<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal align=center style='margin-bottom:12.0pt;text-align:center'><b>ChBE Dept. Seminar<br>10:30am-11:30am, Friday, January 24, 2014<br>Rm W122</b><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:12.0pt'>Ordered Organic Self-assemblies and Metal-organic Complexes at Surfaces<o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b>Steven L Tait<o:p></o:p></b></p><p class=MsoNormal align=center style='text-align:center'><b>Indiana University<o:p></o:p></b></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><u><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>ABSTRACT:</span></u></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> </span>The ordering of small molecules, programmed with functional groups for specific non-covalent interactions, can lead to robust, dynamic, and functional monolayers or thin films. Our group studies these assemblies under well-controlled environments by atomic-resolution scanning tunneling microscopy and non-contact atomic force microscopy (structural characterization), X-ray photoelectron spectroscopy (chemical characterization), and high-resolution electron energy loss spectroscopy (vibrational spectroscopy). These studies allow new insights in the roles of ionic bonding, donor-acceptor stacking, transition metal coordination, dipole interactions, and van der Waals interactions in two-dimensional assembly, as well as in the formation of crystalline organic thin films and novel metal-organic complexes at surfaces. In this presentation, new discoveries from our lab will be shown that push the frontiers of these well-ordered nanostructure systems, including highly robust 2D architectures (stable to 180 C), chemical stability by interfacial layer design, surprisingly crystalline multilayers through surface templating and donor-acceptor stacking, chemically-triggered switching of dynamic supramolecular structures (at the liquid-solid interface), and well-defined single site transition metal complexes. These studies open new opportunities in designing organic and metal-organic materials for electronics, photovoltaics, and catalysts.<o:p></o:p></p><p class=MsoNormal style='text-align:justify;text-indent:12.05pt'><span style='font-family:"Franklin Gothic Book","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>