Journal
POLYMER
Volume 50, Issue 24, Pages 5681-5684Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2009.10.003
Keywords
Chemosensor; Proton; RAFT polymerization
Categories
Funding
- NSFC/China [50673025]
- National Basic Research 973 Program [2006CB806200]
- Scientific Committee of Shanghai
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A polymeric chemosensor (PNa) containing naphthalimide signal moiety and piperazinyl ring recognition moiety for the detection of proton was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization, which can guarantee narrow molecular weight distribution high purity, and precise polymeric structure. PNa and its corresponding monomer (Na) showed both fluorescence enhancement in low proton concentration and fluorescence suppression in high proton concentration, which can be observed by both naked eyes and optical responses. Quarternization of the alkylated amine of Na (NaI) can better support the Off-On-Off mechanism shown by PNa and Na. In addition, PNa displayed better sensitivity than Na. The effect of proton on thin PNa film was also investigated, and the addition of proton led to a decrease of the fluorescence intensity. (C) 2009 Elsevier Ltd. All rights reserved.
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