Anion-controlled dielectric behavior of homochiral tryptophan-based metal-organic frameworks

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101141

Title:	Anion-controlled dielectric behavior of homochiral tryptophan-based metal-organic frameworks
Authors:	張伯琛;Mendiratta, Shruti;Usman, Muhammad;Luo, Tzuoo-Tsair;Chang, Bor-Chen;Lee, Shang-Fan;Lin, Ying-Chih;Lu, Kuang-Lieh
Contributors:	理學院化學學系
Keywords:	Condensed matter: electronic structure, electrical, magnetic, and optical properties;Condensed matter: structure, mechanical and thermal properties;Cross-disciplinary physics: materials science;rheology;Exact sciences and technology;Materials science;Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation;Optical properties of bulk materials and thin films;Organic compounds;Other materials;Physics;Specific materials;Structure of solids and liquids;crystallography;Structure of specific crystalline solids
Date:	2014-04-02
Issue Date:	2026-04-21 14:25:18 (UTC+8)
Publisher:	American Chemical Society;Washington,DC: American Chemical Society
Abstract:	摘要： Three homochiral metal-tryptophanate frameworks, {[Zn2(l-trp)2(bpe)2(H2O)2]·2H2O·2NO3} n (1a, l-Htrp = l-tryptophan, bpe = 1,2-bis(4-pyridyl)ethylene), {[Co(l-trp)(bpe)(H2O)]·H2O·NO3} n (1b), and {[Co(l-trp)(bpa)(H2O)]·H2O·NO3} n (2, bpa = 1,2-bis(4-pyridyl)ethane), were constructed from Zn2+ or Co2+ ions, bipyridyl ligands, and the amino acid l-tryptophan (l-Htrp), respectively. Compounds 1a, 1b, and 2 were characterized by single-crystal X-ray diffraction analysis. All of the compounds crystallize in the monoclinic space group P21 and form homochiral two-dimensional (2D) layers with rectangle-like (4,4) topologies. Anion-controlled dielectric, luminescence, and nonlinear-optic (NLO) properties were measured for these chiral metal–organic frameworks (MOFs) in the solid state. Emission spectra confirmed that compound 1a exhibited a green emission at 546 nm. Dielectric studies of 1a revealed that it had very low dielectric constant (κ = 2.53 at 1 MHz), thus verifying that it is a promising candidate for interlayer dielectrics. The anion-controlled dielectric properties of 1a were observed after treatment with solutions of different anions. The results revealed a significant change in κ value in the case of the phosphate anion. Secondary harmonic generation (SHG) studies revealed that 1a had a good SHG intensity response that was about twice that of SiO2. 其他題名： Cryst. Growth Des 出版者： Washington,DC: American Chemical Society 出版日期： 2014-04-02 出處： Crystal growth & design, 2014-04, Vol.14 (4), p.1572-1579 資源來源： American Chemical Society Journals 版權： Copyright © 2014 American Chemical Society 版權： 2015 INIST-CNRS 識別號： ISSN: 1528-7483 識別號： EISSN: 1528-7505 識別號： DOI: 10.1021/cg401472k
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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