Growth of phthalic anhydride in a closed crystal—Vapour system

George, Jino; Premachandran, S K

doi:10.1016/0022-0248(78)90378-0

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…They have been used in the preparation of polyimides exhibiting long-term second harmonic generation (SHG) [2]. They can form spherulitic [3] and dendritic [4] structures. Still, only a few theoretical and experimental studies have characterized the linear and nonlinear optical properties of anhydride derivatives [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

First Principles Investigation of the Polarizability and First Hyperpolarizability of Anhydride Derivatives

Hadji

Champagne

2019

Chemistry Africa

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The electrical properties (dipole moment, polarizability, and first hyperpolarizabilities) of anhydride derivatives are studied using theoretical chemistry methods. Several DFT XC functionals have been used while reliable atomic basis sets have been selected for their evaluations. The variations of (hyper)polarizabilities as a function of the anhydride structure are consistent among the different functionals, which facilitates the deduction of structure-property relationships. It has been observed that (1) The dipole moment of maleic anhydride (2) increases when adding a methyl group (3) and even more when fusing a phenyl ring to get phthalic anhydride (1), in good agreement with experiment. (2) The average polarizability is mostly driven by the molecular size while the polarizability anisotropy presents more subtle variations as a function of the compound. (3) For 1 and 2, the calculated polarizability tensor components are in close agreement with the experimental data. (4) To a good extend, the HRS first hyperpolarizabilities follow the same ordering as the polarizability anisotropy. (5) The EFISHG first hyperpolarizabilities exhibit a completely different ordering while its sign depends on the orientation of the CO double bonds. Finally, since the first hyperpolarizability values of these anhydride derivatives are of moderate amplitude, like those of amino acids, several design strategies have been discussed for achieving their enhancement.

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Section: Introductionmentioning

confidence: 99%

First Principles Investigation of the Polarizability and First Hyperpolarizability of Anhydride Derivatives

Hadji

Champagne

2019

Chemistry Africa

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“…Phthalic anhydride exhibits interesting properties such as fluorescence and phosphorescence [8]. George and Premachandran reported the dendritic, spherullitic and hollow formation of Phthalic anhydride (PA) crystals [9][10][11]. In the present study, the bulk single crystals of PA have been grown by the Vertical Bridgman technique (VBT) with the use of double wall glass ampoule and the growth conditions have been optimized.…”

Section: Introductionmentioning

confidence: 97%

Characterization of melt grown phthalic anhydride single crystal

Babu¹,

Sethuraman²,

Vijayan³

et al. 2007

Cryst. Res. Technol.

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A bulk organic single crystal of phthalic anhydride (PA) was grown by vertical Bridgman technique. The structural perfection of the grown crystal was analysed by high resolution X-ray diffraction (Multicrystal Xray diffractometry) studies. The thermal and mechanical properties have been studied. The second harmonic generation relative efficiency of Phthalic anhydride crystal is compared with KDP crystal.

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“…Phthalic Anhydride (PA) is one of the organic compounds with promising NLO properties. PA exhibits interesting properties such as fluorescence, phosphorescence [6], dendritic [7], spherullitic [8], and hollow formations [9]. Crystal growth from solution is an important process in many applications [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Crystal Growth, Spectral, Thermal and Optical Properties of Phthalic Anhydride (PA) Single Crystal

Janarthanan

Rajan

Samuel

et al. 2012

AMR

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Organic single crystal of Phthalic Anhydride (PA) was successfully grown by slow evaporation method. The structure of the grown crystal was confirmed by X-ray diffraction analysis. FT-IR, and FT-Raman spectral analysis of the crystalline samples reveal that the crystalline sample consists of all functional groups. The placement of protons was identified from H1-NMR spectral analysis. UV-Visible and photoluminescence spectral analyses were carried out for the grown crystals. The thermal behavior was studied with TGA-DTA analyses. The existence of second harmonic generation (SHG) signal was observed using Nd:YAG laser with a fundamental wavelength of 1064 nm. Keywords: Organic crystals, NLO crystals

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Growth of phthalic anhydride in a closed crystal—Vapour system

Cited by 4 publications

References 7 publications

First Principles Investigation of the Polarizability and First Hyperpolarizability of Anhydride Derivatives

First Principles Investigation of the Polarizability and First Hyperpolarizability of Anhydride Derivatives

Characterization of melt grown phthalic anhydride single crystal

Crystal Growth, Spectral, Thermal and Optical Properties of Phthalic Anhydride (PA) Single Crystal

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