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Anisotropic Organic Materials. Approaches to Polar Order by Rainer Glaser, Piotr Kaszynski

By Rainer Glaser, Piotr Kaszynski

This ebook examines fresh development within the improvement and alertness of optical polymers, molecular crystals, crystals in drinks and liquid crystals. The accomplishment of a excessive macroscopic polarization is a key factor all through which transcends the layout and function standards of optical fabrics. The chapters integrated during this quantity specialize in orientation order and the success of macroscopic polarizations.

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F o r the alignment o f molecules perpendicular to the substrate surface, most c o m m o n techniques include L a n g m u i r - B l o d g e t t ( L B ) film formation, h i g h electric field poling, and self-assembly using the layer-by-layer methodology (4). F o r aligning molecules parallel to the substrate surface (in-plane), the anisotropy can be induced b y an anisotropic substrate surface (7). H o w e v e r , i f an isotropic substrate surface is required, the surface alone cannot induce an in-plane preferential alignment over a large area.

W h e n a molecule is incorporated into a host matrix, the interaction o f this molecule w i t h the host matrix leads to a shift o f the transition energy (and also to a broadening since the solid host matrix offers additional relaxation channels). ; ACS Symposium Series; American Chemical Society: Washington, DC, 2001. ch002 24 separation and relative orientation o f guest and host molecules. I f the local structure is unique, that is, i f each o f the guest molecules has exactly the same microscopic local environment, all guest molecules w i l l experience exactly the same shift o f their electronic state energies.

4; pp 621-679. ; W o e h l , J . ; Orrit, M. J. Phys. Chem. A 1999, 103, 2429-2434. ; Personov, R. I. J. Chem. Phys. 1987, 86, 53000-5307. ; W i l d , U. P. Chem. Phys. Lett. 1992, 190, 75-82. ; M a i e r , M. J. Chem. Phys. 1987, 87, 809-820. W i l d , U. ; Güttler, F . ; Renn, A. Chem. Phys. Lett. 1992, 193, 451-455. K o h l e r , Β. , personal communication. Persistent Spectral Hole-Burning: Science and Applications; Moerner, W . ; Springer-Verlag: B e r l i n , 1988; Vol. 44, pp 315. Barker, J.

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