Contact
    Start Publications Molecular stacking and emission properties in Langmuir-Blodgett ...
    ←  Publication Finder
    Attension

    Molecular stacking and emission properties in Langmuir-Blodgett films of two alkyl substituted perylene tetracarboxylic diimides

    Year: 2004

    Journal: Organic Electronics (2003), 20111221

    Authors: T. del Cao , V. Parra , M.L. Rodriguez-Mendez , R. Aroca , J.A. de Saja

    Organizations: a Dpto. Fisica de la Materia Condensada, Facultad de Ciencias, Universidad de Valladolid, Po Prado de la Magdelena s/n, 47005 Valladolid, Spain b Dpto. Qimica Inorginica, E.T.S.I.I, Universidad de Valladolid, Po Paseo del Cauce s/n, 47011 Valladolid, Spain c Materials and Surface Group, School of Physical Sciences, University of Windsor, 4012 Sunset Ave, Windsor, Ont., Canada N9B 3P4

    The structural and optical properties of Langmuir-Blodgett (LB) .lms of two perylene diimide derivates, N,N'-Bis(propyl)-3,4,9,10-perylenebis dicarboximide) and N,N'-Bis(neopentyl)-3,4,9,10-perylenebis(dicarboximide), are reported. The surface pressure-area (π-A) isotherms have evidenced how the lateral chain substituents control the strength of the intermolecular interaction. Nevertheless, a head-on tilted molecular orientation on the water subphase was found for both compounds. This molecular orientation is preserved when the monolayers are transferred onto substrates. Molecular orientation in the .lms was extracted from comparative analysis of transmission and reflection-absorption infrared spectroscopy (RAIRS) data. Film structure has been studied by means of atomic force microscopy (AFM). The observed di.erent emission pro.les have been correlated with the ability of the derivatives to get coupled.