Fabrication of self-assembled ultrathin photochromic films containing mixed-addenda polyoxometalates H{sub 5}[PMo{sub 10}V{sub 2}O{sub 40}] and 1,10-decanediamine

Journal Article · Wed Apr 15 04:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.01.014· OSTI ID:21370366

Zhongliang, Wang ^[1]; Ruili, Zhang; Da, Xu ^[1]; Hongbing, Fu ^[1]

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1. Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

A layered phosphovanadomolybdate/1,10-decanediamine (1,10-DAD) self-assembled ultrathin film was fabricated by means of alternating adsorption of mixed-addenda polyoxometalates (POMs) (phosphovanadomolybdate, H{sub 5}[PMo{sub 10}V{sub 2}O{sub 40}]) and 1,10-DAD, and its photochromic properties were investigated. It is found that the self-assembled multilayer (SAM) film shows high-photochromic response, excellent photochromic stability and reversibility. The photochromic behavior of the SAM is closely related to the reduction potentials of addenda atoms in mixed-addenda POMs. In the case of photo-reduced mixed-addenda POMs, the electron is localized on the more reducible atom, and the addenda atoms with higher reduction potentials show prior photochromism compared with those with lower reduction potentials. The coloration speed is improved after introduction of V into molybdenum POM. The well-ordered lamellar structure of the film was well maintained during the coloration. - Graphical abstract: An ordered H{sub 5}[PMo{sub 10}V{sub 2}O{sub 40}]/1,10-decanediamine ultrathin film was fabricated by a self-assembled technique. The hybrid film displays good photochromism closely related to the reduction potentials of addenda atoms.

• OSTI ID: 21370366
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 182; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ADSORPTION
CHEMICAL REACTIONS
COLORATION
FABRICATION
FILMS
LAYERS
MOLYBDATES
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
REDUCTION
REFRACTORY METAL COMPOUNDS
SORPTION
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS