Process development and characterization of centrosymmetric semiorganic nonlinear optical crystal: 4-dimethylaminopyridine potassium chloride

Johnson, J.; Srineevasan, R.; Sivavishnu, D.

doi:10.1016/j.physb.2018.03.038

Cited by 29 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The grown crystal of 4-methylanilinium 3, 5-dinitrobenzoate dissolved in ethanol was subjected to spectral studies within 200-800 nm wavelength range. The optical characteristics usually exhibits the absorption bands corresponding to π-π*or n-π* transitions within the materials [17]. In short, absorption as well as transmission spectra helps us to identify the nature of the molecule by analysing the transition of electrons in σ and π orbitals between ground state and higher excited states with the energy absorbed [18].…”

Section: Uv-vis-nir Spectral Analysismentioning

confidence: 99%

“…7. The fundamental absorption band was observed at 316.56 nm, which is exploited for the excitation of electrons from the valence band to the conduction band [17]. This weak absorption edge may refer to the n-π* promotions and the transition occurring within the aromatic ring in the sample [17].…”

Section: Uv-vis-nir Spectral Analysismentioning

confidence: 99%

“…The fundamental absorption band was observed at 316.56 nm, which is exploited for the excitation of electrons from the valence band to the conduction band [17]. This weak absorption edge may refer to the n-π* promotions and the transition occurring within the aromatic ring in the sample [17]. The existence of enhanced optical transparency in the Vis-IR region enables the material to be used as a promising aspirant for higher order of non-linear optical generations and terahertz applications [19].…”

Section: Uv-vis-nir Spectral Analysismentioning

confidence: 99%

See 2 more Smart Citations

Growth, linear- nonlinear optical studies and quantum chemistry formalism on an organic NLO crystal for opto-electronic applications: experimental and theoretical approach

et al. 2020

View full text Add to dashboard Cite

An organic non-linear optical material of 4-methylanilinium 3,5-dinitrobenzoate (MADNBA) was synthesized and crystals of MADNBA were grown by employing slow evaporation solution growth technique. The crystal structure was confirmed from Single crystal XRD. Grown crystals were characterized by Powder XRD, UV-Vis-NIR, Photoluminescence and Laser damage threshold measurement studies. Infrared spectroscopy, thermal analysis and microhardness measurement were performed to study the molecular vibration, thermal behaviour and mechanical stability of the grown crystal. Dielectric studies have been performed to evaluate various solid state parameters. From the Kurtz Perry powder technique, it was found that Second harmonic generation efficiency of the obtained compound is 10 times that of the standard potassium dihydrogen phosphate. Z-Scan technique was also carried out to investigate the non-linear activity and optical limiting behaviour of MADNBA crystal. Computational analysis performed upon the optimized geometry of MADNBA molecule using Density Functional Theory confirmed the experimentally determined quantities under a strong theoretical background. Frontier molecular orbital analysis and molecular electrostatic potential analysis were carried out. The non-linear character of the compound was also determined by computing various non-linear optical parameters like dipole moment, polarizability and hyperpolarizability. The first order hyperpolarizability (β) value of the MADNBA molecule was evaluated to be 8 times that of the standard urea molecule. Based on these results, it could be proposed that MADNBA material serves as a potential candidate for frequency doubling, optical limiting and photonic applications in optoelectronics domain.

show abstract

Section: Uv-vis-nir Spectral Analysismentioning

confidence: 99%

Section: Uv-vis-nir Spectral Analysismentioning

confidence: 99%

Section: Uv-vis-nir Spectral Analysismentioning

confidence: 99%

See 1 more Smart Citation

Growth, linear- nonlinear optical studies and quantum chemistry formalism on an organic NLO crystal for opto-electronic applications: experimental and theoretical approach

et al. 2020

View full text Add to dashboard Cite

show abstract

“…4-(Dimethylamino)pyridine (DMAP), a pyridine derivative, has been used in organic synthesis as a nonmetallic catalyst, − in nanotechnology as a capping agent for the preparation of noble metal nanoparticles and chemical sensors − as well as a stabilizer in perovskite solar cells, and in optoelectronics as a building block for the fabrication of novel nonlinear optical materials. − Most of these applications stem from some combination of three of DMAP’s properties: (1) the delocalized electron of the heterocyclic ring, which allows strong π–π interactions between neighboring DMAP molecules or between the molecule and the substrate, (2) the lone electron pair of the endocyclic nitrogen, which can combine with a proton to form 4-(dimethylamino)pyridinium (DMAPH + ) (Figure ), and (3) the exocyclic nitrogen, which partially donates an electron to the aromatic ring, distorting the character of the ring in the process, making it more basic relative to pure pyridine (Figure ). Factors (2) and (3) strongly influence the protonation of DMAP (and therefore its charge).…”

Section: Introductionmentioning

confidence: 99%

Direct Observation of the Potential-Dependent Protonation and Reorientation of 4-(Dimethylamino)pyridine on Gold Electrodes

2023

View full text Add to dashboard Cite

The pyridine derivative, 4-(dimethylamino)pyridine (DMAP), is important in a surprisingly wide variety of applications spanning chemical, biological, and technological domains. Empirically, the protonation state of DMAP and how this protonation state is changed with adsorption on a solid surface are known to play a crucial role in many of these applications. However, direct spectroscopic evidence for bias-dependent DMAP (de)protonation at solid/aqueous interfaces is still very limited. Here, we employed surface-specific vibrational sum frequency (VSF) spectroscopy to study the (de)protonation process of DMAP(H + ) on a polycrystalline gold electrode at neutral pH. Because VSF spectroscopy is interface-specific by its symmetry selection rules, its application allows us to distinguish adsorbed molecules from those close to, but not at, the interface and identify their speciation and orientation with respect to the surface normal. We find that the potentialinduced (de)protonation of flat-lying DMAPH + molecules occurs at relatively low potentials but that both species adsorb horizontally on the surface. A horizontal-to-vertical phase transition occurs only at more positive biases. The physical picture these results suggest confirms and extends that inferred previously from electrochemical measurements and offers a general approach for characterizing interface-induced acid/base chemistry and its relation to interfacial molecular structures.

show abstract

“…Recently, nonlinear optical crystal materials are technologically important because of their applications such as data storage device, frequency converters, optoelectronics, optical communication and lasers [1][2][3].Organic nonlinear optical crystals like L-valinium picrate, L-Valine and L-valinium succinate, triphenyl methane, etc., were displayed good nonlinear optical properties which indicates that the wide attention in the eld of frequency conversion application [4,6].Moreover, inorganic counterparts such as KBBF (Potassium Fluoro Borate Beryllate), BCB (Barium Calcium Borate) crystals showed the large thermal and mechanical stability, high transmittance properties in UV and visible region and low nonlinear e ciency [7,8]. Now a days, amino acid families are discovered an important class of nonlinear optical semi-organic crystal of organic material combined with mechanical and thermal properties of inorganic materials [9][10][11][12]. Furthermore, Amino acids-based complexes as were reported as a potential candidate crystal for frequency conversion applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Evaluation of New Semi-Organic Non-Linear Optical L-Glutamic Acid Manganese Chloride (LGAMC) Crystal for Frequency Conversion Applications

Shanthi

Ravikumar²,

Sagayaraj³

et al. 2021

Preprint

View full text Add to dashboard Cite

In this Work, L-Glutamic acid manganese chloride (LGAMC) semi-organic nonlinear optical crystal has been grown by slow evaporation technique. Crystal structure and essential functional groups of LGAMC crystal were confirmed by single crystal XRD and FTIR analyses. Thermal stability and surface trait were determined by using TG/DTand SEM analyses. Linear optical studies revealed the lower cut-off wavelength at 244 nm in transparency UV-Visible region. Mechanical behavior of the crystal was analyzed by microhardness test which indicates that the hard category material. From photoluminescence spectrum, a sharp emission peak was observed at 532 nm which demonstrates that the grown crystal has good nonlinear optical behavior. The SHG efficiency of LGAMC crystal was found to be 1.3 times superior than well-known reference KDP crystal.

show abstract

Process development and characterization of centrosymmetric semiorganic nonlinear optical crystal: 4-dimethylaminopyridine potassium chloride

Cited by 29 publications

References 28 publications

Growth, linear- nonlinear optical studies and quantum chemistry formalism on an organic NLO crystal for opto-electronic applications: experimental and theoretical approach

Growth, linear- nonlinear optical studies and quantum chemistry formalism on an organic NLO crystal for opto-electronic applications: experimental and theoretical approach

Direct Observation of the Potential-Dependent Protonation and Reorientation of 4-(Dimethylamino)pyridine on Gold Electrodes

Synthesis and Evaluation of New Semi-Organic Non-Linear Optical L-Glutamic Acid Manganese Chloride (LGAMC) Crystal for Frequency Conversion Applications

Contact Info

Product

Resources

About