51
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Zhao X, Liu Y, Zhang Z, Wang Y, Jia X, Li C. One‐Pot and Shape‐Controlled Synthesis of Organic Cages. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104875] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiang Zhao
- College of Environmental and Chemical Engineering Shanghai University Shanghai 200444 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry Shanghai University Shanghai 200444 P. R. China
| | - Yue Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China
| | - Zhi‐Yuan Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China
| | - Yiliang Wang
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry Shanghai University Shanghai 200444 P. R. China
| | - Xueshun Jia
- College of Environmental and Chemical Engineering Shanghai University Shanghai 200444 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry Shanghai University Shanghai 200444 P. R. China
| | - Chunju Li
- College of Environmental and Chemical Engineering Shanghai University Shanghai 200444 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry Shanghai University Shanghai 200444 P. R. China
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China
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52
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Wang W, Li C, Zhang H, Zhang J, Lu L, Jiang Z, Cui L, Liu H, Yan L, Ding Y. Enhancing the activity, selectivity, and recyclability of Rh/PPh3 system-catalyzed hydroformylation reactions through the development of a PPh3-derived quasi-porous organic cage as a ligand. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63746-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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53
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Wang H, Jin Y, Sun N, Zhang W, Jiang J. Post-synthetic modification of porous organic cages. Chem Soc Rev 2021; 50:8874-8886. [PMID: 34180920 DOI: 10.1039/d0cs01142h] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Porous organic cages (POCs) represent an emerging class of organic materials with intrinsic porosity. They have found various applications in supramolecular chemistry, materials science, and many other related disciplines, which stem from their molecular host-guest interactions, intrinsic and inter-cage porosity in solid state as well as the diversity of functionalities. Post-synthetic modification (PSM) has emerged as a highly viable strategy for broadening the functions and applications of POCs. Intricate structures, enhanced stability, tunable porosity and guest binding selectivity and sensitivity have been realized through PSM of POCs, which cannot be directly achieved via the predesign and bottom-up assembly from small molecule building blocks. For example, an unstable imine-linked POC can be transformed into a more stable amine-linked cage, whose cavity size can be further tuned by selective binding of some amine groups, offering unusual gas adsorption selectivity for noble gases (e.g., preferred uptake of Xe over Kr). Such improvement of the chemical stability and gas separation properties through the consolidation of linkage and adjustment of porosity is challenging to achieve otherwise. In this tutorial review, we highlight the importance and impact of PSM in engineering the properties of POC molecules, their frameworks, and composites going beyond the direct predesign synthetic strategy. The primary PSM strategies for exploring new compositions, functions and applications as well as their structure-property relationship have been summarized, including cage-to-cage transformation at the molecular level, covalent or noncovalent assembly of POCs into frameworks, and formation of composites with guest species or other additives encapsulated.
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Affiliation(s)
- Hailong Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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54
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Holsten M, Feierabend S, Elbert SM, Rominger F, Oeser T, Mastalerz M. Soluble Congeners of Prior Insoluble Shape-Persistent Imine Cages. Chemistry 2021; 27:9383-9390. [PMID: 33848032 PMCID: PMC8362185 DOI: 10.1002/chem.202100666] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Indexed: 12/12/2022]
Abstract
One of the most applied reaction types to synthesize shape‐persistent organic cage compounds is the imine condensation reaction and it is assumed that the formed cages are thermodynamically controlled products due to the reversibility of the imine condensation. However, most of the synthesized imine cages reported are formed as precipitate from the reaction mixture and therefore rather may be kinetically controlled products. There are even examples in literature, where resulting cages are not soluble at all in common organic solvents to characterize or study their formation by NMR spectroscopy in solution. Here, a triptycene triamine containing three solubilizing n‐hexyloxy chains has been used to synthesize soluble congeners of prior insoluble cages. This allowed us to study the formation as well as the reversibility of cage formation in solution by investigating exchange of building blocks between the cages and deuterated derivatives thereof.
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Affiliation(s)
- Mattes Holsten
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Sarah Feierabend
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Sven M Elbert
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Thomas Oeser
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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55
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Efficient ethylene purification by a robust ethane-trapping porous organic cage. Nat Commun 2021; 12:3703. [PMID: 34140501 PMCID: PMC8211788 DOI: 10.1038/s41467-021-24042-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 05/24/2021] [Indexed: 12/15/2022] Open
Abstract
The removal of ethane (C2H6) from its analogous ethylene (C2H4) is of paramount importance in the petrochemical industry, but highly challenging due to their similar physicochemical properties. The use of emerging porous organic cage (POC) materials for C2H6/C2H4 separation is still in its infancy. Here, we report the benchmark example of a truncated octahedral calix[4]resorcinarene-based POC adsorbent (CPOC-301), preferring to adsorb C2H6 than C2H4, and thus can be used as a robust absorbent to directly separate high-purity C2H4 from the C2H6/C2H4 mixture. Molecular modelling studies suggest the exceptional C2H6 selectivity is due to the suitable resorcin[4]arene cavities in CPOC-301, which form more multiple C–H···π hydrogen bonds with C2H6 than with C2H4 guests. This work provides a fresh avenue to utilize POC materials for highly selective separation of industrially important hydrocarbons. The removal of ethane from ethylene is of importance in the petrochemical industry, but similar physicochemical properties of these molecules makes separation a challenging task. Here, the authors demonstrate that a robust octahedral calix[4]resorcinarene-based porous organic cage can separate high-purity ethylene from ethane/ethylene mixtures.
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56
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Kunde T, Pausch T, Schmidt BM. Supramolecular Alloys from Fluorinated Hybrid Tri 4 Di 6 Imine Cages. Chemistry 2021; 27:8457-8460. [PMID: 33852171 PMCID: PMC8252657 DOI: 10.1002/chem.202100891] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Indexed: 11/29/2022]
Abstract
To create innovative materials, efficient control and engineering of pore sizes and their characteristics, crystallinity and stability is required. Eight hybrid Tri4 Di6 imine cages with a tunable degree of fluorination and one fully fluorinated Tri4 Di6 imine cage are investigated. Although the fluorinated and the non-fluorinated building blocks used herein differ vastly in reactivity, it was possible to gain control over the outcome of the self-assembly process, by carefully controlling the feed ratio. This represents the first hybrid material based on fluorinated/hydrogenated porous organic cages (POCs). These cages with unlimited miscibility in the solid state were obtained as highly crystalline samples after recrystallization and even showed retention of the crystal lattice, forming alloys. All mixtures and the fully fluorinated Tri4 Di6 imine cage were analyzed by MALDI-MS, single-crystal XRD, powder XRD and in regard to thermal stability (TGA).
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Affiliation(s)
- Tom Kunde
- Institut für Organische Chemie und Makromolekulare ChemieHeinrich-Heine-Universität DüsseldorfUniversitätsstraße 140225DüsseldorfGermany
| | - Tobias Pausch
- Institut für Organische Chemie und Makromolekulare ChemieHeinrich-Heine-Universität DüsseldorfUniversitätsstraße 140225DüsseldorfGermany
| | - Bernd M. Schmidt
- Institut für Organische Chemie und Makromolekulare ChemieHeinrich-Heine-Universität DüsseldorfUniversitätsstraße 140225DüsseldorfGermany
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57
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Zhuo Y, Wang X, Chen S, Chen H, Ouyang J, Yang L, Wang X, You L, Utz M, Tian Z, Cao X. Quantification and Prediction of Imine Formation Kinetics in Aqueous Solution by Microfluidic NMR Spectroscopy. Chemistry 2021; 27:9508-9513. [PMID: 33899293 DOI: 10.1002/chem.202100874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Indexed: 12/14/2022]
Abstract
Quantitatively predicting the reactivity of dynamic covalent reaction is essential to understand and rationally design complex structures and reaction networks. Herein, the reactivity of aldehydes and amines in various rapid imine formation in aqueous solution by microfluidic NMR spectroscopy was quantified. Investigation of reaction kinetics allowed to quantify the forward rate constants k+ by an empirical equation, of which three independent parameters were introduced as reactivity parameters of aldehydes (SE , E) and amines (N). Furthermore, these reactivity parameters were successfully used to predict the unknown forward rate constants of imine formation. Finally, two competitive reaction networks were rationally designed based on the proposed reactivity parameters. Our work has demonstrated the capability of microfluidic NMR spectroscopy in quantifying the kinetics of label-free chemical reactions, especially rapid reactions that are complete in minutes.
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Affiliation(s)
- Youzhen Zhuo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Xiuxiu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Si Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Hang Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P.R. China
| | - Jie Ouyang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Liulin Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Xinchang Wang
- School of Electronic Science and Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Lei You
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P.R. China
| | - Marcel Utz
- School of Chemistry, University of Southampton, Southampton, Hampshire, SO17 1BJ, UK
| | - Zhongqun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
| | - Xiaoyu Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Key Laboratory of Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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58
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Lehr M, Paschelke T, Bendt V, Petersen A, Pietsch L, Harders P, McConnell AJ. Copper‐Free One‐Pot Sonogashira‐Type Coupling for the Efficient Preparation of Symmetric Diarylalkyne Ligands for Metal‐Organic Cages**. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marc Lehr
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Tobias Paschelke
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Victoria Bendt
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - André Petersen
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Lorenz Pietsch
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Patrick Harders
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Anna J. McConnell
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
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59
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Deegan MM, Bhattacharjee R, Caratzoulas S, Bloch ED. Stabilizing Porosity in Organic Cages through Coordination Chemistry. Inorg Chem 2021; 60:7044-7050. [PMID: 33905236 DOI: 10.1021/acs.inorgchem.0c03590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The number of studies concerning the permanent porosity of molecular materials, especially porous organic cages (POCs) and porous coordination cages (PCCs), have increased substantially over the past decade. The work presented here outlines novel approaches to the preparation of porous molecular structures upon metalation of nonporous, amine-based organic cages. Reduction of the well-known CC3 and CC1 imine-based POCs affords nonporous, highly flexible amine cages. These materials can be endowed with significant levels of structural rigidity via post-synthetic metalation of their ethylenediamine-type binding pockets. The hybrid metal-organic cages accessed through this approach combine aspects of POC and PCC chemistry, with structures of this type providing a potentially promising new direction for the design and development of porous molecular materials with tunability in overall charge, metal cation, porosity, and solubility.
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Affiliation(s)
- Meaghan M Deegan
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Rameswar Bhattacharjee
- Catalysis Center for Energy Innovation (CCEI), University of Delaware, Newark, Delaware 19716, United States
| | - Stavros Caratzoulas
- Catalysis Center for Energy Innovation (CCEI), University of Delaware, Newark, Delaware 19716, United States
| | - Eric D Bloch
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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60
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Li ZJ, Srebnik S. Expanding carbon capture capacity: uncovering additional CO 2 adsorption sites in imine-linked porous organic cages. Phys Chem Chem Phys 2021; 23:10311-10320. [PMID: 33951133 DOI: 10.1039/d0cp06708c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With an increasing need to develop carbon capture technologies, research regarding the use of cage-based porous materials has garnered great interest. Typically, the study of gas adsorption in porous organic cages (POCs) has focused on the gas uptake inside the cage cavity. By using molecular dynamics simulation, this study reveals the presence of eight sites outside the cavity of a 15-crown-5 ether-substituted imine-linked POC which could enhance carbon dioxide adsorption capacity. Adsorption on these sites is likely stabilized by the functional groups on the cage vertices and the imine groups on the faces of the POC. These external adsorption sites have a higher CO2 adsorption capacity and greater sensitivity to temperature and pressure changes than the sites within the cage cavity. These characteristics are particularly favourable for applications based on pressure- and temperature-swing separation.
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Affiliation(s)
- Zezhong John Li
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada.
| | - Simcha Srebnik
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada.
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61
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Cao L, Russo D, Lapkin AA. Automated robotic platforms in design and development of formulations. AIChE J 2021. [DOI: 10.1002/aic.17248] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Liwei Cao
- Department of Chemical Engineering and Biotechnology University of Cambridge Cambridge UK
- Cambridge Centre for Advanced Research and Education in Singapore, CARES Ltd. Singapore
| | - Danilo Russo
- Department of Chemical Engineering and Biotechnology University of Cambridge Cambridge UK
| | - Alexei A. Lapkin
- Department of Chemical Engineering and Biotechnology University of Cambridge Cambridge UK
- Cambridge Centre for Advanced Research and Education in Singapore, CARES Ltd. Singapore
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62
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Greenaway RL, Jelfs KE. Integrating Computational and Experimental Workflows for Accelerated Organic Materials Discovery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004831. [PMID: 33565203 DOI: 10.1002/adma.202004831] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/28/2020] [Indexed: 06/12/2023]
Abstract
Organic materials find application in a range of areas, including optoelectronics, sensing, encapsulation, molecular separations, and photocatalysis. The discovery of materials is frustratingly slow however, particularly when contrasted to the vast chemical space of possibilities based on the near limitless options for organic molecular precursors. The difficulty in predicting the material assembly, and consequent properties, of any molecule is another significant roadblock to targeted materials design. There has been significant progress in the development of computational approaches to screen large numbers of materials, for both their structure and properties, helping guide synthetic researchers toward promising materials. In particular, artificial intelligence techniques have the potential to make significant impact in many elements of the discovery process. Alongside this, automation and robotics are increasing the scale and speed with which materials synthesis can be realized. Herein, the focus is on demonstrating the power of integrating computational and experimental materials discovery programmes, including both a summary of key situations where approaches can be combined and a series of case studies that demonstrate recent successes.
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Affiliation(s)
- Rebecca L Greenaway
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK
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63
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Jouaiti A. Terpyridinebenzaldehyde isomers: One-pot facile synthesis. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1887259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Abdelaziz Jouaiti
- Synthèse et Fonctions des Architectures Moléculaires, University of Strasbourg, CNRS, Strasbourg, France
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64
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Abstract
The discovery of materials is an important element in the development of new technologies and abilities that can help humanity tackle many challenges. Materials discovery is frustratingly slow, with the large time and resource cost often providing only small gains in property performance. Furthermore, researchers are unwilling to take large risks that they will only know the outcome of months or years later. Computation is playing an increasing role in allowing rapid screening of large numbers of materials from vast search space to identify promising candidates for laboratory synthesis and testing. However, there is a problem, in that many materials computationally predicted to have encouraging properties cannot be readily realised in the lab. This minireview looks at how we can tackle the problem of confirming that hypothetical materials are synthetically realisable, through consideration of all the stages of the materials discovery process, from obtaining the components, reacting them to a material in the correct structure, through to processing into a desired form. In an ideal world, a material prediction would come with an associated 'recipe' for the successful laboratory preparation of the material. We discuss the opportunity to thus prevent wasted effort in experimental discovery programmes, including those using automation, to accelerate the discovery of novel materials.
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Affiliation(s)
- Filip T Szczypiński
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub White City Campus, Wood Lane London W12 0BZ UK
| | - Steven Bennett
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub White City Campus, Wood Lane London W12 0BZ UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub White City Campus, Wood Lane London W12 0BZ UK
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65
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66
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67
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Gayen KS, Das T, Chatterjee N. Recent Advances in Tris‐Primary Amine Based Organic Imine Cages and Related Amine Macrocycles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Titiksha Das
- Kanchrapara College University of Kalyani Kalyani West Bengal India
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68
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Rakita Y, O'Nolan D, McAuliffe RD, Veith GM, Chupas PJ, Billinge SJL, Chapman KW. Active Reaction Control of Cu Redox State Based on Real-Time Feedback from In Situ Synchrotron Measurements. J Am Chem Soc 2020; 142:18758-18762. [PMID: 33090780 DOI: 10.1021/jacs.0c09418] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We achieve a target material state by using a recursive algorithm to control the material reaction based on real-time feedback on the system chemistry from in situ X-ray absorption spectroscopy. Without human intervention, the algorithm controlled O2:H2 gas partial pressures to approach a target average Cu oxidation state of 1+ for γ-Al2O3-supported Cu. This approach represents a new paradigm in autonomation for materials discovery and synthesis optimization; instead of iterating the parameters following the conclusion of each of a series of reactions, the iteration cycle has been scaled down to time points during an individual reaction. Application of the proof-of-concept illustrated here, using a feedback loop to couple in situ material characterization and the reaction conditions via a decision-making algorithm, can be readily envisaged in optimizing and understanding a broad range of systems including catalysis.
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Affiliation(s)
- Yevgeny Rakita
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States
| | - Daniel O'Nolan
- Department of Chemistry, Stony Brook University, 100 Nicholls Road, Stony Brook, New York 11794, United States
| | - Rebecca D McAuliffe
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Gabriel M Veith
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Peter J Chupas
- Department of Chemistry, Stony Brook University, 100 Nicholls Road, Stony Brook, New York 11794, United States
| | - Simon J L Billinge
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States.,Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Karena W Chapman
- Department of Chemistry, Stony Brook University, 100 Nicholls Road, Stony Brook, New York 11794, United States
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69
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Clayson IG, Hewitt D, Hutereau M, Pope T, Slater B. High Throughput Methods in the Synthesis, Characterization, and Optimization of Porous Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002780. [PMID: 32954550 DOI: 10.1002/adma.202002780] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 05/14/2023]
Abstract
Porous materials are widely employed in a large range of applications, in particular, for storage, separation, and catalysis of fine chemicals. Synthesis, characterization, and pre- and post-synthetic computer simulations are mostly carried out in a piecemeal and ad hoc manner. Whilst high throughput approaches have been used for more than 30 years in the porous material fields, routine integration of experimental and computational processes is only now becoming more established. Herein, important developments are highlighted and emerging challenges for the community identified, including the need to work toward more integrated workflows.
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Affiliation(s)
- Ivan G Clayson
- Department of Chemistry, University College London, 20 Gower Street, London, WC1E 6BT, UK
| | - Daniel Hewitt
- Department of Chemistry, University College London, 20 Gower Street, London, WC1E 6BT, UK
| | - Martin Hutereau
- Department of Chemistry, University College London, 20 Gower Street, London, WC1E 6BT, UK
| | - Tom Pope
- Department of Chemistry, University College London, 20 Gower Street, London, WC1E 6BT, UK
| | - Ben Slater
- Department of Chemistry, University College London, 20 Gower Street, London, WC1E 6BT, UK
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70
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Wang Y, Liu H, Pan Q, Ding N, Yang C, Zhang Z, Jia C, Li Z, Liu J, Zhao Y. Construction of Thiazolo[5,4- d]thiazole-based Two-Dimensional Network for Efficient Photocatalytic CO 2 Reduction. ACS APPLIED MATERIALS & INTERFACES 2020; 12:46483-46489. [PMID: 32962337 DOI: 10.1021/acsami.0c12173] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The efficient conversion of CO2 to chemical fuels driven by solar energy is still a challenging research area in photosynthesis, in which the conversion efficiency greatly relies on photocatalytic coenzyme NADH regeneration. Herein, a photocatalyst/biocatalyst synergetic system based on a conjugated microporous polymer (CMP) was prepared for sustainable and highly selective photocatalytic reduction of CO2 to methanol. Two thiazolo[5,4-d]thiazole-linked CMPs (TZTZ-TA and TZTZ-TP) were designed and synthesized as photocatalysts. Slight skeleton modification led to a great difference in their photocatalytic performance. Triazine-based TZTZ-TA exhibited an unprecedentedly high NADH regeneration efficiency of 82.0% yield within 5 min. Furthermore, the in situ photocatalytic NADH regeneration system could integrate with three consecutive enzymes for efficient conversion of CO2 into methanol. This CMP-enzyme hybrid system provides a new avenue for accomplishing the liquid sunshine from CO2.
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Affiliation(s)
- Yuancheng Wang
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Hui Liu
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Qingyan Pan
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Naixiu Ding
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Chunming Yang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 239 Zhang Heng Road, Pudong New District, Shanghai 201204, China
| | - Zhaohui Zhang
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Changchao Jia
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhibo Li
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jian Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yingjie Zhao
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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71
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Schick THG, Rominger F, Mastalerz M. Examination of the Dynamic Covalent Chemistry of [2 + 3]-Imine Cages. J Org Chem 2020; 85:13757-13771. [PMID: 32933246 PMCID: PMC7659045 DOI: 10.1021/acs.joc.0c01887] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The synthesis of shape-persistent organic cage compounds by the formation of imine bonds opens the possibility to realize cages of different sizes, geometries, topologies, and functions. It is generally assumed that the imine bond is rather chemically labile allowing a self-correction mechanism until thermodynamic equilibrium is reached, which is often the case if a cage is formed. However, there are some contradictory experimental data to this assumption. To get a deeper insight into the imine bond dynamics of covalent organic cages, we studied the formation and exchange of both dialdehydes and triamines of two different [2 + 3] imine cages with the aid of a deuterated dialdehyde molecular building block.
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Affiliation(s)
- Tobias H G Schick
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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72
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Abet V, Szczypiński FT, Little MA, Santolini V, Jones CD, Evans R, Wilson C, Wu X, Thorne MF, Bennison MJ, Cui P, Cooper AI, Jelfs KE, Slater AG. Inducing Social Self-Sorting in Organic Cages To Tune The Shape of The Internal Cavity. Angew Chem Int Ed Engl 2020; 59:16755-16763. [PMID: 32542926 PMCID: PMC7540416 DOI: 10.1002/anie.202007571] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Indexed: 12/22/2022]
Abstract
Many interesting target guest molecules have low symmetry, yet most methods for synthesising hosts result in highly symmetrical capsules. Methods of generating lower symmetry pores are thus required to maximise the binding affinity in host-guest complexes. Herein, we use mixtures of tetraaldehyde building blocks with cyclohexanediamine to access low-symmetry imine cages. Whether a low-energy cage is isolated can be correctly predicted from the thermodynamic preference observed in computational models. The stability of the observed structures depends on the geometrical match of the aldehyde building blocks. One bent aldehyde stands out as unable to assemble into high-symmetry cages-and the same aldehyde generates low-symmetry socially self-sorted cages when combined with a linear aldehyde. We exploit this finding to synthesise a family of low-symmetry cages containing heteroatoms, illustrating that pores of varying geometries and surface chemistries may be reliably accessed through computational prediction and self-sorting.
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Affiliation(s)
- Valentina Abet
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Filip T. Szczypiński
- Department of ChemistryImperial College LondonMolecular Sciences Research HubWhite City CampusLondonW12 0BZUK
| | - Marc A. Little
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Valentina Santolini
- Department of ChemistryImperial College LondonMolecular Sciences Research HubWhite City CampusLondonW12 0BZUK
| | - Christopher D. Jones
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Robert Evans
- Aston Institute of Materials Research, School of Engineering and Applied ScienceAston UniversityBirminghamB4 7ETUK
| | - Craig Wilson
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Xiaofeng Wu
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Michael F. Thorne
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Michael J. Bennison
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Peng Cui
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Andrew I. Cooper
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Kim E. Jelfs
- Department of ChemistryImperial College LondonMolecular Sciences Research HubWhite City CampusLondonW12 0BZUK
| | - Anna G. Slater
- Department of Chemistry and Materials Innovation FactoryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
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73
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Greenaway RL, Jelfs KE. High-Throughput Approaches for the Discovery of Supramolecular Organic Cages. Chempluschem 2020; 85:1813-1823. [PMID: 32833311 DOI: 10.1002/cplu.202000445] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/27/2020] [Indexed: 12/21/2022]
Abstract
The assembly of complex molecules, such as organic cages, can be achieved through supramolecular and dynamic covalent strategies. Their use in a range of applications has been demonstrated, including gas uptake, molecular separations, and in catalysis. However, the targeted design and synthesis of new species for particular applications is challenging, particularly as the systems become more complex. High-throughput computation-only and experiment-only approaches have been developed to streamline the discovery process, although are still not widely implemented. Additionally, combined hybrid workflows can dramatically accelerate the discovery process and lead to the serendipitous discovery and rationalisation of new supramolecular assemblies that would not have been designed based on intuition alone. This Minireview focuses on the advances in high-throughput approaches that have been developed and applied in the discovery of supramolecular organic cages.
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Affiliation(s)
- Rebecca L Greenaway
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, London, W12 0BZ, United Kingdom
| | - Kim E Jelfs
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, London, W12 0BZ, United Kingdom
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74
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Krause S, Feringa BL. Towards artificial molecular factories from framework-embedded molecular machines. Nat Rev Chem 2020. [DOI: 10.1038/s41570-020-0209-9] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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75
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Krause S, Hosono N, Kitagawa S. Chemistry of Soft Porous Crystals: Structural Dynamics and Gas Adsorption Properties. Angew Chem Int Ed Engl 2020; 59:15325-15341. [DOI: 10.1002/anie.202004535] [Citation(s) in RCA: 128] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Simon Krause
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Nobuhiko Hosono
- Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo, Kashiwa Chiba 277-8561 Japan
| | - Susumu Kitagawa
- Institute for Integrated Cell-Material Sciences Institute for Advanced Study Kyoto University, Ushinomiya, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
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76
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Krause S, Hosono N, Kitagawa S. Die Chemie verformbarer poröser Kristalle – Strukturdynamik und Gasadsorptionseigenschaften. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004535] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Simon Krause
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747 AG Groningen Niederlande
| | - Nobuhiko Hosono
- Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo, Kashiwa Chiba 277-8561 Japan
| | - Susumu Kitagawa
- Institute for Integrated Cell-Material Sciences Institute for Advanced Study Kyoto University, Ushinomiya, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
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77
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Abet V, Szczypiński FT, Little MA, Santolini V, Jones CD, Evans R, Wilson C, Wu X, Thorne MF, Bennison MJ, Cui P, Cooper AI, Jelfs KE, Slater AG. Inducing Social Self‐Sorting in Organic Cages To Tune The Shape of The Internal Cavity. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Valentina Abet
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Filip T. Szczypiński
- Department of ChemistryImperial College LondonMolecular Sciences Research Hub White City Campus London W12 0BZ UK
| | - Marc A. Little
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Valentina Santolini
- Department of ChemistryImperial College LondonMolecular Sciences Research Hub White City Campus London W12 0BZ UK
| | - Christopher D. Jones
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Robert Evans
- Aston Institute of Materials Research, School of Engineering and Applied ScienceAston University Birmingham B4 7ET UK
| | - Craig Wilson
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Xiaofeng Wu
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Michael F. Thorne
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Michael J. Bennison
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Peng Cui
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Andrew I. Cooper
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Kim E. Jelfs
- Department of ChemistryImperial College LondonMolecular Sciences Research Hub White City Campus London W12 0BZ UK
| | - Anna G. Slater
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
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78
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Young TA, Gheorghe R, Duarte F. cgbind: A Python Module and Web App for Automated Metallocage Construction and Host–Guest Characterization. J Chem Inf Model 2020; 60:3546-3557. [DOI: 10.1021/acs.jcim.0c00519] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tom A. Young
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Razvan Gheorghe
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Fernanda Duarte
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
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79
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Sharafi M, McKay KT, Ivancic M, McCarthy DR, Dudkina N, Murphy KE, Rajappan SC, Campbell JP, Shen Y, Badireddy AR, Li J, Schneebeli ST. Size-selective Catalytic Polymer Acylation with a Molecular Tetrahedron. Chem 2020; 6:1469-1494. [PMID: 32728651 PMCID: PMC7388586 DOI: 10.1016/j.chempr.2020.05.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Selective catalysis at the molecular level represents a cornerstone of chemical synthesis. However, it still remains an open question how to elevate tunable catalysis to larger length scales to functionalize whole polymer chains in a selective manner. We now report a hydrazone-linked tetrahedron with wide openings, which acts as a catalyst to size-selectively functionalize polydisperse polymer mixtures. Our experimental and computational evidence supports a dual role of the hydrazone-linked tetrahedron. To accelerate functionalization of the polymer substrates, the tetrahedron (i) unfolds the polymer substrates and/or breaks the polymer aggregates as well as (ii) enables target sites (amino groups) on the polymers to coordinate with catalytic units (triglyme) attached to the tetrahedron. With the tetrahedron as the catalyst, we find that the reactivity of the shorter polymers increases selectively. Our findings enable the possibility to engineer hydrolytically stable molecular polyhedra as organocatalysts for size-selective polymer modification.
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Affiliation(s)
- Mona Sharafi
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Kyle T McKay
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Monika Ivancic
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Dillon R McCarthy
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Natavan Dudkina
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Kyle E Murphy
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Sinu C Rajappan
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Joseph P Campbell
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Yuxiang Shen
- Department of Civil and Environmental Engineering, University of Vermont, Burlington, VT 05405
| | - Appala Raju Badireddy
- Department of Civil and Environmental Engineering, University of Vermont, Burlington, VT 05405
| | - Jianing Li
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
| | - Severin T Schneebeli
- Department of Chemistry, University of Vermont, Burlington, VT 05405, USA
- Lead Contact
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80
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A nanomaterials discovery robot for the Darwinian evolution of shape programmable gold nanoparticles. Nat Commun 2020; 11:2771. [PMID: 32488034 PMCID: PMC7265452 DOI: 10.1038/s41467-020-16501-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 04/21/2020] [Indexed: 12/11/2022] Open
Abstract
The fabrication of nanomaterials from the top-down gives precise structures but it is costly, whereas bottom-up assembly methods are found by trial and error. Nature evolves materials discovery by refining and transmitting the blueprints using DNA mutations autonomously. Genetically inspired optimisation has been used in a range of applications, from catalysis to light emitting materials, but these are not autonomous, and do not use physical mutations. Here we present an autonomously driven materials-evolution robotic platform that can reliably optimise the conditions to produce gold-nanoparticles over many cycles, discovering new synthetic conditions for known nanoparticle shapes using the opto-electronic properties as a driver. Not only can we reliably discover a method, encoded digitally to synthesise these materials, we can seed in materials from preceding generations to engineer more sophisticated architectures. Over three independent cycles of evolution we show our autonomous system can produce spherical nanoparticles, rods, and finally octahedral nanoparticles by using our optimized rods as seeds.
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81
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Kravchenko O, Varava A, Pokorny FT, Devaurs D, Kavraki LE, Kragic D. A Robotics-Inspired Screening Algorithm for Molecular Caging Prediction. J Chem Inf Model 2020; 60:1302-1316. [PMID: 32130862 PMCID: PMC7307881 DOI: 10.1021/acs.jcim.9b00945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
![]()
We define a molecular caging complex as a pair
of molecules in which one molecule (the “host” or “cage”)
possesses a cavity that can encapsulate the other molecule (the “guest”)
and prevent it from escaping. Molecular caging complexes can be useful
in applications such as molecular shape sorting, drug delivery, and
molecular immobilization in materials science, to name just a few.
However, the design and computational discovery of new caging complexes
is a challenging task, as it is hard to predict whether one molecule
can encapsulate another because their shapes can be quite complex.
In this paper, we propose a computational screening method that predicts
whether a given pair of molecules form a caging complex. Our method
is based on a caging verification algorithm that was designed by our
group for applications in robotic manipulation. We tested our algorithm
on three pairs of molecules that were previously described in a pioneering
work on molecular caging complexes and found that our results are
fully consistent with the previously reported ones. Furthermore, we
performed a screening experiment on a data set consisting of 46 hosts
and four guests and used our algorithm to predict which pairs are
likely to form caging complexes. Our method is computationally efficient
and can be integrated into a screening pipeline to complement experimental
techniques.
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Affiliation(s)
- Oleksandr Kravchenko
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biology and Health (CBH), KTH Royal Institute of Technology, 11428 Stockholm, Sweden
| | - Anastasiia Varava
- Division of Robotics, Perception and Learning (RPL), School of Electrical Engineering and Computer Science (EECS), KTH Royal Institute of Technology, 10044 Stockholm, Sweden
| | - Florian T Pokorny
- Division of Robotics, Perception and Learning (RPL), School of Electrical Engineering and Computer Science (EECS), KTH Royal Institute of Technology, 10044 Stockholm, Sweden
| | - Didier Devaurs
- Univ. Grenoble Alpes, CNRS, Inria, Grenoble INP (Institute of Engineering, Université Grenoble Alpes), LJK, 38000 Grenoble, France
| | - Lydia E Kavraki
- Department of Computer Science, Rice University, Houston, Texas 77005, United States
| | - Danica Kragic
- Division of Robotics, Perception and Learning (RPL), School of Electrical Engineering and Computer Science (EECS), KTH Royal Institute of Technology, 10044 Stockholm, Sweden
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82
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Greenaway RL, Santolini V, Szczypiński FT, Bennison MJ, Little MA, Marsh A, Jelfs KE, Cooper AI. Organic Cage Dumbbells. Chemistry 2020; 26:3718-3722. [PMID: 32011048 DOI: 10.1002/chem.201905623] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Indexed: 01/22/2023]
Abstract
Molecular dumbbells with organic cage capping units were synthesised via a multi-component imine condensation between a tri-topic amine and di- and tetra-topic aldehydes. This is an example of self-sorting, which can be rationalised by computational modelling.
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Affiliation(s)
- Rebecca L Greenaway
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Valentina Santolini
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK
| | - Filip T Szczypiński
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK
| | - Michael J Bennison
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Marc A Little
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Andrew Marsh
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK
| | - Andrew I Cooper
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
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83
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Egleston BD, Luzyanin KV, Brand MC, Clowes R, Briggs ME, Greenaway RL, Cooper AI. Controlling Gas Selectivity in Molecular Porous Liquids by Tuning the Cage Window Size. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914037] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Benjamin D. Egleston
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | | | - Michael C. Brand
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Rob Clowes
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Michael E. Briggs
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Rebecca L. Greenaway
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Andrew I. Cooper
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
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84
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Egleston BD, Luzyanin KV, Brand MC, Clowes R, Briggs ME, Greenaway RL, Cooper AI. Controlling Gas Selectivity in Molecular Porous Liquids by Tuning the Cage Window Size. Angew Chem Int Ed Engl 2020; 59:7362-7366. [DOI: 10.1002/anie.201914037] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Benjamin D. Egleston
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | | | - Michael C. Brand
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Rob Clowes
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Michael E. Briggs
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
| | - Rebecca L. Greenaway
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Andrew I. Cooper
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool Oxford Street Liverpool L7 3NY UK
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85
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Lauer JC, Pang Z, Janßen P, Rominger F, Kirschbaum T, Elstner M, Mastalerz M. Host-Guest Chemistry of Truncated Tetrahedral Imine Cages with Ammonium Ions. ChemistryOpen 2020; 9:183-190. [PMID: 32025463 PMCID: PMC6996569 DOI: 10.1002/open.201900357] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/10/2020] [Indexed: 01/29/2023] Open
Abstract
Three shape-persistent [4+4] imine cages with truncated tetrahedral geometry with different window sizes were studied as hosts for the encapsulation of tetra-n-alkylammonium salts of various bulkiness. In various solvents the cages behave differently. For instance, in dichloromethane the cage with smallest window size takes up NEt4+ but not NMe4+, which is in contrast to the two cages with larger windows hosting both ions. To find out the reason for this, kinetic experiments were carried out to determine the velocity of uptake but also to deduce the activation barriers for these processes. To support the experimental results, calculations for the guest uptakes have been performed by molecular mechanics' simulations. Finally, the complexation of pharmaceutical interested compounds, such as acetylcholine, muscarine or denatonium have been determined by NMR experiments.
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Affiliation(s)
- Jochen C. Lauer
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Ziwei Pang
- Institut für Physikalische Chemie Theoretische Chemische BiologieUniversität Karlsruhe Geb. 30.44Kaiserstr. 1276131KarlsruheGermany
| | - Paul Janßen
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Tobias Kirschbaum
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Marcus Elstner
- Institut für Physikalische Chemie Theoretische Chemische BiologieUniversität Karlsruhe Geb. 30.44Kaiserstr. 1276131KarlsruheGermany
| | - Michael Mastalerz
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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86
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Computational discovery of molecular C 60 encapsulants with an evolutionary algorithm. Commun Chem 2020; 3:10. [PMID: 36703408 PMCID: PMC9814092 DOI: 10.1038/s42004-020-0255-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 12/20/2019] [Indexed: 01/29/2023] Open
Abstract
Computation is playing an increasing role in the discovery of materials, including supramolecular materials such as encapsulants. In this work, a function-led computational discovery using an evolutionary algorithm is used to find potential fullerene (C60) encapsulants within the chemical space of porous organic cages. We find that the promising host cages for C60 evolve over the simulations towards systems that share features such as the correct cavity size to host C60, planar tri-topic aldehyde building blocks with a small number of rotational bonds, di-topic amine linkers with functionality on adjacent carbon atoms, high structural symmetry, and strong complex binding affinity towards C60. The proposed cages are chemically feasible and similar to cages already present in the literature, helping to increase the likelihood of the future synthetic realisation of these predictions. The presented approach is generalisable and can be tailored to target a wide range of properties in molecular material systems.
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87
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Affiliation(s)
- Marco Foscato
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Vidar R. Jensen
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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88
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Zhu G, O'Nolan D, Lively RP. Molecularly Mixed Composite Membranes: Challenges and Opportunities. Chemistry 2019; 26:3464-3473. [PMID: 31549449 DOI: 10.1002/chem.201903519] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/16/2019] [Indexed: 12/22/2022]
Abstract
The fabrication of porous molecules, such as metal-organic polyhedra (MOPs), porous organic cages (POCs) and others, has given rise to the potential for creating "solid solutions" of molecular fillers and polymers. Such solid solutions circumvent longstanding interface issues associated with mixed matrix membranes (MMMs), and are referred to as molecularly mixed composite membranes (MMCMs) to distinguish them from traditional two-phase MMMs. Early investigations of MMCMs highlight the advantages of solid solutions over MMMs, including dispersion of the filler, anti-plasticization of the polymer network, and removal of deleterious interfacial issues. However, the exact microscopic structure as well as the transport modality in this new class of membrane are not well understood. Moreover, there are clear engineering challenges that need to be addressed for MMCMs to transition into the field. In this Minireview, the authors outline several scientific and technological challenges associated with the aforementioned questions and their suggestions to tackle them.
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Affiliation(s)
- Guanghui Zhu
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA, 30332, USA
| | - Daniel O'Nolan
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA, 30332, USA
| | - Ryan P Lively
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA, 30332, USA
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89
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Kanekal KH, Bereau T. Resolution limit of data-driven coarse-grained models spanning chemical space. J Chem Phys 2019; 151:164106. [DOI: 10.1063/1.5119101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Kiran H. Kanekal
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Tristan Bereau
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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90
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Stubbs C, Congdon T, Davis J, Lester D, Richards SJ, Gibson MI. High-Throughput Tertiary Amine Deoxygenated Photopolymerizations for Synthesizing Polymer Libraries. Macromolecules 2019; 52:7603-7612. [PMID: 31656323 PMCID: PMC6812069 DOI: 10.1021/acs.macromol.9b01714] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Indexed: 12/19/2022]
Abstract
The huge chemical space potential of synthetic polymers means that in many studies only a small parameter range can be realistically synthesized in a short time and hence the "best" formulations may not be optimum. Throughput is traditionally limited by the need for deoxygenation in radical polymerizations, but advances in photopolymerization now provide opportunities for "in-air" polymerizations. Here, we have developed a protocol using liquid handling robots (or multichannel pipettes) with blue light photolysis of reversible addition fragmentation chain transfer agents and tertiary amine deoxygenation to enable the synthesis of polymer libraries in industry-standard 96-well plates with no specialized infrastructure and no degassing step. The roles of solvents and amine deoxygenators are explored to optimize the polymerization, particularly to look at alternatives to dimethyl sulfoxide (DMSO) for hydrophobic monomer (co)polymerization. DMSO is shown to aid the degassing process but is not easy to remove and hence prevents isolation of pure polymers. In contrast, using dioxane in-plate evaporation or precipitation of the tertiary amine allowed isolation of polymers in-plate. This removed all reaction components yielding pure polymers, which is not easily achieved with systems using metal catalysts and secondary reductants, such as ascorbic acid. As an example of the throughput, in just under 40 h, 392 polymers were synthesized and subsequently analyzed direct from plates by a 96-well plate sampling size exclusion chromatography system to demonstrate reproducibility. Due to less efficient degassing in dioxane (compared to DMSO), the molecular weight and dispersity control were limited in some cases (with acrylates giving the lowest dispersities), but the key aim of this system is to access hundreds of polymers quickly and in a format needed to enable testing. This method enables easy exploration of chemical space and development of screening libraries to identify hits for further study using precision polymerization methods.
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Affiliation(s)
- Christopher Stubbs
- Department
of Chemistry and Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Thomas Congdon
- Department
of Chemistry and Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Jessica Davis
- Department
of Chemistry and Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Daniel Lester
- Department
of Chemistry and Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Sarah-Jane Richards
- Department
of Chemistry and Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Matthew I. Gibson
- Department
of Chemistry and Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
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91
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From Concept to Crystals via Prediction: Multi‐Component Organic Cage Pots by Social Self‐Sorting. Angew Chem Int Ed Engl 2019; 58:16275-16281. [DOI: 10.1002/anie.201909237] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/29/2019] [Indexed: 12/11/2022]
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92
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Greenaway RL, Santolini V, Pulido A, Little MA, Alston BM, Briggs ME, Day GM, Cooper AI, Jelfs KE. From Concept to Crystals via Prediction: Multi‐Component Organic Cage Pots by Social Self‐Sorting. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909237] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Rebecca L. Greenaway
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Valentina Santolini
- Department of ChemistryImperial College LondonMolecular Sciences Research Hub White City Campus, Wood Lane London W12 0BZ UK
| | - Angeles Pulido
- School of ChemistryUniversity of Southampton Highfield Southampton SO17 1BJ UK
- Current address: The Cambridge Crystallographic Data Centre 12 Union Road Cambridge CB2 1EZ UK
| | - Marc A. Little
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Ben M. Alston
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Michael E. Briggs
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Graeme M. Day
- School of ChemistryUniversity of Southampton Highfield Southampton SO17 1BJ UK
| | - Andrew I. Cooper
- Department of Chemistry and Materials Innovation FactoryUniversity of Liverpool 51 Oxford Street Liverpool L7 3NY UK
| | - Kim E. Jelfs
- Department of ChemistryImperial College LondonMolecular Sciences Research Hub White City Campus, Wood Lane London W12 0BZ UK
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93
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Kearsey RJ, Alston BM, Briggs ME, Greenaway RL, Cooper AI. Accelerated robotic discovery of type II porous liquids. Chem Sci 2019; 10:9454-9465. [PMID: 32110304 PMCID: PMC7017875 DOI: 10.1039/c9sc03316e] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 08/19/2019] [Indexed: 01/24/2023] Open
Abstract
High-throughput automation was used to streamline the synthesis, characterisation, and solubility testing, of new Type II porous liquids, accelerating their discovery.
Porous liquids are an emerging class of materials and to date little is known about how to best design their properties. For example, bulky solvents are required that are size-excluded from the pores in the liquid, along with high concentrations of the porous component, but both of these factors may also contribute to higher viscosities, which are undesirable. Hence, the inherent multivariate nature of porous liquids makes them amenable to high-throughput optimisation strategies. Here we develop a high-throughput robotic workflow, encompassing the synthesis, characterisation and property testing of highly-soluble, vertex-disordered porous organic cages dissolved in a range of cavity-excluded solvents. As a result, we identified 29 cage–solvent combinations that combine both higher cage-cavity concentrations and more acceptable carrier solvents than the best previous examples. The most soluble materials gave three times the pore concentration of the best previously reported scrambled cage porous liquid, as demonstrated by increased gas uptake. We were also able to explore alternative methods for gas capture and release, including liberation of the gas by increasing the temperature. We also found that porous liquids can form gels at higher concentrations, trapping the gas in the pores, which could have potential applications in gas storage and transportation.
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Affiliation(s)
- Rachel J Kearsey
- Department of Chemistry and Materials Innovation Factory , University of Liverpool , Crown Street , Liverpool , L69 7ZD , UK . ;
| | - Ben M Alston
- Department of Chemistry and Materials Innovation Factory , University of Liverpool , Crown Street , Liverpool , L69 7ZD , UK . ;
| | - Michael E Briggs
- Department of Chemistry and Materials Innovation Factory , University of Liverpool , Crown Street , Liverpool , L69 7ZD , UK . ;
| | - Rebecca L Greenaway
- Department of Chemistry and Materials Innovation Factory , University of Liverpool , Crown Street , Liverpool , L69 7ZD , UK . ;
| | - Andrew I Cooper
- Department of Chemistry and Materials Innovation Factory , University of Liverpool , Crown Street , Liverpool , L69 7ZD , UK . ;
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94
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Lavendomme R, Ronson TK, Nitschke JR. Metal and Organic Templates Together Control the Size of Covalent Macrocycles and Cages. J Am Chem Soc 2019; 141:12147-12158. [PMID: 31287669 PMCID: PMC6756589 DOI: 10.1021/jacs.9b06182] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
![]()
Covalent
macrocycles and three-dimensional cages were prepared by the self-assembly
of di- or tritopic anilines and 2,6-diformylpyridine subcomponents
around palladium(II) templates. The resulting 2,6-bis(imino)pyridyl-PdII motif contains a tridentate ligand, leaving a free coordination
site on the PdII centers, which points inward. The binding
of ligands to the free coordination sites in these assemblies was
found to alter the product stability, and multitopic ligands could
be used to control product size. Multitopic ligands also bridged metallomacrocycles
to form higher-order supramolecular assemblies, which were characterized
via NMR spectroscopy, mass spectrometry, and X-ray crystallography.
An efficient method was developed to reduce the imine bonds to secondary
amines, leading to fully organic covalent macrocycles and cages that
were inaccessible through other means.
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Affiliation(s)
- Roy Lavendomme
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Tanya K Ronson
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Jonathan R Nitschke
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
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95
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Pattillo CC, Moore JS. A tetrahedral molecular cage with a responsive vertex. Chem Sci 2019; 10:7043-7048. [PMID: 31588271 PMCID: PMC6676470 DOI: 10.1039/c9sc02047k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 06/09/2019] [Indexed: 12/27/2022] Open
Abstract
Dynamic covalent chemistry (DCC) is a widely used method for the self-assembly of three-dimensional molecular architectures. The orthogonality of dynamic reactions is emerging as a versatile strategy for controlling product distributions in DCC, yet the application of this approach to the synthesis of 3D organic molecular cages is limited. We report the first system which employs the orthogonality of alkyne metathesis and dynamic imine exchange to prepare a molecular cage with a reversibly removable vertex. This study demonstrates the rational and controlled application of chemical orthogonality in DCC to prepare organic cages of expanded functionality which respond to chemical stimuli.
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Affiliation(s)
- Christopher C Pattillo
- Department of Chemistry , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , USA .
| | - Jeffrey S Moore
- Department of Chemistry , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , USA .
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96
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Häse F, Roch LM, Aspuru-Guzik A. Next-Generation Experimentation with Self-Driving Laboratories. TRENDS IN CHEMISTRY 2019. [DOI: 10.1016/j.trechm.2019.02.007] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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97
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Harnessing liquid-in-liquid printing and micropatterned substrates to fabricate 3-dimensional all-liquid fluidic devices. Nat Commun 2019; 10:1095. [PMID: 30842556 PMCID: PMC6403306 DOI: 10.1038/s41467-019-09042-y] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/06/2019] [Indexed: 11/08/2022] Open
Abstract
Systems comprised of immiscible liquids held in non-equilibrium shapes by the interfacial assembly and jamming of nanoparticle-polymer surfactants have significant potential to advance catalysis, chemical separations, energy storage and conversion. Spatially directing functionality within them and coupling processes in both phases remains a challenge. Here, we exploit nanoclay-polymer surfactant assemblies at an oil-water interface to produce a semi-permeable membrane between the liquids, and from them all-liquid fluidic devices with bespoke properties. Flow channels are fabricated using micropatterned 2D substrates and liquid-in-liquid 3D printing. The anionic walls of the device can be functionalized with cationic small molecules, enzymes, and colloidal nanocrystal catalysts. Multi-step chemical transformations can be conducted within the channels under flow, as can selective mass transport across the liquid-liquid interface for in-line separations. These all-liquid systems become automated using pumps, detectors, and control systems, revealing a latent ability for chemical logic and learning.
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98
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Schick THG, Lauer JC, Rominger F, Mastalerz M. Transformation of Imine Cages into Hydrocarbon Cages. Angew Chem Int Ed Engl 2019; 58:1768-1773. [PMID: 30557460 PMCID: PMC6470955 DOI: 10.1002/anie.201814243] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Indexed: 01/04/2023]
Abstract
In contrast to organic cages which are formed by exploiting dynamic covalent chemistry, such as boronic ester cages, imine cages, or disulfide cages, those with a fully carbonaceous backbone are rarer. With the exception of alkyne metathesis based approaches, the vast majority of hydrocarbon cages need to be synthesized by kinetically controlled bond formation. This strategy implies a multiple step synthesis and no correction mechanism in the final macrocyclization step, both of which are responsible for low overall yields. Whereas for smaller cages the intrinsic drawbacks are not always obvious, larger cages are seldom synthesized in yields beyond a few tenths of a percent. Presented herein is a three-step method to convert imine cages into hydrocarbon cages. The method has been successfully applied to even larger structures such as derivatives of C72 H72 , an unknown cage suggested by Fritz Vögtle more than 20 years ago.
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Affiliation(s)
- Tobias H. G. Schick
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Jochen C. Lauer
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Michael Mastalerz
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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99
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100
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Peng L, Zhu Q, Wu P, Wu X, Cai W. High-throughput computational screening of metal–organic frameworks with topological diversity for hexane isomer separations. Phys Chem Chem Phys 2019; 21:8508-8516. [DOI: 10.1039/c8cp07527a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A large-scale computational screening of 13 512 MOFs with topological diversity was carried out to search the optimal candidates for the simultaneous separation of two dimethyl butanes from the quinary equimolar mixture of hexane isomers.
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Affiliation(s)
- Liang Peng
- School of Chemistry
- Chemical Engineering & Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Qiao Zhu
- School of Chemistry
- Chemical Engineering & Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Pinglian Wu
- School of Chemistry
- Chemical Engineering & Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Xuanjun Wu
- School of Chemistry
- Chemical Engineering & Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Weiquan Cai
- School of Chemistry
- Chemical Engineering & Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
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