title: Anodic, cathodic, and annihilation electrochemiluminescence emissions from hydrophilic conjugated polymer dots in aqueous medium.
abstract: Hydrophilic poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) conjugated polymer dots (CP-dots) capped by Triton X-100 were synthesized. For the first time, the electrochemiluminescence (ECL) emission of CP-dots was investigated in aqueous solution. At the glassy carbon/water interface, the CP-dots have excellent and multichannel ECL properties, such as having annihilation ECL activity in the absence of coreactants, and give bright anodic and cathodic ECL emission (590 nm) in the presence of tri-n-propylamine (TPrA) and peroxydisulfate (S2O8(2-)), respectively. The versatile ECL properties of the hydrophilic CP-dots combined with their low cytotoxicity, good biocompatibility, and easy bioconjugation may suggest promising applications of this new type of ECL nanomaterial in novel biosensing and bioimaging, and new types of light-emitting devices.
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, and College of Chemistry, Fuzhou University, Fujian 350108, China.
authors.forename: Ruiping
authors.initials: R
authors.lastname: Dai
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, and College of Chemistry, Fuzhou University, Fujian 350108, China.
authors.forename: Fanmin
authors.initials: F
authors.lastname: Wu
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, and College of Chemistry, Fuzhou University, Fujian 350108, China.
authors.forename: Huifeng
authors.initials: H
authors.lastname: Xu
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, and College of Chemistry, Fuzhou University, Fujian 350108, China.
authors.forename: Yuwu
authors.initials: Y
authors.lastname: Chi
mesh_terms: D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004566:Electrodes; D057927:Hydrophobic and Hydrophilic Interactions; D049449:Luminescence; D008163:Luminescent Measurements / Q000295:instrumentation* / Q000379:methods; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D011108:Polymers
keywords: CP-dots; Triton X-100; annihilation; coreactant; electrochemiluminescence