Now showing items 6-11 of 11

    • Nematic-like stable glasses without equilibrium liquid crystal phases 

      Ediger, Mark; Lian, Yu; Bishop, Camille; Huang, Chengbin; Gujral, Ankit; Gomez, Jaritza (American Institute of Physics, 2017)
      We report the thermal and structural properties of glasses of posaconazole, a rod-like molecule, prepared using physical vapor deposition (PVD). PVD glasses of posaconazole can show substantial molecular orientation ...
    • Origin of Anisotropic Molecular Packing in Vapor-Deposited Alq3 Glasses 

      Bagchi, Kushal; Jackson, Nicholas E.; Gujral, Ankit; Huang, Chengbin; Toney, Michael F.; Yu, Lian; de Pablo, Juan J.; Ediger, M. D. (American Chemical Society, 2018-12-24)
      Anisotropic molecular packing is a key feature that makes glasses prepared by physical vapor deposition (PVD) unique materials, warranting a mechanistic understanding of how a PVD glass attains its structure. To this end, ...
    • Photostability can be significantly modulated by molecular packing in glasses 

      Ediger, Mark; de Pablo, Juan; Antony, Lucas; Qiu, Yue (Journal of the American Chemical Society, 2016-08-12)
      While previous work has demonstrated that molecular packing in organic crystals can strongly influence photochemical stability, efforts to tune photostability in amorphous materials have shown much smaller effects. Here ...
    • Tenfold increase in the photostability of an azobenzene guest in vapor-deposited glass mixtures 

      Ediger, Mark; de Pablo, Juan; Torkelson, John; Antony, Lucas; Qiu, Yue (2018-09-10)
      Improvements to the photostability of organic glasses for use in electronic applications have generally relied on modification of chemical structure. We show here that the photostability of a guest molecule can also be ...
    • Vapor-Deposited Glasses with Long-Range Columnar Liquid Crystalline Order 

      Gujral, Ankit; Gomez, Jaritza; Ruan, Shigang; Toney, Michael F.; Bock, Harold; Yu, Lian; Ediger, M. D. (American Chemical Society, 2017-10-04)
      Anisotropic molecular packing, particularly in highly ordered liquid crystalline arrangements, has the potential for optimizing performance in organic electronic and optoelectronic applications. Here we show that physical ...
    • Vapor-deposited Organic Glasses Exhibit Enhanced Stability Against Photodegradation 

      Ediger, Mark; Dalal, Shakeel; Qiu, Yue (Soft Matter, 2018-03-25)
      Photochemically stable solids are in demand for applications in organic electronics. Previous work has established the importance of the molecular packing environment by demonstrating that different crystal polymorphs ...