Third order nonlinear optical properties of azomethine derivatives

Rao, DN; Sharafudeen, K. N.; Chandrasekharan, K.; Varghese, Soney

doi:10.1016/j.optcom.2012.09.012

Cited by 15 publications

(6 citation statements)

References 24 publications

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“…TGA of the adsorbent in O 2 (Figure 1c) was performed. The results showed that an initial weight loss of 17.02 wt % was in the range from 30 to 150 °C, which can be attributed to the dehydration of A second weight loss of 13.92 wt % was found to occur from 150 to 350 °C due to the departure of the isopropoxy group, 30 which was consistent with the theoretical weight loss for the decomposition of the isopropoxy group (14.48 wt %). After 400 °C, H 2 BDC organic linkers (33.26 wt %) of the frameworks were decomposed and zirconium was oxidized into ZrO 2.…”

Section: Resultssupporting

confidence: 81%

“…Based on the calculation of weight loss for H 2 O, the theoretical composition of the sample was determined to be Zr 6 O 4 (OH) 4 (BDC-IPO) 6 ·23H 2 O. A second weight loss of 13.92 wt % was found to occur from 150 to 350 °C due to the departure of the isopropoxy group, which was consistent with the theoretical weight loss for the decomposition of the isopropoxy group (14.48 wt %). After 400 °C, H 2 BDC organic linkers (33.26 wt %) of the frameworks were decomposed and zirconium was oxidized into ZrO 2.…”

Section: Resultssupporting

confidence: 71%

See 1 more Smart Citation

Novel Isopropoxy Group-Functionalized UiO-66 with a High Hydrogen Chloride Adsorption Capacity

Liu

Bai

et al. 2019

J. Chem. Eng. Data

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In this paper, a novel isopropoxy group-functionalized UiO-66 (UiO-66-IPO) was synthesized by a general strategy and then used as an adsorbent for the removal of hydrogen chloride from aqueous solutions. The as-synthesized product was characterized by X-ray powder diffraction, scanning electron microscopy, thermal gravimetric analysis, N2 adsorption and desorption isotherms, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The adsorbent showed a much higher adsorption capacity of 429.68 mg·g–1 under the initial condition of 1.4 mol·L–1 HCl concentration at 25 °C within a relatively short time (4 h). Adsorption kinetics, isotherms, thermodynamics, regeneration, and the mechanism of hydrogen chloride adsorption on the adsorbent were studied. The results showed that the hydrogen chloride adsorption process reached equilibrium quickly in 4 h, and the adsorption kinetics on UiO-66-IPO was well-described by the pseudo-second-order model. Meanwhile, the Henry isotherm and Freundlich isotherm fitted the experiment data well. The thermodynamic parameters, such as ΔG, ΔH, and ΔS, were determined, and the results indicated that the adsorption process was spontaneously exothermic and entropy decreasing. XPS and FT-IR were conducted to explore the hydrogen chloride adsorption mechanism. The regeneration experiments demonstrated that UiO-66-IPO still exhibited excellent adsorption performance on hydrogen chloride after three cycles.

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Section: Resultssupporting

confidence: 81%

Section: Resultssupporting

confidence: 71%

Novel Isopropoxy Group-Functionalized UiO-66 with a High Hydrogen Chloride Adsorption Capacity

Liu

Bai

et al. 2019

J. Chem. Eng. Data

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“…Azomethine derivatives 140 and 141 (Chart ) were studied using the Z -scan technique with 7 ns pulses at 532 nm . The nonlinear refractive index η 2 and the third-order nonlinear susceptibility χ (3) were 10 –13 cm 2 /W and 10 –13 esu, respectively.…”

Section: Organic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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“…Заместители влияют также на термическую стабильность НЛО материалов. Доказано, что азометины с изопропоксигруппой в качестве заместителя имеют лучшую термостабильность и более высокие показатели  (3) , нежели с изопропильной [171].…”

Section: нелинейно-оптические свойства полиазометиновunclassified