نتایج جستجو برای: molecular orientation

تعداد نتایج: 731909  

Journal: :Current Biology 2015
Evan B. Dewey Desiree Sanchez Christopher A. Johnston

Multicellular animals have evolved conserved signaling pathways that translate cell polarity cues into mitotic spindle positioning to control the orientation of cell division within complex tissue structures. These oriented cell divisions are essential for the development of cell diversity and the maintenance of tissue homeostasis. Despite intense efforts, the molecular mechanisms that control ...

Journal: :Advanced Materials 2021

In organic light-emitting diodes (OLEDs), horizontal orientation of the emissive transition dipole moment (TDM) can improve light outcoupling efficiency by up to 50% relative random orientation. Therefore, there have been extensive efforts identify drivers The aspect ratio emitter molecule and glass-transition temperature (Tg) films are currently regarded as particularly important. However, rem...

2008
David W. Litchfield Donald G. Baird

The effect of nanoclay concentration on the molecular orientation and drawability of poly(ethylene terephthalate) PET was examined using thermal and vibrational spectroscopic analysis. Although drawability at 83 C in hot air increased by the addition of nanoclay, the maximum draw ratio was independent of nanoclay concentration. The average molecular orientation of the PET chain was found to mim...

Journal: :Journal of the American Chemical Society 2013
Kai Xiao Wan Deng Jong K Keum Mina Yoon Ivan V Vlassiouk Kendal W Clark An-Ping Li Ivan I Kravchenko Gong Gu Edward A Payzant Bobby G Sumpter Sean C Smith James F Browning David B Geohegan

The epitaxial growth and preferred molecular orientation of copper phthalocyanine (CuPc) molecules on graphene has been systematically investigated and compared with growth on Si substrates, demonstrating the role of surface-mediated interactions in determining molecular orientation. X-ray scattering and diffraction, scanning tunneling microscopy, scanning electron microscopy, and first-princip...

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