Premium
Liposomes by Polymerization of an Imidazolium Ionic Liquid: Use as Microreactors for Gold‐Catalyzed Alcohol Oxidation
Author(s) -
Buaki Mireia,
Aprile Carmela,
Dhakshinamoorthy Amarajothi,
Alvaro Mercedes,
Garcia Hermenegildo
Publication year - 2009
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200902395
Subject(s) - ionic liquid , potassium persulfate , polymerization , monomer , materials science , polymer , photopolymer , liposome , chemical engineering , nanoparticle , polymer chemistry , colloidal gold , persulfate , chemistry , catalysis , organic chemistry , nanotechnology , composite material , engineering
The bipodal ionic liquid N , N ′‐bis(10‐undecenyl)‐2‐methylimidazolium underwent polymerization in aqueous media with potassium persulfate to form submicrometric liposomes. A TEM study indicated that the liposomes are the result of several morphological transformations of the polymer particles. Photopolymerization at room temperature led to spherical particles with some internal voids and polymer chains. We took advantage of the positive charge on the imidazolium rings and used a photocuring agent to form in a single step starting from the imidazolium monomer and NaAuCl 4 spherical polymer particles containing gold nanoparticles (10–15 nm) in their interior. This system was found to promote the selective aerobic oxidation of 2‐hydroxybenzyl alcohol to salicylaldehyde.