期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 3, 页码 1747-1751出版社
AMER CHEMICAL SOC
DOI: 10.1021/am201858u
关键词
self-assembly; fluorescence; metal-enhanced fluorescence; stimuli-responsive; nanoparticles
资金
- National Natural Science Foundation of China [20904003, 90923015, 21104004]
- Ministry of Education of China [20110006120001]
- Fundamental Research Funds for the Central Universities of China.
In this paper, a novel core-shell hybrid nanoparticle with a silver core and cross-linked poly(3-acrylamidephenylboronic acid-co-acrylic acid) shell (Ag@ PAPBA-PAA) was reported. The prepared hybrid nanoparticles can exhibit good responsiveness to the glucose concentration and pH of the environment and exhibit a responsive swelling and shrinking behavior. Tuned by the glucose concentration or pH, a swelling of up to 15.0 nm thickness of the hybrid nanoparticle shell can be observed. These unique responsive properties can be employed to tune the metal-enhanced fluorescence (MEF) effects of the incorporated Ag cores. The fluorescence of adsorbed positively charged porphyrin molecules (Por(4+)) shows good sensitivity to the glucose concentration and with an enhancement of up to about 1.8-fold. These functional hybrid nanoparticles with tunable MEF effects show a great potential application in the fields of responsive fluorescent sensing and detection.
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