Department of Chemistry
Dual-emissive Langmuir–Blodgett films of a 9,9-bis(4-ethynylphenyl)fluorene derivative of gold(I) and some europium-substituted polyoxometalates: preparation, characterization and photoelectric properties
A new family of organometallic/inorganic composite Langmuir-Blodgett (LB) films consisting of the rigid-rod dinuclear gold(I) complex coordinated with 9,9-bis(4-ethynylphenyl)fluorene (denoted as Au-DPF) as the π-conjugated organometallic molecule coupled with some europium-substituted polyoxometalates (POM; POM = Na 9EuW 10O 36, K 13[Eu(SiW 11O 39) 2] and K 5[Eu(SiW 11O 39)(H 2O) 2]) as the inorganic component were prepared and characterized by π-A isotherms, UV-vis absorption and photoluminescence spectra, atomic force microscopy imaging, scanning tunneling microscopy, and surface photo-voltage spectroscopy. Luminescence spectra of the prepared hybrid LB films show that the near-white emission spectra can be obtained due to the dual-emissive nature of the mixed Au-DPF/POM blends, and POM can facilitate broad aggregate emission bands. These Au-diyne-based LB films displayed interesting electric conductivity behavior. Among them, Au-DPF/K 13[Eu(SiW 11O 39) 2] 13-layer film showed a good electrical response, with the tunneling current up to ±100 nA when the voltage was monitored between -1. 3 and 1. 8 V. The photovoltage response of Au-DPF/EuW 22 amounts to 1. 5 μV. © 2011 Springer Science+Business Media, LLC.
Gold acetylide, LB Film, Photoelectric property, Polyoxometalate, Preparation
Source Publication Title
Journal of Inorganic and Organometallic Polymers and Materials
Link to Publisher's Edition
Fu, Q., Fu, H., Hu, L., Liu, L., Liu, S., Du, Z., & Wong, W. (2012). Dual-emissive Langmuir–Blodgett films of a 9,9-bis(4-ethynylphenyl)fluorene derivative of gold(I) and some europium-substituted polyoxometalates: preparation, characterization and photoelectric properties. Journal of Inorganic and Organometallic Polymers and Materials, 22 (1), 97-104. https://doi.org/10.1007/s10904-011-9579-2