Molecularly imprinted surface acoustic wave sensors: The synergy of electrochemical and gravimetric transductions in chemical recognition processes
作者： Youssef Lattach , Najla Fourati , Chouki Zerrouki , Jean-Marie Fougnion , Francis Garnier
DOI: 10.1016/J.ELECTACTA.2011.11.119
关键词:
摘要: a b s t r c Chemical sensor based on molecularly imprinted conducting polymers (MICP) is described. Polythio- phenes - acetic acid thiophene MICP films with different thicknesses have been electrosynthesized over the sensing area of an original electrochemical surface acoustic wave (ESAW). To investigate properties developed sensor, and gravimetric combined transductions applied to atrazine (ATZ) detection. Films poly(3,4-ethylenedioxythiophene) noted PEDOT as well non (NICP), were also prepared, in order lead compar- ative study. The structure all was investigated by IR spectroscopy (ATR-FTIR) atomic force microscopy (AFM). growth their doping/undoping processes simultane- ous gravimetric/electrochemical transduction. Real time measurements highlighted difference between two electrosynthesis kinetics. NICP grow linearly time, whereas film thickness presents limit value 1 m implied conditions. Considering ESAW response towards charge "transfer", linear relationship phase variations charges density found for film, sensitivity about 470 ◦ C−1 cm2. same can be
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