1
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Shao B, Fu H, Aprahamian I. A molecular anion pump. Science 2024; 385:544-549. [PMID: 39088617 DOI: 10.1126/science.adp3506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 07/02/2024] [Indexed: 08/03/2024]
Abstract
Pumping ions against a concentration gradient through protein-based transporters is a cornerstone of numerous biological processes. Mimicking this function by using artificial receptors remains a daunting challenge, mainly because of the difficulties in balancing between the requirement for high binding affinities and precise and on-demand ion capture and release properties. We report a trimeric hydrazone photoswitch-based receptor that converts light energy into work by actively transporting chloride anion against a gradient through a dichloromethane liquid membrane, functioning as a molecular pump. The system manifests ease of synthesis, bistability, excellent photoswitching properties, and superb ON-OFF binding properties (difference of up to six orders of magnitude).
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Affiliation(s)
- Baihao Shao
- Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA
| | - Heyifei Fu
- Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA
| | - Ivan Aprahamian
- Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA
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2
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López-Corbalán V, Fuertes A, Llamas-Saiz AL, Amorín M, Granja JR. Recognition of anion-water clusters by peptide-based supramolecular capsules. Nat Commun 2024; 15:6055. [PMID: 39025854 PMCID: PMC11258365 DOI: 10.1038/s41467-024-50193-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 06/26/2024] [Indexed: 07/20/2024] Open
Abstract
The biological and technological importance of anion-mediated processes has made the development of improved methods for the selective recognition of anions one of the most relevant research topics today. The hydration sphere of anions plays an important role in the functions performed by anions by forming a variety of cluster complexes. Here we describe a supramolecular capsule that recognizes hydrated anion clusters. These clusters are most likely composed of three ions that form hydrated C3 symmetry complexes that are entrapped within the supramolecular capsule of the same symmetry. The capsule is made of self-assembled α,γ-cyclic peptide containing amino acid with by five-membered rings and equipped with a tris(triazolylethyl)amine cap. To recognise the hydrated anion clusters, the hexapeptide capsule must disassemble to entrap them between its two subunits.
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Affiliation(s)
- Victoria López-Corbalán
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Organic Chemistry Department, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Alberto Fuertes
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Organic Chemistry Department, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Antonio L Llamas-Saiz
- Unidad de Rayos X; Área de infraestructuras de Investigación, RIAIDT Edificio CACTUS, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Manuel Amorín
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Organic Chemistry Department, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Juan R Granja
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Organic Chemistry Department, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
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3
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Lee S, Song G, Jeong KS. Stimuli-Responsive Molecular Duplexes Displaying Duplex-to-Duplex Switching. Angew Chem Int Ed Engl 2024:e202410884. [PMID: 38937392 DOI: 10.1002/anie.202410884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 06/27/2024] [Accepted: 06/27/2024] [Indexed: 06/29/2024]
Abstract
Synthetic duplexes with high stabilities have promising potential for mimicking biomolecular functions and developing supramolecular smart materials. Herein, we describe the synthesis and stimuli-responsive properties of molecular duplexes derived from indolocarbazole-pyridine (I-P) oligomers. These duplexes adopt nonclassical helical structures, stabilized by I-P hydrogen-bonding pairs in anhydrous chlorinated solvents. Notably, the longest duplex 62 (11-mer)2 displays remarkable stability, forming twenty hydrogen bonds; its exchange energy barrier was determined to be ΔG≠=22.0 kcal ⋅ mol-1 at 75 °C in anhydrous (CDCl2)2. Upon the addition of water, a hydrated duplex 62 (11-mer)2⊃10H2O was formed, with one water molecule inserted between each I-P hydrogen-bonding pair. The Hill coefficient (n) for this process is 6.1, demonstrating extremely positive cooperativity. Conversely, the hydrated duplex 62 (11-mer)2⊃10H2O was completely converted into the original anhydrous duplex 62 (11-mer)2 when the temperature was increased. Interconversion between these two distinct duplexes can be repeatedly carried out by varying the temperature. Furthermore, reversible switching between hetero-duplexes and homo-duplexes was also demonstrated by controlling the temperature, with concomitant changes in the characteristic emission signals.
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Affiliation(s)
- Seungwon Lee
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Geunmoo Song
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Kyu-Sung Jeong
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
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4
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John EA, Riel AMS, Wieske LHE, Ray D, Decato DA, Boller M, Takacs Z, Erdélyi M, Bryantsev VS, Berryman OB. Taming Molecular Folding: Anion-Templated Foldamers with Tunable Quaternary Structures. J Am Chem Soc 2024. [PMID: 38842125 DOI: 10.1021/jacs.3c14820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Higher-order foldamers represent a unique class of supramolecules at the forefront of molecular design. Herein we control quaternary folding using a novel approach that combines halogen bonding (XBing) and hydrogen bonding (HBing). We present the first anion-templated double helices induced by halogen bonds (XBs) and stabilized by "hydrogen bond enhanced halogen bonds" (HBeXBs). Our findings demonstrate that the number and orientation of hydrogen bond (HB) and XB donors significantly affect the quaternary structure and guest selectivity of two similar oligomers. This research offers new design elements to engineer foldamers and tailor their quaternary structure for specific guest binding.
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Affiliation(s)
- Eric A John
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Asia Marie S Riel
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Lianne H E Wieske
- Department of Chemistry─BMC, Organic Chemistry, Uppsala University, Husargatan 3, 752 37 Uppsala, Sweden
| | - Debmalya Ray
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Daniel A Decato
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Madeleine Boller
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
| | - Zoltan Takacs
- Swedish NMR Center, University of Gothenburg, Gothenburg SE-405 30, Sweden
| | - Máté Erdélyi
- Department of Chemistry─BMC, Organic Chemistry, Uppsala University, Husargatan 3, 752 37 Uppsala, Sweden
| | - Vyacheslav S Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Orion B Berryman
- Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
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5
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Hilton EM, Jinks MA, Burnett AD, Warren NJ, Wilson AJ. Visible-Light Driven Control Over Triply and Quadruply Hydrogen-Bonded Supramolecular Assemblies. Chemistry 2024; 30:e202304033. [PMID: 38190370 DOI: 10.1002/chem.202304033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/10/2024]
Abstract
Supramolecular polymers offer tremendous potential to produce new "smart" materials, however, there remains a need to develop systems that are responsive to external stimuli. In this work, visible-light responsive hydrogen-bonded supramolecular polymers comprising photoresponsive supramolecular synthons (I-III) consisting of two hydrogen bonding motifs (HBMs) connected by a central ortho-tetrafluorinated azobenzene have been characterized by DOSY NMR and viscometry. Comparison of different hydrogen-bonding motifs reveals that assembly in the low and high concentration regimes is strongly influenced by the strength of association between the HBMs. I, Incorporating a triply hydrogen-bonded heterodimer, was found to exhibit concentration dependent switching between a monomeric pseudo-cycle and supramolecular oligomer through intermolecular hydrogen bonding interactions between the HBMs. II, Based on the same photoresponsive scaffold, and incorporating a quadruply hydrogen-bonded homodimer was found to form a supramolecular polymer which was dependent upon the ring-chain equilibrium and thus dependent upon both concentration and photochemical stimulus. Finally, III, incorporating a quadruply hydrogen-bonded heterodimer represents the first photoswitchable AB type hydrogen-bonded supramolecular polymer. Depending on the concentration and photostationary state, four different assemblies dominate for both monomers II and III, demonstrating the ability to control supramolecular assembly and physical properties triggered by light.
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Affiliation(s)
- Eleanor M Hilton
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
- School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Michael A Jinks
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Andrew D Burnett
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Nicholas J Warren
- School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Andrew J Wilson
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
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6
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Patrick SC, Beer PD, Davis JJ. Solvent effects in anion recognition. Nat Rev Chem 2024; 8:256-276. [PMID: 38448686 DOI: 10.1038/s41570-024-00584-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2024] [Indexed: 03/08/2024]
Abstract
Anion recognition is pertinent to a range of environmental, medicinal and industrial applications. Recent progress in the field has relied on advances in synthetic host design to afford a broad range of potent recognition motifs and novel supramolecular structures capable of effective binding both in solution and at derived molecular films. However, performance in aqueous media remains a critical challenge. Understanding the effects of bulk and local solvent on anion recognition by host scaffolds is imperative if effective and selective detection in real-world media is to be viable. This Review seeks to provide a framework within which these effects can be considered both experimentally and theoretically. We highlight proposed models for solvation effects on anion binding and discuss approaches to retain strong anion binding in highly competitive (polar) solvents. The synthetic design principles for exploiting the aforementioned solvent effects are explored.
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Affiliation(s)
| | - Paul D Beer
- Department of Chemistry, University of Oxford, Oxford, UK
| | - Jason J Davis
- Department of Chemistry, University of Oxford, Oxford, UK.
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7
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Debnath S, Flood AH, Raghavachari K. Solvent-Dependent Folding Behavior of a Helix-Forming Aryl-Triazole Foldamer. J Phys Chem B 2024; 128:1586-1594. [PMID: 38324342 DOI: 10.1021/acs.jpcb.3c04907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Aromatic foldamers make up a novel class of bioinspired molecules that display helical conformations and have functions that rely on control over their coil-helix folding preferences. While the folding has been extensively examined by experiment, it has rarely been paired with the types of atomic level insights offered by theory. We present the results of all-atom molecular dynamics (MD) simulations to examine the role of solvent polarity on driving the helical folding behavior of the aryl-triazole foldamer. The temperature-dependent enhanced sampling technique, replica-exchange MD simulations, was employed to understand the folding phenomena. The simulation results show that in a low polarity solvent (dichloromethane), the foldamer prefers to stay in the unfolded state. The unfolded state has four dipolar triazoles (5 D) in their favored all-anti geometries and favoring anti-parallel geometries. However, an increase in solvent polarity using acetonitrile resulted in solvophobic collapse, yielding the helically folded form as the predominant state. The folded helix has an all-syn geometry, with triazoles in parallel arrangements. Intermediate conformations with a mixture of syn and anti arrangements of the triazoles are of lower abundance in both the DCM and MeCN solvents. The chiral handedness of the helix observed experimentally is assigned as left-handed by correlation with computed electronic circular dichroism spectra using time-dependent density functional theory.
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Affiliation(s)
- Sibali Debnath
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Amar H Flood
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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8
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Lago-Silva M, Fernández-Míguez M, Rodríguez R, Quiñoá E, Freire F. Stimuli-responsive synthetic helical polymers. Chem Soc Rev 2024; 53:793-852. [PMID: 38105704 DOI: 10.1039/d3cs00952a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Synthetic dynamic helical polymers (supramolecular and covalent) and foldamers share the helix as a structural motif. Although the materials are different, these systems also share many structural properties, such as helix induction or conformational communication mechanisms. The introduction of stimuli responsive building blocks or monomer repeating units in these materials triggers conformational or structural changes, due to the presence/absence of the external stimulus, which are transmitted to the helix resulting in different effects, such as assymetry amplification, helix inversion or even changes in the helical scaffold (elongation, J/H helical aggregates). In this review, we show through selected examples how different stimuli (e.g., temperature, solvents, cations, anions, redox, chiral additives, pH or light) can alter the helical structures of dynamic helical polymers (covalent and supramolecular) and foldamers acting on the conformational composition or molecular structure of their components, which is also transmitted to the macromolecular helical structure.
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Affiliation(s)
- María Lago-Silva
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Manuel Fernández-Míguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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9
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Henriksen HC, Sowers AJ, Travis CR, Vulpis TD, Cope TA, Ouslander SK, Russell AF, Gagné MR, Pophristic V, Liu Z, Waters ML. Stimulus-Induced Relief of Intentionally Incorporated Frustration Drives Refolding of a Water-Soluble Biomimetic Foldamer. J Am Chem Soc 2023; 145:27672-27679. [PMID: 38054648 DOI: 10.1021/jacs.3c09883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Frustrated, or nonoptimal, interactions have been proposed to be essential to a protein's ability to display responsive behavior such as allostery, conformational signaling, and signal transduction. However, the intentional incorporation of frustrated noncovalent interactions has not been explored as a design element in the field of dynamic foldamers. Here, we report the design, synthesis, characterization, and molecular dynamics simulations of the first dynamic water-soluble foldamer that, in response to a stimulus, exploits relief of frustration in its noncovalent network to structurally rearrange from a pleated to an intercalated columnar structure. Thus, relief of frustration provides the energetic driving force for structural rearrangement. This work represents a previously unexplored design element for the development of stimulus-responsive systems that has potential application to materials chemistry, synthetic biology, and molecular machines.
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Affiliation(s)
- Hanne C Henriksen
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Adam J Sowers
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Christopher R Travis
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Troy D Vulpis
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Thomas A Cope
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Sarah K Ouslander
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Alexander F Russell
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Michel R Gagné
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Vojislava Pophristic
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, New Jersey 08028-1701 , United States
| | - Zhiwei Liu
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, New Jersey 08028-1701 , United States
| | - Marcey L Waters
- Department of Chemistry, CB 3290, UNC Chapel Hill, Chapel Hill, North Carolina 27599, United States
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10
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Koehler V, Bruschera G, Merlet E, Mandal PK, Morvan E, Rosu F, Douat C, Fischer L, Huc I, Ferrand Y. High-Affinity Hybridization of Complementary Aromatic Oligoamide Strands in Water. Angew Chem Int Ed Engl 2023; 62:e202311639. [PMID: 37804233 DOI: 10.1002/anie.202311639] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/02/2023] [Accepted: 10/02/2023] [Indexed: 10/09/2023]
Abstract
We prepared a series of water-soluble aromatic oligoamide sequences all composed of a segment prone to form a single helix and a segment prone to dimerize into a double helix. These sequences exclusively assemble as antiparallel duplexes. The modification of the duplex inner rim by varying the nature of the substituents borne by the aromatic monomers allowed us to identify sequences that can hybridize by combining two chemically different strands, with high affinity and complete selectivity in water. X-ray crystallography confirmed the expected antiparallel configuration of the duplexes whereas NMR spectroscopy and mass spectrometry allowed us to assess precisely the extent of the hybridization. The hybridization kinetics of the aromatic strands was shown to depend on both the nature of the substituents responsible for strand complementarity and the length of the aromatic strand. These results highlight the great potential of aromatic hetero-duplex as a tool to construct non-symmetrical dynamic supramolecular assemblies.
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Affiliation(s)
- Victor Koehler
- CBMN (UMR 5248) Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, 2 rue Escarpit, 33600, Pessac, France
| | - Gabrielle Bruschera
- CBMN (UMR 5248) Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, 2 rue Escarpit, 33600, Pessac, France
| | - Eric Merlet
- CBMN (UMR 5248) Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, 2 rue Escarpit, 33600, Pessac, France
| | - Pradeep K Mandal
- Department Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Estelle Morvan
- IECB, UAR3033 Univ. ćBordeaux, CNRS, INSERM, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Frédéric Rosu
- IECB, UAR3033 Univ. ćBordeaux, CNRS, INSERM, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Céline Douat
- Department Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Lucile Fischer
- CBMN (UMR 5248) Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, 2 rue Escarpit, 33600, Pessac, France
| | - Ivan Huc
- Department Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Yann Ferrand
- CBMN (UMR 5248) Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, 2 rue Escarpit, 33600, Pessac, France
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11
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Do CD, Pál D, Belyaev A, Pupier M, Kiesilä A, Kalenius E, Galmés B, Frontera A, Poblador-Bahamonde A, Cougnon FBL. Sulfate-induced large amplitude conformational change in a Solomon link. Chem Commun (Camb) 2023; 59:13010-13013. [PMID: 37830390 DOI: 10.1039/d3cc04555b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
A doubly-interlocked [2]catenane - or Solomon link - undergoes a complex conformational change upon addition of sulfate in methanol. This transformation generates a single pocket where two SO42- anions bind through multiple hydrogen bonds and electrostatic interactions. Despite the close proximity of the two anions, binding is highly cooperative.
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Affiliation(s)
- Cuong Dat Do
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | - Dávid Pál
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | - Andrey Belyaev
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 JYU, Finland.
| | - Marion Pupier
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | - Anniina Kiesilä
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 JYU, Finland.
| | - Elina Kalenius
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 JYU, Finland.
| | - Bartomeu Galmés
- Department de Química, Universitat de les Illes Balears, Carretera de Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain
| | - Antonio Frontera
- Department de Química, Universitat de les Illes Balears, Carretera de Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain
| | - Amalia Poblador-Bahamonde
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | - Fabien B L Cougnon
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 JYU, Finland.
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12
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Teng B, Mandal PK, Allmendinger L, Douat C, Ferrand Y, Huc I. Controlling aromatic helix dimerization in water by tuning charge repulsions. Chem Sci 2023; 14:11251-11260. [PMID: 37860656 PMCID: PMC10583700 DOI: 10.1039/d3sc02020g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 09/14/2023] [Indexed: 10/21/2023] Open
Abstract
Several helically folded aromatic oligoamides were designed and synthesized. The sequences were all water-soluble thanks to the charged side chains borne by the monomers. Replacing a few, sometimes only two, charged side chains by neutral methoxy groups was shown to trigger the formation of various aggregates which could be tentatively assigned to head-to-head stacked dimers of single helices, double helical duplexes and a quadruplex, none of which would form in organic solvent with organic-soluble analogues. The nature of the aggregates was supported by concentration and solvent dependent NMR studies, 1H DOSY experiments, mass spectrometry, and X-ray crystallography or energy-minimized models, as well as analogies with earlier studies. The hydrophobic effect appears to be the main driving force for aggregation but it can be finely modulated by the presence or absence of a small number of charges to an extent that had no precedent in aromatic foldamer architectures. These results will serve as a benchmark for future foldamer design in water.
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Affiliation(s)
- Binhao Teng
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Pradeep K Mandal
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Lars Allmendinger
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Céline Douat
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Yann Ferrand
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique CBMN UMR 5248, 2 rue Escarpit 33600 Pessac France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
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13
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Maeda A, Tokumoto JY, Kojima S, Fujimori K, Moriuchi-Kawakami T, Hirahara M. Binding of Stimuli-Responsive Ruthenium Aqua Complexes with 9-Ethylguanine. ACS OMEGA 2023; 8:37391-37401. [PMID: 37841177 PMCID: PMC10569010 DOI: 10.1021/acsomega.3c05343] [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: 07/24/2023] [Accepted: 09/14/2023] [Indexed: 10/17/2023]
Abstract
Stimuli-responsive ruthenium complexes proximal- and distal-[Ru(C10tpy)(C10pyqu) OH2]2+ (proximal-1 and distal-1; C10tpy = 4'-decyloxy-2,2':6',2″-terpyridine and C10pyqu = 2-[2'-(6'-decyloxy)-pyridyl]quinoline) were experimentally studied for adduct formation with a model DNA base. At 303 K, proximal-1 exhibited 1:1 adduct formation with 9-ethylguanine (9-EtG) to yield proximal-[Ru(C10tpy)(C10pyqu)(9-EtG)]2+ (proximal-RuEtG). Rotation of the guanine ligand on the ruthenium center was sterically hindered by the presence of an adjacent quinoline moiety at 303 K. Results from 1H NMR measurements indicated that photoirradiation of a proximal-RuEtG solution caused photoisomerization to distal-RuEtG, whereas heating of proximal-RuEtG caused ligand substitution to proximal-1. The distal isomer of the aqua complex, distal-1, was observed to slowly revert to proximal-1 at 303 K. In the presence of 9-EtG, distal-1 underwent thermal back-isomerization to proximal-1 and adduct formation to distal-RuEtG. Kinetic analysis of 1H NMR measurements showed that adduct formation between proximal-1 and 9-EtG was 8-fold faster than that between distal-1 and 9-EtG. This difference may be attributed to intramolecular hydrogen bonding and steric repulsion between the aqua ligand and the pendant moiety of the bidentate ligand..
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Affiliation(s)
- Atsuki Maeda
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Jun-ya Tokumoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Soichiro Kojima
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Keiichi Fujimori
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Takayo Moriuchi-Kawakami
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
| | - Masanari Hirahara
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi Ward, Osaka 535-8585, Japan
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14
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Montgomery CA, Murphy GK. Exploring the role of halogen bonding in iodonium ylides: insights into unexpected reactivity and reaction control. Beilstein J Org Chem 2023; 19:1171-1190. [PMID: 37592937 PMCID: PMC10428621 DOI: 10.3762/bjoc.19.86] [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: 05/30/2023] [Accepted: 07/18/2023] [Indexed: 08/19/2023] Open
Abstract
Halogen bonding is commonly found with iodine-containing molecules, and it arises when Lewis bases interact with iodine's σ-holes. Halogen bonding and σ-holes have been encountered in numerous monovalent and hypervalent iodine-containing compounds, and in 2022 σ-holes were computationally confirmed and quantified in the iodonium ylide subset of hypervalent iodine compounds. In light of this new discovery, this article provides an overview of the reactions of iodonium ylides in which halogen bonding has been invoked. Herein, we summarize key discoveries and mechanistic proposals from the early iodonium ylide literature that invoked halogen bonding-type mechanisms, as well as recent reports of reactions between iodonium ylides and Lewis basic nucleophiles in which halogen bonding has been specifically invoked. The reactions discussed herein are organized to enable the reader to build an understanding of how halogen bonding might impact yield and chemoselectivity outcomes in reactions of iodonium ylides. Areas of focus include nucleophile σ-hole selectivity, and how ylide structural modifications and intramolecular halogen bonding (e.g., the ortho-effect) can improve ylide stability or solubility, and alter reaction outcomes.
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Affiliation(s)
- Carlee A Montgomery
- Department of Chemistry, University of Waterloo, 200 University Ave W., Waterloo, Ontario, N2L3G1, Canada
| | - Graham K Murphy
- Department of Chemistry, University of Waterloo, 200 University Ave W., Waterloo, Ontario, N2L3G1, Canada
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15
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de Jong J, Bos JE, Wezenberg SJ. Stimulus-Controlled Anion Binding and Transport by Synthetic Receptors. Chem Rev 2023; 123:8530-8574. [PMID: 37342028 PMCID: PMC10347431 DOI: 10.1021/acs.chemrev.3c00039] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Indexed: 06/22/2023]
Abstract
Anionic species are omnipresent and involved in many important biological processes. A large number of artificial anion receptors has therefore been developed. Some of these are capable of mediating transmembrane transport. However, where transport proteins can respond to stimuli in their surroundings, creation of synthetic receptors with stimuli-responsive functions poses a major challenge. Herein, we give a full overview of the stimulus-controlled anion receptors that have been developed thus far, including their application in membrane transport. In addition to their potential operation as membrane carriers, the use of anion recognition motifs in forming responsive membrane-spanning channels is discussed. With this review article, we intend to increase interest in transmembrane transport among scientists working on host-guest complexes and dynamic functional systems in order to stimulate further developments.
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Affiliation(s)
| | | | - Sander J. Wezenberg
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333
CC Leiden, The Netherlands
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16
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Lutolli A, Che M, Parks FC, Raghavachari K, Flood AH. Cooperativity in Photofoldamer Chloride Double Helices Turned On with Sequences and Solvents, Around with Guests, and Off with Light. J Org Chem 2023. [PMID: 37130263 DOI: 10.1021/acs.joc.3c00112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Photofoldamers are sequence-defined receptors capable of switching guest binding on and off. When two foldamer strands wrap around the guest into 2:1 double helical complexes, cooperativity emerges, and with it comes the possibility to switch cooperativity with light and other stimuli. We use lessons from nonswitchable sequence isomers of aryl-triazole foldamers to guide how to vary the sequence location of azobenzenes from the end (FEND) to the interior (FIN) and report their impact on the cooperative formation of 2:1 complexes with Cl-. This sequence change produces a 125-fold increase from anti-cooperative (α = 0.008) for FEND to non-cooperative with FIN (α = 1.0). Density functional theory (DFT) studies show greater H-bonding and a more relaxed double helix for FIN. The solvent and guest complement the synthetic designs. Use of acetonitrile to enhance solvophobicity further enhances cooperativity in FIN (α = 126) but lowers the difference in cooperativity between sequences. Surprisingly, the impact of the sequence on cooperativity is inverted when the guest size is increased from Cl- (3.4 Å) to BF4- (4.1 Å). While photoconversion of interior azobenzenes was poor, the cis-cis isomer forms 1:1 complexes around chloride consistent with switching cooperativity. The effect of the guest, solvent, and light on the double-helix cooperativity depends on the sequence.
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Affiliation(s)
- Alketa Lutolli
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Minwei Che
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Fred C Parks
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Amar H Flood
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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17
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Bouteille Q, Sonet D, Hennebelle M, Desvergne JP, Morvan E, Scalabre A, Pouget E, Méreau R, Bibal B. Singlet Oxygen Responsive Molecular Receptor to Modulate Atropisomerism and Cation Binding. Chemistry 2023; 29:e202203210. [PMID: 36639240 DOI: 10.1002/chem.202203210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Indexed: 01/15/2023]
Abstract
In switchable molecular recognition, 1 O2 stimulus responsive receptors offer a unique structural change that is rarely exploited. The employed [4+2] reaction between 1 O2 and anthracene derivatives is quantitative, reversible and easily implemented. To evaluate the full potential of this new stimulus, a non-macrocyclic anthracene-based host was designed for the modular binding of cations. The structural investigation showed that 1 O2 controlled the atropisomerism in an on/off fashion within the pair of hosts. The binding studies revealed higher association constants for the endoperoxide receptor compared to the parent anthracene, due to a more favoured preorganization of the recognition site. The fatigue of the 1 O2 switchable hosts and their complexes was monitored over five cycles of cycloaddition/cycloreversion.
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Affiliation(s)
- Quentin Bouteille
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Dorian Sonet
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Marc Hennebelle
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Jean-Pierre Desvergne
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Estelle Morvan
- Institut Européen de Chimie et Biologie, UAR 3033 CNRS INSERM, Université de Bordeaux, 2 rue Roger Escarpit, 33607, Pessac, France
| | - Antoine Scalabre
- Chimie et Biologie des Membranes et des Nanoobjets, UMR CNRS 5248, Université de Bordeaux, 2 rue Roger Escarpit, 33607, Pessac, France
| | - Emilie Pouget
- Chimie et Biologie des Membranes et des Nanoobjets, UMR CNRS 5248, Université de Bordeaux, 2 rue Roger Escarpit, 33607, Pessac, France
| | - Raphaël Méreau
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Brigitte Bibal
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
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18
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Jin Y, Mandal PK, Wu J, Böcher N, Huc I, Otto S. (Re-)Directing Oligomerization of a Single Building Block into Two Specific Dynamic Covalent Foldamers through pH. J Am Chem Soc 2023; 145:2822-2829. [PMID: 36705469 PMCID: PMC9912251 DOI: 10.1021/jacs.2c09325] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Dynamic foldamers are synthetic folded molecules which can change their conformation in response to an external stimulus and are currently at the forefront of foldamer chemistry. However, constitutionally dynamic foldamers, which can change not only their conformation but also their molecular constitution in response to their environment, are without precedent. We now report a size- and shape-switching small dynamic covalent foldamer network which responds to changes in pH. Specifically, acidic conditions direct the oligomerization of a dipeptide-based building block into a 16-subunit macrocycle with well-defined conformation and with high selectivity. At higher pH the same building block yields another cyclic foldamer with a smaller ring size (9mer). The two foldamers readily and repeatedly interconvert upon adjustment of the pH of the solution. We have previously shown that addition of a template can direct oligomerization of the same building block to yet other rings sizes (including a 12mer and a 13mer, accompanied by a minor amount of 14mer). This brings the total number of discrete foldamers that can be accessed from a single building block to five. For a single building block system to exhibit such highly diverse structure space is unique and sets this system of foldamers apart from proteins. Furthermore, the emergence of constitutional dynamicity opens up new avenues to foldamers with adaptive behavior.
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Affiliation(s)
- Yulong Jin
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, China,Centre
for Systems Chemistry, Stratingh Institute, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Pradeep K. Mandal
- Department
of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians Universität, 81377 Munich, Germany
| | - Juntian Wu
- Centre
for Systems Chemistry, Stratingh Institute, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Niklas Böcher
- Department
of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians Universität, 81377 Munich, Germany
| | - Ivan Huc
- Department
of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians Universität, 81377 Munich, Germany,
| | - Sijbren Otto
- Centre
for Systems Chemistry, Stratingh Institute, Nijenborgh 4, 9747 AG Groningen, The Netherlands,
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19
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Yang F, Yue B, Zhu L. Light-triggered Modulation of Supramolecular Chirality. Chemistry 2023; 29:e202203794. [PMID: 36653305 DOI: 10.1002/chem.202203794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/20/2023]
Abstract
Dynamically controlling the supramolecular chirality is of great significance in development of functional chiral materials, which is thus essential for the specific function implementation. As an external energy input, light is remote and accurate for modulating chiral assemblies. In non-polarized light control, some photochemically reactive units (e. g., azobenzene, ɑ-cyanostilbene, spiropyran, anthracene) or photo-induced directionally rotating molecular motors were designed to drive chiral transfer or amplification. Besides, photoexcitation induced assembly based physical approach was also explored recently to regulate supramolecular chirality beyond photochemical reactions. In addition, circularly polarized light was applied to induce asymmetric arrangement of organic molecules and asymmetric photochemical synthesis of inorganic metallic nanostructures, in which both wavelength and handedness of circularly polarized light have effects on the induced supramolecular chirality. Although light-triggered chiral assemblies have been widely applied in photoelectric materials, biomedical fields, soft actuator, chiral catalysis and chiral sensing, there is a lack of systematic review on this topic. In this review, we summarized the recent studies and perspectives in the constructions and applications of light-responsive chiral assembled systems, aiming to provide better knowledge for the development of multifunctional chiral nanomaterials.
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Affiliation(s)
- Fan Yang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Bingbing Yue
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China.,State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China
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20
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Kerckhoffs A, Moss I, Langton MJ. Photo-switchable anion binding and catalysis with a visible light responsive halogen bonding receptor. Chem Commun (Camb) 2022; 59:51-54. [PMID: 36440635 DOI: 10.1039/d2cc05199k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Photo-switchable receptors allow for photo-control over guest binding and release with spatial and temporal precision. Here we report the first halogen bonding photo-switchable anion receptors in which chloride binding may be reversibly modulated by irradiation with red and blue light, with over a 50-fold enhancement in chloride binding affinity observed for the Z isomer. We demonstrate that this switchable binding enables unprecedented photo-controlled catalysis of XB-mediated halide abstractions and a Mukaiyama Aldol reaction.
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Affiliation(s)
- Aidan Kerckhoffs
- Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.
| | - Isabelle Moss
- Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.
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21
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Zhang W, Zhao J, Yang D. Anion-Coordination-Driven Assembly: From Discrete Supramolecular Self-Assemblies to Functional Soft Materials. Chempluschem 2022; 87:e202200294. [PMID: 36410745 DOI: 10.1002/cplu.202200294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/18/2022] [Indexed: 01/31/2023]
Abstract
Anion templated assembly of supramolecular systems has been extensively explored in previous reports, whereas anions serve only as an auxiliary and spectator role. With the development of anion coordination chemistry in recent years, anion coordination-driven assembly (ACDA) has emerged as a new strategy for the construction of supramolecular self-assemblies. Anions are proved to exist as the main actors in the construction of supramolecular architectures, i. e., serve as the coordination center. This Review will focus on the recent progress in anion-coordination-driven assembly of discrete supramolecular architectures, such as helicates, polyhedrons and polygons, and the various applications of 'aniono'-systems. At the end of this Review, we highlight current challenges and opportunities for future research of anion-coordination-driven self-assembly.
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Affiliation(s)
- Wenyao Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, P. R. China.,Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Material Science, Shanxi Normal University, Taiyuan, 030006, P. R. China
| | - Jie Zhao
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, P. R. China
| | - Dong Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, P. R. China
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22
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Formation of supramolecular channels by reversible unwinding-rewinding of bis(indole) double helix via ion coordination. Nat Commun 2022; 13:6507. [PMID: 36316309 PMCID: PMC9622825 DOI: 10.1038/s41467-022-34159-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 10/14/2022] [Indexed: 12/03/2022] Open
Abstract
Stimulus-responsive reversible transformation between two structural conformers is an essential process in many biological systems. An example of such a process is the conversion of amyloid-β peptide into β-sheet-rich oligomers, which leads to the accumulation of insoluble amyloid in the brain, in Alzheimer's disease. To reverse this unique structural shift and prevent amyloid accumulation, β-sheet breakers are used. Herein, we report a series of bis(indole)-based biofunctional molecules, which form a stable double helix structure in the solid and solution state. In presence of chloride anion, the double helical structure unwinds to form an anion-coordinated supramolecular polymeric channel, which in turn rewinds upon the addition of Ag+ salts. Moreover, the formation of the anion-induced supramolecular ion channel results in efficient ion transport across lipid bilayer membranes with excellent chloride selectivity. This work demonstrates anion-cation-assisted stimulus-responsive unwinding and rewinding of artificial double-helix systems, paving way for smart materials with better biomedical applications.
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23
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Qiu Y, Zhang Y, Jiang Q, Wang H, Liao Y, Zhou H, Xie X. Highly Specific and Sensitive Naked-Eye Fluoride Ion Recognition via Unzipping a Helical Poly(phenylacetylene). Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuan Qiu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yang Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qian Jiang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hong Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yonggui Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Huamin Zhou
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaolin Xie
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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24
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Wu Y, Zhang C, Fang S, Zhu D, Chen Y, Ge C, Tang H, Li H. A Self‐Assembled Cage Binding Iodide Anions over Other Halide Ions in Water. Angew Chem Int Ed Engl 2022; 61:e202209078. [DOI: 10.1002/anie.202209078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Yating Wu
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Chi Zhang
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Shuai Fang
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Dingsheng Zhu
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Yixin Chen
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Chenqi Ge
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Hua Tang
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Hao Li
- Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang University Hangzhou 311215 P. R. China
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25
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Azobenzene‐based Photochromic Delivery Vehicles for Ions and Small Molecules. Chemistry 2022; 28:e202201902. [DOI: 10.1002/chem.202201902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Indexed: 11/07/2022]
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26
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Wu Y, Zhang C, Fang S, Zhu D, Chen Y, Ge C, Tang H, Li H. A Self‐Assembled Cage Binding Iodide Anion over Halide Ions in Water. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209078] [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)
- Yating Wu
- Zhejiang University Department of Chemistry CHINA
| | - Chi Zhang
- Zhejiang University Department of Chemistry CHINA
| | - Shuai Fang
- Zhejiang University Department of Chemistry CHINA
| | | | - Yixin Chen
- Zhejiang University Department of Chemistry CHINA
| | - Chenqi Ge
- Zhejiang University Department of Chemistry CHINA
| | - Hua Tang
- Zhejiang University Department of Chemistry CHINA
| | - Hao Li
- Zhejiang University Department of Chemistry Zhejiang UniversityYuquan CampusNo.8 buildingroom 514 310027 Hangzhou CHINA
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27
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Kumar P, Gupta D, Grewal S, Srivastava A, Kumar Gaur A, Venkataramani S. Multiple Azoarenes Based Systems - Photoswitching, Supramolecular Chemistry and Application Prospects. CHEM REC 2022; 22:e202200074. [PMID: 35860915 DOI: 10.1002/tcr.202200074] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/16/2022] [Indexed: 11/05/2022]
Abstract
In the recent decades, the investigations on photoresponsive molecular systems with multiple azoarenes are quite popular in diverse perspectives ranging from fundamental understanding of multiple photoswitches, supramolecular chemistry, and various application prospects. In fact, several insightful and conceptual designs of such systems were investigated with architectural distinctions. In particular, the demonstration of applications such as data storage with the help of multistate or orthogonal photoswitches, light modulation of catalysis via cooperative switching, sensors using supramolecular host-guest interactions, and materials such as liquid crystals, grating, actuators, etc. are some of the milestones in this area. Herein, we cover the recent advancements in the research areas of multiazoarenes containing systems that have been classified into Type-1 {linear, non-linear, and core-based (A)}, Type-2 {tripodal C3 -symmetric (C3)} and Type-3 {macrocyclic (M)} structural motifs.
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Affiliation(s)
- Pravesh Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Debapriya Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Surbhi Grewal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Anjali Srivastava
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Ankit Kumar Gaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, SAS Nagar, Manauli (PO), Punjab, 140306, INDIA
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28
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Meier D, Schoof B, Wang J, Li X, Walz A, Huettig A, Schlichting H, Rosu F, Gabelica V, Maurizot V, Reichert J, Papageorgiou AC, Huc I, Barth JV. Structural adaptations of electrosprayed aromatic oligoamide foldamers on Ag(111). Chem Commun (Camb) 2022; 58:8938-8941. [PMID: 35851385 DOI: 10.1039/d2cc03286d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic foldamers are promising for applications such as molecular recognition and molecular machinery. For many of these, defect free, 2D-crystaline monolayers are needed. To this end, submonolayers were prepared in ultra-high vacuum (UHV) on Ag(111) via electrospray controlled ion beam deposition (ES-CIBD). On the surface, the unfolded state is unambiguously identified by real-space single-molecule imaging using scanning tunnelling microscopy (STM) and it is found to assemble in regular structures.
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Affiliation(s)
- Dennis Meier
- Physics Department E20, Technical University Munich, D-85748 Garching, Germany.
| | - Benedikt Schoof
- Physics Department E20, Technical University Munich, D-85748 Garching, Germany.
| | - Jinhua Wang
- CBMN (UMR 5248), Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
| | - Xuesong Li
- CBMN (UMR 5248), Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
| | - Andreas Walz
- Physics Department E20, Technical University Munich, D-85748 Garching, Germany.
| | - Annette Huettig
- Physics Department E20, Technical University Munich, D-85748 Garching, Germany.
| | - Hartmut Schlichting
- Physics Department E20, Technical University Munich, D-85748 Garching, Germany.
| | - Frédéric Rosu
- Institut Européen de Chimie et Biologie (UAR3033/US001), Univ. Bordeaux, CNRS, INSERM, F-33600 Pessac, France
| | - Valérie Gabelica
- Institut Européen de Chimie et Biologie (UAR3033/US001), Univ. Bordeaux, CNRS, INSERM, F-33600 Pessac, France.,ARNA (U1212), Univ. Bordeaux, INSERM, CNRS, F-33600 Pessac, France
| | - Victor Maurizot
- CBMN (UMR 5248), Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
| | - Joachim Reichert
- Physics Department E20, Technical University Munich, D-85748 Garching, Germany.
| | | | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-University Munich, D-81377 Munich, Germany. .,Cluster of Excellence e-conversion, D-85748 Garching, Germany
| | - Johannes V Barth
- Physics Department E20, Technical University Munich, D-85748 Garching, Germany. .,Cluster of Excellence e-conversion, D-85748 Garching, Germany
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29
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Wu P, Ren H, Han D, Yu S. The Colorimetric Sensor Based on Azobenzenes with Sulfonamide Group for Fluorine Ion and Moisture Detection in Organic Solvents. ChemistrySelect 2022. [DOI: 10.1002/slct.202200992] [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)
- Ping Wu
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin People's Republic of China
| | - Hong Ren
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin People's Republic of China
| | - Dandan Han
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin People's Republic of China
| | - Shihua Yu
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin People's Republic of China
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30
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Wang Y, Li B, Zhu J, Zhang W, Zheng B, Zhao W, Tang J, Yang X, Wu B. Light‐Triggered High‐Affinity Binding of Tetramethylammonium over Potassium Ions by [18]crown‐6 in a Tetrahedral Anion Cage. Angew Chem Int Ed Engl 2022; 61:e202201789. [DOI: 10.1002/anie.202201789] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Indexed: 01/18/2023]
Affiliation(s)
- Yue Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Boyang Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Jiajia Zhu
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Wenyao Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Bo Zheng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Wei Zhao
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Juan Tang
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Xiao‐Juan Yang
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
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31
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Einkauf JD, Bryantsev VS, Moyer BA, Custelcean R. A Photoresponsive Receptor with a 10
5
Magnitude of Reversible Anion‐Binding Switching. Chemistry 2022; 28:e202200719. [DOI: 10.1002/chem.202200719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Jeffrey D. Einkauf
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831-6119 USA
| | | | - Bruce A. Moyer
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831-6119 USA
| | - Radu Custelcean
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831-6119 USA
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32
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Li H, Kou L, Liang L, Li B, Zhao W, Yang XJ, Wu B. Anion-coordination-driven single-double helix switching and chiroptical molecular switching based on oligoureas. Chem Sci 2022; 13:4915-4921. [PMID: 35655878 PMCID: PMC9067589 DOI: 10.1039/d2sc00876a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/02/2022] [Indexed: 11/21/2022] Open
Abstract
Synthetic foldamers with helical conformation are widely seen, but controllable interconversion amongst different geometries (helical structure and sense) is challenging. Here, a family of oligourea (tetra-, penta-, and hexa-) ligands bearing stereocenters at both ends are designed and shown to switch between single and double helices with concomitant inversion of helical senses upon anion coordination. The tetraurea ligand forms a right-handed single helix upon chloride anion (Cl-) binding and is converted into a left-handed double helix when phosphate anion (PO4 3-) is coordinated. The helical senses of the single and double helices are opposite, and the conversion is further found to be dependent on the stoichiometry of the ligand and phosphate anion. In contrast, only a single helix is formed for the hexaurea ligand with the phosphate anion. This distinction is attributed to the fact that the characteristic phosphate anion coordination geometry is satisfied by six urea moieties with twelve H-bonds. Our study revealed unusual single-double helix interconversion accompanied by unexpected chiroptical switching of helical senses.
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Affiliation(s)
- Hongfei Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
| | - Lei Kou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
| | - Lin Liang
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
| | - Boyang Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
| | - Wei Zhao
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
| | - Xiao-Juan Yang
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
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33
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Wang Y, Li B, Zhu J, Zhang W, Zheng B, Zhao W, Tang J, Yang X, Wu B. Light‐Triggered High‐Affinity Binding of Tetramethylammonium over Potassium Ions by [18]crown‐6 in a Tetrahedral Anion Cage. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yue Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Boyang Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Jiajia Zhu
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Wenyao Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Bo Zheng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
| | - Wei Zhao
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Juan Tang
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Xiao‐Juan Yang
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 China
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
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34
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Gole B, Kauffmann B, Tron A, Maurizot V, McClenaghan N, Huc I, Ferrand Y. Selective and Cooperative Photocycloadditions within Multistranded Aromatic Sheets. J Am Chem Soc 2022; 144:6894-6906. [PMID: 35380826 DOI: 10.1021/jacs.2c01269] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A series of aromatic helix-sheet-helix oligoamide foldamers composed of several different photosensitive diazaanthracene units have been designed and synthesized. Molecular objects up to 7 kDa were straightforwardly produced on a 100 mg scale. Nuclear magnetic resonance and crystallographic investigations revealed that helix-sheet-helix architectures can adopt one or two distinct conformations. Sequences composed of an even number of turn units were found to fold in a canonical symmetrical conformation with two helices of identical handedness stacked above and below the sheet segment. Sequences composed of an odd number of turns revealed a coexistence between a canonical fold with helices of opposite handedness and an alternate fold with a twist within the sheet and two helices of identical handedness. The proportions between these species could be manipulated, in some cases quantitatively, being dependent on solvent, temperature, and absolute control of helix handedness. Diazaanthracene units were shown to display distinct reactivity toward [4 + 4] photocycloadditions according to the substituent in position 9. Their organization within the sequences was programmed to allow photoreactions to take place in a specific order. Reaction pathways and kinetics were deciphered and product characterized, demonstrating the possibility to orchestrate successive photoreactions so as to avoid orphan units or to deliberately produce orphan units at precise locations. Strong cooperative effects were observed in which the photoreaction rate was influenced by the presence (or absence) of photoadducts in the structure. Multiple photoreactions within the aromatic sheet eventually lead to structure lengthening and stiffening, locking conformational equilibria. Photoproducts could be thermally reverted.
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Affiliation(s)
- Bappaditya Gole
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France
| | - Brice Kauffmann
- Univ. Bordeaux, CNRS, INSERM, Institut Européen de Chimie Biologie (UMS3033/US001), 2 rue Escarpit, 33600 Pessac, France
| | - Arnaud Tron
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France
| | - Victor Maurizot
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France
| | - Nathan McClenaghan
- Univ. Bordeaux, CNRS, Institut des Sciences Moléculaires (UMR5255), 351 cours de la Libération, 33405 Talence cedex, France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandtstr. 5-13, 81377 Munich, Germany.,Cluster of Excellence e-Conversion, 85748 Garching, Germany
| | - Yann Ferrand
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique, CBMN (UMR 5248), 2 rue Escarpit, 33600 Pessac, France
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35
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Mirzaei S, Espinoza Castro VM, Hernández Sánchez R. Nonspherical anion sequestration by C-H hydrogen bonding. Chem Sci 2022; 13:2026-2032. [PMID: 35308854 PMCID: PMC8849022 DOI: 10.1039/d1sc07041j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 01/22/2022] [Indexed: 12/05/2022] Open
Abstract
Macrocyclic arenes laid the foundations of supramolecular chemistry and their study established the fundamentals of noncovalent interactions. Advancing their frontier, here we designed rigidified resorcin[4]arenes that serve as hosts for large nonspherical anions. In one synthetic step, we vary the host's anion affinity properties by more than seven orders of magnitude. This is possible by engineering electropositive aromatic C–H bond donors in an idealized square planar geometry embedded within the host's inner cavity. The hydrogen atom's electropositivity is tuned by introducing fluorine atoms as electron withdrawing groups. These novel macrocycles, termed fluorocages, are engineered to sequester large anions. Indeed, experimental data shows an increase in the anion association constant (Ka) as the number of F atoms increase. The observed trend is rationalized by DFT calculations of Hirshfeld Charges (HCs). Most importantly, fluorocages in solution showed weak-to-medium binding affinity for large anions like [PF6]− (102< Ka <104 M−1), and high affinity for [MeSO3]− (Ka >106). Fluorocages: new class of rigidified host utilizing nontraditional C–H hydrogen bonds to capture the nonspherical anions.![]()
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Affiliation(s)
- Saber Mirzaei
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
| | - Victor M Espinoza Castro
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
| | - Raúl Hernández Sánchez
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
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36
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Jang HJ, Lee S, An BJ, Song G, Jeon HG, Jeong KS. Tweezer-type binding cavity formed by the helical folding of a carbazole-pyridine oligomer. Chem Commun (Camb) 2022; 58:1410-1413. [PMID: 34994755 DOI: 10.1039/d1cc06569f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We have synthesised a new aromatic foldamer based on the carbazole-pyridine oligomers that adopt helical conformations via dipole-dipole interactions and π-stacking between two ethynyl bond-linked monomers. This foldamer scaffold has been further modified into a synthetic receptor with a tweezer-type binding cavity outside the helical backbone upon folding, in contrast to most aromatic foldamers with internal binding cavities. The tweezer-type cavity is composed of two parallel pyrenyl planes, allowing for the intercalation of a naphthalenediimide guest via π-stacking and CH⋯O interactions, as demonstrated using its 1H NMR spectra and X-ray crystal structure.
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Affiliation(s)
- Hye Jin Jang
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
| | - Seungwon Lee
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
| | - Byung Jun An
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
| | - Geunmoo Song
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
| | - Hae-Geun Jeon
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
| | - Kyu-Sung Jeong
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
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37
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Hamashima K, Yuasa J. Entropy Versus Enthalpy Controlled Temperature/Redox Dual‐Triggered Cages for Selective Anion Encapsulation and Release. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kyosuke Hamashima
- Department of Applied Chemistry Tokyo University of Science 1–3 Kagurazaka Shinjuku-ku, Tokyo 162-8601 Japan
| | - Junpei Yuasa
- Department of Applied Chemistry Tokyo University of Science 1–3 Kagurazaka Shinjuku-ku, Tokyo 162-8601 Japan
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38
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Parks FC, Sheetz EG, Stutsman SR, Lutolli A, Debnath S, Raghavachari K, Flood AH. Revealing the Hidden Costs of Organization in Host-Guest Chemistry Using Chloride-Binding Foldamers and Their Solvent Dependence. J Am Chem Soc 2022; 144:1274-1287. [PMID: 35015538 DOI: 10.1021/jacs.1c10758] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Preorganization is a key concept in supramolecular chemistry. Preorganized receptors enhance binding by minimizing the organization costs associated with adopting the conformation needed to orient the binding sites toward the guest. Conversely, poorly organized receptors show affinities below what is possible based on the potential of their specific binding interactions. Despite the fact that the organization energy is paid each time like a tax, its value has never been measured directly, though many compounds have been developed to measure its effects. We present a method to quantify the hidden costs of receptor organization by independently measuring the contribution it makes to chloride complexation by a flexible foldameric receptor. This method uses folding energy to approximate organization energy and relies on measurement of the coil-helix equilibrium as a function of solvent. We also rely on the finding, established with rigid receptors, that affinity is inversely related to the solvent dielectric and expect the same for the foldamer's helically organized state. Increasing solvent polarity across nine dichloromethane-acetonitrile mixtures we see an unusual V-shape in affinity (decrease then increase). Quantitatively, this shape arises from weakened hydrogen-bonding interactions with solvent polarity followed by solvent-driven folding into an organized helix. We confirm that dielectric screening impacts the stability of host-guest complexes of flexible foldamers just like rigid receptors. These results experimentally verify the canonical model of binding (affinity depends on the sum of organization and noncovalent interactions). The picture of how solvent impacts complex stability and conformational organization thereby helps lay the groundwork for de novo receptor design.
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Affiliation(s)
- Fred C Parks
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Edward G Sheetz
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Sydney R Stutsman
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Alketa Lutolli
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Sibali Debnath
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H Flood
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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39
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Peng WC, Wang H, Zhang DW, Li ZT. Folding and Aggregation of Oligoviologens in Water and Cucurbit[ n]uril ( n=7, 8) Modulation. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202108025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Xiong S, He Q. Photoresponsive macrocycles for selective binding and release of sulfate. Chem Commun (Camb) 2021; 57:13514-13517. [PMID: 34842255 DOI: 10.1039/d1cc05506b] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of new photoresponsive macrocyclic anion receptors were synthesized via integration of an azobenzene unit and multiple anion binding sites. They exhibited highly selective binding to dianionic sulfate over other tested anions and the reversible release of sulfate could be triggered by visible light as inferred from mass spectroscopy, crystallographical analysis, NMR spectroscopy, and theoretical calculations.
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Affiliation(s)
- Shenglun Xiong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineer Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Qing He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineer Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
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41
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Hamashima K, Yuasa J. Entropy Versus Enthalpy Controlled Temperature/Redox Dual-Triggered Cages for Selective Anion Encapsulation and Release. Angew Chem Int Ed Engl 2021; 61:e202113914. [PMID: 34796586 DOI: 10.1002/anie.202113914] [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: 10/13/2021] [Indexed: 11/08/2022]
Abstract
New C3 -symmetric imidazole ligands were designed with phosphine and phosphine oxide linkers (LP and LPO , respectively) to demonstrate a dual-triggered dynamic closed coordination cage. Both LP and LPO form discrete Zn4 L4 -closed cages (1P and 1PO , respectively) with excellent selectively for BPh4 - , whereas 1P and 1PO encapsulate neither a slightly larger size anion [B(C6 H4 CH3 )4 - ] nor smaller size anions (BF4 - , PF6 - , SbF6 - , and OSO2 CF3 - ). 1PO exhibits more negative enthalpy and entropy changes upon anion encapsulation, thus releasing almost all of the encapsulated anions at high temperature (343 K) (trigger 1: BPh4 - ⊂1PO ← → 1PO +BPh4 - ). In contrast 1P has less negative enthalpy and entropy changes, thus preserving the captured anion over a wide range of temperatures (298 K to 343 K). The 1P cage can be quantitatively oxidized to the 1PO cage by a mild oxidant (Ox.=H2 O2 ), and therefore the captured anion can be released by a redox triggering event (trigger 2: BPh4 - ⊂1P +Ox.→1PO +BPh4 - ).
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Affiliation(s)
- Kyosuke Hamashima
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Junpei Yuasa
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
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42
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Baranowska K, Mońka M, Bojarski P, Józefowicz M. Insight into Molecular Interactions of Two Methyl Benzoate Derivatives with Bovine Serum Albumin. Int J Mol Sci 2021; 22:11705. [PMID: 34769135 PMCID: PMC8584066 DOI: 10.3390/ijms222111705] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/16/2022] Open
Abstract
The nature and mechanisms of interaction between two selected methyl benzoate derivatives (methyl o-methoxy p-methylaminobenzoate-I and methyl o-hydroxy p-methylaminobenzoate-II) and model transport protein bovine serum albumin (BSA) was studied using steady-state and time-resolved spectroscopic techniques. In order to understand the role of Trp residue of BSA in the I-BSA and II-BSA interaction, the effect of free Trp amino acid on the both emission modes (LE-locally excited (I and II) and ESIPT-excited state intramolecular proton transfer (II)) was investigated as well. Experimental results show that the investigated interactions (with both BSA and Trp) are mostly conditioned by the ground and excited state complex formation processes. Both molecules form stable complexes with BSA and Trp (with 1:1 stoichiometry) in the ground and excited states. The binding constants were in the order of 104 M-1. The absorption- and fluorescence-titration experiments along with the time-resolved fluorescence measurements show that the binding of the I and II causes fluorescence quenching of BSA through the static mechanism, revealing a 1:1 interaction. The magnitude and the sign of the thermodynamic parameters, ΔH, ΔS, and ΔG, determined from van't Hoff relationship, confirm the predominance of the hydrogen-bonding interactions for the binding phenomenon. To improve and complete knowledge of methyl benzoate derivative-protein interactions in relation to supramolecular solvation dynamics, the time-dependent fluorescence Stokes' shifts, represented by the normalized spectral response function c(t), was studied. Our studies reveal that the solvation dynamics that occurs in subpicosecond time scale in neat solvents of different polarities is slowed down significantly when the organic molecule is transferred to BSA cavity.
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Affiliation(s)
| | | | | | - Marek Józefowicz
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, Wita Stwosza 57, 80-308 Gdańsk, Poland; (K.B.); (M.M.); (P.B.)
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43
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Zhou L, He R, Qin Y, Wu YL, Jiang L, Zhou DD, Zhang L. Multiple C-H⋯anion and N-H⋯anion hydrogen bond directed two-dimensional crystalline nanosheets with precise distance control of surface charges for enhanced DNA capture. SOFT MATTER 2021; 17:9125-9130. [PMID: 34570151 DOI: 10.1039/d1sm01152a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Utilizing combined non-covalent interactions and introducing anions as structure-directing factors to build oriented self-assembly and 2D crystalline nanosheet superstructures with precise distance control of surface charges in competitive aqueous solvents still represents a formidable challenge for supramolecular chemists. Here we report a simple, efficient, and general strategy for multiple C-H/N-H⋯anion hydrogen bond enhanced π-π interaction directed 2D oriented self-assembly in water, which is based on the head-to-tail association of perylene monoimide dimers (PMIs) by directing N-H⋯anion interactions to position the anions to the C-H of π systems (PMIs). Interesting, this behavior only occurs for size-matched anions (Cl- to NO3-; <45 Å3), while larger anions could not form 2D crystalline nanosheet superstructures. The results show that crystalline nanosheet superstructures with precise distance control of surface charges can effectively capture DNA, possibly due to their high surface charge density and the distance match between the distance of surface charges and the distance between adjacent base pairs.
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Affiliation(s)
- Laicheng Zhou
- PCFM Lab, and GDHPRC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Ran He
- PCFM Lab, and GDHPRC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Yang Qin
- PCFM Lab, and GDHPRC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Yi-Lin Wu
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK
| | - Li Jiang
- PCFM Lab, and GDHPRC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Dong-Dong Zhou
- PCFM Lab, and GDHPRC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Ling Zhang
- PCFM Lab, and GDHPRC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
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Song G, Kim KM, Lee S, Jeong KS. Subtle Modification of Imine-linked Helical Receptors to Significantly Alter their Binding Affinities and Selectivities for Chiral Guests. Chem Asian J 2021; 16:2958-2966. [PMID: 34378325 DOI: 10.1002/asia.202100768] [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: 07/07/2021] [Revised: 08/04/2021] [Indexed: 11/07/2022]
Abstract
Aromatic helical receptors P-1 and P-2 were slightly modified by aerobic oxidation to afford new receptors P-7 and P-8 with right-handed helical cavities. This subtle modification induced significant changes in the binding properties for chiral guests. Specifically, P-1 was reported to bind d-tartaric acid (Ka =35500 M-1 ), used as a template, much strongly than l-tartaric acid (326 M-1 ). In contrast, its modified receptor P-7 exhibited significantly reduced affinities for d-tartaric acid (3600 M-1 ) and l-tartaric acid (125 M-1 ). More dramatic changes in the affinities and selectivities were observed for P-2 and P-8 upon binding of polyol guests. P-2 was determined to selectively bind d-sorbitol (52000 M-1 ) over analogous guests, but P-8 showed no binding selectivity: d-sorbitol (1890 M-1 ), l-sorbitol (3330 M-1 ), d-arabitol (959 M-1 ), l-arabitol (4970 M-1 ) and xylitol (4960 M-1 ) in 5% (v/v) DMSO/CH2 Cl2 at 25±1 °C. These results clearly demonstrate that even subtle post-modifications of synthetic receptors may significantly alter their binding affinities and selectivities, in particular for guests of long and flexible chains.
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Affiliation(s)
- Geunmoo Song
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Kyung Mog Kim
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Seungwon Lee
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Kyu-Sung Jeong
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
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Li D, Ma C, Xiang J, Zhang K, Yang L, Gan Q. A Disulfide Switch Providing Absolute Handedness Control in Double Helices via Conversion from the Antiparallel to Parallel Helical Pattern. Chemistry 2021; 27:11663-11669. [PMID: 34014575 DOI: 10.1002/chem.202101221] [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: 04/06/2021] [Indexed: 11/09/2022]
Abstract
A strategy to reversibly switch the parallel/antiparallel helical conformation of aromatic double helices through the formation/breakage of a disulfide bond is presented. Single-crystal X-ray structures, NMR, and circular dichroism spectroscopy demonstrate that the double helices with terminal thiol groups favor an antiparallel helical arrangement both in the solid state and in solution, while the P/M bias of helicity induced by chiral segments from another extremity of the sequence is weak in this structural motif. The antiparallel helices can be rearranged to parallel helices through the disulfide connection of the sequences. This change enhances the bias of helical handedness and results in absolute chirality control of the double helices. The handedness-mediated process can be governed by the oxidation-reduction cycle, thereby switching the structural arrangement and the enhancement of chiral bias. In addition, we find that the sequences can dimerize into an intermolecular double helix with the disulfide connection. And the helical handedness is also fully controlled due to the head-to-head structural motif.
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Affiliation(s)
- Dongyao Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Chunmiao Ma
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Junfeng Xiang
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Kai Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Ling Yang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Quan Gan
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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Preston D. Discrete Self-Assembled Metallo-Foldamers with Heteroleptic Sequence Specificity. Angew Chem Int Ed Engl 2021; 60:20027-20035. [PMID: 34263526 DOI: 10.1002/anie.202108456] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Indexed: 01/23/2023]
Abstract
Discrete and structurally diverse foldamer sequences are constructed in both natural and abiotic systems primarily using inert connectivity with irreversible organic covalent bonds, serving to preserve the identity of the sequence. The formation of sequences under thermodynamic control using labile coordination bonds would be attractive for synthetic ease and modular capability, but this presents issues regarding sequence preservation. Here is presented an approach integrating palladium(II) metal ions into the sequence itself, with fidelity maintained through use of complementary pairings of ligand arrangements at the metal centre. This is accomplished using sites of different denticity and/or hydrogen bonding capability. In this fashion, discrete and ordered metallo-sequences are formed as thermodynamic products in a single step, and these then fold into defined conformations due to π-π interactions between electron-rich and -poor aromatic regions of the combined componentry.
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Affiliation(s)
- Dan Preston
- Research School of Chemistry, Australian National University, Canberra, ACT, 2600, Australia
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Preston D. Discrete Self‐Assembled Metallo‐Foldamers with Heteroleptic Sequence Specificity. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108456] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dan Preston
- Research School of Chemistry Australian National University Canberra ACT 2600 Australia
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48
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Lv S, Li X, Yang L, Ren H, Jiang J. Computational design of photoswitchable anion receptors: Red-shifted and bistable di-ortho-fluoro di-ortho-chloro azobenzene derivatives. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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49
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Mukherjee A, Saha PC, Das RS, Bera T, Guha S. Acidic pH-Activatable Visible to Near-Infrared Switchable Ratiometric Fluorescent Probe for Live-Cell Lysosome Targeted Imaging. ACS Sens 2021; 6:2141-2146. [PMID: 34125510 DOI: 10.1021/acssensors.1c00961] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Here, we have designed and synthesized acidic pH-activatable visible to NIR switchable ratiometric pH-sensitive fluorescent dye. The design consists of a cell-permeable organic probe containing a lysosome targeting morpholine functionality and an acidic pH-activatable oxazolidine moiety. The visible closed oxazolidine form (λabs 418 nm) can be switched to the highly conjugated NIR Cy-7 form (λabs 780 nm) through ring opening of the oxazolidine moiety at acidic pH. This switching of the ratiometric fluorescent probe is highly reversible and can be controlled by pH. NMR, UV/vis, and fluorescence spectroscopies allowed monitoring of pH switching behavior of the probe. This bioresponsive in situ acidic organelle activatable fluorophore showed reversible pH-switchable ratiometric optical properties, high photostability, huge bathochromic emission shift of 320 nm from basic to acidic pH, off-to-on narrow NIR absorption and emission bands with enhanced molar extinction coefficient at lysosomal pH, good quantum yield, low cytotoxicity, and targeted imaging ability of live cell lysosomes with ideal pKa. The report demonstrated ratiometric imaging with improved specificity of the acidic lysosome while minimizing signals at the NIR region from nontargeted neutral or basic organelles in human carcinoma HeLa and A549 as well as rat healthy H9c2(2-1) live cells, which is monitored by confocal laser scanning microscopy.
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Affiliation(s)
- Ayan Mukherjee
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Pranab Chandra Saha
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Rabi Sankar Das
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Tapas Bera
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Samit Guha
- Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata 700032, India
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50
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Guo XQ, Zhou LP, Hu SJ, Cai LX, Cheng PM, Sun QF. Hexameric Lanthanide-Organic Capsules with Tertiary Structure and Emergent Functions. J Am Chem Soc 2021; 143:6202-6210. [PMID: 33871254 DOI: 10.1021/jacs.1c01168] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biological macromolecules always function through a collective behavior of the aggregated constituents, which usually are self-assembled together via noncovalent interactions. Likewise, artificial supramolecular assemblies, whose properties and functions are mainly derived from their primary and secondary structures, may also aggregate into high-order architectures with emergent functions not available on the individual components. Here we report the first example of an insulin-like hexamerization of lanthanide triple helicates toward a 4 nm diameter hexameric capsule via consecutive metal-directed and anion-directed assembly processes. Hierarchical chiral-sorting self-assembly endows hexamers with aggregation-induced stability and emission enhancement. Furthermore, emergent guest-encapsulation function and enantioselectivity toward terpene drugs have been realized in the late-formed central cavity of the hexamers. This study not only provides a feasible strategy for constructing sophisticated and multifunctional lanthanide-organic materials but also sheds some light on the self-assembly processes in nature.
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Affiliation(s)
- Xiao-Qing Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Li-Peng Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Shao-Jun Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Li-Xuan Cai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Pei-Ming Cheng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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