ชื่อเรื่อง | : | Electrofluorochromic detection of cyanide anion using a nanoporous polymer electrode and the detection mechanism |
นักวิจัย | : | Ding, Guoqiang , Lin, TingTing , Zhou, Rui , Dong, Yuliang , Xu, Jianwei , Lu, Xuehong |
คำค้น | : | DRNTU::Science::Chemistry |
หน่วยงาน | : | Nanyang Technological University, Singapore |
ผู้ร่วมงาน | : | - |
ปีพิมพ์ | : | 2557 |
อ้างอิง | : | Ding, G., Lin, T., Zhou, R., Dong, Y., Xu, J., & Lu, X. (2014). Electrofluorochromic detection of cyanide anion using a nanoporous polymer electrode and the detection mechanism. Chemistry - a European journal, in press. , 0947-6539 , http://hdl.handle.net/10220/20685 , http://dx.doi.org/10.1002/chem.201403133 |
ที่มา | : | - |
ความเชี่ยวชาญ | : | - |
ความสัมพันธ์ | : | Chemistry - a European journal |
ขอบเขตของเนื้อหา | : | - |
บทคัดย่อ/คำอธิบาย | : | An electrofluorochromic (EFC) conjugated copolymer (PEFC) containing carbazole and benzothiadiazole (BTD) moieties is synthesized through Suzuki coupling followed by electrochemical polymerization, resulting in a nanoporous EFC polymer electrode. The electrode exhibits high sensitivity and selectivity in the EFC detection of cyanide anions (CN−) in largely aqueous electrolyte (67 vol % water) because electrochemical oxidation of PEFC leads to significant fluorescence quenching, and the presence of different concentrations (1 to 100 μm) of CN− in the electrolyte can weaken the oxidative quenching to substantially different extents. Although PEFC is hydrophobic in the neutral state, it is converted to radical cation/dication states upon oxidation, rendering the PEFC some hydrophilicity. Moreover, its nanoporous morphology provides a large surface area and short diffusion distance, facilitating the movement of CN− in the electrolyte into the PEFC film to interact with receptors. Density functional theory calculations show that the noncovalent interaction between electron-deficient BTD and nucleophilic CN− is energy favorable in the oxidized states in both aqueous and organic media, suggesting that the specific π−–π+ interaction plays the main role in the CN− detection. |
บรรณานุกรม | : |
Ding, Guoqiang , Lin, TingTing , Zhou, Rui , Dong, Yuliang , Xu, Jianwei , Lu, Xuehong . (2557). Electrofluorochromic detection of cyanide anion using a nanoporous polymer electrode and the detection mechanism.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Ding, Guoqiang , Lin, TingTing , Zhou, Rui , Dong, Yuliang , Xu, Jianwei , Lu, Xuehong . 2557. "Electrofluorochromic detection of cyanide anion using a nanoporous polymer electrode and the detection mechanism".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Ding, Guoqiang , Lin, TingTing , Zhou, Rui , Dong, Yuliang , Xu, Jianwei , Lu, Xuehong . "Electrofluorochromic detection of cyanide anion using a nanoporous polymer electrode and the detection mechanism."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print. Ding, Guoqiang , Lin, TingTing , Zhou, Rui , Dong, Yuliang , Xu, Jianwei , Lu, Xuehong . Electrofluorochromic detection of cyanide anion using a nanoporous polymer electrode and the detection mechanism. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.
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