Browsing by Author/Contributor "Martin, Christopher M., 1973-"

Now showing items 1-5 of 5

  • Geometry-Dependent Electronic Properties of Highly Fluorescent Conjugated Molecules 

    Yang, Shun-Chun; Graupner, W.; Guha, Suchi; Puschnig, P.; Martin, Christopher M., 1973-; Chandrasekhar, Holalkere R.; Chandrasekhar, Meera; Leising, G.; Ambrosch-Draxl, C.; Scherf, Ullrich (American Physical Society, 2000)
    We present a combined experimental/theoretical study of the electronic properties of conjugated para- phenylene type molecules under high pressure up to 80 kbar. Pressure is used as a tool to vary the molecular geometry ...

  • Hydrostatic pressure dependence of the luminescence and Raman frequencies in polyfluorene 

    Martin, Christopher M., 1973-; Guha, Suchi; Chandrasekhar, Meera; Chandrasekhar, Holalkere R.; Guentner, R.; De Freitas, P. Scanduicci; Scherf, Ullrich (American Physical Society, 2003)
    We present studies of the photoluminescence (PL), absorption, and Raman scattering spectra from poly[2,7-(9,9′-bis(2-ethylhexyl))fluorene] under hydrostatic pressures of 0-100 kbar at room temperature. The well-defined ...

  • Pressure dependence of the luminescence and Raman modes in polyfluorene 

    Martin, Christopher M., 1973- (University of Missouri--Columbia, 2005)
    I present a study of the optical properties of poly-para-phenylene and three different side-chain substituted polyfluorene polymers. I present an analysis of the Raman spectra under hydrostatic pressures for three ...

  • Temperature-dependent photoluminescence of organic semiconductors with varying backbone conformation 

    Guha, Suchi; Rice, J. D.; Yau, Y. T.; Martin, Christopher M., 1973-; Chandrasekhar, Meera; Chandrasekhar, Holalkere R.; Guentner, R.; Scanduicci de Freitas, P.; Scherf, Ullrich (American Physical Society, 2003)
    We present photoluminescence studies as a function of temperature from a series of conjugated polymers and a conjugated molecule all with distinctly different backbone conformations. The organic materials investigated here ...

  • Ultrafast Formation of Nonemissive Species via Intermolecular Interaction in Single Crystals of Conjugated Molecules 

    Loi, M. A.; Mura, A.; Bongiovanni, G.; Cai, Qingsheng, 1966-; Martin, Christopher M., 1973-; Chandrasekhar, Holalkere R.; Chandrasekhar, Meera; Graupner, W.; Garnier, F. (American Physical Society, 2001)
    We investigate the influence of interchain interactions on the photoluminescence processes in a sexithiophene single crystal by applying hydrostatic pressure. We perform transient photoluminescence spectroscopy in the time ...