Journal
POLYMER CHEMISTRY
Volume 5, Issue 7, Pages 2352-2362Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3py01564e
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Funding
- National Science Foundation of China [21274118, 91227120, 20923004]
- Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-13-0506]
- Program for New Century Excellent Talents in Fujian Province University
- Fundamental Research Funds for the Central Universities [2012121016]
- National Fund for Fostering Talents of Basic Science [J1310024]
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We develop a class of polymer-inorganic hybrid microgels, comprising Ag nanoparticle cores covered by a poly(3-acrylamidophenylboronic acid-co-2-(dimethylamino) ethyl acrylate) [p(3-VAPBA-co-DMAEA)] gel shell, to demonstrate that the volume phase transition behaviour of poly(phenylboronic acid) gels can be tailored from exhibiting monotonous swelling to monotonous shrinking upon adding glucose at a physiological pH of 7.4, via varying the feeding ratio of monomers DMAEA (introducing positive charges by ionization) to 3-VAPBA (introducing negative charges through the formation of a glucose-boronate complex) in the synthesis. The counterbalance of the positive and negative charges at particular glucose concentrations is a key parameter to enable this tailoring. Accompanied by this tailoring, the photoluminescence of the hybrid microgels is tuned from glucose-responsive turn-off to turn-on, in which the latter displays an improved glucose-sensing performance in both artificial tear fluid (a model for low glucose concentrations) and urine (for high glucose concentrations).
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