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4152569 
Journal Article 
The effects of ring substituents in aniline on the reactivity of PANI with hydrogen tetrachloroaurate and the dispersion of gold nanoparticles 
Kabomo, TM; Scurrell, MS 
2016 
1 
Polymers for Advanced Technologies
ISSN: 1042-7147 
27 
6 
759-764 
WOS:000375472300008 
As expected from theoretical predictions, the polymerization of aniline was affected by the substituent group on the benzene ring. The rate of the polymerization varied as poly(2-chloroaniline) (PANICl) << poly(2-methylaniline) (PANIMe) < polyaniline (PANI). While the rate of polymerization was determined largely by electronic effects of the substituent groups, the reactivity of the polymers was determined by the steric effects. The order of the rate of reaction of the polymers with AuCl4- was PANIMe < PANICl << PANI. The amount of Au incorporated into the polymer matrix followed a similar trend. However, the size of the gold nanoparticles did not differ greatly. Gold nanoparticles dispersed on PANICl and PANIMe were more stable in acidic media than those on PANI. Copyright (C) 2015 John Wiley & Sons, Ltd. 
Au@PANI; gold nanoparticles; polyaniline; substituted aniline; polymerization