Journal
SOLID STATE COMMUNICATIONS
Volume 130, Issue 6, Pages 367-372Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2004.02.033
Keywords
morin; porous alumina; trypsin; photoluminescence
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For the first time. the photoluminescence (PL) spectra of anodic porous alumina (P-Al) films impregnated with essentially non-fluorescent morin and morin-trypsin (Try) were investigated and compared with those of liquid solutions. It was found that their PL positions are similar to that of dye-Al3+ in ethanol solution, and the PL intensity of embedded dye-Try is Much higher than that of embedded dye alone. We infer that the appearance of the PL hand detected here is due to the formation of morin-Al complex in the holes of P-Al with the inner wall involved, and a likely luminescent mechanism is proposed to elucidate the PL enhancement phenomena due to the coexistence of morin and Try in the P-Al pores, which is confirmed by UV and FTIR measurements. Moreover. it is also found that the PL intensity increases with the pore size. (C) 2004 Elsevier Ltd. All rights reserved.
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