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21. An efficient strategy for improving the luminescent sensing performance of a terbium(iii) metal–organic framework towards multiple substances

Author:
Zhou, Hong-Cai,   et al.   ; Wang, Xiaoning; Li, Jia-Luo; Jiang, Chenggang; Hu, Peng; Li, Bao; Zhang, Tianle;     Show all 7 Authors
Source:
Chemical communications 2018 v.54 no.94 pp. 13271-13274
ISSN:
1364-548X
Subject:
anions; chemical reactions; coordination compounds; iron; luminescence; terbium; triazoles
Abstract:
... By anchoring triazole units onto its skeleton, the luminescent sensing properties of a terbium(iii) metal–organic framework could be efficiently improved, including not only an expansion of the scale of analytes such as Fe³⁺, anions and nitroaromatic molecules, but also enhanced selectivity and sensitivity. ...
DOI:
10.1039/c8cc07369d

22. Recyclable and Reusable Heteroleptic Nickel Catalyst Immobilized on Metal–Organic Framework for Suzuki–Miyaura Coupling

Author:
Zhou, Hong-Cai,   et al.   ; Elumalai, Palani; Mamlouk, Hind; Yiming, Wubulikasimu; Feng, Liang; Yuan, Shuai; Madrahimov, Sherzod T.;     Show all 7 Authors
Source:
ACS applied materials & interfaces 2018 v.10 no.48 pp. 41431-41438
ISSN:
1944-8252
Subject:
Suzuki reaction; catalysts; catalytic activity; coordination polymers; ligands; nickel; organobromine compounds
Abstract:
... Metal–organic frameworks (MOFs) provide highly versatile platforms to stabilize molecular catalysts that are not readily accessible under homogeneous conditions, thus enabling access to a new set of catalytic materials. Herein, we describe a recyclable and highly active nickel catalyst immobilized on MOF for Suzuki–Miyaura coupling reaction, which operates under mild conditions. This mixed ligand ...
DOI:
10.1021/acsami.8b16136

23. Interior Decoration of Stable Metal–Organic Frameworks

Author:
Zhou, Hong-Cai,   et al.   ; Lollar, Christina Tori; Qin, Jun-Sheng; Pang, Jiandong; Yuan, Shuai; Becker, Benjamin;     Show all 6 Authors
Source:
Langmuir 2018 v.34 no.46 pp. 13795-13807
ISSN:
1520-5827
Subject:
catalytic activity; coordination polymers; enzymes; mechanical properties; solvents; surface area; temperature; thermal properties
Abstract:
... Metal–organic frameworks (MOFs) are a diverse class of hybrid organic/inorganic crystalline materials composed of metal-containing nodes held in place by organic linkers. Through a discerning selection of these components, many properties such as the internal surface area, cavity size and shape, catalytic properties, thermal properties, and mechanical properties may be manipulated. Because of this ...
DOI:
10.1021/acs.langmuir.8b00823

24. Creating Well-Defined Hexabenzocoronene in Zirconium Metal–Organic Framework by Postsynthetic Annulation

Author:
Zhou, Hong-Cai,   et al.   ; Qin, Jun-Sheng; Yuan, Shuai; Zhang, Lei; Li, Bao; Du, Dong-Ying; Huang, Ning; Guan, Wei; Drake, Hannah F.; Pang, Jiandong; Lan, Ya-Qian; Alsalme, Ali;     Show all 12 Authors
Source:
Journal of the American Chemical Society 2019 v.141 no.5 pp. 2054-2060
ISSN:
1520-5126
Subject:
X-ray diffraction; active sites; carbon dioxide; coordination polymers; electrochemistry; irradiation; ligands; moieties; photocatalysis; photosensitizing agents; solubility; zirconium
Abstract:
... The incorporation of large π-conjugated ligands into metal–organic frameworks (MOFs) can introduce intriguing photophysical and electrochemical properties into the framework. However, these effects are often hindered by the strong π–π interaction and the low solubility of the arylated ligands. Herein, we report the synthesis of a porous zirconium-based MOF, Zr₆(μ₃-O)₄(μ₃-OH)₄(OH)₆(H₂O)₆(HCHC) (PCN ...
DOI:
10.1021/jacs.8b11042

25. Flexible Zirconium MOF as the Crystalline Sponge for Coordinative Alignment of Dicarboxylates

Author:
Zhou, Hong-Cai,   et al.   ; Qin, Jun-Sheng; Yuan, Shuai; Alsalme, Ali;     Show all 4 Authors
Source:
ACS applied materials & interfaces 2017 v.9 no.39 pp. 33408-33412
ISSN:
1944-8252
Subject:
chemistry; coordination polymers; encapsulation; ligands; porosity; zirconium
Abstract:
... Because of their permanent porosity and unparalleled structural diversities, flexible metal–organic frameworks (MOFs) are promising and highly desirable in host–guest chemistry. In this work, we employed a flexible Zr-MOF system, namely PCN-700 species, as the crystalline sponge for guest inclusion. A family of linear dicarboxylate ligands was adsorbed in the void space of PCN-700, which were subs ...
DOI:
10.1021/acsami.6b16264

26. From fundamentals to applications: a toolbox for robust and multifunctional MOF materials

Author:
Zhou, Hong-Cai,   et al.   ; KirchonThese authors contributed equally to this work., Angelo; Feng, Liang; Drake, Hannah F.; Joseph, Elizabeth A.;     Show all 5 Authors
Source:
Chemical Society reviews 2018 v.47 no.23 pp. 8611-8638
ISSN:
1460-4744
Subject:
catalytic activity; coordination polymers; geometry; ligands; medicine
Abstract:
... In recent years, metal–organic frameworks (MOFs) have been regarded as one of the most important classes of materials. The combination of various metal clusters and ligands, arranged in a vast array of geometries has led to an ever-expanding MOF family. Each year, new and novel MOF structures are discovered. The structural diversity present in MOFs has significantly expanded the application of the ...
DOI:
10.1039/c8cs00688a

27. Sophisticated Construction of Electronically Labile Materials: A Neutral, Radical-Rich, Cobalt Valence Tautomeric Triangle

Author:
Zhou, Hong-Cai,   et al.   ; Li, Bao; Wang, Xiao-Ning; Kirchon, Angelo; Qin, Jun-Sheng; Pang, Jian-Dong; Zhuang, Gui-Lin;     Show all 7 Authors
Source:
Journal of the American Chemical Society 2018 v.140 no.44 pp. 14581-14585
ISSN:
1520-5126
Subject:
anions; cobalt; electron transfer; quinones; tautomerization; temperature
Abstract:
... Herein, we report the construction of a neutral, radical-rich, cobalt valence tautomeric triangle, which consists of two types of radical groups including tetrazine-based bridges and semiquinone anions at high temperature and has traits of high intensity and density of sensing sites. The mechanism of the Valence Tautomerism process within the triangle has been illustrated as one electron transfer, ...
DOI:
10.1021/jacs.8b09062

28. Stable metal–organic frameworks as a host platform for catalysis and biomimetics

Author:
Zhou, Hong-Cai,   et al.   ; QinThese authors contributed equally to this work., Jun-Sheng; Yuan, Shuai; Lollar, Christina; Pang, Jiandong; Alsalme, Ali;     Show all 6 Authors
Source:
Chemical communications 2018 v.54 no.34 pp. 4231-4249
ISSN:
1364-548X
Subject:
active sites; biomimetics; biosensors; catalysts; catalytic activity; coordination compounds; mineralization
Abstract:
... Recent years have witnessed the exploration and synthesis of an increasing number of metal–organic frameworks (MOFs). The utilization of stable MOFs as a platform for catalysis and biomimetics is discussed. This Feature Article will provide insights into the rational design and synthesis of three types of stable MOF catalysts on the basis of structural features of MOFs, that is, (i) MOF catalysts ...
DOI:
10.1039/c7cc09173g

29. High stability of ultra-small and isolated gold nanoparticles in metal–organic framework materials

Author:
Zhou, Hong-Cai,   et al.   ; Cure, Jérémy; Mattson, Eric; Cocq, Kévin; Assi, Hala; Jensen, Stephanie; Tan, Kui; Catalano, Massimo; Yuan, Shuai; Wang, Hao; Feng, Liang; Zhang, Peng; Kwon, Sunah; Veyan, Jean-François; Cabrera, Yasiel; Zhang, Guoyu; Li, Jing; Kim, Moon; Chabal, Yves J.; Thonhauser, Timo;     Show all 20 Authors
Source:
Journal of materials chemistry A 2019 v.7 no.29 pp. 17536-17546
ISSN:
2050-7496
Subject:
coordination polymers; image analysis; irradiation; nanogold; photocatalysis; physical properties; spectral analysis; spectroscopy; thiols; transmission electron microscopy
Abstract:
... Gold nanoparticles (NPs) exhibit optical, catalytic, and physical properties that are scientifically fascinating and essential for many applications. However, the challenge is to synthesize and disperse ultra-small and highly stable NPs. We demonstrate here that isolated and ultra-small (∼1 nm) Au NPs can be synthesized by photo-reduction of HAuCl₄ inside thiol-functionalized MOFs, including MIL-1 ...
DOI:
10.1039/c8ta12334a

30. Enhancing Pore-Environment Complexity Using a Trapezoidal Linker: Toward Stepwise Assembly of Multivariate Quinary Metal–Organic Frameworks

Author:
Zhou, Hong-Cai,   et al.   ; Pang, Jiandong; Yuan, Shuai; Qin, Junsheng; Wu, Mingyan; Lollar, Christina T.; Li, Jialuo; Huang, Ning; Li, Bao; Zhang, Peng;     Show all 10 Authors
Source:
Journal of the American Chemical Society 2018 v.140 no.39 pp. 12328-12332
ISSN:
1520-5126
Subject:
coordination polymers; moieties; zirconium
Abstract:
... Multicomponent metal–organic frameworks (MOFs) promise the precise placement of synergistic functional groups with atomic-level precision, capable of promoting fascinating developments in basic sciences and applications. However, the complexity of multicomponent systems poses a challenge to their structural design and synthesis. Herein, we show that linkers of low symmetry can bring new opportunit ...
DOI:
10.1021/jacs.8b07411

31. Tailor-Made Pyrazolide-Based Metal–Organic Frameworks for Selective Catalysis

Author:
Zhou, Hong-Cai,   et al.   ; Huang, Ning; Wang, Kecheng; Drake, Hannah; Cai, Peiyu; Pang, Jiandong; Li, Jialuo; Che, Sai; Huang, Lan; Wang, Qi;     Show all 10 Authors
Source:
Journal of the American Chemical Society 2018 v.140 no.20 pp. 6383-6390
ISSN:
1520-5126
Subject:
aqueous solutions; catalysts; catalytic activity; coordination polymers; moieties; solvents; topology
Abstract:
... The predesignable porous structures in metal–organic frameworks (MOFs) render them quite attractive as a host–guest platform to address a variety of important issues at the frontiers of science. In this work, a perfluorophenylene functionalized metalloporphyrinic MOF, namely, PCN-624, has been rationally designed, synthesized, and structurally characterized. PCN-624 is constructed by 12-connected ...
DOI:
10.1021/jacs.8b02710

32. Creating Hierarchical Pores by Controlled Linker Thermolysis in Multivariate Metal–Organic Frameworks

Author:
Zhou, Hong-Cai,   et al.   ; Feng, Liang; Yuan, Shuai; Zhang, Liang-Liang; Tan, Kui; Li, Jia-Luo; Kirchon, Angelo; Liu, Ling-Mei; Zhang, Peng; Han, Yu; Chabal, Yves J.;     Show all 11 Authors
Source:
Journal of the American Chemical Society 2018 v.140 no.6 pp. 2363-2372
ISSN:
1520-5126
Subject:
catalytic activity; coordination polymers; crystal structure; decarboxylation; drugs; immobilized enzymes; nanoparticles; porosity; porous media; thermal degradation
Abstract:
... Sufficient pore size, appropriate stability, and hierarchical porosity are three prerequisites for open frameworks designed for drug delivery, enzyme immobilization, and catalysis involving large molecules. Herein, we report a powerful and general strategy, linker thermolysis, to construct ultrastable hierarchically porous metal–organic frameworks (HP-MOFs) with tunable pore size distribution. Lin ...
DOI:
10.1021/jacs.7b12916

33. Chromium(II) Metal–Organic Polyhedra as Highly Porous Materials

Author:
Zhou, Hong-Cai,   et al.   ; Park, Jinhee; Perry, Zachary; Chen, Ying-Pin; Bae, Jaeyeon;     Show all 5 Authors
Source:
ACS applied materials & interfaces 2017 v.9 no.33 pp. 28064-28068
ISSN:
1944-8252
Subject:
chromium; copper; materials science; molybdenum; synthesis
Abstract:
... Herein we report for the first time the synthesis of Cr(II)-based metal–organic polyhedra (MOPs) and the characterization of their porosities. Unlike the isostructural Cu(II)- or Mo(II)-based MOPs, Cr(II)-based MOPs show unusually high gas uptakes and surface areas. The combination of comparatively robust dichromium paddlewheel units (Cr₂ units), cage symmetries, and packing motifs enable these ma ...
DOI:
10.1021/acsami.7b09339

34. Reversible photoreduction of Cu(ii)–coumarin metal–organic polyhedra

Author:
Zhou, Hong-Cai,   et al.   ; Bae, Jaeyeon; Baek, Kangkyun; Yuan, Daqiang; Kim, Wooram; Kim, Kimoon; Park, Jinhee;     Show all 7 Authors
Source:
Chemical communications 2017 v.53 no.66 pp. 9250-9253
ISSN:
1364-548X
Subject:
benzophenones; catalysts; catalytic activity; coordination compounds; copper; coumarin; cycloaddition reactions
Abstract:
... We report a new approach for photoinduced reduction of Cu²⁺ that will enrich the structural diversity of coordination complexes and be a valuable contributor to the development of Cu⁺/Cu⁰-based catalysts. To realize controlled Cu²⁺ reduction, coumarin as a triplet quencher of excited benzophenone was tethered to Cu(ii)–metal–organic polyhedra (MOPs). The photoinduced catalytic activity of the coum ...
DOI:
10.1039/c7cc04799a

35. Mixed-linker strategy for the construction of multifunctional metal–organic frameworks

Author:
Zhou, Hong-Cai,   et al.   ; Qin, Jun-Sheng; Yuan, Shuai; Wang, Qi; Alsalme, Ali;     Show all 5 Authors
Source:
Journal of materials chemistry A 2017 v.5 no.9 pp. 4280-4291
ISSN:
2050-7496
Subject:
catalytic activity; coordination polymers; energy; porosity
Abstract:
... Owing to their permanent porosity, tunability and multifunctionalization, metal–organic framework (MOF) materials have captured widespread interest in various fields, including gas storage and separation, catalysis, and energy storage. However, precise control over the composition, structure and properties of MOF materials remains a generally elusive but worthwhile dream. The stepwise assembly of ...
DOI:
10.1039/c6ta10281f

36. Computational prediction of hetero-interpenetration in metal–organic frameworks

Author:
Zhou, Hong-Cai,   et al.   ; KwonThese authors contributed equally to this work., Ohmin; Park, Sanghoon; Kim, Jihan;     Show all 4 Authors
Source:
Chemical communications 2017 v.53 no.12 pp. 1953-1956
ISSN:
1364-548X
Subject:
adsorption; algorithms; chemical reactions; coordination compounds; databases; hydrogen; methane; molecular dynamics; porous media; prediction
Abstract:
... We present a computational algorithm that can screen through a database of metal–organic framework structures and identify materials that lead to hetero-interpenetration with targeted porous materials. Two MOFs (IRMOF-1 and IRMOF-8) were selected as target materials and our algorithm identified PCN-68 and PCN-610 as matching candidates for interpenetration. Molecular simulation results indicate th ...
DOI:
10.1039/c6cc08940b

37. Dual Exchange in PCN-333: A Facile Strategy to Chemically Robust Mesoporous Chromium Metal–Organic Framework with Functional Groups

Author:
Zhou, Hong-Cai,   et al.   ; Park, Jihye; Feng, Dawei;     Show all 3 Authors
Source:
Journal of the American Chemical Society 2015 v.137 no.36 pp. 11801-11809
ISSN:
1520-5126
Subject:
chromium; crystal structure; ligands; porosity; porous media; thermodynamics
Abstract:
... A facile preparation of a mesoporous Cr-MOF, PCN-333(Cr) with functional group, has been demonstrated through a dual exchange strategy, involving a sequential ligand exchange and metal metathesis process. After optimization of the exchange system, the functionalized PCN-333(Cr), N₃–PCN-333(Cr) shows well maintained crystallinity, porosity, as well as much improved chemical stability. Because of th ...
DOI:
10.1021/jacs.5b07373

38. Structure-Assisted Functional Anchor Implantation in Robust Metal–Organic Frameworks with Ultralarge Pores

Author:
Zhou, Hong-Cai,   et al.   ; Park, Jihye; Feng, Dawei;     Show all 3 Authors
Source:
Journal of the American Chemical Society 2015 v.137 no.4 pp. 1663-1672
ISSN:
1520-5126
Subject:
coordination polymers; crystal structure; fluorescent dyes; ligands
Abstract:
... A facile functionalization assisted by the structural attributes of PCN-333 has been studied while maintaining the integrity of the parent MOF including ultralarge pores, chemical robustness, and crystallinity. Herein we thoroughly analyzed ligand exchange phenomena in PCN-333 and demonstrate that the extent of exchange can be tailored by varying the exchange conditions as potential applications m ...
DOI:
10.1021/ja5123528

39. Control the Structure of Zr-Tetracarboxylate Frameworks through Steric Tuning

Author:
Zhou, Hong-Cai,   et al.   ; Pang, Jiandong; Yuan, Shuai; Qin, Junsheng; Liu, Caiping; Lollar, Christina; Wu, Mingyan; Yuan, Daqiang; Hong, Maochun;     Show all 9 Authors
Source:
Journal of the American Chemical Society 2017 v.139 no.46 pp. 16939-16945
ISSN:
1520-5126
Subject:
coordination polymers; influenza; ligands; molecular dynamics; prediction; topology
Abstract:
... Ligands with flexible conformations add to the structural diversity of metal–organic frameworks but, at the same time, pose a challenge to structural design and prediction. Representative examples include Zr-tetracarboxylate-based MOFs, which afford assorted structures for a wide range of applications, but also complicate the structural control. Herein, we systematically studied the formation mech ...
DOI:
10.1021/jacs.7b09973

40. Controlled Intercalation and Chemical Exfoliation of Layered Metal–Organic Frameworks Using a Chemically Labile Intercalating Agent

Author:
Zhou, Hong-Cai,   et al.   ; Ding, Yanjun; Chen, Ying-Pin; Zhang, Xinlei; Chen, Liang; Dong, Zhaohui; Jiang, Hai-Long; Xu, Hangxun;     Show all 8 Authors
Source:
Journal of the American Chemical Society 2017 v.139 no.27 pp. 9136-9139
ISSN:
1520-5126
Subject:
ambient temperature; coordination polymers; crystals; disulfide bonds; nanosheets; photocatalysis
Abstract:
... Creating ordered two-dimensional (2D) metal–organic framework (MOF) nanosheets has attracted extensive interest. However, it still remains a great challenge to synthesize ultrathin 2D MOF nanosheets with controlled thickness in high yields. In this work, we demonstrate a novel intercalation and chemical exfoliation approach to obtain MOF nanosheets from intrinsically layered MOF crystals. This app ...
DOI:
10.1021/jacs.7b04829