2089016-10-2Relevant academic research and scientific papers
Multifunctional Zinc Metal-Organic Framework Based on Designed H4TCPP Ligand with Aggregation-Induced Emission Effect: CO2 Adsorption, Luminescence, and Sensing Property
Jiang, Yangyang,Sun, Libo,Du, Jianfeng,Liu, Yuchuan,Shi, Huaizhong,Liang, Zhiqiang,Li, Jiyang
, p. 2090 - 2096 (2017)
A new rigid and symmetrical tetracarboxylic ligand 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine (H4TCPP) with aggregation-induced emission effect has been designed and synthesized. By using such a ligand, a novel multifunctional metal-organic framework Zn-TCPP has been successfully constructed. The cross-linkage of dinuclear Zn2(COO)4 clusters and organic TCPP4- ligands results in the three-dimensional channel structure of Zn-TCPP, which has a four connected lvt topology with the point symbol of {42.84}. Zn-TCPP not only displays bright blue luminescence arising from the matrix coordination-induced emission effect of the TCPP4- ligand, but also exhibits effective detection for picric acid and Fe3+ ions. In addition, the activated Zn-TCPP possesses a highly porous framework with a Brunauer-Emmett-Teller surface area of 984 m2 g-1 and CO2 adsorption capacity up to 135 cm3 g-1 at 273 K and 732 mmHg. This work represents a successful example of constructing metal-organic frameworks with desired functions based on the designed organic ligand.
Fabrication of (4, 10) and (4, 12)-Connected Multifunctional Zirconium Metal-Organic Frameworks for the Targeted Adsorption of a Guest Molecule
Zhang, Liangliang,Guo, Bingbing,He, Huihui,Zhang, Xiurong,Feng, Yang,Fan, Weidong,Cao, Junlong,Lu, Guang,Chen, Yanhui,Sun, Daofeng,Huang, Wei
, p. 695 - 704 (2020)
Following the principle of a topology guide, a zirconium MOF (PCN-207) based on the H4TPTA ligand (tetramethyl(4,4′,4″,4?-(pyrazine-2,3,5,6-tetrayl))tetrabenzoic acid) with C2 symmetry and an 8-connected Zr6(μ3-
Rotation Restricted Emission and Antenna Effect in Single Metal-Organic Frameworks
Yin, Hua-Qing,Wang, Xin-Yao,Yin, Xue-Bo
, p. 15166 - 15173 (2019)
Aggregation induced-emission (AIE) and antenna effects are important luminescence behaviors. Thus, investigating their emission mechanisms and revealing their behaviors have become critical but challenging. Here we design and prepare metal-organic framewo
Ultrastable Zirconium-Based Cationic Metal-Organic Frameworks for Perrhenate Removal from Wastewater
Zhang, Guoyu,Tan, Kui,Xian, Shikai,Xing, Kai,Sun, Hongbing,Hall, Gene,Li, Liangying,Li, Jing
, (2021/05/06)
The effective removal of radioactive 99TcO4- anion from nuclear wastewater remains a very difficult unsolved problem. Functional adsorbent materials with high stability, anion-exchange capacity, excellent selectivity, and recyclability are much needed to solve this problem. In this work, we designed two stable cationic metal-organic frameworks (MOFs) - Zr-tcbp-Me and Zr-tcpp-Me - for possible use as adsorbent materials to remove 99TcO4-. Both compounds were synthesized by solvothermal reactions of the tetracarboxylate ligand with zirconium salt, followed by postsynthetic modification (N-methylation). The crystallinity of both zirconium-based MOFs can be well retained under harsh conditions, and they exhibit high adsorption capacity and selectivity toward ReO4- anion, a nonradioactive analogue of 99TcO4-. Zr-tcbp-Me and Zr-tcpp-Me demonstrate the highest framework stability toward acidity among all previously reported cationic MOFs that have been tested for perrhenate removal from wastewater.
Cr2O72-inside Zr/Hf-based metal-organic frameworks: Highly sensitive and selective detection and crystallographic evidence
Huang, Yong-Liang,Li, Dan,Li, Yan Yan,Lu, Weigang,Luo, Dong,Wu, Kun,Zheng, Ji
, p. 16974 - 16983 (2020/12/30)
Herein, we report the synthesis of three pairs of isostructural zirconium- and hafnium-based homometallic metal-organic frameworks (MOFs, termed Zr-MOF-1 and Hf-MOF-1, Zr-MOF-2 and Hf-MOF-2, and Zr-MOF-3 and Hf-MOF-3) with respective scu, sqc, and flu top
Tetrakis(Oxadiazolylphenyl)pyrazines: New st. Andrew’s cross-shaped liquid crystals
R?der, Nico,Marszalek, Tomasz,Limbach, Daniel,Pisula, Wojciech,Detert, Heiner
, p. 463 - 469 (2019/06/03)
π-Conjugated molecules with the shape of St. Andrew’s cross have been synthesized via fourfold Huisgen reaction. Four 2,5- diaryl-1,3,4-oxadiazol arms are attached to a central pyrazine nucleus. These fluorescent stars, when decorated with a rim of eight alkoxy side chains are discotic liquid crystals. Depending on the substitution pattern, the width of the liquid phase varies within a broad range of 25°C to 250°C. In their liquid crystalline phase, the molecules assemble in a typical hexagonal columnar supramolecular arrangement.
STA-27, a porous Lewis acidic scandium MOF with an unexpected topology type prepared with 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine
Prasad, Ram R.R.,Seidner, Sarah E.,Cordes, David B.,Lozinska, Magdalena M.,Dawson, Daniel M.,Thompson, Megan J.,Düren, Tina,Chakarova, Kristina K.,Mihaylov, Mihail Y.,Hadjiivanov, Konstantin I.,Hoffmann, Frank,Slawin, Alexandra M.Z.,Ashbrook, Sharon E.,Clarke, Matthew L.,Wright, Paul A.
, p. 5685 - 5701 (2019/03/13)
A porous scandium MOF denoted STA-27 (St Andrews Porous Material-27) has been synthesised solvothermally using the 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine anion (TCPP4-) as the tetratopic carboxylate linker. STA-27 possesses a unique scandium-based 1D rod secondary building unit (SBU) comprising corner-sharing scandium Sc2O11 dimers connected via carboxylate groups from the linker. After activation under mild conditions STA-27 is an active Lewis acidic catalyst, while heating at elevated temperatures results in rupturing of the Sc-O-Sc linkages and a phase transition to a different topological type. Under similar synthesis conditions the smaller Al3+ and Ga3+ cations give isostructural MOFs with a different, previously reported, topology type based on chains of corner-sharing MO4(OH)2 octahedra: the Al-form possesses attractive properties for CO2 adsorption.
A multifunctional Zr(iv)-based metal-organic framework for highly efficient elimination of Cr(vi) from the aqueous phase
Liu, Junmin,Ye, Yu,Sun, Xiaodong,Liu, Bing,Li, Guanghua,Liang, Zhiqiang,Liu, Yunling
, p. 16833 - 16841 (2019/07/22)
A highly stable luminescent Zr(iv)-MOF, [Zr6O4(OH)8(H2O)4(TCPP)4]·9DMF·3.5H2O (JLU-MOF60, H4TCPP = 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine, DMF = N,N-dimethylformami
Tetrakis(oxadiazolylphenyl)pyrazines: New St. Andrew′s Cross-Shaped Liquid Crystals
Detert, Heiner,Limbach, Daniel,Marszalek, Tomasz,Pisula, Wojciech,R?der, Nico
, p. 463 - 469 (2019/01/09)
π-Conjugated molecules with the shape of St. Andrew′s cross have been synthesized via fourfold Huisgen reaction. Four 2,5-diaryl-1,3,4-oxadiazol arms are attached to a central pyrazine nucleus. These fluorescent stars, when decorated with a rim of eight alkoxy side chains are discotic liquid crystals. Depending on the substitution pattern, the width of the liquid phase varies within a broad range of 25 °C to 250 °C. In their liquid crystalline phase, the molecules assemble in a typical hexagonal columnar supramolecular arrangement.
