Investigation on organic-inorganic hybrid NLO crystal L-Valine Potassium Penta Borate octa hydrate (LVPPB) for NLO applications

Kamatchi, K.; Umarani, P.R.; Radhakrishnan, T.; Raja, C. Ramachandra

doi:10.1016/j.ijleo.2018.07.054

Cited by 32 publications

(7 citation statements)

References 17 publications

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“…The bands at 2341 and 2349 cm −1 can be assigned to the changing of K + cation coordination environment . Intriguingly, the appearance of K–O stretching vibrations at 511 cm −1 suggests that K + sites engage in a strong interaction with the CO 2 . In situ Raman spectroscopy tests were also performed to explore affinity toward CO 2 by comparing samples in Ar and CO 2 .…”

Section: Resultsmentioning

confidence: 99%

Specific K⁺ Binding Sites as CO₂ Traps in a Porous MOF for Enhanced CO₂ Selective Sorption

Chang

Huang

et al. 2019

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Metal–organic frameworks (MOFs) can be fine‐tuned to boost sorbent‐sorbate interactions in order to improve gas sorption and separation performance, but the design of MOFs with ideal structural features for gas separation applications remains a challenge. Herein it is reported that unsaturated alkali metal sites can be immobilized in MOFs through a tetrazole based motif and that gas affinity can thereby be boosted. In the prototypal MOF of this type‐NKU‐521 (NKU denotes Nankai University), K+ cations are effectively embedded in a trinuclear Co2+‐tetrazole coordination motif. The embedded K+ sites are exposed to the pores of NKU‐521 through water removal, and the isosteric heat (Qst) for CO2 is boosted to 41 kJ mol‐1. The nature of the binding site is validated by molecular simulations and structural characterization. The K+ cations in effect serve as gas traps and boost the CO2‐framework affinity, as measured by the Qst, by 24%. In addition, the impact of unsaturated alkali metal sites upon the separation of hydrocarbons is evaluated for the first time in MOFs using ideal adsorbed solution theory (IAST) calculations and column breakthrough experiments. The results reveal that the presence of exposed K+ sites benefits gas sorption and hydrocarbon separation performances of this MOF.

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Section: Resultsmentioning

confidence: 99%

Specific K⁺ Binding Sites as CO₂ Traps in a Porous MOF for Enhanced CO₂ Selective Sorption

Chang

Huang

et al. 2019

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“…SHG is a second-order NLO effect, and it occurs only for noncentrosymmetric crystals. , Many organic compounds and inorganic salts do not show any second-order nonlinear optical effects due to the presence of inversion centers in their crystal structures. , The same building blocks can be combined in metal–organic frameworks or in co-crystals in a way to ensure noncentrosymmetric structures. Then, the obtained crystals can exhibit the SHG effect. − …”

Section: Introductionmentioning

confidence: 99%

Dimethylaniline-Based Hybrid Compounds of Cadmium Diiodide: Synthesis, Crystal Structure, and Physical Properties

Duda

Gryl

Miniewicz

et al. 2022

Crystal Growth & Design

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In this work, synthesis, crystal structure, and selected properties of two new organic−inorganic compounds based on cadmium iodide with 2,5-and 2,6-dimethylaniline: CdI 2 (2,5-DMA) 2 1 and CdI 2 (2,6-DMA) 2 2, respectively, were investigated. Both compounds were obtained using the same methodology, and their crystal structures were determined from powder (1) and single-crystal (2) X-ray diffraction experiments. The examined materials crystallize in the noncentrosymmetric space group Fdd2 and contain large polarizable iodine ions and electron-rich aromatic ligands. Second harmonic generation (SHG) tests performed with urea as a reference revealed high SHG efficiency of powdered samples 1 and 2. SHG signals measured for samples 1 and 2 are, respectively, around 10 and 8 times larger than the signal for urea. The experimental part was supplemented with theoretical calculations of the second-order electric susceptibility tensor components, χ ijk (2) . Calculated values of the χ 113 (2) tensor component around 1.2−1.4 pm•V −1 suggest that both materials are relatively efficient second harmonic generators. Fibrous morphology of the materials was revealed by scanning electron microscopy (SEM), and the observed bending of the fibers suggested their significant flexibility. Samples 1 and 2 were also characterized by spectroscopic techniques (IR, RS, UV−Vis-DRS) and their thermal stability and decomposition rates were researched using XRPD and TG/DSC, revealing that both investigated materials are thermally stable up to around 100 °C.

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“…[5][6][7][8][9] For the past few decades, nonlinear optical (NLO) materials have earned great attention in the eld of photonics because of their vast applications in LASER, LED, optical display, biosensors, scanners and telecommunication and other elds of photonics. 6,[10][11][12][13][14] Due to their unique properties of producing new electric and magnetic elds, a large number of NLO materials are produced. 15,16 Two major classes of NLO materials are organic and inorganic NLO materials.…”

Section: Introductionmentioning

confidence: 99%

DFT study of superhalogen and superalkali doped graphitic carbon nitride and its non-linear optical properties

et al. 2021

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Investigation on organic-inorganic hybrid NLO crystal L-Valine Potassium Penta Borate octa hydrate (LVPPB) for NLO applications

Cited by 32 publications

References 17 publications

Specific K⁺ Binding Sites as CO₂ Traps in a Porous MOF for Enhanced CO₂ Selective Sorption

Specific K⁺ Binding Sites as CO₂ Traps in a Porous MOF for Enhanced CO₂ Selective Sorption

Dimethylaniline-Based Hybrid Compounds of Cadmium Diiodide: Synthesis, Crystal Structure, and Physical Properties

DFT study of superhalogen and superalkali doped graphitic carbon nitride and its non-linear optical properties

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Investigation on organic-inorganic hybrid NLO crystal L-Valine Potassium Penta Borate octa hydrate (LVPPB) for NLO applications

Cited by 32 publications

References 17 publications

Specific K+ Binding Sites as CO2 Traps in a Porous MOF for Enhanced CO2 Selective Sorption

Specific K+ Binding Sites as CO2 Traps in a Porous MOF for Enhanced CO2 Selective Sorption

Dimethylaniline-Based Hybrid Compounds of Cadmium Diiodide: Synthesis, Crystal Structure, and Physical Properties

DFT study of superhalogen and superalkali doped graphitic carbon nitride and its non-linear optical properties

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Specific K⁺ Binding Sites as CO₂ Traps in a Porous MOF for Enhanced CO₂ Selective Sorption

Specific K⁺ Binding Sites as CO₂ Traps in a Porous MOF for Enhanced CO₂ Selective Sorption