title: Surface-enhanced photochromic phenomena of phenylalanine adsorbed on tungsten oxide nanoparticles: a novel approach for "label-free" colorimetric sensing.
abstract: The enhanced photochromic behaviors of the L-phenylalanine (Phe)-tungsten(VI) oxide (WO3) colloid binary aqueous solution have been investigated by means of UV-vis absorption spectrometry. The phenomena provided a potential use of the WO3 nanoparticles as a colorimetric probe for sensitive "label-free" detection of Phe.
authors: Department of Environmental Science & Engineering, Graduate School of Science & Engineering, Yamaguchi University, Yamaguchi, 753-8512, Japan.
authors: Shohei
authors: S
authors: Tanaka
authors: Kenta
authors: K
authors: Adachi
authors: Suzuko
authors: S
authors: Yamazaki
mesh_terms: D000327:Adsorption; D003124:Colorimetry / Q000379:methods*; D057230:Limit of Detection; D053758:Nanoparticles / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010649:Phenylalanine / Q000032:analysis* / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013499:Surface Properties; D014414:Tungsten / Q000737:chemistry*
chemical_list: D010087:Oxides; D010649:Phenylalanine; C511604:tungsten oxide; D014414:Tungsten