Premium
Fabrication of Fe(CN) 6 3− Functionalized PDDA/CdTe Layer‐by‐layer Film with Good Electron Transfer Ability
Author(s) -
Luan Qingfen,
Li Jun,
Yao Xin
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200904603
Subject(s) - layer by layer , cyclic voltammetry , cadmium telluride photovoltaics , materials science , dielectric spectroscopy , electrochemistry , electron transfer , layer (electronics) , analytical chemistry (journal) , metal , electrode , ion , inorganic chemistry , nanotechnology , chemistry , organic chemistry , metallurgy
(PDDA/CdTe) n layer‐by‐layer (LBL) film immobilized with Fe(CN) 6 3− was fabricated on the gold electrode. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to investigate the electrochemical properties of this film. The peak current of the immobilized Fe(CN) 6 3− increased as the number of the bilayers increased and was proportional to the scan rate. Compared with pure (PDDA/CdTe) n and (PDDA/PSS) n LBL film, Fe(CN) 6 3− immobilized (PDDA/CdTe) n LBL film had good electron transfer ability. The immobility of Fe(CN) 6 3− into the film was attributed to its interaction with Cd 2+ on the surface of CdTe QDs. Fe(CN) 6 3− also can interact with other metal ions, which would make Fe(CN) 6 3− release from the film. The concentrations of metal ions will affect the CV response of Fe(CN) 6 3− immobilized LBL film. It has provided a novel prototype of device or sensor for quantitative detection of metal ions.