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Talanta

Title:		Establishing linear solvation energy relationships between VOCs and monolayer-protected gold nanoclusters using quartz crystal microbalance
Author(s):		Li CL; Lu CJ;
Address:		"Department of Chemistry, Fu-Jen Catholic University, Hsinchuang, Taiwan, ROC"
Journal Title:		Talanta
Year:		2009
Volume:		20090520
Issue:		3
Page Number:		851 - 855
DOI:		10.1016/j.talanta.2009.05.012
ISSN/ISBN:		1873-3573 (Electronic) 0039-9140 (Linking)
Abstract:		"Linear solvation energy relationships (LSERs) have been recognized as a useful model for investigating the chemical forces behind the partition coefficients between vapor molecules and absorbents. This study is the first to determine the solvation properties of monolayer-protected gold nanoclusters (MPCs) with different surface ligands. The ratio of partition coefficients/MPC density (K/rho) of 18 volatile organic compounds (VOCs) for four different MPCs obtained through quartz crystal microbalance (QCM) experiments were used for the LSER model calculations. LSER modeling results indicate that all MPC surfaces showed a statistically significant (p<0.05) preference to hydrogen-bond acidic molecules. Through dipole-dipole attraction, 4-methoxythiophenol-capped MPCs can also interact with polar organics (s=1.04). Showing a unique preference for the hydrogen bond basicity of vapors (b=1.11), 2-benzothiazolethiol-capped MPCs provide evidence of an intra-molecular, proton-shift mechanism on surface of nano-gold"
Keywords:
Notes:		"PubMed-not-MEDLINELi, Chi-Lin Lu, Chia-Jung eng Research Support, Non-U.S. Gov't Netherlands 2009/07/07 Talanta. 2009 Aug 15; 79(3):851-5. doi: 10.1016/j.talanta.2009.05.012. Epub 2009 May 20"