Taiyuan University of Technology

About: Taiyuan University of Technology is a education organization based out in Taiyuan, China. It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 19027 authors who have published 16996 publications receiving 194715 citations. The organization is also known as: TUT & TYUT.

A Tale of Two Trimers from Two Different Worlds: A COF-Inspired Synthetic Strategy for Pore-Space Partitioning of MOFs.

Abstract: The introduction of a symmetry- and size-matching pore-partitioning agent in the form of either a molecular ligand, such as 2,4,6-tri(4-pyridinyl)-1,3,5-triazine (tpt), or a metal-complex cluster, into the hexagonal channels of MIL-88/MOF-235-type (the acs net) to create pacs-type (partitioned acs) crystalline porous materials is an effective strategy to develop high-performance gas adsorbents. We have developed an integrated COF-MOF coassembly strategy as a new method for pore-space partitioning through the coassembly of [(M3 (OH)1-x (O)x (COO)6 ] MOF-type and [B3 O3 (py)3 ] COF-type trimers. With this strategy, the coordination-driven assembly of the acs framework occurred concurrently and synergistically with the COF-1-type condensation of pyridine-4-boronic acid into a C3 -symmetric trimeric boroxine molecule. The resulting boroxine-based pacs materials exhibited dramatically enhanced gas-sorption properties as compared to nonpartitioned acs-type materials and are among the most efficient NH3 -sorption materials.

Highly efficient blue phosphorescent iridium(III) complexes with various ancillary ligands for partially solution-processed organic light-emitting diodes

Abstract: One homoleptic facial and five novel highly efficient blue heteroleptic iridium(III) complexes were designed and synthesized by selecting 2-(4-fluoro-3-(trifluoromethyl)phenyl)pyridine as cyclometalated ligands and 2,4-pentanedione, 2-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl)pyridine, picolinic acid, 2-(1H-imidazol-2-yl)pyridine and 2-(1H-tetrazol-5-yl)pyridine as ancillary ligands, respectively. The alternation of ancillary ligands could finely tune the photophysical properties of the phenylpyridine-based complexes, particularly with respect to emission wavelength, photoluminescence quantum yield (ΦPL), full width at half maximum (FWHM), etc. The phosphors designed not only exhibit excellent solubility in commonly used solvents with robust chemical stability but also show bright emissions in the pure blue region with very high absolute ΦPL up to 0.98 in solution and relatively narrow FWHMs up to 52 nm. Furthermore, based on these highly efficient blue phosphors, high-performance partially solution-processed blue organic light-emitting diodes have been successfully fabricated. The electroluminescence peak, 1931 Commission Internationale de L’Eclairage coordinate and FWHM of the device based on Ir4 are all superior to the device based on FIrpic. In addition, the maximum efficiencies of the device based on Ir4 (21.15 cd A−1, 12.07 lm W−1) are also higher than those of the device based on FIrpic (18.89 cd A−1, 11.26 lm W−1) under the same conditions.