Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8334
Title: Synthesis and characterization of photo- and pH-responsive nanoparticles containing amino-substituted azobenzene
Authors: Tang, Q
Meng, X
Jiang, H
Zhou, T
Gong, C
Fu, X
Shi, S 
Issue Date: 2010
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry, 2010, v. 20, no. 41, p. 9133-9139 How to cite?
Journal: Journal of materials chemistry 
Abstract: A novel dual responsive nanomaterial sensitive to both photo- and pH stimuli has been successfully developed. The polymer-based nanoparticles were fabricated from a specially designed photo- and pH-responsive amino-substituted azobenzene monomer, 4-amino-4′-methacrylatylazobenzene (AMAAB), via free radical polymerization with trimethylolpropane trimethacrylate (TRIM) cross-linkers. The trans-cis photoisomerization properties of AMAAB were retained after incorporation into the rigid three-dimensional cross-linked polymer matrix. The TRIM/AMAAB molar ratio significantly influenced the kinetics of the trans-cis photoisomerization. The nanoparticles also possessed good pH-responsive properties. The change in absorbance with media pH was monitored at 402 nm, and a "titration type" curve was obtained with a pK a value of 0.61 ± 0.06. At this transition point, the color of the nanoparticle suspension changed colour from yellow to pink. Thermogravimetric analysis (TGA) indicated that the nanoparticles were thermally stable.
URI: http://hdl.handle.net/10397/8334
ISSN: 0959-9428
EISSN: 1364-5501
DOI: 10.1039/c0jm01235a
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

26
Last Week
0
Last month
1
Citations as of Jul 31, 2017

WEB OF SCIENCETM
Citations

25
Last Week
1
Last month
0
Citations as of Aug 21, 2017

Page view(s)

36
Last Week
1
Last month
Checked on Aug 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.