A novel conjugated polymer, poly（1）, containing thiourea moieties in main chain is synthesized via Suzuki coupling reaction. The addition of cuprous ion quenches the fluorescence of poly（1）, whereas the fluorescen...A novel conjugated polymer, poly（1）, containing thiourea moieties in main chain is synthesized via Suzuki coupling reaction. The addition of cuprous ion quenches the fluorescence of poly（1）, whereas the fluorescence changes slightly upon addition of other metal ions, exhibiting the fluorescent almost turn-off sensing ability towards Cu~＋. When hydrogen peroxide was added to the solution containing poly（1） and Cu~＋, Cu~＋ was oxidized into Cu^（2＋）, resulting in the fluorescence recovery. The H_2O_2 released from glucose oxidation by glucose oxidase（GOD） also recovered the fluorescence of poly（1）/Cu~＋ solution. The results indicated that the poly（1）/Cu~＋ solution could serve as a sensing platform for hydrogen peroxide and glucose.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.21074037 and 51173050)Natural Science Foundation of Guangdong+1 种基金China(No.2015A03031)Special Project on the Integration of Industry,Education and Research of Guangdong Province(Nos.2014B090903010,2012A090300004 and 2015B090925006)
文摘A novel conjugated polymer, poly（1）, containing thiourea moieties in main chain is synthesized via Suzuki coupling reaction. The addition of cuprous ion quenches the fluorescence of poly（1）, whereas the fluorescence changes slightly upon addition of other metal ions, exhibiting the fluorescent almost turn-off sensing ability towards Cu~＋. When hydrogen peroxide was added to the solution containing poly（1） and Cu~＋, Cu~＋ was oxidized into Cu^（2＋）, resulting in the fluorescence recovery. The H_2O_2 released from glucose oxidation by glucose oxidase（GOD） also recovered the fluorescence of poly（1）/Cu~＋ solution. The results indicated that the poly（1）/Cu~＋ solution could serve as a sensing platform for hydrogen peroxide and glucose.
