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The effect of pure and mixed solvents on solute-solvent interactions, solubility and growth aspects of 4-aminobenzophenone

Veerabagu Natarajan 1Mukannan Arivanandhan 2Yasuhiro Hayakawa 2

1. Department of Physics, Aditanar College of Arts and Science,, Tiruchendur 628216, India
2. Research Institute of Electronics, Shizuoka University, Johoku 3-5-1, Naka-Ku,, Hamamatsu 432-8011, Japan


The NLO materials are playing an important role in generating the green and blue lasers by second harmonic generation (SHG) of frequency doubling of low frequency laser radiations. Organic nonlinear optical crystals are the current interest because of their high NLO efficiency and fast response than the inorganic NLO materials.  Benzophenone and its derivatives are potential organic NLO material with good optical, mechanical properties, and non hygroscopic nature is a best alternate material for urea. Although 4-amino benzophenone (4-ABP) is one of the best derivatives of benzophenone with the SHG efficiency of 360 times larger than that of ADP, growth of high quality bulk crystal still remains as a difficult task. In this scenario, the effect of pure and mixed solvents on the growth aspects of 4-ABP was investigated to grow 4-ABP bulk crystals. Ethyl acetate, ethanol and acetone were chosen as solvents for the present investigation. Single crystals of 4-ABP were grown by slow evaporation method using the above solvents. In addition with the above solvents, ethanol and acetone (1:1) mixed solvent was used for the growth of 4-ABP crystal to study the effect of mixed solvent. Solvent inclusions were observed in particular growth faces which have relatively high growth rates. The structural, mechanical and optical properties of the grown 4-ABP were analyzed. The optical transmission study shows that the 4-ABP crystal has about 70 % transparency in the visible region and it has the cut off wavelength of 400 nm. The 4-ABP sample exhibits the SHG efficiency of 161 times larger than that of KDP.


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Related papers

Presentation: Poster at 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17, Topical Session 6, by Mukannan Arivanandhan
See On-line Journal of 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17

Submitted: 2013-04-12 04:30
Revised:   2013-04-12 12:56