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Roy S, Laha J, Reja A, Das D. Allosteric Control of the Catalytic Properties of Dipeptide-Based Supramolecular Assemblies. J Am Chem Soc 2024. [PMID: 39088245 DOI: 10.1021/jacs.4c06447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
Allostery, as seen in extant biology, governs the activity regulation of enzymes through the redistribution of conformational equilibria upon binding an effector. Herein, a minimal design is demonstrated where a dipeptide can exploit dynamic imine linkage to condense with simple aldehydes to access spherical aggregates as catalytically active states, which facilitates an orthogonal reaction due to the closer proximity of catalytic residues (imidazoles). The allosteric site (amine) of the minimal catalyst can concomitantly bind to an inhibitor via a dynamic exchange, which leads to the alternation of the energy landscape of the self-assembled state, resulting in downregulation of catalytic activity. Further, temporal control over allosteric regulation is realized via a feedback-controlled autonomous reaction network that utilizes the hydrolytic activity of the (in)active state as a function of time.
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Affiliation(s)
- Soumili Roy
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India
| | - Janmejay Laha
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India
| | - Antara Reja
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India
| | - Dibyendu Das
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India
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2
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DiNardi RG, Rasheed S, Capomolla SS, Chak MH, Middleton IA, Macreadie LK, Violi JP, Donald WA, Lusby PJ, Beves JE. Photoswitchable Catalysis by a Self-Assembled Molecular Cage. J Am Chem Soc 2024. [PMID: 39051845 DOI: 10.1021/jacs.4c04846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
A heteroleptic [Pd2L2L'2]4+ coordination cage containing a photoswitchable azobenzene-derived ligand catalyzes the Michael addition reaction between methyl vinyl ketone and benzoyl nitromethane within its cavity. The corresponding homoleptic cages are catalytically inactive. The heteroleptic cage can be reversibly disassembled and reassembled using 530 and 405 nm light, respectively, allowing catalysis within the cage to be switched OFF and ON at will.
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Affiliation(s)
- Ray G DiNardi
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Samina Rasheed
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Simona S Capomolla
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Man Him Chak
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Isis A Middleton
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Lauren K Macreadie
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Jake P Violi
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - William A Donald
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Paul J Lusby
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, Scotland EH9 3FJ, U.K
| | - Jonathon E Beves
- School of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
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3
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Paul I, Valiyev I, Ghosh A, Schmittel M. Dynamic negative allosteric effect: regulation of catalysis via multicomponent rotor speed. Chem Commun (Camb) 2024; 60:7085-7088. [PMID: 38896476 DOI: 10.1039/d4cc02144d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Nanorotor R1 (420 kHz) was assembled from five components utilizing three orthogonal interactions. Post-modification at the distal position generated the advanced six component rotor R2 (45 kHz). The decrease in R2 speed leads to the inhibition of a three-component reaction by reducing catalyst release.
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Affiliation(s)
- Indrajit Paul
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
| | - Isa Valiyev
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
| | - Amit Ghosh
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
| | - Michael Schmittel
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
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4
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Yu Y, O'Neill RT, Boulatov R, Widenhoefer RA, Craig SL. Allosteric control of olefin isomerization kinetics via remote metal binding and its mechanochemical analysis. Nat Commun 2023; 14:5074. [PMID: 37604905 PMCID: PMC10442431 DOI: 10.1038/s41467-023-40842-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 08/14/2023] [Indexed: 08/23/2023] Open
Abstract
Allosteric control of reaction thermodynamics is well understood, but the mechanisms by which changes in local geometries of receptor sites lower activation reaction barriers in electronically uncoupled, remote reaction moieties remain relatively unexplored. Here we report a molecular scaffold in which the rate of thermal E-to-Z isomerization of an alkene increases by a factor of as much as 104 in response to fast binding of a metal ion to a remote receptor site. A mechanochemical model of the olefin coupled to a compressive harmonic spring reproduces the observed acceleration quantitatively, adding the studied isomerization to the very few reactions demonstrated to be sensitive to extrinsic compressive force. The work validates experimentally the generalization of mechanochemical kinetics to compressive loads and demonstrates that the formalism of force-coupled reactivity offers a productive framework for the quantitative analysis of the molecular basis of allosteric control of reaction kinetics. Important differences in the effects of compressive vs. tensile force on the kinetic stabilities of molecules are discussed.
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Affiliation(s)
- Yichen Yu
- Department of Chemistry, Duke University, Durham, NC, 27708, USA
| | - Robert T O'Neill
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Roman Boulatov
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
| | | | - Stephen L Craig
- Department of Chemistry, Duke University, Durham, NC, 27708, USA.
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5
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Switchable aqueous catalytic systems for organic transformations. Commun Chem 2022; 5:115. [PMID: 36697818 PMCID: PMC9814960 DOI: 10.1038/s42004-022-00734-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/12/2022] [Indexed: 01/28/2023] Open
Abstract
In living organisms, enzyme catalysis takes place in aqueous media with extraordinary spatiotemporal control and precision. The mechanistic knowledge of enzyme catalysis and related approaches of creating a suitable microenvironment for efficient chemical transformations have been an important source of inspiration for the design of biomimetic artificial catalysts. However, in "nature-like" environments, it has proven difficult for artificial catalysts to promote effective chemical transformations. Besides, control over reaction rate and selectivity are important for smart application purposes. These can be achieved via incorporation of stimuli-responsive features into the structure of smart catalytic systems. Here, we summarize such catalytic systems whose activity can be switched 'on' or 'off' by the application of stimuli in aqueous environments. We describe the switchable catalytic systems capable of performing organic transformations with classification in accordance to the stimulating agent. Switchable catalytic activity in aqueous environments provides new possibilities for the development of smart materials for biomedicine and chemical biology. Moreover, engineering of aqueous catalytic systems can be expected to grow in the coming years with a further broadening of its application to diverse fields.
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6
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Coleman BD, d'Aquino AI, Kean Z, Wang Y, Hedlund Orbeck JK, Stern CL, Mirkin CA. Structurally Dynamic Crystalline 1D Coordination Polymers Enabled via the Weak-Link Approach. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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7
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Howlader P, Schmittel M. Heteroleptic metallosupramolecular aggregates /complexation for supramolecular catalysis. Beilstein J Org Chem 2022; 18:597-630. [PMID: 35673407 PMCID: PMC9152274 DOI: 10.3762/bjoc.18.62] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/11/2022] [Indexed: 12/25/2022] Open
Abstract
Supramolecular catalysis is reviewed with an eye on heteroleptic aggregates/complexation. Since most of the current metallosupramolecular catalytic systems are homoleptic in nature, the idea of breaking/reducing symmetry has ignited a vivid search for heteroleptic aggregates that are made up by different components. Their higher degree of functional diversity and structural heterogeneity allows, as demonstrated by Nature by the multicomponent ATP synthase motor, a more detailed and refined configuration of purposeful machinery. Furthermore, (metallo)supramolecular catalysis is shown to extend beyond the single "supramolecular unit" and to reach far into the field and concepts of systems chemistry and information science.
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Affiliation(s)
- Prodip Howlader
- Center of Micro- and Nanochemistry and (Bio)Technology, Universität Siegen, Organische Chemie I, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and (Bio)Technology, Universität Siegen, Organische Chemie I, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
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8
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Nguyen T, Tran NM, Park IH, Yoo H. Heteroleptic Triple-Stranded Metallosupramolecules with Hydrophobic Inner Voids. ACS OMEGA 2022; 7:13067-13074. [PMID: 35474782 PMCID: PMC9026104 DOI: 10.1021/acsomega.2c00447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
The systematic combination of well-defined coordination spheres and multiple types of ligands (heteroleptic) can lead to the generation of hierarchical metallosupramolecules with a high level of complexity and functionality. In particular, a specific multilevel coordination-driven assembly through the initiate generation of multinuclear clusters can form unique heteroleptic multiple-stranded supramolecular complexes. Herein, we report novel triple-stranded nickel-based supramolecules constructed from two different ditopic ligands ([1,1':3',1''-terphenyl]-4,4''-dicarboxylate (TP) and 2,6-pyridinedicarboxylate (PDA)) and a nickel precursor. The solid-state structures of the as-synthesized supramolecules revealed that three PDA ligands are employed to fabricate a tetranuclear ({Ni4}) cluster, and two {Ni4} clusters are assembled to form the final triple-stranded metallosupramolecules by three TP ligands. The bridging TP ligands also provide large inner voids with highly hydrophobic environments. Structural investigation of the generated complexes provided a deeper understanding of the aspects driving the formation of heteroleptic supramolecules, which is crucial for the design of multiple-strands with desired morphologies and functionalities.
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Affiliation(s)
- Thanh
Nhan Nguyen
- Department
of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea
| | - Ngoc Minh Tran
- Department
of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea
| | - In-Hyeok Park
- Graduate
School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, Republic of Korea
| | - Hyojong Yoo
- Department
of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea
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9
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Pan T, Wang Y, Xue X, Zhang C. Rational design of allosteric switchable catalysts. EXPLORATION 2022; 2:20210095. [PMCID: PMC10191014 DOI: 10.1002/exp.20210095] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 12/01/2021] [Indexed: 06/16/2023]
Affiliation(s)
- Tiezheng Pan
- State Key Laboratory of Medicinal Chemical Biology Nankai University Tianjin China
- School of Life Sciences Northwestern Polytechnical University Xi'an China
| | - Yaling Wang
- State Key Laboratory of Medicinal Chemical Biology Nankai University Tianjin China
| | - Xue Xue
- State Key Laboratory of Medicinal Chemical Biology Nankai University Tianjin China
| | - Chunqiu Zhang
- State Key Laboratory of Medicinal Chemical Biology Nankai University Tianjin China
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10
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Olivo G, Capocasa G, Del Giudice D, Lanzalunga O, Di Stefano S. New horizons for catalysis disclosed by supramolecular chemistry. Chem Soc Rev 2021; 50:7681-7724. [PMID: 34008654 DOI: 10.1039/d1cs00175b] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The adoption of a supramolecular approach in catalysis promises to address a number of unmet challenges, ranging from activity (unlocking of novel reaction pathways) to selectivity (alteration of the innate selectivity of a reaction, e.g. selective functionalization of C-H bonds) and regulation (switch ON/OFF, sequential catalysis, etc.). Supramolecular tools such as reversible association and recognition, pre-organization of reactants and stabilization of transition states upon binding offer a unique chance to achieve the above goals disclosing new horizons whose potential is being increasingly recognized and used, sometimes reaching the degree of ripeness for practical use. This review summarizes the main developments that have opened such new frontiers, with the aim of providing a guide to researchers approaching the field. We focus on artificial supramolecular catalysts of defined stoichiometry which, under homogeneous conditions, unlock outcomes that are highly difficult if not impossible to attain otherwise, namely unnatural reactivity or selectivity and catalysis regulation. The different strategies recently explored in supramolecular catalysis are concisely presented, and, for each one, a single or very few examples is/are described (mainly last 10 years, with only milestone older works discussed). The subject is divided into four sections in light of the key design principle: (i) nanoconfinement of reactants, (ii) recognition-driven catalysis, (iii) catalysis regulation by molecular machines and (iv) processive catalysis.
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Affiliation(s)
- Giorgio Olivo
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Giorgio Capocasa
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Daniele Del Giudice
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Stefano Di Stefano
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
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11
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Tran NM, Yoo H. Recent advances in heteroleptic multiple-stranded metallosupramolecules. Dalton Trans 2021; 49:11819-11827. [PMID: 32797124 DOI: 10.1039/d0dt02243h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Well-ordered combination of defined coordination spheres and multiple types of ligands (heteroleptic) in a given structure can expand the structural complexity and functional diversity of the resulting metallosupramolecules. Such heteroleptic metallosupramolecular architectures are expected to afford advanced utility in a variety of applications. In this concise review article, recent advances in the development of multi-nuclear-cluster-based heteroleptic multiple-stranded (HLMS) metallosupramolecules are summarized and demonstrated. To construct HLMS metallosupramolecules, one type of multitopic ligands can be employed for building up multiple strands, while another type of ligands can be utilized to construct multi-nuclear clusters. Most HLMS metallosupramolecules adopt helical geometries and have high molecular symmetry, which can be key factors for the structural completion. HLMS metallosupramolecules can be used as basic building blocks for the fabrication of higher-order polymeric or discrete assembly architectures with well-defined geometries.
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Affiliation(s)
- Ngoc Minh Tran
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
| | - Hyojong Yoo
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
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12
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Cheng HF, Paul MK, d'Aquino AI, Stern CL, Mirkin CA. Multi-State Dynamic Coordination Complexes Interconverted through Counterion-Controlled Phase Transfer. Inorg Chem 2021; 60:4755-4763. [PMID: 33719417 DOI: 10.1021/acs.inorgchem.0c03708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We studied a series of dynamic weak-link approach (WLA) complexes that can be shuttled between two immiscible solvents and switched between two structural states via ion exchange. Here, we established that hydrophobic anions transfer cationic, amphiphilic complexes from the aqueous phase to the organic phase, while a chloride source reverses the process. As a result of the dynamic metal coordination properties of WLA complexes, the denticity of these complexes (mono- to bi-) can be modulated as they partition into different phases. In addition, we discovered that heteroligated complexes bearing ligands of different donor strengths preferentially rearrange into two homoligated complexes that are phase-partitioned to maximize the number of stronger coordination bonds. This behavior is not observed in systems with one solvent, highlighting the dynamic and stimuli-responsive nature of hemilabile ligands in a multiphasic solvent environment. Taken together, this work shows that the highly reconfigurable WLA modality can enable the design of biphasic reaction networks or chemical separations driven by straightforward salt metathesis reactions.
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Affiliation(s)
- Ho Fung Cheng
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - McKinley K Paul
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Andrea I d'Aquino
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Charlotte L Stern
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Chad A Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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13
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Bhattacharyya A, De Sarkar S, Das A. Supramolecular Engineering and Self-Assembly Strategies in Photoredox Catalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04952] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ayan Bhattacharyya
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246. India
| | - Anindita Das
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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14
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Zhong Y, Li M, Deng M, Gong M, Xie H, Luo Y. Redox-controlled syndio-specific polymerization of styrene catalyzed by ferrocenyl functionalized half-sandwich scandium complexes. Dalton Trans 2020; 50:346-354. [PMID: 33313616 DOI: 10.1039/d0dt03680c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Redox-controlled polymerization is one of the new and efficient strategies to precisely construct the microstructures of polymeric materials, and thus has received increasing attention in the chemical community. Salt metathesis of ScCl3 with 1 equiv. of Fc(1-C9H6)Li (where Fc = ferrocenyl group), followed by the addition of 2 equiv. of LiCH2C6H4NMe2-o in THF at room temperature gave the ferrocenyl functionalized half-sandwich scandium bis(o-dimethylaminobenzyl) complex [Fc(1-C9H6)]Sc(CH2C6H4NMe2-o)2 (1) in 89% isolated yield. This complex was characterized by elemental analysis, FT-IR spectroscopy, NMR spectroscopy and single-crystal X-ray diffraction. Treatment of 1 with 1 equiv. of [Ph3C][B(C6F5)4] in THF generated the THF-coordinated cationic half-sandwich scandium mono(o-dimethylaminobenzyl) complex {[Fc(1-C9H6)]Sc(CH2C6H4NMe2-o)}{[B(C6F5)4]} (2-THF2). Switching in situ between the oxidized and reduced forms of active THF-free species (originally generated from 1/[Ph3C][B(C6F5)4] in situ) resulted in the redox-controlled syndio-specific polymerization of styrene.
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Affiliation(s)
- Yi Zhong
- School of Materials Science and Chemical Engineering, Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Ningbo University, Ningbo 315211, P. R. China.
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15
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Uthe B, Meares A, Ptaszek M, Pelton M. Solvent-dependent energy and charge transfer dynamics in hydroporphyrin-BODIPY arrays. J Chem Phys 2020; 153:074302. [PMID: 32828083 DOI: 10.1063/5.0012737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Arrays of hydroporphyrins with boron complexes of dipyrromethene (BODIPY) are a promising platform for biomedical imaging or solar energy conversion, but their photophysical properties have been relatively unexplored. In this paper, we use time-resolved fluorescence, femtosecond transient absorption spectroscopy, and density-functional-theory calculations to elucidate solvent-dependent energy and electron-transfer processes in a series of chlorin- and bacteriochlorin-BODIPY arrays. Excitation of the BODIPY moiety results in ultrafast energy transfer to the hydroporphyrin moiety, regardless of the solvent. In toluene, energy is most likely transferred via the through-space Förster mechanism from the S1 state of BODIPY to the S2 state of hydroporphyrin. In DMF, substantially faster energy transfer is observed, which implies a contribution of the through-bond Dexter mechanism. In toluene, excited hydroporphyrin components show bright fluorescence, with quantum yield and fluorescence lifetime comparable to those of the benchmark monomer, whereas in DMF, moderate to significant reduction of both quantum yield and fluorescence lifetime are observed. We attribute this quenching to photoinduced charge transfer from hydroporphyrin to BODIPY. No direct spectral signature of the charge-separated state is observed, which suggests that either (1) the charge-separated state decays very quickly to the ground state or (2) virtual charge-separated states, close in energy to S1 of hydroporphyrin, promote ultrafast internal conversion.
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Affiliation(s)
- Brian Uthe
- Department of Physics, UMBC (University of Maryland, Baltimore County), 1000 Hilltop Circle, Baltimore, Maryland 21250, USA
| | - Adam Meares
- Department of Chemistry and Biochemistry, UMBC (University of Maryland, Baltimore County), 1000 Hilltop Circle, Baltimore, Maryland 21250, USA
| | - Marcin Ptaszek
- Department of Chemistry and Biochemistry, UMBC (University of Maryland, Baltimore County), 1000 Hilltop Circle, Baltimore, Maryland 21250, USA
| | - Matthew Pelton
- Department of Physics, UMBC (University of Maryland, Baltimore County), 1000 Hilltop Circle, Baltimore, Maryland 21250, USA
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16
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Benda L, Doistau B, Rossi-Gendron C, Chamoreau LM, Hasenknopf B, Vives G. Substrate-dependent allosteric regulation by switchable catalytic molecular tweezers. Commun Chem 2019. [DOI: 10.1038/s42004-019-0246-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AbstractAllosteric regulation is exploited by biological systems to regulate the activity and/or selectivity of enzymatic reactions but remains a challenge for artificial catalysts. Here we report switchable terpy(Zn-salphen)2 molecular tweezers and their metal-dependent allosteric regulation of the acetylation of pyridinemethanol isomers. Zinc-salphen moieties can both act as a Lewis acid to activate the anhydride reagents and provide a binding site for pyridinemethanol substrates. The tweezers’ conformation can be reversibly switched between an open and a closed form by a metal ion stimulus. Both states offer distinct catalytic profiles, with closed tweezers showing superior catalytic activity towards ortho substrates, while open tweezers presenting higher rate for the acetylation of meta and para substrates. This notable substrate dependent allosteric response is rationalized by a combination of experimental results and calculations supporting a bimetallic reaction in the closed form for ortho substrate and an inhibition of the cavity for meta and para substrates.
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17
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La Porte NT, Moravec DB, Schaller RD, Hopkins MD. Light-Driven Redox Activation of CO2- and H2-Activating Complexes in a Self-Assembled Triad. J Phys Chem B 2019; 123:10980-10989. [DOI: 10.1021/acs.jpcb.9b07830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nathan T. La Porte
- Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Davis B. Moravec
- Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Richard D. Schaller
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States
| | - Michael D. Hopkins
- Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
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18
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Tahara K, Terashita N, Tokunaga K, Yabumoto S, Kikuchi JI, Ozawa Y, Abe M. Zwitterionic Mixed Valence: Internalizing Counteranions into a Biferrocenium Framework toward Molecular Expression of Half-Cells in Quantum Cellular Automata. Chemistry 2019; 25:13728-13738. [PMID: 31376186 DOI: 10.1002/chem.201902840] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/26/2019] [Indexed: 01/26/2023]
Abstract
Realization of molecular quantum cellular automata (QCA), a promising architecture for molecular computing through current-free processes, requires improved understanding and application of mixed-valence (MV) molecules. In this report, we present an electrostatic approach to creating MV subspecies through internalizing opposite charges in close proximity to MV ionic moieties. This approach is demonstrated by unsymmetrically attaching a charge-responsive boron substituent to a well-known organometallic MV complex, biferrocenium. Guest anions (CN- and F- ) bind to the Lewis acidic boron center, leading to unusual blue-shifts of the intervalence charge-transfer (IVCT) bands. To the best of our knowledge, this is the first reported example of a zwitterionic MV series in which the degree of positive charge delocalization can be varied by changing the bound anions, and serves to clarify the interplay between IVCT parameters. The key underlying factor is the variable zero-level energy difference in the MV states. This work provides new insight into imbuing MV molecules with external charge-responsiveness, a prerequisite of molecular QCA techniques.
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Affiliation(s)
- Keishiro Tahara
- Department of Material Science, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo, 678-1297, Japan
| | - Nazuna Terashita
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Ken Tokunaga
- Division of Liberal Arts, Centre for Promotion of Higher Education, Kogakuin University, 2665-1, Nakano, Hachioji, Tokyo, 192-0015, Japan
| | - Shiomi Yabumoto
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Jun-Ichi Kikuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Yoshiki Ozawa
- Department of Material Science, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo, 678-1297, Japan
| | - Masaaki Abe
- Department of Material Science, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo, 678-1297, Japan
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19
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Goswami A, Saha S, Biswas PK, Schmittel M. (Nano)mechanical Motion Triggered by Metal Coordination: from Functional Devices to Networked Multicomponent Catalytic Machinery. Chem Rev 2019; 120:125-199. [DOI: 10.1021/acs.chemrev.9b00159] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Abir Goswami
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Suchismita Saha
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Pronay Kumar Biswas
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
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20
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Lu Z, Lavendomme R, Burghaus O, Nitschke JR. A Zn
4
L
6
Capsule with Enhanced Catalytic C−C Bond Formation Activity upon C
60
Binding. Angew Chem Int Ed Engl 2019; 58:9073-9077. [DOI: 10.1002/anie.201903286] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/20/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Zhenpin Lu
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Roy Lavendomme
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Olaf Burghaus
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Str. 4 35032 Marburg Germany
| | - Jonathan R. Nitschke
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
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21
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Lu Z, Lavendomme R, Burghaus O, Nitschke JR. A Zn
4
L
6
Capsule with Enhanced Catalytic C−C Bond Formation Activity upon C
60
Binding. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903286] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Zhenpin Lu
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Roy Lavendomme
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Olaf Burghaus
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Str. 4 35032 Marburg Germany
| | - Jonathan R. Nitschke
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
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22
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Bai ST, Kluwer AM, Reek JNH. Effector enhanced enantioselective hydroformylation. Chem Commun (Camb) 2019; 55:14151-14154. [DOI: 10.1039/c9cc07327b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this communication, we report rhodium DIMPhos complexes with an integrated DIM-receptor that can bind carboxylate containing effectors and their application in the rhodium catalyzed hydroformylation reaction.
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Affiliation(s)
- Shao-Tao Bai
- Homogeneous, Supramolecular and Bio-inspired Catalysis
- Van't Hoff Institute for Molecular Sciences (HIMS)
- University of Amsterdam (UvA)
- 1098 XH Amsterdam
- The Netherlands
| | | | - Joost N. H. Reek
- Homogeneous, Supramolecular and Bio-inspired Catalysis
- Van't Hoff Institute for Molecular Sciences (HIMS)
- University of Amsterdam (UvA)
- 1098 XH Amsterdam
- The Netherlands
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23
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Sarmah K, Mukhopadhyay S, Maji TK, Pratihar S. Switchable Bifunctional Bistate Reusable ZnO–Cu for Selective Oxidation and Reduction Reaction. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03785] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kasturi Sarmah
- Department of Chemical Sciences, Tezpur University, Napaam, Assam−784028, India
| | | | - Tarun K. Maji
- Department of Chemical Sciences, Tezpur University, Napaam, Assam−784028, India
| | - Sanjay Pratihar
- Department of Chemical Sciences, Tezpur University, Napaam, Assam−784028, India
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24
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Cheng HF, d'Aquino AI, Barroso-Flores J, Mirkin CA. A Redox-Switchable, Allosteric Coordination Complex. J Am Chem Soc 2018; 140:14590-14594. [PMID: 30365302 DOI: 10.1021/jacs.8b09321] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A redox-regulated molecular tweezer complex was synthesized via the weak-link approach. The PtII complex features a redox-switchable hemilabile ligand (RHL) functionalized with a ferrocenyl moiety, whose oxidation state modulates the opening of a specific coordination site. Allosteric regulation by redox agents gives reversible access to two distinct structural states-a fully closed state and a semi-open state-whose interconversion was studied via multinuclear NMR spectroscopy, cyclic voltammetry, and UV-vis-NIR spectroscopy. Two structures in this four-state system were further characterized via SCXRD, while the others were modeled through DFT calculations. This fully reversible, RHL-based system defines an unusual level of electrochemical control over the occupancy of a specific coordination site, thereby providing access to four distinct coordination states within a single system, each defined and differentiated by structure and oxidation state.
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Affiliation(s)
- Ho Fung Cheng
- Department of Chemistry and International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , United States
| | - Andrea I d'Aquino
- Department of Chemistry and International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , United States
| | - Joaquín Barroso-Flores
- Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM , Carretera Toluca-Atlacomulco Km 14.5 , Personal de la UNAM, Unidad San Cayetano, Toluca , Estado de México C.P. 50200 , Mexico
| | - Chad A Mirkin
- Department of Chemistry and International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , United States
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25
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Liu Y, Zhou J, Wasielewski MR, Xing H, Mirkin CA. A four-state fluorescent molecular switch. Chem Commun (Camb) 2018; 54:12041-12044. [PMID: 30294737 PMCID: PMC6203447 DOI: 10.1039/c8cc05159c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four distinct fluorescent states are achieved in a single Weak-Link Approach (WLA) construct bearing pyrene and tetraphenylethene moieties. The fluorescence of the compound in both the solution and solid phases can be manipulated through reversible coordination chemistry at the PtII center.
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Affiliation(s)
- Yuan Liu
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA. ;
| | - Jiawang Zhou
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA. ;
- Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, USA
| | - Michael R. Wasielewski
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA. ;
- Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, USA
| | - Hang Xing
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA. ;
- Institute of Chemical Biology and Nanomedicine, Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Chad A. Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA. ;
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26
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Peng T, Miao J, Gao Z, Zhang L, Gao Y, Fan C, Li D. Reactivating Catalytic Surface: Insights into the Role of Hot Holes in Plasmonic Catalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703510. [PMID: 29457350 DOI: 10.1002/smll.201703510] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Indexed: 06/08/2023]
Abstract
Surface plasmon resonance of coinage metal nanoparticles is extensively exploited to promote catalytic reactions via harvesting solar energy. Previous efforts on elucidating the mechanisms of enhanced catalysis are devoted to hot electron-induced photothermal conversion and direct charge transfer to the adsorbed reactants. However, little attention is paid to roles of hot holes that are generated concomitantly with hot electrons. In this work, 13 nm spherical Au nanoparticles with small absorption cross-section are employed to catalyze a well-studied glucose oxidation reaction. Density functional theory calculation and X-ray absorption spectrum analysis reveal that hot holes energetically favor transferring catalytic intermediates to product molecules and then desorbing from the surface of plasmonic catalysts, resulting in the recovery of their catalytic activities. The studies shed new light on the use of the synergy of hot holes and hot electrons for plasmon-promoted catalysis.
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Affiliation(s)
- Tianhuan Peng
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Junjian Miao
- Division of Interfacial Water, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Zhaoshuai Gao
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Linjuan Zhang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Yi Gao
- Division of Interfacial Water, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Chunhai Fan
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Di Li
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
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27
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van Dijk L, Tilby MJ, Szpera R, Smith OA, Bunce HAP, Fletcher SP. Molecular machines for catalysis. Nat Rev Chem 2018. [DOI: 10.1038/s41570-018-0117] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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28
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d’Aquino AI, Cheng HF, Barroso-Flores J, Kean ZS, Mendez-Arroyo J, McGuirk CM, Mirkin CA. An Allosterically Regulated, Four-State Macrocycle. Inorg Chem 2018; 57:3568-3578. [DOI: 10.1021/acs.inorgchem.7b02745] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrea I. d’Aquino
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ho Fung Cheng
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Joaquín Barroso-Flores
- Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco Km 14.5, Personal de la UNAM, Unidad San Cayetano, Toluca, Estado de México C.P. 50200, México
| | - Zachary S. Kean
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jose Mendez-Arroyo
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - C. Michael McGuirk
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Chad A. Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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29
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Charge and spin coupling in copper compounds with hemilabile noninnocent ligands – Ambivalence in three dimensions. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.08.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Takano Y, Munechika R, Biju V, Harashima H, Imahori H, Yamada Y. Optical control of mitochondrial reductive reactions in living cells using an electron donor-acceptor linked molecule. NANOSCALE 2017; 9:18690-18698. [PMID: 29165486 DOI: 10.1039/c7nr06310e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
It has been known for decades that intracellular redox reactions control various vital functions in living systems, which include the synthesis of biomolecules, the modulation of protein functions, and cell signaling. Although there have been several reports on the control of such functions using DNA and RNA, the non-invasive optical control of biological functions is an important ongoing challenge. In this study, a hybrid of an electron donor-acceptor linked molecule based on a ferrocene(Fc)-porphyrin(ZnP)-fullerene(C60) analogue and an elaborately designed nano-carrier, referred to herein as a MITO-Porter, resulted in a successful photoinduced intermolecular electron transfer reaction via the long-lived intramolecular charge separation, leading to site-specific reductive reactions in the mitochondria of living HeLa cells. A Fc-ZnP-C60 linked molecule, 1-Oct, was designed and prepared for taking advantage of the unique photophysical properties with excellent efficiency (i.e. a long lifetime and a high quantum yield) for photoinduced charge separation. The targeted delivery of 1-Oct to mitochondria was accomplished by using a combination of the Fc-ZnP-C60 molecule and a drug delivery nano-carrier, MITO-Porter, that was recently established by our group for intracellular cargo delivery. The successful delivery of 1-Oct by the MITO-Porter permitted the optically-controlled generation of O2- in the mitochondria of HeLa cells and the following induction of apoptosis as a cell signalling response was observed in confocal laser microscopy experiments. The obtained results indicate the use of an electron donor-acceptor system such as this can be a promising tool for the non-invasive triggering of redox-coupled cellular activities in living systems.
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Affiliation(s)
- Yuta Takano
- Research Institute for Electronic Science, Hokkaido University, Kita-20 Nishi-10, Kita-ku, Sapporo 001-0020, Japan.
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31
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Wilders AM, Contrella ND, Sampson JR, Zheng M, Jordan RF. Allosteric Effects in Ethylene Polymerization Catalysis. Enhancement of Performance of Phosphine-Phosphinate and Phosphine-Phosphonate Palladium Alkyl Catalysts by Remote Binding of B(C6F5)3. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00815] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Alison M. Wilders
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Nathan D. Contrella
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Jessica R. Sampson
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Mingfang Zheng
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Richard F. Jordan
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
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32
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De Bo G, Leigh DA, McTernan CT, Wang S. A complementary pair of enantioselective switchable organocatalysts. Chem Sci 2017; 8:7077-7081. [PMID: 29147536 PMCID: PMC5637462 DOI: 10.1039/c7sc02462b] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 08/22/2017] [Indexed: 12/11/2022] Open
Abstract
A pair of enantioselective switchable bifunctional catalysts are shown to promote a range of conjugate addition reactions in up to 95 : 5 e.r. and 95% conversion. Each catalyst can be switched OFF using conditions that switch the other catalyst ON. Catalyst ON : OFF ratios of up to 98 : 2 and 1 : 99 were achieved, with a ratio of reaction rates of up to 16 : 1 between the ON and OFF states, maintained over complete ON-OFF-ON and OFF-ON-OFF cycles. However, simultaneous operation of the catalyst pair in the same reaction vessel, which in principle could allow product handedness to be switched by simple E-Z isomerisation of the catalyst pair, was unsuccessful. In this first generation complementary pair of enantioselective switchable organocatalysts, the OFF state of one catalyst inhibits the ON state of the other.
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Affiliation(s)
- Guillaume De Bo
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - David A Leigh
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Charlie T McTernan
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Shoufeng Wang
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
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33
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Kimura R, Suzuki S, Okada K, Kozaki M. Trimeric Assembly of Dendritic Light-Harvesting Antenna with Two Kinds of Porphyrin Cores. J Org Chem 2017; 82:8917-8926. [PMID: 28782361 DOI: 10.1021/acs.joc.7b01275] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A trimeric assembly of light-harvesting antennas was prepared using a copper-catalyzed Hüisgen 1,3-dipolar cycloaddition reaction between a dendrimer having a zinc diethynyldiphenylporphyrin core (ZnDEDPP) with two azide terminals and two equivalents of dendrimers having a zinc tetraphenylporphyrin core (ZnTPP) with one ethynyl terminal. The absorptions of the trimer appear in a longer-wavelength region compared to monomeric references in toluene; however, there is almost no shift in wavelength in 1,1,2,2-tetrachloroethane (TCE). Fluorescence spectra of the trimer show that the singlet energy transfer from ZnTPP to ZnDEDPP takes place more effectively in toluene than in TCE. These absorption and fluorescence studies are compatible with solvent-dependent conformation; the extended forms of the trimers are favored by solvation in polar TCE, and the folded conformation is stabilized by the attractive van der Waals and dipole-dipole interactions between the dendritic chains in nonpolar toluene.
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Affiliation(s)
- Ryo Kimura
- Graduate School of Science, Osaka City University , 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Shuichi Suzuki
- Graduate School of Science, Osaka City University , 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Keiji Okada
- Graduate School of Science, Osaka City University , 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Masatoshi Kozaki
- Graduate School of Science, Osaka City University , 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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34
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Doistau B, Benda L, Cantin JL, Chamoreau LM, Ruiz E, Marvaud V, Hasenknopf B, Vives G. Six States Switching of Redox-Active Molecular Tweezers by Three Orthogonal Stimuli. J Am Chem Soc 2017; 139:9213-9220. [PMID: 28605200 DOI: 10.1021/jacs.7b02945] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A six level molecular switch based on terpyridine(Ni-salphen)2 tweezers and addressable by three orthogonal stimuli (metal coordination, redox reaction, and guest binding) is reported. By a metal coordination stimulus, the tweezers can be mechanically switched from an open "W"-shaped conformation to a closed "U"-shaped form. Theses two states can each be reversibly oxidized by the redox stimulus and bind to a pyrazine guest resulting in four additional states. All six states are stable and accessible by the right combination of stimuli and were studied by NMR, XRD, EPR spectroscopy, and DFT calculations. The combination of the supramolecular concepts of mechanical motion and guest binding with the redox noninnocent and valence tautomerism properties of Ni-salphen complexes added two new dimensions to a mechanical switch.
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Affiliation(s)
- Benjamin Doistau
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Lorien Benda
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Jean-Louis Cantin
- Sorbonne Universités, UPMC Univ Paris 06, INSP , 4 place Jussieu, 75005 Paris, France
| | - Lise-Marie Chamoreau
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Eliseo Ruiz
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona , Diagonal 645, E-08028 Barcelona, Spain
| | - Valérie Marvaud
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Bernold Hasenknopf
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Guillaume Vives
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
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35
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Liu Y, Kean ZS, d’Aquino AI, Manraj YD, Mendez-Arroyo J, Mirkin CA. Palladium(II) Weak-Link Approach Complexes Bearing Hemilabile N-Heterocyclic Carbene–Thioether Ligands. Inorg Chem 2017; 56:5902-5910. [PMID: 28471640 DOI: 10.1021/acs.inorgchem.7b00543] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yuan Liu
- Department of Chemistry and International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Zachary S. Kean
- Department of Chemistry and International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Andrea I. d’Aquino
- Department of Chemistry and International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Yashin D. Manraj
- Department of Chemistry and International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jose Mendez-Arroyo
- Department of Chemistry and International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Chad. A. Mirkin
- Department of Chemistry and International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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36
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Semwal S, Choudhury J. Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702142] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shrivats Semwal
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
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37
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Semwal S, Choudhury J. Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions. Angew Chem Int Ed Engl 2017; 56:5556-5560. [DOI: 10.1002/anie.201702142] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/22/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Shrivats Semwal
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
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38
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Ermilov EA, Liu JY, Menting R, Huang YS, Röder B, Ng DKP. An artificial photosynthetic model based on a molecular triad of boron dipyrromethene and phthalocyanine. Phys Chem Chem Phys 2017; 18:10964-75. [PMID: 27043894 DOI: 10.1039/c6cp00920d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A boron dipyrromethene (BDP) unit and its monostyryl derivative (MSBDP) were introduced at the axial positions of a silicon(iv) phthalocyanine (SiPc) core. The absorption spectrum of this compound virtually covered the entire visible region (300-700 nm) and could be interpreted as a superposition of the spectra of individual components. The intramolecular photoinduced energy and charge transfer processes of this triad were studied using steady-state and time-resolved spectroscopic methods in polar and nonpolar solvents. Upon BDP-part excitation, a fast and highly efficient excitation energy transfer (EET) occurred resulting in strong quenching of its fluorescence and the formation of the first excited singlet state of SiPc or MSBDP. It was found that both EET and charge transfer (CT) processes competed with each other in the depopulation of the first excited singlet state of the MSBDP moiety. The former strongly superseded CT in nonpolar toluene, whereas the latter was dominant in a polar environment. Direct or indirect (via EET) excitation of the SiPc-part of the triad was followed by CT yielding the charge-separated (CS) species BDP-SiPc(˙-)-MSBDP(˙+). The energy gap between the CS state and the S1-state of the SiPc moiety was found to be only 0.06 eV in toluene, which facilitated the back CT process and resulted in the appearance of thermally activated delayed fluorescence. With increasing solvent polarity, the energy of the CS state reduced resulting in the disappearance of the delayed fluorescence in CHCl3, tetrahydrofuran or N,N-dimethylformamide. The charge recombination rate, k(CR), was very fast in polar DMF (3.3 × 10(10) s(-1)), whereas this process was two-orders of magnitude slower in nonpolar toluene (k(CR) = 4.0 × 10(8) s(-1)).
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Affiliation(s)
- Eugeny A Ermilov
- Institut für Physik, Photobiophysik, Humboldt-Universität zu Berlin, Newtonstr. 15, D-12489 Berlin, Germany. and Bundesanstalt für Materialforschung und - prüfung (BAM), Biophotonik, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany
| | - Jian-Yong Liu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
| | - Roel Menting
- Institut für Physik, Photobiophysik, Humboldt-Universität zu Berlin, Newtonstr. 15, D-12489 Berlin, Germany.
| | - Ying-Si Huang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
| | - Beate Röder
- Institut für Physik, Photobiophysik, Humboldt-Universität zu Berlin, Newtonstr. 15, D-12489 Berlin, Germany.
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
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39
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Gao R, Yan D. Layered host-guest long-afterglow ultrathin nanosheets: high-efficiency phosphorescence energy transfer at 2D confined interface. Chem Sci 2017; 8:590-599. [PMID: 28451206 PMCID: PMC5358535 DOI: 10.1039/c6sc03515a] [Citation(s) in RCA: 159] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 09/02/2016] [Indexed: 12/20/2022] Open
Abstract
Tuning and optimizing the efficiency of light energy transfer play an important role in meeting modern challenges of minimizing energy loss and developing high-performance optoelectronic materials. However, attempts to fabricate systems giving highly efficient energy transfer between luminescent donor and acceptor have achieved limited success to date. Herein, we present a strategy towards phosphorescence energy transfer at a 2D orderly crystalline interface. We first show that new ultrathin nanosheet materials giving long-afterglow luminescence can be obtained by assembling aromatic guests into a layered double hydroxide host. Furthermore, we demonstrate that co-assembly of these long-lived energy donors with an energy acceptor in the same host generates an ordered arrangement of phosphorescent donor-acceptor pairs spatially confined within the 2D nanogallery, which affords energy transfer efficiency as high as 99.7%. Therefore, this work offers an alternative route to develop new types of long-afterglow nanohybrids and efficient light transfer systems with potential energy, illumination and sensor applications.
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Affiliation(s)
- Rui Gao
- State Key Laboratory of Chemical Resource Engineering , Beijing University of Chemical Technology , Beijing 100029 , P. R. China .
| | - Dongpeng Yan
- State Key Laboratory of Chemical Resource Engineering , Beijing University of Chemical Technology , Beijing 100029 , P. R. China .
- Beijing Key Laboratory of Energy Conversion and Storage Materials , College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China .
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40
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McGuirk CM, Mendez-Arroyo J, d'Aquino AI, Stern CL, Liu Y, Mirkin CA. A concerted two-prong approach to the in situ allosteric regulation of bifunctional catalysis. Chem Sci 2016; 7:6674-6683. [PMID: 28451109 PMCID: PMC5355828 DOI: 10.1039/c6sc01454b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 07/08/2016] [Indexed: 11/25/2022] Open
Abstract
Herein, we report the reversible in situ "on-off" allosteric regulation of hydrogen-bond-donating (HBD)-Lewis base co-catalytic activity via a concerted two-prong methodology entailing cooperative acid-base chemistry and a structurally addressable coordination complex. Specifically, a heteroligated Pt(ii) weak-link approach (WLA) tweezer complex containing both a hemilabile squaramide-piperidine-based catalytic ligand and a sodium sulfonate hydrogen-bond-accepting (HBA) ligand was synthesized. Due to the hemilabile nature of the catalyst-containing ligand, the heteroligated complex can be reversibly toggled in situ between a flexible, semi-open state and a rigid, fully closed state upon the addition of elemental ion cues. 1H NMR spectroscopy titration studies show that in the semi-open state interligand hydrogen-bonding prevents substrate recognition by the squaramide unit, while in the fully closed state ligand-ligand interactions are prevented. This results in a catalytically active closed state, whereas in the semi-open state, when the piperidine tertiary amine is deliberately protonated, no catalytic activity is observed. Reversible interconversion between the active fully closed state and the dormant protonated semi-open state is achieved in the presence of substrate upon the concerted addition and abstraction of both a proton and a coordinating elemental anion. In this work, allosteric regulation of catalytic activity is demonstrated for both the Michael addition of nitroethane to β-nitrostyrene and the ring-opening of l-(-)-lactide. Taken together, this work details a potentially generalizable platform for the "on-off" allosteric regulation of a family of HBD-Lewis base co-catalysts capable of catalyzing a broad scope of reactions, including the living ring-opening polymerization of cyclic esters.
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Affiliation(s)
- C Michael McGuirk
- Department of Chemistry , International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , USA .
| | - Jose Mendez-Arroyo
- Department of Chemistry , International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , USA .
| | - Andrea I d'Aquino
- Department of Chemistry , International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , USA .
| | - Charlotte L Stern
- Department of Chemistry , International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , USA .
| | - Yuan Liu
- Department of Chemistry , International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , USA .
| | - Chad A Mirkin
- Department of Chemistry , International Institute for Nanotechnology , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208-3113 , USA .
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41
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Briš A, Trošelj P, Margetić D, Flamigni L, Ventura B. Photoinduced Processes in Self-Assemblies of Bis-Porphyrinic Tweezers with an Axially Coordinated Bispyridinofullerene. Chempluschem 2016; 81:985-994. [DOI: 10.1002/cplu.201600231] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/03/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Anamarija Briš
- Ruđer Bošković Institute; Bijenička c. 54 10000 Zagreb Croatia
| | - Pavle Trošelj
- Ruđer Bošković Institute; Bijenička c. 54 10000 Zagreb Croatia
| | - Davor Margetić
- Ruđer Bošković Institute; Bijenička c. 54 10000 Zagreb Croatia
| | - Lucia Flamigni
- Istituto ISOF-CNR; Via P. Gobetti 101 40129 Bologna Italy
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42
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Lifschitz AM, Young RM, Mendez-Arroyo J, McGuirk CM, Wasielewski MR, Mirkin CA. Cooperative Electronic and Structural Regulation in a Bioinspired Allosteric Photoredox Catalyst. Inorg Chem 2016; 55:8301-8. [DOI: 10.1021/acs.inorgchem.6b00095] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alejo M. Lifschitz
- Department
of Chemistry and International Institute for Nanotechnology and ‡Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208, United States
| | - Ryan M. Young
- Department
of Chemistry and International Institute for Nanotechnology and ‡Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208, United States
| | - Jose Mendez-Arroyo
- Department
of Chemistry and International Institute for Nanotechnology and ‡Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208, United States
| | - C. Michael McGuirk
- Department
of Chemistry and International Institute for Nanotechnology and ‡Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208, United States
| | - Michael R. Wasielewski
- Department
of Chemistry and International Institute for Nanotechnology and ‡Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208, United States
| | - Chad A. Mirkin
- Department
of Chemistry and International Institute for Nanotechnology and ‡Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208, United States
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43
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Semwal S, Choudhury J. Molecular Coordination-Switch in a New Role: Controlling Highly Selective Catalytic Hydrogenation with Switchability Function. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00150] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shrivats Semwal
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
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44
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Dau TM, Asamoah BD, Belyaev A, Chakkaradhari G, Hirva P, Jänis J, Grachova EV, Tunik SP, Koshevoy IO. Adjustable coordination of a hybrid phosphine–phosphine oxide ligand in luminescent Cu, Ag and Au complexes. Dalton Trans 2016; 45:14160-73. [DOI: 10.1039/c6dt02435a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mixed-donor ligand shows variable binding ability with respect to d10 metal ions to afford a series of mono- and dinuclear complexes with tunable photophysical characteristics.
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Affiliation(s)
- Thuy Minh Dau
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | | | - Andrey Belyaev
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | | | - Pipsa Hirva
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | - Janne Jänis
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | | | | | - Igor O. Koshevoy
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
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45
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Chen M, Yang B, Chen C. Redox‐Controlled Olefin (Co)Polymerization Catalyzed by Ferrocene‐Bridged Phosphine‐Sulfonate Palladium Complexes. Angew Chem Int Ed Engl 2015; 54:15520-4. [DOI: 10.1002/anie.201507274] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/08/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Min Chen
- Key Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026 (China) http://staff.ustc.edu.cn/∼changle
| | - Bangpei Yang
- Key Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026 (China) http://staff.ustc.edu.cn/∼changle
| | - Changle Chen
- Key Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026 (China) http://staff.ustc.edu.cn/∼changle
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46
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Chen M, Yang B, Chen C. Redox-Controlled Olefin (Co)Polymerization Catalyzed by Ferrocene-Bridged Phosphine-Sulfonate Palladium Complexes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507274] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Henkelis JJ, Blackburn AK, Dale EJ, Vermeulen NA, Nassar MS, Stoddart JF. Allosteric Modulation of Substrate Binding within a Tetracationic Molecular Receptor. J Am Chem Soc 2015; 137:13252-5. [DOI: 10.1021/jacs.5b08656] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- James J. Henkelis
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Anthea K. Blackburn
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Edward J. Dale
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Nicolaas A. Vermeulen
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Majed S. Nassar
- Joint
Centre of Excellence in Integrated Nano-Systems, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - J. Fraser Stoddart
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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48
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Kopilevich S, Müller A, Weinstock IA. Amplified Rate Acceleration by Simultaneous Up-Regulation of Multiple Active Sites in an Endo-Functionalized Porous Capsule. J Am Chem Soc 2015; 137:12740-3. [DOI: 10.1021/jacs.5b06211] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sivil Kopilevich
- Department
of Chemistry, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Achim Müller
- Faculty
of Chemistry, University of Bielefeld, Bielefeld D-33501, Germany
| | - Ira A. Weinstock
- Department
of Chemistry, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
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49
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Affiliation(s)
- Sundus Erbas-Cakmak
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - David A. Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Charlie T. McTernan
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Alina
L. Nussbaumer
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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50
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Lifschitz AM, Rosen MS, McGuirk CM, Mirkin CA. Allosteric Supramolecular Coordination Constructs. J Am Chem Soc 2015; 137:7252-61. [DOI: 10.1021/jacs.5b01054] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Alejo M. Lifschitz
- Department
of Chemistry and
The International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Mari S. Rosen
- Department
of Chemistry and
The International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - C. Michael McGuirk
- Department
of Chemistry and
The International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Chad A. Mirkin
- Department
of Chemistry and
The International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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