TY - JOUR
T1 - Organometallic gold(I) acetylide/polyoxometalate hybrid langmuir-blodgett films: Preparation, characterization, and photoelectric properties
AU - Liu, Li
AU - Liu, Qian
AU - Chen, Ming
AU - Li, Ming Jian
AU - Xu, Li Ping
AU - Liu, Shi Zhong
AU - Du, Zu Liang
AU - Wong, Wai Yeung
PY - 2010/2/23
Y1 - 2010/2/23
N2 - A new series of organometallic/inorganic hybrid Langmuir-Blodgett (LB) films containing an organometallic gold(i) aryleneethynylene metal complex (OMA) as the π-conjugated organometallic molecule and a polyoxometalate (POM, POM = H3BW12O40, H6As2W18O62, or H6P2Mo18O62) of the Keggin and Dawson structure as the inorganic composite, were prepared and characterized by A isotherms, UV-vis absorption spectra, photoluminescence spectra, atomic force microscopy imaging, scanning tunnelling microscopy, and surface photovoltage spectroscopy. Our experimental results indicate that stable, well defined and well organized Langmuir and LB films are formed in pure water and polyoxometalate subphases. There is a quenching effect in the luminescence of the gold(i) complex when it is made into the LB films. The OMA/POM hybrid LB films display strong photovoltage effect in the UV-vis region. The photovoltage response of OMA/H6As2W18O62can be as high as 3338 μV. OMA/POM monolayer films show good electrical conductivity, and the tunnelling current for a OMA/H3BW12O40monolayer film amounts to 50 to approximately -100 nA when the voltage is set at ±9 V.
AB - A new series of organometallic/inorganic hybrid Langmuir-Blodgett (LB) films containing an organometallic gold(i) aryleneethynylene metal complex (OMA) as the π-conjugated organometallic molecule and a polyoxometalate (POM, POM = H3BW12O40, H6As2W18O62, or H6P2Mo18O62) of the Keggin and Dawson structure as the inorganic composite, were prepared and characterized by A isotherms, UV-vis absorption spectra, photoluminescence spectra, atomic force microscopy imaging, scanning tunnelling microscopy, and surface photovoltage spectroscopy. Our experimental results indicate that stable, well defined and well organized Langmuir and LB films are formed in pure water and polyoxometalate subphases. There is a quenching effect in the luminescence of the gold(i) complex when it is made into the LB films. The OMA/POM hybrid LB films display strong photovoltage effect in the UV-vis region. The photovoltage response of OMA/H6As2W18O62can be as high as 3338 μV. OMA/POM monolayer films show good electrical conductivity, and the tunnelling current for a OMA/H3BW12O40monolayer film amounts to 50 to approximately -100 nA when the voltage is set at ±9 V.
UR - http://www.scopus.com/inward/record.url?scp=76849117700&partnerID=8YFLogxK
U2 - 10.1071/CH09198
DO - 10.1071/CH09198
M3 - Journal article
SN - 0004-9425
VL - 63
SP - 103
EP - 108
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
IS - 1
ER -