Hung-Ting Chen
Iowa State University
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Featured researches published by Hung-Ting Chen.
Journal of the American Chemical Society | 2010
Kanmi Mao; Takeshi Kobayashi; Jerzy W. Wiench; Hung-Ting Chen; Chih-Hsiang Tsai; Victor S.-Y. Lin; Marek Pruski
The conformations of (pentafluorophenyl)propyl groups (-CH(2)-CH(2)-CH(2)-C(6)F(5), abbreviated as PFP), covalently bound to the surface of mesoporous silica nanoparticles (MSNs), were determined by solid-state NMR spectroscopy and further refined by theoretical modeling. Two types of PFP groups were described, including molecules in the prone position with the perfluorinated aromatic rings located above the siloxane bridges (PFP-p) and the PFP groups denoted as upright (PFP-u), whose aromatic rings do not interact with the silica surface. Two-dimensional (2D) (13)C-(1)H, (13)C-(19)F and (19)F-(29)Si heteronuclear correlation (HETCOR) spectra were obtained with high sensitivity on natural abundance samples using fast magic angle spinning (MAS), indirect detection of low-gamma nuclei and signal enhancement by Carr-Purcell-Meiboom-Gill (CPMG) spin-echo sequence. 2D double-quantum (DQ) (19)F MAS NMR spectra and spin-echo measurements provided additional information about the structure and mobility of the pentafluorophenyl rings. Optimization of the PFP geometry, as well as calculations of the interaction energies and (19)F chemical shifts, proved very useful in refining the structural features of PFP-p and PFP-u functional groups on the silica surface. The prospects of using the PFP-functionalized surface to modify its properties (e.g., the interaction with solvents, especially water) and design new types of the heterogeneous catalytic system are discussed.
Accounts of Chemical Research | 2007
Brian G. Trewyn; Igor I. Slowing; Supratim Giri; Hung-Ting Chen; Victor S.-Y. Lin
Angewandte Chemie | 2005
Seong Huh; Hung-Ting Chen; Jerzy W. Wiench; Marek Pruski; Victor S.-Y. Lin
Journal of the American Chemical Society | 2004
Seong Huh; Hung-Ting Chen; Jerzy W. Wiench; Marek Pruski; Victor S.-Y. Lin
Journal of the American Chemical Society | 2005
Hung-Ting Chen; Seong Huh; Jerzy W. Wiench; Marek Pruski; Victor S.-Y. Lin
Topics in Catalysis | 2010
Hung-Ting Chen; Brian G. Trewyn; Jerzy W. Wiench; Marek Pruski; Victor S.-Y. Lin
ACS Catalysis | 2011
Chih-Hsiang Tsai; Hung-Ting Chen; Stacey M. Althaus; Kanmi Mao; Takeshi Kobayashi; Marek Pruski; Victor S.-Y. Lin
ACS Catalysis | 2011
Da-Jiang Liu; Jing Wang; David M. Ackerman; Igor I. Slowing; Marek Pruski; Hung-Ting Chen; Victor S.-Y. Lin; James W. Evans
Archive | 2006
Hung-Ting Chen; Seong Huh; Victor S.-Y. Lin
Recoverable and Recyclable Catalysts | 2009
Brian G. Trewyn; Hung-Ting Chen; Victor S.-Y. Lin