Ming-Yan Wu

Control the Structure of Zr-Tetracarboxylate Frameworks through Steric Tuning

Co-reporter:Jiandong Pang, Shuai Yuan, Junsheng Qin, Caiping Liu, Christina Lollar, Mingyan Wu, Daqiang Yuan, Hong-Cai Zhou, and Maochun Hong

Journal of the American Chemical Society November 22, 2017 Volume 139(Issue 46) pp:16939-16939

Publication Date(Web):October 26, 2017

DOI:10.1021/jacs.7b09973

Ligands with flexible conformations add to the structural diversity of metal–organic frameworks but, at the same time, pose a challenge to structural design and prediction. Representative examples include Zr-tetracarboxylate-based MOFs, which afford assorted structures for a wide range of applications, but also complicate the structural control. Herein, we systematically studied the formation mechanism of a series of (4,8)-connected Zr-tetracarboxylate-based MOFs by altering the substituents on different positions of the organic linkers. Different ligand rotamers give rise to three types of structures with flu, scu, and csq topologies. A combination of experiment and molecular simulation indicate that the steric hindrance of the substituents at different positions dictates the resulting MOF structures. Additionally, the controllable formation of different structures was successfully implemented by a combination of linkers with different steric effects at specific positions.

Flexible Zirconium MOFs as Bromine-Nanocontainers for Bromination Reactions under Ambient Conditions

Co-reporter:Dr. Jiong Pang;Shuai Yuan;Dr. Dongying Du;Christina Lollar;Dr. Liangliang Zhang;Dr. Mingyan Wu;Dr. Daqiang Yuan; Dr. Hong-Cai Zhou; Dr. Maochun Hong

Angewandte Chemie International Edition 2017 Volume 56(Issue 46) pp:14622-14626

Publication Date(Web):2017/11/13

DOI:10.1002/anie.201709186

AbstractA series of flexible MOFs (PCN-605, PCN-606, and PCN-700) are synthesized and applied to reversible bromine encapsulation and release. The chemical stability of these Zr-MOFs ensures the framework's integrity during the bromine adsorption, while the framework's flexibility allows for structural adaptation upon bromine uptake to afford stronger host–guest interactions and therefore higher bromine adsorption capacities. The flexible MOFs act as bromine-nanocontainers which elongate the storage time of volatile halides under ambient conditions. Furthermore, the bromine pre-adsorbed flexible MOFs can be used as generic bromine sources for bromination reactions giving improved yields and selectivities under ambient conditions when compared with liquid bromine.

Selective CO2 Capture and High Proton Conductivity of a Functional Star-of-David Catenane Metal–Organic Framework

Co-reporter:You-Gui Huang;Shu-Qi Wu;Wei-Hua Deng;Gang Xu;Fa-Lu Hu;Jonathan P. Hill;Wei Wei;Sheng-Qun Su;Lok Kumar Shrestha;Osamu Sato;Mao-Chun Hong;Katsuhiko Ariga

Advanced Materials 2017 Volume 29(Issue 42) pp:

Publication Date(Web):2017/11/01

DOI:10.1002/adma.201703301

AbstractNetwork structures based on Star-of-David catenanes with multiple superior functionalities have been so far elusive, although numerous topologically interesting networks are synthesized. Here, a metal–organic framework featuring fused Star-of-David catenanes is reported. Two triangular metallacycles with opposite handedness are triply intertwined forming a Star-of-David catenane. Each catenane fuses with its six neighbors to generate a porous twofold intercatenated gyroid framework. The compound possesses exceptional stability and exhibits multiple functionalities including highly selective CO2 capture, high proton conductivity, and coexistence of slow magnetic relaxation and long-range ordering.

Syntheses, structures, luminescence and magnetic properties of three high-nuclearity neodymium compounds based on mixed sulfonylcalix[4]arene-phosphonate ligands

Co-reporter:Kongzhao Su, Feilong Jiang, Mingyan Wu, Jinjie Qian, Jiandong Pang, Daqiang Yuan and Maochun Hong

CrystEngComm 2016 vol. 18(Issue 26) pp:4921-4928

Publication Date(Web):02 Mar 2016

DOI:10.1039/C6CE00092D

Three attractive high-nuclearity neodymium compounds, namely, [Nd10(BSC4A)4(MePO3)4(Cl)2(OH)4(H2O)2(DMF)8(MeOH)2]·3DMF·7CH3OH (1), [Nd11(BSC4A)3(PhPO3)6(Cl)2(OH)6(DMF)12]Cl·7DMF·2CH3OH (2) and [Nd19(BSC4A)5(PhPO3)5(CO3)6(HCOO)7(OH)8(H2O)7(DMF)12]·11DMF·14CH3OH (3), have been solvothermally prepared based on p-tert-butylsulfonylcalix[4]arene (H4BSC4A) and methylphosphonic acid (MePO3H2)/phenylphosphonic acid (PhPO3H2) ligands. Structural analyses reveal that compound 1 features an oval-shaped Nd10 core, where two neodymium ions are in a large 16-membered wheel with –[Nd–O]– repeating units. Compound 2 displays a novel rugby-like Nd11 nanocage housing two μ4-Cl anions, while compound 3 has a large irregular Nd19 core paneled by unexpected carbonato and formate anions generated in situ and represents the highest-nuclearity lanthanide cluster based on the H4BSC4A ligand to date. In addition, the near-infrared luminescence (NIR) and magnetic behaviors of all the title compounds are also investigated.

Visualizing the Dynamics of Temperature- and Solvent-Responsive Soft Crystals

Co-reporter:Jiong Pang;Dr. Caiping Liu;Dr. Yougui Huang; Mingyan Wu; Feilong Jiang; Daqiang Yuan;Falu Hu;Dr. Kongzhao Su;Guoliang Liu; Maochun Hong

Angewandte Chemie 2016 Volume 128( Issue 26) pp:7604-7608

Publication Date(Web):

DOI:10.1002/ange.201603030

Abstract

We demonstrate that three flexible MOFs termed FJI-H11-R (FJI-H=Hong's group in Fujian Institute of Research on the Structure of Matter, R=Me, Et, ⁱPr) can reversibly respond to temperature and solvents via structural transformations, which can be visualized by in situ single-crystal X-ray snapshot analyses. FJI-H11-R exhibit colossal anisotropic thermal expansion, with a record-high uniaxial positive thermal-expansion coefficient of 653.2×10⁻⁶ K⁻¹ observed in FJI-H11-Me. Additionally, large c-axial shrinkage of 32.4 % is also observed during desolvation. The stimuli-responsive mechanism reveals the structural evolutions are related to the rotations and deformations of the organic linkers.

Visualizing the Dynamics of Temperature- and Solvent-Responsive Soft Crystals

Co-reporter:Jiong Pang;Dr. Caiping Liu;Dr. Yougui Huang; Mingyan Wu; Feilong Jiang; Daqiang Yuan;Falu Hu;Dr. Kongzhao Su;Guoliang Liu; Maochun Hong

Angewandte Chemie International Edition 2016 Volume 55( Issue 26) pp:7478-7482

Publication Date(Web):

DOI:10.1002/anie.201603030

Abstract

We demonstrate that three flexible MOFs termed FJI-H11-R (FJI-H=Hong's group in Fujian Institute of Research on the Structure of Matter, R=Me, Et, ⁱPr) can reversibly respond to temperature and solvents via structural transformations, which can be visualized by in situ single-crystal X-ray snapshot analyses. FJI-H11-R exhibit colossal anisotropic thermal expansion, with a record-high uniaxial positive thermal-expansion coefficient of 653.2×10⁻⁶ K⁻¹ observed in FJI-H11-Me. Additionally, large c-axial shrinkage of 32.4 % is also observed during desolvation. The stimuli-responsive mechanism reveals the structural evolutions are related to the rotations and deformations of the organic linkers.

Stable porphyrin Zr and Hf metal–organic frameworks featuring 2.5 nm cages: high surface areas, SCSC transformations and catalyses

Co-reporter:Jun Zheng, Mingyan Wu, Feilong Jiang, Weiping Su and Maochun Hong

Chemical Science 2015 vol. 6(Issue 6) pp:3466-3470

Publication Date(Web):31 Mar 2015

DOI:10.1039/C5SC00213C

Two isostructural porphyrin Zr and Hf metal–organic frameworks (FJI-H6 and FJI-H7) are rationally synthesized, and are constructed from 2.5 nm cubic cages. Notably, they both possess high water and chemical stability and can undergo single-crystal to single-crystal transformations to embed Cu2+ ions into the open porphyrin rings. FJI-H6 has a high BET surface area of 5033 m2 g−1. Additionally, they exhibit promising catalytic abilities to convert CO2 and epoxides into cyclic carbonates at ambient conditions.

Magnetic Properties of 3D Heptanuclear Lanthanide Frameworks Supported by Mixed Ligands

Co-reporter:Fa-Lu Hu, Fei-Long Jiang, Jun Zheng, Ming-Yan Wu, Jian-Dong Pang, and Mao-Chun Hong

Inorganic Chemistry 2015 Volume 54(Issue 13) pp:6081-6083

Publication Date(Web):June 22, 2015

DOI:10.1021/acs.inorgchem.5b00917

Two 3D lanthanide frameworks, [Ln7(DPA)5(NA)3(μ3-OH)8(H2O)3]·2.5H2O [H2DPA = diphenic acid; HNA = nicotinic acid; Ln = Gd (1), Dy (2)], were synthesized and structurally characterized. They were rarely seen examples of 3D frameworks constructed from heptanuclear trigonal-antiprismatic lanthanide clusters with mixed H2DPA and HNA ligands. Both 1 and 2 show typical antiferromagnetic interactions. Additionally, complex 1 possesses a large magnetocaloric effect of 34.15 J kg–1 K–1.

SO42− anion directed hexagonal-prismatic cages via cooperative C–H⋯O hydrogen bonds

Co-reporter:Jiandong Pang, Feilong Jiang, Daqiang Yuan, Jun Zheng, Mingyan Wu, Guoliang Liu, Kongzhao Su and Maochun Hong

Chemical Science 2014 vol. 5(Issue 11) pp:4163-4166

Publication Date(Web):18 Jul 2014

DOI:10.1039/C4SC01973C

Hexagonal-prismatic cages are constructed from cubane-like Ni4(μ3-OH)4 clusters generated in situ and clip-like organic ligands. The SO42− anions act as the template for the formation of the above cages via weak cooperative C–H⋯O hydrogen bonds. Further research shows that three internal hydrogen atoms of the bib ligand or its derivatives are necessary because they are all involved in the cooperative C–H⋯O hydrogen bonding with the captured SO42− anions. More importantly, not only the size and shape but also the charge of the SO42− anions dominates the formation of the cages.

Coexistence of cages and one-dimensional channels in a porous MOF with high H2 and CH4 uptakes

Co-reporter:Jiandong Pang, Feilong Jiang, Mingyan Wu, Daqiang Yuan, Kang Zhou, Jinjie Qian, Kongzhao Su and Maochun Hong

Chemical Communications 2014 vol. 50(Issue 22) pp:2834-2836

Publication Date(Web):10 Dec 2013

DOI:10.1039/C3CC48381A

A porous metal–organic framework with high surface area was designedly synthesized, in which polyhedral cages and one-dimensional channels coexist. It shows a total gravimetric H2 uptake of 11.35 wt% at 77 K and 90 bar and a total CH4 uptake of 305.07 cm3 g−1 at 298 K and 35 bar.

Stable porphyrin Zr and Hf metal–organic frameworks featuring 2.5 nm cages: high surface areas, SCSC transformations and catalyses

Co-reporter:Jun Zheng, Mingyan Wu, Feilong Jiang, Weiping Su and Maochun Hong

Chemical Science (2010-Present) 2015 - vol. 6(Issue 6) pp:NaN3470-3470

Publication Date(Web):2015/03/31

DOI:10.1039/C5SC00213C

Two isostructural porphyrin Zr and Hf metal–organic frameworks (FJI-H6 and FJI-H7) are rationally synthesized, and are constructed from 2.5 nm cubic cages. Notably, they both possess high water and chemical stability and can undergo single-crystal to single-crystal transformations to embed Cu2+ ions into the open porphyrin rings. FJI-H6 has a high BET surface area of 5033 m2 g−1. Additionally, they exhibit promising catalytic abilities to convert CO2 and epoxides into cyclic carbonates at ambient conditions.

SO42− anion directed hexagonal-prismatic cages via cooperative C–H⋯O hydrogen bonds

Co-reporter:Jiandong Pang, Feilong Jiang, Daqiang Yuan, Jun Zheng, Mingyan Wu, Guoliang Liu, Kongzhao Su and Maochun Hong

Chemical Science (2010-Present) 2014 - vol. 5(Issue 11) pp:NaN4166-4166

Publication Date(Web):2014/07/18

DOI:10.1039/C4SC01973C

Hexagonal-prismatic cages are constructed from cubane-like Ni4(μ3-OH)4 clusters generated in situ and clip-like organic ligands. The SO42− anions act as the template for the formation of the above cages via weak cooperative C–H⋯O hydrogen bonds. Further research shows that three internal hydrogen atoms of the bib ligand or its derivatives are necessary because they are all involved in the cooperative C–H⋯O hydrogen bonding with the captured SO42− anions. More importantly, not only the size and shape but also the charge of the SO42− anions dominates the formation of the cages.

Coexistence of cages and one-dimensional channels in a porous MOF with high H2 and CH4 uptakes

Co-reporter:Jiandong Pang, Feilong Jiang, Mingyan Wu, Daqiang Yuan, Kang Zhou, Jinjie Qian, Kongzhao Su and Maochun Hong

Chemical Communications 2014 - vol. 50(Issue 22) pp:NaN2836-2836

Publication Date(Web):2013/12/10

DOI:10.1039/C3CC48381A

A porous metal–organic framework with high surface area was designedly synthesized, in which polyhedral cages and one-dimensional channels coexist. It shows a total gravimetric H2 uptake of 11.35 wt% at 77 K and 90 bar and a total CH4 uptake of 305.07 cm3 g−1 at 298 K and 35 bar.

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Abstract

Abstract