1. Center for Functional Nanomaterials Seminar

    "π-Conjugated Nanostructured Carbons and Small Molecules that Map Directly Onto Them"

    Presented by Chandrani Pramanik, University of New Hampshire, Department of Chemistry & Materials Science

    Wednesday, March 27, 2013, 11 am
    CFN, Bldg 735, Conference Room B

    Hosted by: James Dickerson

    In this talk, I will discuss the chemistry, electronic properties, self-assembly and applications of π-conjugated carbon materials such as pentacenes, [60]fullerene and carbon nanotubes. Pentacene is a benchmark organic semiconductor due to its low HOMO-LUMO gap and high charge carrier mobility in its thin film. Its poor solubility and instability, however, limit its low- cost applications. New types of soluble and stable organosulfur-functionalized pentacene derivatives overcome these problems. Following this path, we recently discovered the first water- soluble pentacene (WSP) derivative. UV-Vis spectroscopic and electrochemical characterizations of WSP will be presented, along with current applications. Diels-Alder cycloaddition reactions between C60 and organothio substituted pentacenes will also be discussed. Expected acceptor characteristics of soluble and super hydrophobic bis([60]fullerene) adduct of 6,13-decylthiopenatecne (BC60DTP) will be addressed. The self-assembly of (un)functionalized carbon nanotubes with and without (un)functionalized polystyrene latex (PSL) particles on different substrates will also be presented and discussed.