scholarly journals Single Crystals Heterogeneity Impacts the Intrinsic and Extrinsic Properties of Metal–Organic Frameworks

2021 ◽  
pp. 2104530
Author(s):  
Adrian Fuchs ◽  
Petra Mannhardt ◽  
Patrick Hirschle ◽  
Haoze Wang ◽  
Irina Zaytseva ◽  
...  
Keyword(s):  
Single Crystals ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Extrinsic Properties

Stitching 2D Polymeric Layers into Flexible Interpenetrated Metal-Organic Frameworks within Single Crystals

2014 ◽  
Vol 126 (18) ◽  
pp. 4716-4720 ◽  
Author(s):  
Zi-Xuan Zhang ◽  
Ni-Ni Ding ◽  
Wen-Hua Zhang ◽  
Jin-Xiang Chen ◽  
David J. Young ◽  
...  
Keyword(s):  
Single Crystals ◽  
Metal Organic Frameworks ◽  
Metal Organic

Pure white-light and yellow-to-blue emission tuning in single crystals of Dy(iii) metal–organic frameworks

2014 ◽  
Vol 50 (57) ◽  
pp. 7702-7704 ◽  
Author(s):  
Qing-Yuan Yang ◽  
Kai Wu ◽  
Ji-Jun Jiang ◽  
Chien-Wei Hsu ◽  
Mei Pan ◽  
...  
Keyword(s):  
Single Crystals ◽  
White Light ◽  
Single Phase ◽  
Metal Organic Frameworks ◽  
Blue Emission ◽  
Color Tunable ◽  
Metal Organic ◽  
Pure White

An alternative way to use homogeneous Ln-MOFs as single-phase white-light and color-tunable phosphors has been achieved by assembly of Dy(iii)-MOF.

scholarly journals Single Crystals of Electrically Conductive 2D MOFs: Structural and Electrical Transport Properties

2019 ◽  
Author(s):  
Robert W. Day ◽  
D. Kwabena Diako ◽  
Mehdi Rezaee ◽  
Lucas R. Parent ◽  
Grigorii Skorupskii ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Electrical Transport ◽  
Prolonged Exposure ◽  
Metal Organic Frameworks ◽  
Two Dimensions ◽  
Conductivity Measurements ◽  
Electrical Transport Properties ◽  
Electrically Conductive ◽  
Metal Organic

Crystalline, electrically conductive, and intrinsically porous materials are rare. Layered 2D metal-organic frameworks (MOFs) break this trend. They are porous crystals that exhibit high electrical conductivity and are novel platforms for studying fundamentals of electricity and magnetism in two dimensions.1-8 Despite demonstrated applications,9-13 electrical transport in these remains poorly understood because of a lack of single crystal studies. Here, studies of single crystals of two 2D MOFs, Ni3(HITP)2 and Cu3(HHTP)2, uncover critical insights into their structure and transport. Conductivity measurements down to 0.3 K suggest metallicity for mesoscopic single crystals of Ni3(HITP)2, which contrasts with apparent activated conductivity for polycrystalline films. Microscopy studies further reveal that these MOFs are not isostructural as previously reported.14 Notably, single rods exhibit conductivities up to 150 S/cm, which persist even after prolonged exposure to the ambient. These single crystal studies confirm that 2D MOFs hold promise as molecularly tunable platforms for fundamental science and applications where porosity and conductivity are critical.<br>

scholarly journals Large Single Crystals of Two-Dimensional π-Conjugated Metal–Organic Frameworks via Biphasic Solution-Solid Growth

2020 ◽  
Author(s):  
Dong-Gwang Ha ◽  
Mehdi Rezaee ◽  
Yimo Han ◽  
Saima A. Siddiqui ◽  
Robert W. Day ◽  
...  
Keyword(s):  
Single Crystals ◽  
Metal Organic Frameworks ◽  
Two Dimensional ◽  
Metal Organic

Uniform and directional growth of centimeter-sized single crystals of cyclodextrin-based metal organic frameworks

CrystEngComm ◽  
2019 ◽  
Vol 21 (12) ◽  
pp. 1867-1871 ◽  
Author(s):  
Namhun Kim ◽  
Jun Heuk Park ◽  
Jan Paczesny ◽  
Bartosz A. Grzybowski
Keyword(s):  
Information Processing ◽  
Single Crystals ◽  
Metal Organic Frameworks ◽  
Optoelectronic Devices ◽  
Chromatographic Separations ◽  
Directional Growth ◽  
Metal Organic

Although macroscopically-sized MOF crystals have proven of interest for efficient chromatographic separations, information processing, or optoelectronic devices, growing really large crystals has proven problematic. A growth-and-reseeding method can now produce MOF monocrystals ca. 1 cm3 in volume vs. at most ca. 0.025 cm3 by prior methods.

scholarly journals Anisotropic Band-Edge Absorption of Millimeter-Size Zn(3-Ptz)2 Single Crystal Metal-Organic Frameworks

2020 ◽  
Author(s):  
Ignacio Chi-Duran ◽  
Ruben Fritz ◽  
Vanessa Olaya ◽  
Rodrigo Urzua-Leiva ◽  
Gloria I. Cárdenas-Jirón ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystals ◽  
Density Functional ◽  
Metal Organic Frameworks ◽  
Band Edge ◽  
Large Individual ◽  
Visible Absorption ◽  
Thermal Synthesis ◽  
High Optical Quality ◽  
Metal Organic

<div><div><div><p>Metal-organic frameworks (MOF) have emerged as promising tailor-design materials for developing next-generation solid-state devices with applications in linear and non-linear coherent optics. However, the implementation of functional devices is challenged by the notoriously difficult process of growing large MOF single-crystals of high optical quality. By controlling the solvo-thermal synthesis conditions, we succeed in producing large individual single crystals of the non-centrosymmetric MOF Zn(3-ptz)2 (MIRO-101) with deformed octahedron habit, and unprecedented surface areas of up to 37 mm<sup>2</sup>. We measure the polarized UV-visible absorption spectrum of individual Zn(3- ptz)2 single crystals across different lateral incidence planes. Millimeter size single crystals have band gap <i>E</i><i>g</i> = 3.32 eV, and exhibit anisotropic absorption in the band edge region near 350 nm, whereas polycrystalline samples are fully transparent in the same frequency range. Using solid-state density functional theory (DFT), the observed size dependence of the optical anisotropy is correlated with the preferred orientation adopted by freely rotating pyridyl groups under conditions of slow crystal self-assembly. Our work thus paves the way for the development of optical polarization switches based on metal-organic frameworks.</p></div></div></div>

scholarly journals Anisotropic Band-Edge Absorption of Millimeter-Size Zn(3-Ptz)2 Single Crystal Metal-Organic Frameworks

2020 ◽  
Author(s):  
Ignacio Chi-Duran ◽  
Ruben Fritz ◽  
Vanessa Olaya ◽  
Rodrigo Urzua-Leiva ◽  
Gloria I. Cárdenas-Jirón ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystals ◽  
Density Functional ◽  
Metal Organic Frameworks ◽  
Band Edge ◽  
Large Individual ◽  
Visible Absorption ◽  
Thermal Synthesis ◽  
High Optical Quality ◽  
Metal Organic

<div><div><div><p>Metal-organic frameworks (MOF) have emerged as promising tailor-design materials for developing next-generation solid-state devices with applications in linear and non-linear coherent optics. However, the implementation of functional devices is challenged by the notoriously difficult process of growing large MOF single-crystals of high optical quality. By controlling the solvo-thermal synthesis conditions, we succeed in producing large individual single crystals of the non-centrosymmetric MOF Zn(3-ptz)2 (MIRO-101) with deformed octahedron habit, and unprecedented surface areas of up to 37 mm<sup>2</sup>. We measure the polarized UV-visible absorption spectrum of individual Zn(3- ptz)2 single crystals across different lateral incidence planes. Millimeter size single crystals have band gap <i>E</i><i>g</i> = 3.32 eV, and exhibit anisotropic absorption in the band edge region near 350 nm, whereas polycrystalline samples are fully transparent in the same frequency range. Using solid-state density functional theory (DFT), the observed size dependence of the optical anisotropy is correlated with the preferred orientation adopted by freely rotating pyridyl groups under conditions of slow crystal self-assembly. Our work thus paves the way for the development of optical polarization switches based on metal-organic frameworks.</p></div></div></div>

Modulated Synthesis of Zr-Based Metal-Organic Frameworks: From Nano to Single Crystals

2011 ◽  
Vol 17 (24) ◽  
pp. 6643-6651 ◽  
Author(s):  
Andreas Schaate ◽  
Pascal Roy ◽  
Adelheid Godt ◽  
Jann Lippke ◽  
Florian Waltz ◽  
...  
Keyword(s):  
Single Crystals ◽  
Metal Organic Frameworks ◽  
Metal Organic
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