화학공학소재연구정보센터
Biochemical and Biophysical Research Communications, Vol.305, No.1, 116-121, 2003
Fabrication and photoelectric response of poly(allylamine hydrochloride)/PM thin films by layer-by-layer deposition technique
Thin films of poly(allylamine hydrochloride) (PAH) and bacteriorbodopsin (bR) embedded in purple membrane (PM) have been prepared by layer-by-layer (LBL) self-assembly technique. The results obtained by UV-Vis spectroscopy and atomic force microscopy (AFM) analysis showed that the biological activity of bR was preserved and PM fragments could be well oriented onto the ITO substrate. A photo-electrochemical cell with the structure of ITO/(PAH/PM)(n)/electrolyte (0.5 M KCl)/Pt was fabricated and studied. The photocurrent peaks of (PAH/PM)(6) corresponding to light-on and light-off were about 200 and 100nA/cm(2), respectively, with the former enhanced 30% higher than that of the reference films made of (PDAC/PM)(6). (C) 2003 Elsevier Science (USA). All rights reserved.