Hong-Bin Du

A photoluminescent microporous metal organic anionic framework for nitroaromatic explosive sensing

By using the octadentate ligand tetrakis[(3,5-dicarboxyphenoxy)methyl] methane (H8L), a rare (4,8)-scu type microporous coordination polymer, [In2L][NH2(CH3)2]2·(DMF)4(H2O)16, was synthesized and structurally characterized. The compound possesses an anionic three-dimensional open framework and exhibits permanent porosity with selective gas adsorption of CO2 over CH4. It exhibited strong fluorescence emission upon excitation at RT, and a selective, efficient emission quenching response towards nitroaromatic explosives.

A photoluminescent interpenetrating diamondoid metal–organic framework based on Cu4I4clusters with high thermal stability

A new, triply-interpenetrating diamondoid metal–organic framework, which exhibits strong photoluminescence at room temperature and high thermal stability, was prepared by the self-assembly of tetrahedral quadridentate linker tetrakis(4-pyridyloxymethylene)methane and tetrahedral Cu4I4clusters under solvothermal conditions.

An infinite photoluminescent coordination nanotube [CuSCN(L)]·(DMF)0.5

A novel, single-walled coordination nanotube [CuSCN(L)]·(DMF)0.5 (L = 1,3-di(pyridin-4-yl)propane, DMF = N,N-dimethylformamide) was easily prepared using two bidentate ligands and characterized by single crystal X-ray diffraction, which shows guest exchange properties and strong photoluminescence at room temperature.

A robust microporous metal–organic framework constructed from a flexible organic linker for acetylene storage at ambient temperature

By using an octadentate ligand tetrakis[(3,5-dicarboxyphenoxy)methyl] methane (H8L), a new microporous metal–organic framework [Cu4L(H2O)4](H2O)31 (1) was solvothermally synthesized and structurally characterized. MOF 1 is built from the 4-connected square planar [Cu2(O2CR)4] cluster and 8-connected cube ligand L to have a highly open framework with scu topology. It possesses permanent porosity as confirmed by N2, H2, C2H2, CO2 and CH4 gas adsorption measurements and exhibits high acetylene storage of 193 and 154 cm3 g−1 at 273 and 296 K under 1 atm, respectively.

A 3-dimensional coordination polymer with a fluorite structure constructed from a semi-rigid tetrahedral ligand

A new 3D coordination polymer was solvothermally synthesized, which possesses a fluorite network built from 8-connecting Co3 clusters and 4-connecting tetrahedral ligands, and exhibits ferromagnetic behaviour between the CoII ions.

Porous Coordination Polymers of Transition Metal Sulfides with PtS Topology Built on a Semirigid Tetrahedral Linker

Four novel porous metal sulfide coordination polymers, [M(tpom)S(x)(SH)(y)] x z(H(2)O) (metal-sulfide frameworks, denoted MSF-n, n = 1, Cd; 2, Mn; 3, Fe; 4, Co; x = 0, y = 2 for 1, 2, and 4 and x = 0.54, y = 1.46 for 3), were solvothermally prepared by using a quadridentate linker, tetrakis(4-pyridyloxymethylene)methane (tpom), in the presence of organic sulfur compound under an acidic conditions. MSF-n (n = 1-4) is isostructural and built upon the tetrahedral tpom linker and square planar MS(x)(SH)(y) unit, which form a binodal 4,4-connected porous framework with a 2-fold interpenetrated 4(2)8(4)-pts net. With rectangular pore channels of about 5 x 6 A(2) (interatomic distances between the nearest protruding H atoms across) running along both the crystallographic a and b directions, MSF-n possesses permanent porosity with a BET surface area of 575, 622, 617, and 767 m(2)/g for MSF-1, -2, -3, and -4, respectively, as estimated from N(2) adsorption measurements. MSF-n (n = 1-4) has hydrogen storage capacities of 1.03, 1.37, 1.29, and 1.58 wt % at 77 K and 1 atm, respectively, each corresponding to 2.0 H(2) molecules per unit cell. In addition, MSF-n (n = 1-4) can adsorb 24.1, 25.0, 21.6, and 24.1 wt % of carbon dioxide and 6.0, 6.1, 5.6, and 6.4 wt % of methane, respectively, at room temperature and 20 atm.

Preparation by microwave irradiation of nanometre-sized AlPO4-5 molecular sieve

The influence of the synthesis conditions on the crystallization and crystal size of AlPO 4 -5 molecular sieve is investigated in a (TEA) 2 O–Al 2 O 3 –P 2 O 5 –H 2 O system. The initial mixture composition and the crystallization method affect the crystallization and the crystal size of the product. Microwave heating of the synthesis mixture results in the formation of AlPO 4 -5 with nanometre-sized particles.

Rational synthesis of a microporous metal–organic framework with PtS topology using a semi-rigid tetrahedral linker

The assembly of a semi-rigid tetrahedral linker tetrakis[4-(carboxyphenyl)oxamethyl]methane acid (H4X) with CuII yields a binodal 4,4-connected coordination framework of distorted PtS topology, which exhibits permanent porosity confirmed by gas adsorption experiments of N2, H2, CO2, and CH4.

An Extra‐Large‐Pore Zeolite with Intersecting 18‐, 12‐, and 10‐Membered Ring Channels

Zeolites with extra-large pores have attracted great attention because of their important applications such as in hydrocracking, catalysis, and separation of large molecules. Despite much progress has been made during the past decades, the synthesis of these materials remains a big challenge. A new extra-large-pore zeolite NUD-1 (Nanjing University Dus group zeolite no. 1) is synthesized by using an approach based on supramolecular self-assemblies of small aromatic organic cations as structure-directing agents. NUD-1 possesses interconnecting 18-, 12-, and 10-membered ring channels, built from the same building units as those of ITQ-33 and ITQ-44. There coexist single 3-membered ring, double-3-membered ring and double-4-membered ring secondary building units in NUD-1, which have not been seen in any other zeolites.

A 4-connected 3D porous coordination polymer with a binodal 6284 net built on tetrahedral quadridentate and bidentate linkers

An unprecedented 4-connected metal–organic framework [Zn2(tpom)(bdc)2]·2H2O (tpom = tetrakis(4-pyridyloxymethylene)methane, bdc = benzene-1,4-dicarboxylic acid) with a binodal 6284 net has been solvothermally synthesized from the assembly of a semirigid tetrahedral ligand (tpom) and a rigid linear bidentate ligand (bdc). The network of 1 is constructed by tetrahedrally connected tpom ligands and metal sites, in which 1D chains [Zn(bdc)]n interweave 2D diamondlike sheets [Zn2(tpom)]n into a 3D porous framework with a binodal 6284 net. 1 has a relatively high thermal stability and exhibits permanent porosity.