated if calix[4]arene was uniformly distributed in the fibers. A six‐coordinated complex was formed between the calix[4]arene included in the fibers and Ni 2+ ions. The distribution of phosphorus along the fibers is uniform, as evidenced by X‐ray mapping.