研究领域

Physical Chemistry

Our laboratory studies supramolecular assemblies at interfaces and the research lies in both of organic and physical chemistry areas. Nature uses supramolecular chemistry to carry out most operations essential to life, such as membrane transport, photosynthesis and respiration, to name a few. Our research group investigates a supramolecular approach to developing complex, functional surface structures reminiscent of biological photosynthesis that can be integrated into conventional circuit design methods. The long-term goal of these studies is to build photovoltaic devices that efficiently convert light energy to electrical energy. Our lab synthesizes a variety of porphyrin and quinone derivatives that self-assemble into discrete dimeric, trimeric or oligomeric structures using strong, multi-contact H-bonds. Using complementary H-bonding units that are tethered to electrodes the electrochemical and photochemical properties of the supramolecular surface structures are investigated. A concurrent research theme is the study of the lipid bilayer membrane and its role in organizing the supramolecular assemblies on electrode surfaces. The membrane research involves the synthesis of a library of lipids and their associated supramolecular properties investigated using supported lipid bilayers to probe the charge-transfer properties of H-bonded redox- and photo-active functional units as artificial photosynthesis candidates. Fundamentally, the chromophore surface orientation, position and charge transport properties are interrogated using photo- and electro-chemical techniques, such as surface UV-vis, surface IR, surface plasmon resonance and impedance spectroscopy.

近期论文

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R. P. Jimenez and T. C. Sutherland, Synthetic Communications, Convenient Synthesis of a Tetrathienyl Dendritic Core, 2008, 38, 4007-4012. Link S. K. Dey, Y. T. Long, S. Chowdhury, T. C. Sutherland, H. S. Mandal and H. B. Kraatz, Langmuir, Study of electron transfer in ferrocene-labeled collagen-like peptides, 2007, 23, 6475. F. E. Appoh, T. C. Sutherland and H. B. Kraatz, Journal of Organometallic Chemistry, Ferrocenoyl-amino acids: redox response towards di- and trivalent metal ions, 2005, 690, 1209-1217. X. H. Li, Y. L. Zhou, T. C. Sutherland, B. Baker, J. S. Lee and H. B. Kraatz, Analytical Chemistry, Chip-based Microelectrodes for detection of single-nucleotide mismatch, 2005, 77, 5766-5769. F. E. Appoh, T. C. Sutherland and H. B. Kraatz, Journal of Organometallic Chemistry, Changes in the hydrogen bonding pattern in ferrocene peptides, 2004, 689, 4669-4677. I. Bediako-Amoa, T. C. Sutherland, C. Z. Li, R. Silerova and H. B. Kraatz, Journal of Physical Chemistry B, Electrochemical and surface study of ferrocenoyl oligopeptides, 2004, 108, 704-714. M. B. Buchmann, T. M. Fyles and T. Sutherland, Bioorganic & Medicinal Chemistry, Electrochemical release from gold-thiolate electrodes for controlled insertion of ion channels into bilayer membranes, 2004, 12, 1315-1324. H. B. Kraatz, I. Bediako-Amoa, S. H. Gyepi-Garbrah and T. C. Sutherland, Journal of Physical Chemistry B, Electron transfer through H-bonded peptide assemblies, 2004, 108, 20164-20172. Y. T. Long, C. Z. Li, T. C. Sutherland, H. B. Kraatz and J. S. Lee, Analytical Chemistry, Electrochemical detection of single-nucleotide mismatches: Application of M-DNA, 2004, 76, 4059-4065. Y. T. Long, T. C. Sutherland, H. B. Kraatz and J. S. Lee, Chemical Communications, Photoinduced production of NAD(P)H from an activated fluorescein-DNA monolayer, 2004, 2032-2033. T. C. Sutherland, M. J. Dinsmore, H. B. Kraatz and J. S. Lee, Biochemistry and Cell Biology-Biochimie Et Biologie Cellulaire, An analysis of mismatched duplex DNA unzipping through a bacterial nanopore, 2004, 82, 407-412. T. C. Sutherland, Y. T. Long, R. I. Stefureac, I. Bediako-Amoa, H. B. Kraatz and J. S. Lee, Nano Letters, Structure of peptides investigated by nanopore analysis, 2004, 4, 1273-1277. P. K. Eggers, T. M. Fyles, K. D. D. Mitchell and T. Sutherland, Journal of Organic Chemistry, Ion channels from linear and branched bola-amphiphiles, 2003, 68, 1050-1058. H. B. Kraatz, T. C. Sutherland and F. E. Appoh, Acta Crystallographica Section E-Structure Reports Online, N-ferrocenoyl-labelled glutamate diethyl ester, 2003, 59, M1174-M1175. Y. T. Long, C. Z. Li, T. C. Sutherland, M. Chahma, J. S. Lee and H. B. Kraatz, Journal of the American Chemical Society, A comparison of electron-transfer rates of ferrocenoyl-linked DNA, 2003, 125, 8724-8725.