Search

Your search keyword '"Wong-Foy, Antek G."' showing total 26 results
Start Over Author "Wong-Foy, Antek G." Publication Year Range Last 10 years
26 results on '"Wong-Foy, Antek G."'

12. Metal-Dependent Phase Selection in Coordination Polymers Derived from a C2v-Symmetric Tricarboxylate

Author

Lim, Choong-Sun, Schnobrich, Jennifer K., Wong-Foy, Antek G., and Matzger, Adam J.

Abstract

Reacting biphenyl-3,4′,5-tricarboxylic acid (H3BHTC) with the appropriate metal salt yields the microporous coordination polymers (MCPs) Mn3(BHTC)2(1), Mg3(BHTC)2(2), and Co3(BHTC)2(3) containing hourglass metal clusters. The addition of Cu to reactions with CoII, FeIII, or MnIIleads to the formation of heterobimetallic UMCM-150 isostructural analogues Co1Cu2(BHTC)2(4), Fe1Cu2(BHTC)2(5), and Mn1Cu2(BHTC)2(6) containing both paddlewheel and trinuclear metal clusters. X-ray diffraction analysis of the crystals of the heterobimetallic MCPs suggests that Cu on the trinuclear site of UMCM-150 was replaced by the other metal, whereas Cu in paddlewheel sites remains unchanged. N2sorption isotherms were measured for the mixed-metal UMCM-150 analogues, and it was confirmed that there is no structural collapse after the metal replacement.

Published
2024
Full Text
View/download PDF

13. Nonlinear Properties in Coordination Copolymers Derived from Randomly Mixed Ligands

Author

Park, Tae-Hong, Koh, Kyoungmoo, Wong-Foy, Antek G., and Matzger, Adam J.

Abstract

Random copolymerization is a core strategy of the polymer industry, enabling broad tuning of materials properties through mixing monomers with similar reactivities. In coordination polymers, analogous results have recently been achieved using combinations of isomorphic linkers copolymerized by appropriate metals; in general, the properties of the resultant coordination copolymers can be described as a linear combination of the properties of the constituent building blocks. Here we demonstrate that this need not be the case: coordination copolymerization is a powerful strategy for directing phase formation. For example, reaction of 1,4-benzenedicarboxylic acid with Zn2+typically affords phase-impure material in N,N-dimethylformamide whereas using an amino functionalized linker leads to pure high surface area material with the structure of MOF-5. However, mixed-linker copolymers derived from a combination of both linkers display surface areas comparable to that of MOF-5 synthesized in N,N-diethylformamide, indicating that even a minor linker component can direct phase selection. In a second illustration, the pore blockage of the bulky group in 9,10-bis(triisopropylsilyloxy)phenanthrene-2,7-dicarboxylate (TPDC) not only suppresses the framework interpenetration of biphenyl-based IRMOF architectures but also blocks adsorption sites, yielding a low surface area material. However, the random coordination copolymerization of Zn2+with a mixture of TPDC and 3,3′,5,5′-tetramethyl-4,4′-biphenyldicarboxylate (Me4BPDC) controls the level of framework interpenetration and the degree of pore blockage, resulting in higher surface area (up to ∼3000 m2/g) copolymers than the noninterpenetrated Zn4O(TPDC)3and interpenetrated Zn4O(Me4BPDC)3frameworks.

Published
2024
Full Text
View/download PDF

24. The Role of Modulators in Controlling Layer Spacings in a Tritopic Linker Based Zirconium 2D Microporous Coordination Polymer.

Author

Jialiu Ma, Wong-Foy, Antek G., and Matzger, Adam J.

Subjects
*ZIRCONIUM compounds, *POROUS materials, *COORDINATION polymers, *CARBOXYLATES, *BENZENE
Abstract

A 2D zirconium-based microporous coordination polymer derived from the tritopic linker 1,3,5-(4-carboxylphenyl)benzene, UMCM-309a, has been synthesized. This noninterpenetrated material possesses a Zr6(μ3-O)4(μ3-OH)4(RCO2)6(OH)6(H2O)6 cluster with six hexagonal-planar-coordinated linkers. UMCM-309a is stable in an aqueous HCl solution for over 4 months. The use of different monocarboxylates as modulators leads to similar 2D structures with different layer spacings; moreover, removal of the modulator yields the parent UMCM-309a. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

25. Structure activity relationships in metal-organic framework catalysts for the continuous flow synthesis of propylene carbonate from CO 2 and propylene oxide.

Author

James BR, Boissonnault JA, Wong-Foy AG, Matzger AJ, and Sanford MS

Abstract

This paper describes the systematic study of metal-organic framework (MOF) catalysts for the reaction of propylene oxide (PO) with carbon dioxide (CO 2 ) to generate propylene carbonate (PC). These studies began with the evaluation of MIL-101(Cr) as catalyst in a flow reactor. Under the developed flow conditions, MIL-101(Cr) was found to effectively catalyze PO carbonation in the absence of a halide co-catalyst. A systematic study of catalyst performance was then undertaken as a function of MOF synthesis technique, activation conditions, metal center, and node architecture. Ultimately, these investigations led to the identification of MIL-100(Sc) as a new, active, and stable catalyst for PO carbonation., Competing Interests: There are no conflicts to declare., (This journal is © The Royal Society of Chemistry.)

Published
2018
Full Text
View/download PDF

26. A Perylene-Based Microporous Coordination Polymer Interacts Selectively with Electron-Poor Aromatics.

Author

Tran LD, Ma J, Wong-Foy AG, and Matzger AJ

Abstract

The design, synthesis, and properties of the new microporous coordination polymer UMCM-310 are described. The unique electronic character of the perylene-based linker enables selective interaction with electron-poor aromatics leading to efficient separation of nitroaromatics. UMCM-310 possesses high surface area and large pore size and thus permits the separation of large organic molecules based on adsorption rather than size exclusion., (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2016
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results