caa a22 4500 388021071 CHVBK 20180307124924.0 cr unu---uuuuu 161130e199801 xx s 000 0 eng 10.1557/JMR.1998.0018 doi S0884291400042552 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0018 Molecular orientation in single crystal thin films of N-(4-nitrophenyl)-(L)-prolinol [Elektronische Daten] Thin single crystal films of N-(4-nitrophenyl)-(L)-prolinol (NPP) were prepared using the modified shear method. The surface orientation of the single crystal films was determined by x-ray diffraction and was found to be [101]. Polarized microscopy showed uniform birefringence and complete extinction when the thin film was rotated under crossed polarization, implying single crystal thin films with uniform surface were obtained. The molecular orientation in the NPP thin film was studied by polarized UV-visible and polarized micro-FTIR spectroscopy along with x-ray diffraction. The orientation of the NPP molecules was found to be almost parallel to the plane of the film. This parallel orientation is because of the polar (hydrogen bonding) interaction of the −(OH) and the N=O groups of the NPP molecule with the hydrophilic substrate surface. The results of the second harmonic generation (SHG) measurements are consistent with such a molecular orientation. These results show that the final molecular and crystallographic orientation in the film is determined by its initial molecule-substrate interaction. Copyright © Materials Research Society 1998 Zhou Ligui Auburn University, Auburn, Alabama 36849 Thakur M. Auburn University, Auburn, Alabama 36849 Journal of Materials Research Cambridge University Press 13/1(1998-01), 131-134 0884-2914 13:1<131 1998 13 JMR https://doi.org/10.1557/JMR.1998.0018 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0018 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhou Ligui Auburn University, Auburn, Alabama 36849 NATIONALLICENCE 700 1- Thakur M. Auburn University, Auburn, Alabama 36849 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/1(1998-01), 131-134 0884-2914 13:1<131 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge