Synthesis and single crystal growth of l-proline cadmium chloride monohydrate and its characterization for higher order harmonic generation applications

Thukral, Kanika; Vijayan, N.; Rathi, Brijesh; Bhagavannaryana, G.; Verma, Sunil; Philip, J.; Krishna, A. G. Gopala; Jeyalakshmy, M. S.; Halder, S. K.

doi:10.1039/c3ce41957f

Cited by 27 publications

(10 citation statements)

References 24 publications

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“…In the title compound, C 18 H 23 BrN 2 O 4 , the C atoms of the phenyl rings are disordered over two positions [site occupancies = 0.58(4) and 0.42 (4)]. In the crystal packing, the cations and anions are linked by intermolecular N-H⋯O, N-H⋯Br and O-H⋯O type hydrogen bonds.…”

Section: Single-crystal X-ray Diffractionmentioning

confidence: 99%

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l-Phenylalaninel-phenylalaninium bromide – a new nonlinear optical material

Surekha¹,

Gunaseelan

Sagayaraj³

et al. 2014

CrystEngComm

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L-Phenylalanine L-phenylalaninium bromide (LPLPB), an amino acid non-centrosymmetric crystal having a large second harmonic generation (SHG) efficiency, being 4.5 times that of KH 2 PO 4 (KDP), has been successfully grown using a slow evaporation method employing a temperature gradient technique. The structure of the grown crystal was solved and refined by single-crystal X-ray diffraction, and this demonstrates that it belongs to a monoclinic system with the space group P2 1 . The confirmation of its functional groups was recorded using Fourier transform infrared spectroscopy. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to study its thermal properties. The optical behaviour was examined and its optical constants were determined by UV-vis analysis. Dielectric spectroscopy reveals the dielectric nature of the grown crystal. The mechanical strength of the grown LPLPB was estimated by microhardness studies, and the Young's modulus of the grown LPLPB was calculated to be 3.310 × 10 10 N m −2 .

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Section: Single-crystal X-ray Diffractionmentioning

confidence: 99%

“…2 The crystal structures of amino acids and their complexes have provided a thorough knowledge of the influence of their structure and molecular properties. 4 One such effort in developing a new amino acid crystal having appreciable optical nonlinearity and enhanced physical properties is LPLPB.…”

Section: Introductionmentioning

confidence: 99%

l-Phenylalaninel-phenylalaninium bromide – a new nonlinear optical material

Surekha¹,

Gunaseelan

Sagayaraj³

et al. 2014

CrystEngComm

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“…An analytical approach has been employed to estimate some of the characteristic data of γ‐glycine, such as polarizability, plasmon energy and Fermi energy based on the below formalisms by taking into account its molecular weight (M = 75.07 g mol −1 ), total number of valence electrons (Z = 30) and density (ρ = 1.59 g cm −3 ). The valence electron plasmon energy ħω P is calculated using the relation

ℏ ω_{P} = 28.8 {([], Z ρ / M)}^{1 / 2}

where Z is the total number of valence electrons, ρ is the density and M is the molecular weight of glycine. The plasmon energy in terms of Penn gap and Fermi energy in eV is given as

E_{p} = [ℏ ω_{P} / {(ɛ_{\infty} - 1)}^{1 / 2}]

and

E_{F} = 0.2984 {([], ℏ ω_{P})}^{4 / 3}

The polarizability α, from the Penn gap analysis is given by

μ = [{(ℏ ω_{P})}^{2} S_{0}] [1 / 3 E_{p}^{2}]

α = μ (M / ρ) (0.396 \times 10^{24}) c m^{- 1}

where S 0 is the constant for a particular material and is given by

S_{0} = [1 - [E_{p} / 4 E_{F}] + (1 / 3) {(E_{p} / 4 E_{F})}^{2}

The value of polarizability α is also being confirmed by using the Clausius–Mossotti relation given by …”

Section: Resultsmentioning

confidence: 99%

Synthesis, bulk growth, polarizability and nonlinear optical properties of γ‐glycine single crystals

Devi

Srinivasan

2015

Crystal Research and Technology

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The role of sodium acetate, sodium nitrate, sodium hydroxide and malonic acid as additives in assisting the nucleation of γ‐polymorph from solution has been investigated. For the first time large dimensional bulk single crystals of γ‐glycine have been grown at the optimized concentration of the additives by the top seeded slow cooling technique. The bulk growth of single crystals elucidates well the unidirectional growth characteristics and the existence of merohedral twinning in γ‐ glycine. Polarizability, plasmon energy and Fermi energy has been evaluated for the first time for γ‐glycine single crystals based on an analytical approach. Structural affirmation of the nucleated polymorph has been carried out by Powder x‐ray diffraction and the thermal characteristics of the nucleated polymorph are well revealed by Differential Scanning Calorimetry. The non linear optical characteristics of γ‐glycine studied by Kurtz and Perry technique revealed increased SHG efficiency with the highest of about 2.2 in the presence of malonic acid compared to the standard Potassium dihydrogen orthophosphate (KDP).

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“…The values of the decay components obtained from the fitted curve are 1 ¼ 3:67 ms, 2 ¼ 1:80 ms and 3 ¼ 6:60 ms. Thereby, we can deduce their nature as shallow and deep defects (Khan et al, 2008;Thukral et al, 2014;Vijayan et al, 2014). The residuals shown in the inset of Fig.…”

Section: Photoluminescence and Time-resolved Photoluminescence Studiesmentioning

confidence: 91%

“…A PL study can provide information about the different energy states between the valence band and conduction band of the crystal, marking the presence of f-centres/vacancies and other associated defects (Thukral et al, 2014). Room-temperature steady-state PL excitation and PL emission of the l-LHBr single crystal were studied in the range 200-700 nm using a luminescence spectrometer (Make: Edinburgh; Model: F900) equipped with a xenon lamp and monochromators.…”

Section: Photoluminescence and Time-resolved Photoluminescence Studiesmentioning

confidence: 99%

Synthesis and nucleation studies onL-leucine hydrobromide: a promising nonlinear optical material

et al. 2014

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To achieve good quality bulk size crystal growth, an assessment of the nucleation kinetics of a semi‐organic L‐leucine hydrobromide (L‐LHBr) crystal was carried out using double‐distilled water as solvent medium. The effect on metastable zone width (MSZW) with increasing temperature and on induction period with varied supersaturation level was determined experimentally and was found to be very well in accordance with the nucleation theory prospects. Thereafter, various other nucleation parameters, such as Gibbs free energy and interfacial energy, were also determined. The knowledge of these nucleation parameters indicated the requisite temperature domain and the appropriate growth technique, leading to the successful single‐crystal growth of L‐LHBr by slow cooling in the temperature range 298–291 K. The cooling rate of 0.25 K per day was optimized after repeated trials. X‐ray diffraction and Raman analysis were performed on grown crystals for the verification of the material. High‐resolution X‐ray diffraction analysis was used to assess the crystalline perfection of the grown crystals. To further explore the properties of the grown crystals, photoluminescence and time decay studies, etching analysis, and Z‐scan measurements were performed.

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Synthesis and single crystal growth of l-proline cadmium chloride monohydrate and its characterization for higher order harmonic generation applications

Cited by 27 publications

References 24 publications

l-Phenylalaninel-phenylalaninium bromide – a new nonlinear optical material

l-Phenylalaninel-phenylalaninium bromide – a new nonlinear optical material

Synthesis, bulk growth, polarizability and nonlinear optical properties of γ‐glycine single crystals

Synthesis and nucleation studies onL-leucine hydrobromide: a promising nonlinear optical material

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