title: An Electrostatically Self-Assembled Thin Film Made of Zn-Substituted Tungstoborate and Rhodamine B with Photoelectrochemical Properties.
abstract: An electrostatically self-assembled multilayer thin film consisting of alternating layers of Keggin polyoxometalate of Zn-substituted tungstoborate (BW11Zn) and Rhodamine B (RhB) has successfully been prepared on a quartz and indium-tin oxide (ITO) glass substrate. The ultraviolet-visible (UV-vis) absorption spectra demonstrated that the electrostatically self-assembled film of (BW11Zn/RhB)n was uniformly deposited layer by layer, and the RhB molecules in the film formed the J-aggregation. The photoelectrochemical investigations showed that the films generated stable cathodic photocurrents that originated from RhB, and the maximal cathodic photocurrent density generated by an eight-layer film was 4.9 µA/cm2 while the film was irradiated with 100 mW/cm2 polychromatic light of 730 nm > λ > 325 nm at an applied potential of 0 V versus a saturated calomel electrode.
authors.forename: Xu
authors.initials: X
authors.lastname: Mao
authors.forename: Jia-Ning
authors.initials: JN
authors.lastname: Zhang
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Gao
authors.forename: Yu
authors.initials: Y
authors.lastname: Su
authors.forename: Peng-Xia
authors.initials: PX
authors.lastname: Chen
authors.forename: Ke-Zhi
authors.initials: KZ
authors.lastname: Wang
mesh_terms: D001881:Borates / Q000737:chemistry* / Q000528:radiation effects; D004553:Electric Conductivity; D011211:Electric Power Supplies; D004566:Electrodes; D004595:Electroplating / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008422:Materials Testing; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D012235:Rhodamines / Q000737:chemistry* / Q000528:radiation effects; D055672:Static Electricity; D017973:Tungsten Compounds / Q000737:chemistry* / Q000528:radiation effects; D015032:Zinc / Q000737:chemistry / Q000528:radiation effects
chemical_list: D001881:Borates; D008567:Membranes, Artificial; D012235:Rhodamines; D017973:Tungsten Compounds; C067587:12-tungstoborate; D015032:Zinc; C029773:rhodamine B