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Crystal Structure and Properties of a New Organic Nonlinear Optical Material

Published online by Cambridge University Press:  31 January 2011

R. N. Rai
Affiliation:
Department of Chemical Engineering, National Taiwan University, Taipei,Taiwan 10617
C. W. Lan*
Affiliation:
Department of Chemical Engineering, National Taiwan University, Taipei,Taiwan 10617
*
a)Address all correspondence to this author. cwlan@ntu.edu.tw
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Abstract

The single crystals of a binary organic 1:1 molecular complex were grown from different solvents. The single crystal x-ray diffraction study revealed that the binary material has crystallized with a noncentrosymmetric space group (P21) entirely different from that of the parent components. Second harmonic generation measurement on polycrystalline material shows green light emission with the molecular complex. The differential scanning calorimeter and the thermogravimetric analysis show eminent higher melting point and decomposition temperature, respectively for the binary molecular complex compared to that of urea and m-nitrobenzoic acid. The optical spectrum of newly grown crystal shows the cutoff wavelength (398 nm) near the UV region, and the micro hardness measurement confirmed the greater hardness of the binary crystal.

Type
Articles
Copyright
Copyright © Materials Research Society 2002

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