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Liu Y, Liu FZ, Li S, Liu H, Yan K. Biasing the Formation of Solution-Unstable Intermediates in Coordination Self-Assembly by Mechanochemistry. Chemistry 2023; 29:e202302563. [PMID: 37670119 DOI: 10.1002/chem.202302563] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/07/2023]
Abstract
Due to the reversible nature of coordination bonds and solvation effect, coordination self-assembly pathways are often difficult to elucidate experimentally in solution, as intermediates and products are in constant equilibration. The present study shows that some of these transient and high-energy self-assembly intermediates can be accessed by means of ball-milling approaches. Among them, highly aqueous-unstable Pd3 L11 and Pd6 L14 open-cage intermediates of the framed Fujita Pd6 L14 cage and Pd2 L22 , Pd3 L21 and Pd4 L22 intermediates of Mukherjee Pd6 L24 capsule are successfully trapped in solid-state, where Pd=tmedaPd2+ , L1=2,4,6-tris(4-pyridyl)-1,3,5-triazine and L2=1,3,5-tris(1-imidazolyl)benzene). Their structures are assigned by a combination of solution-based characterization tools such as standard NMR spectroscopy, DOSY NMR, ESI-MS and X-ray diffraction. Collectively, these results highlight the opportunity of using mechanochemistry to access unique chemical space with vastly different reactivity compared to conventional solution-based supramolecular self-assembly reactions.
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Affiliation(s)
- Yan Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Fang-Zi Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Shi Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Hua Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - KaKing Yan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
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2
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Liu Y, Liu FZ, Yan K. Mechanochemical Access to a Short-Lived Cyclic Dimer Pd 2 L 2 : An Elusive Kinetic Species En Route to Molecular Triangle Pd 3 L 3 and Molecular Square Pd 4 L 4. Angew Chem Int Ed Engl 2022; 61:e202116980. [PMID: 35191567 DOI: 10.1002/anie.202116980] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Indexed: 11/08/2022]
Abstract
Pd-based molecular square Pd4 L4 and triangle Pd3 L3 represent the molecular ancestors of metal-coordination polyhedra that have been an integral part of the field for the last 30 years. Conventional solution-based reactions between cis-protected Pd ions and 2,2'-bipyridine exclusively give Pd4 L4 and/or Pd3 L3 as the sole products. We herein show that, under solvent-free mechanochemical conditions, the self-assembly energy landscape can be thermodynamically manipulated to form an elusive cyclic dimer Pd2 L2 for the first time. In the absence of solvent, Pd2 L2 is indefinitely stable in the solid-state, but converts rapidly to its thermodynamic products Pd3 L3 and Pd4 L4 in solution, confirming Pd2 L2 as a short-lived kinetic species in the solution-based self-assembly process. Our results highlight how mechanochemistry grants access to a vastly different chemical space than available under conventional solution conditions. This provides a unique opportunity to isolate elusive species in self-assembly processes that are too reactive to both "see" and "capture".
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Affiliation(s)
- Yan Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - Fang-Zi Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - KaKing Yan
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
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3
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Liu Y, Liu F, Yan K. Mechanochemical Access to a Short‐Lived Cyclic Dimer Pd
2
L
2
: An Elusive Kinetic Species En Route to Molecular Triangle Pd
3
L
3
and Molecular Square Pd
4
L
4. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yan Liu
- School of Physical Science and Technology ShanghaiTech University 201210 Shanghai China
| | - Fang‐Zi Liu
- School of Physical Science and Technology ShanghaiTech University 201210 Shanghai China
| | - KaKing Yan
- School of Physical Science and Technology ShanghaiTech University 201210 Shanghai China
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4
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Wang D, Zhang L, Zhao Y. Template-Free Synthesis of an Interlocked Covalent Organic Molecular Cage. J Org Chem 2022; 87:2767-2772. [DOI: 10.1021/acs.joc.1c02688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danbo Wang
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, 266000 Qingdao, China
| | - Lin Zhang
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, 266000 Qingdao, China
| | - Yingjie Zhao
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, 266000 Qingdao, China
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5
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Chen CY, Xu HC, Ho TH, Hsu CJ, Lai CC, Liu YH, Peng SM, Chiu SH. Complementarity of 2,6-Dimethanolpyridine and Di(ethylene glycol) in the Complexation of Na + Ions: Attaching Multiple Copies of [2]Catenane Branches to Isophthalaldehyde-Containing Cores. J Org Chem 2021; 86:13491-13502. [PMID: 34514788 DOI: 10.1021/acs.joc.1c01580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study we found that 2,6-dimethanolpyridine displays good complementarity toward di(ethylene glycol) for the complexation of Na+ ions, allowing us to use this recognition system for the efficient synthesis of hetero[2]catenanes; indeed, it allowed us to attach multiple copies of [2]catenanes to branched systems presenting multiple isophthalaldehyde units. When we attempted to form a catenane from a preformed macrocycle featuring only a single di(ethylene glycol) unit, reacting it with a di(ethylene glycol) derivative presenting two amino termini, isophthalaldehyde, and templating Na+ ions [i.e., with the aim of using di(ethylene glycol)·Na+·di(ethylene glycol) recognition to template the formation of the interlocked imino macrocycle], the yields of the hetero[2]catenane and homo[2]catenane, comprising two imino macrocyclic units, were both poor (14% and 7%, respectively). In contrast, when one or two 2,6-dimethanolpyridine units were present in the preformed macrocycles, their reactions with the same diamine, dialdehyde, and Na+ ions provided the hetero[2]catenanes with high selectivity and efficiency (44% and 64% yields, respectively), with minimal formation of the competing homo[2]catenane. The high complementary of the 2,6-dimethanolpyridine·Na+·di(ethylene glycol) ligand pair allowed us to synthesize [2]catenane dimers and trimers directly from corresponding isophthalaldehyde-presenting cores, with yields, after subsequent reduction and methylation, of 42% and 31%, respectively.
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Affiliation(s)
- Ching-Yu Chen
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan
| | - Han-Chen Xu
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan
| | - Tsung-Hsien Ho
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan
| | - Chun-Ju Hsu
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan
| | - Chien-Chen Lai
- Institute of Molecular Biology, National Chung Hsing University, 40225 Taichung, Taiwan.,Department of Medical Genetics, China Medical University Hospital, 40447 Taichung, Taiwan
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan
| | - Shie-Ming Peng
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan
| | - Sheng-Hsien Chiu
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan
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6
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Chan SM, Tang FK, Lam CY, Kwan CS, Hau SCK, Leung KCF. π-Stacking Stopper-Macrocycle Stabilized Dynamically Interlocked [2]Rotaxanes. Molecules 2021; 26:4704. [PMID: 34361858 PMCID: PMC8347712 DOI: 10.3390/molecules26154704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 07/30/2021] [Accepted: 08/01/2021] [Indexed: 11/16/2022] Open
Abstract
The synthesis of mechanically interlocked molecules is valuable due to their unique topologies. With π-stacking intercomponent interaction, e.g., phenanthroline and anthracene, novel [2]rotaxanes have been synthesized by dynamic imine clipping reaction. Their X-ray crystal structures indicate the π-stackings between the anthracene moiety (stopper) on the thread and the (hetero)aromatic rings at the macrocycle of the rotaxanes. Moreover, the length of glycol chains affects the extra π-stacking intercomponent interactions between the phenyl groups and the dimethoxy phenyl groups on the thread. Dynamic combinatorial library has shown at best 84% distribution of anthracene-threaded phenanthroline-based rotaxane, coinciding with the crystallography in that the additional π-stacking intercomponent interactions could increase the thermodynamic stability and selectivity of the rotaxanes.
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Affiliation(s)
- Sing-Ming Chan
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, The Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong, China; (S.-M.C.); (F.-K.T.); (C.-Y.L.); (C.-S.K.)
| | - Fung-Kit Tang
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, The Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong, China; (S.-M.C.); (F.-K.T.); (C.-Y.L.); (C.-S.K.)
| | - Ching-Yau Lam
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, The Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong, China; (S.-M.C.); (F.-K.T.); (C.-Y.L.); (C.-S.K.)
| | - Chak-Shing Kwan
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, The Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong, China; (S.-M.C.); (F.-K.T.); (C.-Y.L.); (C.-S.K.)
| | - Sam C. K. Hau
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Ken Cham-Fai Leung
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, The Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong, China; (S.-M.C.); (F.-K.T.); (C.-Y.L.); (C.-S.K.)
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7
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Zhang JH, Wang HP, Zhang LY, Wei SC, Wei ZW, Pan M, Su CY. Coordinative-to-covalent transformation, isomerization dynamics, and logic gate application of dithienylethene based photochromic cages. Chem Sci 2020; 11:8885-8894. [PMID: 34123142 PMCID: PMC8163336 DOI: 10.1039/d0sc03290e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Photochromic coordinative cages containing dynamic C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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N imine bonds are assembled from a dithienylethene-based aldehyde and tris-amine precursors via metallo-component self-assembly. The resulting metal-templated cages are then reduced and demetalated into pure covalent-organic cages (COCs), which are otherwise difficult to prepare via de novo organic synthesis. Both the obtained coordinative and covalent cages can be readily interconverted between the ring-open (o-isomer) and one-lateral ring-closed (c-isomer) forms by UV/vis light irradiation, demonstrating distinct absorption, luminescence and photoisomerization dynamics. Specifically, the ring-closed c-COCs show a blue-shifted absorption band compared with analogous metal-templated cages, which can be applied in photoluminescence (PL) color-tuning of upconversion materials in different ways, showing potential for constructing multi-readout logic gate systems. Metal-templated component self-assembly and then demetalation affords photochromic covalent organic cages applicable for upconversion PL-color tuning for logic gates.![]()
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Affiliation(s)
- Jian-Hua Zhang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 China
| | - Hai-Ping Wang
- School of Biotechnology and Health Sciences, Wuyi University Jiangmen 529020 China
| | - Lu-Yin Zhang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 China
| | - Shi-Chao Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 China
| | - Zhang-Wen Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 China
| | - Mei Pan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 China
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La Cognata S, Miljkovic A, Mobili R, Bergamaschi G, Amendola V. Organic Cages as Building Blocks for Mechanically Interlocked Molecules: Towards Molecular Machines. Chempluschem 2020; 85:1145-1155. [PMID: 32490593 DOI: 10.1002/cplu.202000274] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/11/2020] [Indexed: 01/15/2023]
Abstract
The research on systems able to perform controllable motions under external stimuli arises great interest in the scientific community. Over the years, a library of innovative devices has been produced, classified in different categories according to the molecular or supramolecular level of motion. This minireview aims to highlight some representative studies, in which organic cages are used as building blocks for mechanically interlocked molecules, and in which intramolecular motions are triggered by external input. However, the application of organic cages in the construction of molecular machines is hardly achieved. A good compromise must actually be reached, between flexibility and rigidity of the cage's framework for an effective control of the intra- and/or intermolecular motion in the final mechanical device. Our final goal is to stimulate researchers' curiosity towards cage-like molecules, so that they take on the challenge of converting a cage into a molecular machine.
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Affiliation(s)
- Sonia La Cognata
- Department of Chemistry, University of Pavia, V. le Taramelli 12, 27100, Pavia, Italy
| | - Ana Miljkovic
- Department of Chemistry, University of Pavia, V. le Taramelli 12, 27100, Pavia, Italy
| | - Riccardo Mobili
- Department of Chemistry, University of Pavia, V. le Taramelli 12, 27100, Pavia, Italy
| | - Greta Bergamaschi
- National Research Council of Italy, Istituto di Scienze e Tecnologie Chimiche, Via M. Bianco 9, 20131, Milano, Italy
| | - Valeria Amendola
- Department of Chemistry, University of Pavia, V. le Taramelli 12, 27100, Pavia, Italy
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9
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Zhou WL, Zhao X, Chen Y, Liu Y. Construction and heterogeneous photooxidization reactivity of a cyclodextrin/porphyrin polyrotaxane network. Org Chem Front 2019. [DOI: 10.1039/c8qo00790j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A supramolecular polyrotaxane network, based on a CD-based inclusion complex and porphyrin derivative, was synthesized by imine condensation reactions. Then it could be applied as a heterogeneous catalyst for generating singlet oxygen under photoirradiation, which showed its good ability to photooxidize anthracene derivatives.
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Affiliation(s)
- Wei-Lei Zhou
- College of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Xuan Zhao
- College of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Yong Chen
- College of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Yu Liu
- College of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
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10
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Go M, Choi H, Kim KY, Moon CJ, Choi Y, Miyake H, Lee SS, Jung SH, Choi MY, Jung JH. Temperature-controlled helical inversion of asymmetric triphenylamine-based supramolecular polymers; difference of handedness at the micro- and macroscopic levels. Org Chem Front 2019. [DOI: 10.1039/c9qo00051h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The M-helicity of asymmetric N-triphenylamine-based supramolecular polymers was inverted to the P-helicity during heating.
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Affiliation(s)
- Misun Go
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
| | - Heekyoung Choi
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
| | - Ka Young Kim
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
| | - Cheol Joo Moon
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
| | - Yeonweon Choi
- Accident Prevention and Assessment Division 2
- National Institute of Chemical Safety
- Daejeon 34111
- South Korea
| | - Hiroyuki Miyake
- Department of Chemistry
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Shim Sung Lee
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
| | - Sung Ho Jung
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
| | - Myong Yong Choi
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of Natural Sciences
- Gyeongsang National University
- Jinju 52828
- South Korea
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11
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Valls A, Altava B, Burguete MI, Escorihuela J, Martí-Centelles V, Luis SV. Supramolecularly assisted synthesis of chiral tripodal imidazolium compounds. Org Chem Front 2019. [DOI: 10.1039/c9qo00163h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Supramolecular interactions based on amide groups direct the preferential formation of tritopic instead of monotopic or ditopic imidazolium compounds.
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Affiliation(s)
- Adriana Valls
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | - Belén Altava
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | - M. Isabel Burguete
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | - Jorge Escorihuela
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
| | | | - Santiago V. Luis
- Departamento de Química Inorgánica y Orgánica
- Universitat Jaume I
- Castellón
- Spain
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12
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Santra S, Ghosh P. Rotamer-Induced Dynamic Nature of a [2]Rotaxane and Control of the Dynamics by External Stimuli. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Saikat Santra
- Department of Inorganic Chemistry; Indian Association for the Cultivation of Science; 2A and 2B Raja S.C. Mullick Road Kolkata India
| | - Pradyut Ghosh
- Department of Inorganic Chemistry; Indian Association for the Cultivation of Science; 2A and 2B Raja S.C. Mullick Road Kolkata India
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13
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Xu L, Yang HB. Our Expedition in Linear Neutral Platinum-Acetylide Complexes: The Preparation of Micro/nanostructure Materials, Complicated Topologies, and Dye-Sensitized Solar Cells. CHEM REC 2016; 16:1274-97. [PMID: 27097565 DOI: 10.1002/tcr.201500271] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Indexed: 01/12/2023]
Abstract
During the past few decades, the construction of various kinds of platinum-acetylide complexes has attracted considerable attention, because of their wide applications in photovoltaic cells, non-linear optics, and bio-imaging materials. Among these platinum-acetylide complexes, the linear neutral platinum-acetylide complexes, due to their attractive properties, such as well-defined linear geometry, synthetic accessibility, and intriguing photoproperties, have emerged as a rising star in this field. In this personal account, we will discuss how we entered the field of linear neutral platinum-acetylide chemistry and what we found in this field. The preparation of various types of linear neutral platinum-acetylide complexes and their applications in the areas of micro/nanostructure materials, complicated topologies, and dye-sensitized solar cells will be summarized in this account.
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Affiliation(s)
- Lin Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, P. R. China
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, P. R. China
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14
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Wang W, Sun B, Wang XQ, Ren YY, Chen LJ, Ma J, Zhang Y, Li X, Yu Y, Tan H, Yang HB. Discrete Stimuli-Responsive Multirotaxanes with Supramolecular Cores Constructed through a Modular Approach. Chemistry 2015; 21:6286-94. [DOI: 10.1002/chem.201500286] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Indexed: 01/03/2023]
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15
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Zhou TY, Qi QY, Zhang Y, Xu XN, Zhao X. A thermally stable pH-responsive “supramolecular buckle” based on the encapsulation of 4-(4-aminophenyl)-N-methylpyridinium by cucurbit[8]uril. Org Chem Front 2015. [DOI: 10.1039/c5qo00168d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A CB[8]-based host-guest system forms a thermally stable 1 : 2 complex under neutral conditions and transforms into a 1 : 1 complex upon acidification, which makes it a “supramolecular buckle” to fabricate pH-responsive materials at elevated temperatures.
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Affiliation(s)
- Tian-You Zhou
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Qiao-Yan Qi
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Ying Zhang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xiao-Na Xu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xin Zhao
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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16
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Zhang Y, Qu X, Wang F, Wu G, Li J, Hong H, Liu C. Effect of the solvent on improving the recognition properties of surface molecularly imprinted polymers for precise separation of erythromycin. RSC Adv 2015. [DOI: 10.1039/c5ra09497f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The results of 13C-NMR and isothermal titration calorimetry indicate that adding of NH3·H2O is able to prevent the electrostatic interaction between MAA and ERY-A and consequently prevent nonspecific adsorption and achieve higher specificity.
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Affiliation(s)
- Yuxin Zhang
- The
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Xue Qu
- The
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - FeiFei Wang
- Engineering Research Centre for Biomedical Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Gang Wu
- Engineering Research Centre for Biomedical Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Jinyang Li
- Engineering Research Centre for Biomedical Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Hua Hong
- Engineering Research Centre for Biomedical Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Changsheng Liu
- The
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
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17
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He Z, Ye G, Jiang W. Imine Macrocycle with a Deep Cavity: Guest-Selected Formation ofsyn/antiConfiguration and Guest-Controlled Reconfiguration. Chemistry 2014; 21:3005-12. [DOI: 10.1002/chem.201405912] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Indexed: 12/15/2022]
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