Growth of organic benzimidazole (BMZ) single crystal by vertical Bridgman technique and its structural, spectral, thermal, optical, mechanical and dielectric properties

Muthuraja, A.; Kalainathan, S.

doi:10.1016/j.optmat.2015.06.001

Cited by 18 publications

(5 citation statements)

References 20 publications

(17 reference statements)

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“…There is a sharp fall of absorption around 300 nm in pure BZD. 15 The absorption edge is shifted to a higher wavelength (380 nm), which is associated with a reduced energy gap of BZD + •mNPA − . The peak at 261.71 nm is most likely due to the electronic π → π* transition of COO − in mNPA − .…”

Section: Uv-vis-nir Studiesmentioning

confidence: 99%

“…Benzimidazole (BZD) exhibits solid-state fluorescence emission at 355 nm. 15 The changes in noncoplanarity in different solvents affect the fluorescence behaviour. 49 Moreover, BZD + •mNPA − is sensitive to the hydrogen donor capacity of the polar solvent.…”

Section: Fluorescence Studiesmentioning

confidence: 99%

“…10 BZD and its derivatives exhibit blue emission and solvent polarity on their emissions has been investigated. [11][12][13][14][15][16] BZD is used as an equivalent for water molecules in solid-state electrolytes. 17 The derivatives of BZD such as thiabendazole and flubendazole (anthelmintic) omeprazole and lansoprazole (antiulcerative) and astemizole (antihistaminic) modify its metabolic and pharmacokinetic properties.…”

Section: Introductionmentioning

confidence: 99%

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Crystal growth and physical properties of the organic salt benzimidazolium 3-nitrophthalate

Mekala¹,

Mani

Rietveld

et al. 2016

CrystEngComm

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From the point of view of crystal growth and design, it is interesting to study the effect of different isomers on the resulting structure. Single crystals of the organic salt benzimidazolium 3-nitrophthalate (BZD + •mNPA − ) have been grown by slow evaporation from methanol solution. Single crystal X-ray diffraction demonstrated that the crystal structure belongs to the monoclinic system with space group P2 1 /c. The properties of the functional groups have been studied by FTIR spectroscopy, FT-Raman spectral analysis and 1 H and 13 C NMR spectroscopy. The emission spectra of BZD + •mNPA − were recorded in different solvents; they exhibit a negative solvatochromatic effect when the polarity of the solvent is increased. The thermal stability, dielectric constant and dielectric loss have been investigated and the HOMO and LUMO energy levels have been calculated using density functional theory (DFT). The crystal structure of BZD + •mNPA − has been compared with that of benzimidazolium 2-nitroterephthalate (BZD + •NTPh − ). The interactions of the isomers 3-nitrophthalate or 2-nitroterephthalate salts with benzimidazolium are very similar; however, the different positions of the carboxyl groups on the benzene rings changes the layout of the structure, which leads to undulating sheets for 3-nitrophthalate and flat antiparallel sheets for 2-nitrotherephthalate. The salt decomposes at around 180 °C.

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Section: Uv-vis-nir Studiesmentioning

confidence: 99%

Section: Fluorescence Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Crystal growth and physical properties of the organic salt benzimidazolium 3-nitrophthalate

Mekala¹,

Mani

Rietveld

et al. 2016

CrystEngComm

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“…New nonlinear optical material (NLO) investigation is a significant research field in optics after the materialization of laser [1,2]. Optical single crystals are widely attractive for their applications in electro-optic switches, frequency conversion, colour display, high-energy lasers for inertial confinement fusion research, etc.…”

Section: Introductionmentioning

confidence: 99%

Physical properties of lauric acid crystals grown with KBr in aqueous solution

Maheswari¹,

Krishnan

Kalyanaraman³

et al. 2018

Bull Mater Sci

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Lauric acid crystals were grown with potassium bromide (LAPB) in aqueous solution at room temperature by slow solvent evaporation technique. The monoclinic structure of grown single crystal was studied by single-crystal X-ray diffraction and powder X-ray diffraction analyses. The Fourier transform infrared spectrum incorporates signatures of functional groups. The optical absorbance study reveals the UV cutoff wavelength as 230 nm. The Kurtz powder technique ensures that LAPB crystal has 1.1 times greater second harmonic generation efficiency than that of KDP crystals. The thermogravimetric and differential thermal analyses ensure that the material has good thermal stability. A dielectric behaviour of the sample material is studied in the frequency range 10 1-10 6 Hz.

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“…3 Benzimidazole (BMZ) is one of the potential organic nonlinear optical materials and it has been well studied by different research groups. [4][5][6][7][8][9][10] The title compound has a tendency to grow either by slow evaporation solution or low temperature melt growth techniques. However, high quality single crystals are essential for making devices, otherwise defects act as photon trapping centres hence resulting in the poor transmission of optical signals.…”

Section: Introductionmentioning

confidence: 99%

Effect of ampoule support on the growth of organic benzimidazole single crystals by vertical Bridgman technique for nonlinear optical applications

et al. 2016

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Benzimidazole single crystals were grown using a vertical Bridgman technique with modified ampoule design. The thermal fluctuations during the melt were effectively controlled by the glass ampoule support which was filled with alumina wool in order to maintain a proper temperature gradient throughout the growth process. The unit cell dimensions of the grown crystals were assessed using powder X-ray diffraction technique. Comparative analyses have been carried out for both the crystals which were grown using a conventional ampoule and using the ampoule with support, via high resolution X-ray diffraction and it was found that there was a significant enhancement in crystalline perfection for the crystal which was grown using the ampoule with support. Further, optical transmission and photoluminescence studies on the grown crystals were carried out using UV-vis and photoluminescence spectroscopy and it was observed that there was a noticeable variation in the optical transmission and luminescence results.

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Growth of organic benzimidazole (BMZ) single crystal by vertical Bridgman technique and its structural, spectral, thermal, optical, mechanical and dielectric properties

Cited by 18 publications

References 20 publications

Crystal growth and physical properties of the organic salt benzimidazolium 3-nitrophthalate

Crystal growth and physical properties of the organic salt benzimidazolium 3-nitrophthalate

Physical properties of lauric acid crystals grown with KBr in aqueous solution

Effect of ampoule support on the growth of organic benzimidazole single crystals by vertical Bridgman technique for nonlinear optical applications

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