Anqing Teachers College

About: Anqing Teachers College is a education organization based out in Anking, China. It is known for research contribution in the topics: Adsorption & Coordination polymer. The organization has 1608 authors who have published 1484 publications receiving 13498 citations.

Five 3D metal–organic frameworks constructed from V-shaped polycarboxylate acids and flexible imidazole-based ligands

Abstract: Five new metal–organic frameworks, namely, Cd2(SA)(obix) (1), Zn2(SA)(bimb) (2), Cd(SDBA)(timb)·3H2O (3), Co(SDBA)(bimb) (4), and Co(SDBA)(obix) (5) (H4SA = 3,3′,4,4′-diphenylsulfonetetracarboxylate acid, H2SDBA = 4,4′-dicarboxybiphenyl-sulfone, obix = 1,2-bis(imidazol-1-ylmethyl)benzene, timb = 1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene and bimb = 4,4′-bis(imidazol-1-ylmethyl)biphenyl), have been synthesized under hydrothermal conditions by employing mixed ligands of various imidazole-based ligands with H4SA or H2SDBA. The networks exhibit a variety of topologies and coordination modes at the metal centers. Complex 1 features a novel (5,7)-connected seh net consisting of one-dimensional inorganic chains which are bridged by carboxylate groups of SA4− ligands, whereas complex 2 possesses a unique 4-connected 3D framework with (62·82·102)(62·83·10)(62·83·9) topology. Complex 3 exhibits a rare (3,5)-connected 3D framework with gra topology. Complex 4 shows 4-connected MOFs with (65·8) CdSO4-type topology, while in 5, the SDBA and obix ligands linked the Co(II) atoms into a deeply corrugated 2D sheet. The corrugated 2D sheets polycatenate each other in a parallel manner yielding a rare 2D → 3D parallel polycatenation net. The photoluminescence properties of 1–3 were studied in the solid state at room temperature. Moreover, the second-harmonic-generation (SHG) activity of 2–5 have also been investigated.

Dual-functional MoS2 sheet-modified CdS branch-like heterostructures with enhanced photostability and photocatalytic activity

Abstract: CdS/MoS2 heterostructures with a branch-like morphology have been prepared via a one-pot hydrothermal method. The as-prepared CdS/MoS2 heterostructures exhibited enhanced photocatalytic activity and photostability for the degradation of organic dyes. It is believed that the 2D MoS2 sheets supporting CdS form a large number of interfaces, which may significantly increase the separation of electron/hole pairs, thus greatly enhancing the photocatalytic activity. On the other hand, the matched energy bands of the CdS/MoS2 heterostructure also allow hole transfer from CdS to MoS2, thus reducing CdS corrosion.

Turning Au Nanoclusters Catalytically Active for Visible-Light-Driven CO2 Reduction through Bridging Ligands

Abstract: Development of visible-light photocatalytic materials is an ultimate goal for solar-driven CO2 conversion. Au nanoclusters (NCs) may potentially serve as components for harvesting visible light but can hardly perform solar-driven CO2 reduction due to the lack of catalytic sites. Herein, we report an effective strategy for turning Au nanoclusters catalytically active for visible-light CO2 reduction, in which metal cations (Fe2+, Co2+, Ni2+, and Cu2+) are grafted to the Au NCs using l-cysteine as a bridging ligand. The metal-S bonding bridge facilitates the electron transfer from Au NCs to metal cations so that the grafted metal cations can receive photoinduced electrons and work as catalytic sites for CO2 reduction. The varied d-band centers and binding energies with CO2 for different metal cations allow tuning electron transfer efficiency and CO2 activation energy. Furthermore, the photostability of Au NCs-based catalyst can be significantly enhanced through the encapsulation with metal-organic frameworks. This work opens a new door for the photocatalyst design based on metal clusters and sheds light on the surface engineering of metal clusters toward specific applications.

A Spin‐Crossover Cluster of Iron(II) Exhibiting a Mixed‐Spin Structure and Synergy between Spin Transition and Magnetic Interaction

Abstract: Ein selbstorganisiertes FeII4-Quadrat zeigt sowohl einen thermischen als auch einen lichtinduzierten Ubergang zwischen einem Zustand mit vier High-Spin(HS)-Zentren und einem Zustand mit je zwei benachbarten High-Spin- und Low-Spin(LS)-Zentren. Der Spinubergang ist mit den magnetischen Wechselwirkungen gekoppelt (siehe Bild).