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Lee H, Yang MY, Raskatov JA, Kim H, Goddard WA. Molecular Dynamics Studies of Atomistically Determined Fibrillar Assemblies: Comparison of the Rippled β-Sheet, Pleated β-Sheet, and Herringbone Structures. J Phys Chem Lett 2024; 15:4568-4574. [PMID: 38639377 DOI: 10.1021/acs.jpclett.4c00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Pauling and Corey expected that a racemic mixture would result in a rippled β-sheet, however, it has been known from experiments that the racemic mixtures of triphenylalanine lead to a herringbone structure. Because of the theoretical limitations concerning crystal structures such as rippled β-sheet, it is inevitable to understand how the interplay of the amino acids prefers a specific structural motif. In this paper we use molecular dynamics to understand the sequence- and enantiomer-dependent structures by comparisons between rippled β-sheet and pleated β-sheet, solvated and anhydrous rippled β-sheet, and rippled β-sheet and the herringbone structure, based on thermodynamics and structures at the atomic level. The tripeptides select the favored structure that can be stabilized through aromatic or hydrogen bonding interactions between tripeptides. Furthermore, the solubility is determined by the environment of space that is created around the side chains. Our findings provide comprehensive insight into the crystallized fibril motif of the polypeptide.
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Affiliation(s)
- Hyeonju Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-Ro, Yuseong-Gu, Daejeon 34141, Republic of Korea
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - Moon Young Yang
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - Jevgenij A Raskatov
- UC Santa Cruz Department of Chemistry and Biochemistry, UCSC, 1156 High Street, Santa Cruz, California 95064, United States
| | - Hyungjun Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-Ro, Yuseong-Gu, Daejeon 34141, Republic of Korea
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - William A Goddard
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
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2
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Wakchaure VC, Channareddy G, Babu SS. Solvent-Free Organic Liquids: An Efficient Fluid Matrix for Unexplored Functional Hybrid Materials. Acc Chem Res 2024; 57:670-684. [PMID: 38350079 DOI: 10.1021/acs.accounts.3c00670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
ConspectusThe invention of solvent-free organic liquids (SOLs) was serendipitous. However, the curiosity-driven research in the later stage delivered new soft materials with exciting optical, and optoelectronic properties along with appealing physical characteristics suitable for the futuristic applications. A slight change in the molecular design resulted in a drastic change in the physical state of molecules demonstrating monomer-like features in the bulk. The basic idea of core isolation has been successful in delivering new SOLs with attractive functional properties. The unique fluid matrix associated with SOLs offers a tremendous opportunity for making hybrid materials by simple mixing. The chance to study the fundamentally important electron transfer, energy transfer, charge transfer interactions, triplet-state emissions, and even detailed NMR experiments in the solvent-free neat state is the major attraction of SOLs. Usually, solvents and their polarity control such molecular properties, and in the case of SOLs, it avoids the use of solvents to study such fundamentally important properties. Besides, SOLs protect the triplet emitters and excited state processes involving triplet states from quenchers and make the analysis possible under ambient conditions.Our effort in this direction was focused on tuning the ground and excited state properties by transforming conventional organic molecules to SOLs and further value addition by preparing the hybrid SOLs. We developed a series of hybrid SOLs, exploring room-temperature phosphorescence, thermally activated delayed fluorescence, charge or energy transfer between donor and acceptor SOLs, selective explosive sensing, etc. A slight variation in the chemical structure or optoelectronic properties of the individual components imparted exciting optical features for the hybrid SOLs. It includes nonemissive charge transfer, tunable emission exciplex, room temperature phosphorescence, and thermally activated delayed fluorescence SOLs. The liquid matrix of donor SOLs accommodated varying amounts of acceptor SOLs to tune the ground and excited state features. In all examples of donor-acceptor-based hybrid SOLs, even a low amount of acceptor, such as a donor-acceptor ratio of 1000:1, can cause pronounced optical properties. Hence, the evaluation of the optical properties of SOLs, especially, in the absence of solvents is so special that it avoids the interference of solvent molecules. Still, the major drawback of SOLs remains unsolved until we report polymerizable SOLs. Although a large variety of SOLs have been reported in the literature, the long-lasting problem of surface stickiness of SOLs was resolved by polymerizable SOLs. It enabled the development of flexible, foldable, and stretchable large-area luminescent films suitable for lighting and display devices. In this Account, we summarize our work on SOLs, hybrid SOLs, polymerizable SOLs, and the application of SOLs in selective sensing of explosives. Finally, an outlook on the feasibility of luminescent polymerizable SOLs in futuristic applications is provided.
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Affiliation(s)
- Vivek Chandrakant Wakchaure
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Goudappagouda Channareddy
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sukumaran Santhosh Babu
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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3
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Corbet CHWA, van den Bersselaar BWL, de Waal BFM, Reynaerts R, Mali KS, De Feyter S, Jonas AM, Meijer EW, Vantomme G. Self-Assembly of Discrete Oligomers of Naphthalenediimides in Bulk and on Surfaces. Chemistry 2024; 30:e202303107. [PMID: 38009432 DOI: 10.1002/chem.202303107] [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: 09/25/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 11/28/2023]
Abstract
Here, we report on the synthesis of discrete oligomers of alkyl-bridged naphthalenediimides (NDIs) and study their molecular nanostructures both in bulk, in solution, and at the liquid-solid interface. Via an iterative synthesis method, multiple NDI cores were bridged with short and saturated alkyl-diamines (C3 and C12 ) or long and unsaturated alkyl-diamines (u2 C33 to u8 C100 ) at their imide termini. The strong intermolecular interaction between the NDI cores was observed by probing their photophysical properties in solution. In bulk, the discrete NDI oligomers preferentially ordered in lamellar morphologies, irrespective of whether a saturated or unsaturated spacer was employed. Moreover, both the molecular architecture as well as the crystallization conditions play a significant role in the nanoscale ordering. The long unsaturated alkyl chains lead preferably to folded-chain conformations while their saturated analogues form stretched arrangements. At the solution-solid interface, well-defined lamellar regions were observed. These results show that precision in chemical structure alone is not sufficient to reach well-defined structures of discrete oligomers, but that it must be combined with precision in processing conditions.
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Affiliation(s)
- Christiaan H W A Corbet
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Bart W L van den Bersselaar
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Bas F M de Waal
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Robby Reynaerts
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Kunal S Mali
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain-UCLouvain, Ottignies-Louvain-la-Neuve, Louvain-la-Neuve, B-1348, Belgium
| | - E W Meijer
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- School of Chemistry and RNA Institute, University of New South Wales, Sydney, Australia
| | - Ghislaine Vantomme
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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4
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Benavides PA, Gordillo MA, Thibodeaux E, Yadav A, Johnson E, Sachdeva R, Saha S. Rare Guest-Induced Electrical Conductivity of Zn-Porphyrin Metallacage Inclusion Complexes Featuring π-Donor/Acceptor/Donor Stacks. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1234-1242. [PMID: 38108279 DOI: 10.1021/acsami.3c15959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Charge-transfer (CT) interactions between co-facially aligned π-donor/acceptor (π-D/A) arrays engender unique optical and electronic properties that could benefit (supra)molecular electronics and energy technologies. Herein, we demonstrate that a tetragonal prismatic metal-organic cage (MOC18+) having two parallel π-donor tetrakis(4-carboxyphenyl)-Zn-porphyrin (ZnTCPP) faces selectively intercalate planar π-acceptor guests, such as hexaazatriphenylene hexacarbonitrile (HATHCN), hexacyanotriphenylene (HCTP), and napthanelediimide (NDI) derivatives, forming 1:1 πA@MOC18+ inclusion complexes featuring supramolecular π-D/A/D triads. The π-acidity of intercalated π-acceptors (HATHCN ≫ HCTP ≈ NDIs) dictated the nature and strength of their interactions with the ZnTCPP faces, which in turn influenced the binding affinities (Ka) and optical and electronic properties of corresponding πA@MOC18+ inclusion complexes. Owing to its strongest CT interaction with ZnTCPP faces, the most π-acidic HATHCN guest enjoyed the largest Ka (5 × 106 M-1), competitively displaced weaker π-acceptors from the MOC18+ cavity, and generated the highest electrical conductivity (2.1 × 10-6 S/m) among the πA@MOC18+ inclusion complexes. This work demonstrates a unique through-space charge transport capability of πA@MOC18+ inclusion complexes featuring supramolecular π-D/A/D triads, which generated tunable electrical conductivity, which is a rare but much coveted electronic property of such supramolecular assemblies that could further expand their utility in future technologies.
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Affiliation(s)
- Paola A Benavides
- Department of Chemistry, Clemson University, 211 S. Palmetto Blvd., Clemson, South Carolina 29634, United States
| | - Monica A Gordillo
- Department of Chemistry, Clemson University, 211 S. Palmetto Blvd., Clemson, South Carolina 29634, United States
| | - Evan Thibodeaux
- Department of Chemistry, Clemson University, 211 S. Palmetto Blvd., Clemson, South Carolina 29634, United States
| | - Ashok Yadav
- Department of Chemistry, Clemson University, 211 S. Palmetto Blvd., Clemson, South Carolina 29634, United States
| | - Evan Johnson
- Department of Chemistry, Clemson University, 211 S. Palmetto Blvd., Clemson, South Carolina 29634, United States
| | - Rakesh Sachdeva
- Department of Chemistry, Clemson University, 211 S. Palmetto Blvd., Clemson, South Carolina 29634, United States
| | - Sourav Saha
- Department of Chemistry, Clemson University, 211 S. Palmetto Blvd., Clemson, South Carolina 29634, United States
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5
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Pahan S, Dey S, George G, Mahapatra SP, Puneeth Kumar DRGKR, Gopi HN. Design of Chiral β-Double Helices from γ-Peptide Foldamers. Angew Chem Int Ed Engl 2024; 63:e202316309. [PMID: 38009917 DOI: 10.1002/anie.202316309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/24/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023]
Abstract
Chirality is ubiquitous in nature, and homochirality is manifested in many biomolecules. Although β-double helices are rare in peptides and proteins, they consist of alternating L- and D-amino acids. No peptide double helices with homochiral amino acids have been observed. Here, we report chiral β-double helices constructed from γ-peptides consisting of alternating achiral (E)-α,β-unsaturated 4,4-dimethyl γ-amino acids and chiral (E)-α,β-unsaturated γ-amino acids in both single crystals and in solution. The two independent strands of the same peptide intertwine to form a β-double helix structure, and it is stabilized by inter-strand hydrogen bonds. The peptides with chiral (E)-α,β-unsaturated γ-amino acids derived from α-L-amino acids adopt a (P)-β-double helix, whereas peptides consisting of (E)-α,β-unsaturated γ-amino acids derived from α-D-amino acids adopt an (M)-β-double helix conformation. The circular dichroism (CD) signature of the (P) and (M)-β-double helices and the stability of these peptides at higher temperatures were examined. Furthermore, ion transport studies suggested that these peptides transport ions across membranes. Even though the structural analogy suggests that these new β-double helices are structurally different from those of the α-peptide β-double helices, they retain ion transport activity. The results reported here may open new avenues in the design of functional foldamers.
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Affiliation(s)
- Saikat Pahan
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| | - Sanjit Dey
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| | - Gijo George
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| | - Souvik Panda Mahapatra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| | - DRGKoppalu R Puneeth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| | - Hosahudya N Gopi
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
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6
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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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7
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Barman R, Mukherjee A, Nag A, Rajdev P, Ghosh S. Hierarchical assembly of foldable polymers and applications in organic optoelectronics and antibacterial or antiviral materials. Chem Commun (Camb) 2023; 59:13951-13961. [PMID: 37937399 DOI: 10.1039/d3cc04855a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Aggregation of amphiphilic polymers in block-selective solvents produces different nanostructures, which have been studied extensively for wide-ranging applications. Nevertheless, such immiscibility-driven aggregation does not endow them with the desired structural precision, predictability or surface functional group exposure, which significantly impact their functional applications. More recently, biomimetic folded structures of synthetic macromolecules (mostly oligomers) have come to the fore, but such studies have been limited to probe the secondary structures. In this article, we have collated hierarchical structures of foldamers, especially highlighting our recent contribution to the field of chain-folding regulated assembly of segmented polyurethanes (PUs) and their functional applications. A series of such PUs have been discussed, which contain a segmented hydrocarbon backbone and alternately placed pendant solvophilic groups. In either water or highly non-polar solvents (TCE, MCH), depending on the nature of the pendant group, they exhibit folded structures stabilized by intra-chain H-bonding. Hierarchical assembly of such folded chains by inter-chain H-bonding and/or π-stacking leads to the formation of well-defined nanostructures with functional applications ranging from organic optoelectronics to biomaterials. For example, a segmented PU with appended naphthalene-diimide (NDI) chromophores showed a pleated structure in MCH, which helped in organization of the NDI chromophores within π-stacking distance. Such folded polymer chains eventually produced nanotubular structures with excellent electron mobility. They also showed efficient intercalation of the pyrene (Py) donor by NDI-Py charge-transfer interaction and in this case the mixed nanotubular structure exhibited prominent room-temperature ferroelectricity. On the other hand, having cationic functionalities as the pendant groups such chain-folding regulated assembly produced unilamellar polymersomes with excellent antibacterial activity with very low minimum inhibitory concentrations (<10 μg mL-1). Replacing the pendant amine functionality with sulphate groups made these polyurethanes highly potent antiviral materials. In the absence of the alternating connectivity of the solvophobic and solvophilic segments or rigid hydrocarbon backbone, such folding propensity is destroyed, leading to structural collapse. While significant efforts have been made in correlating primary structures of wide-ranging polymers with their functional applications, this article demonstrates the direct correlation between the secondary structures of polymers and their functional properties.
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Affiliation(s)
- Ranajit Barman
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Anurag Mukherjee
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Atish Nag
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Priya Rajdev
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, 700032, India.
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8
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Liu S, Ma J, Xue EY, Wang S, Zheng Y, Ng DKP, Wang A, Zheng N. Polymeric Phthalocyanine-Based Nanosensitizers for Enhanced Photodynamic and Sonodynamic Therapies. Adv Healthc Mater 2023; 12:e2300481. [PMID: 37019442 DOI: 10.1002/adhm.202300481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/27/2023] [Indexed: 04/07/2023]
Abstract
Photodynamic therapy and sonodynamic therapy are two highly promising modalities for cancer treatment. The latter holds an additional advantage in deep-tumor therapy owing to the deep penetration of the ultrasonic radiation. The therapeutic efficacy depends highly on the photo/ultrasound-responsive properties of the sensitizers as well as their tumor-localization property and pharmacokinetics. A novel nanosensitizer system based on a polymeric phthalocyanine (pPC-TK) is reported herein in which the phthalocyanine units are connected with cleavable thioketal linkers. Such polymer could self-assemble in water forming nanoparticles with a hydrodynamic diameter of 48 nm. The degradable and flexible thioketal linkers could effectively inhibit the π-π stacking of the phthalocyanine units, rendering the resulting nanoparticles an efficient generator of reactive oxygen species upon light or ultrasonic irradiation. The nanosensitizer could be internalized into cancer cells readily, inducing cell death by efficient photodynamic and sonodynamic effects. The potency is significantly higher than that of the monomeric phthalocyanine (PC-4COOH). The nanosensitizer could also effectively inhibit the growth of tumor in liver tumor-bearing mice by these two therapies without causing noticeable side effects. More importantly, it could also retard the growth of a deep-located orthotopic liver tumor in vivo by sonodynamic therapy.
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Affiliation(s)
- Shuxin Liu
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jinjuan Ma
- Department of Comparative Medicine Laboratory Animal Center, Dalian Medical University, Dalian, 116000, China
| | - Evelyn Y Xue
- Department of Chemistry, The Chinese University of Hong Kong, Shatin N.T., Hong Kong, 999077, China
| | - Shaolei Wang
- Department of Radiology Intervention, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, 110801, China
| | - Yubin Zheng
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Dalian University of Technology Corporation of Changshu Research Institution, Suzhou, 215500, China
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin N.T., Hong Kong, 999077, China
| | - Aiguo Wang
- Department of Comparative Medicine Laboratory Animal Center, Dalian Medical University, Dalian, 116000, China
| | - Nan Zheng
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Dalian University of Technology Corporation of Changshu Research Institution, Suzhou, 215500, China
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9
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Yang Y, Zou X, Sun Y, Chen F, Zhao J, Gou S. Naphthalene Diimide-Functionalized Half-Sandwich Ru(II) Complexes as Mitochondria-Targeted Anticancer and Antimetastatic Agents. Inorg Chem 2023. [PMID: 37267472 DOI: 10.1021/acs.inorgchem.3c01125] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, four naphthalene diimide (NDI)-functionalized half-sandwich Ru(II) complexes Ru1-Ru4 bearing the general formula [(η6-arene)RuII(N^N)Cl]PF6, where arene = benzene (bn), p-cymene (p-cym), 1,3,5-trimethylbenzene (tmb), and hexamethylbenzene (hmb), have been synthesized and characterized. By introducing the NDI unit into the N,N-chelating ligand of these half-sandwich complexes, the poor luminescent half-sandwich complexes are endowed with excellent emission performance. Besides, modification on the arene ligand of arene-Ru(II) complexes can influence the electron density of the metal center, resulting in great changes in the kinetic properties, catalytic activities in the oxidative conversion of NADH to NAD+, and biological activities of these compounds. Particularly, Ru4 exhibits the highest reactivity and the strongest inhibitory activity against the growth of three tested cancer cell lines. Further study revealed that Ru4 can enter cells quickly in an energy-dependent manner and preferentially accumulate in the mitochondria of MDA-MB-231 cells, inducing cell apoptosis via reactive oxygen species overproduction and mitochondrial dysfunction. Significantly, Ru4 can effectively inhibit the cell migration and invasion. Overall, the complexation with NDI and modification on the arene ligand endowed the half-sandwich Ru(II) complexes with improved spectroscopic properties and anticancer activities, highlighting their potential applications for cancer treatment.
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Affiliation(s)
- Yuliang Yang
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Xiaofeng Zou
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yanyan Sun
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Feihong Chen
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
- Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189, China
| | - Jian Zhao
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
- Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189, China
| | - Shaohua Gou
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
- Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189, China
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10
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Pérez de Carvasal K, Nicollet L, Smietana M, Morvan F. Stabilization of DNA Duplexes and Hairpins by Charge-Transfer Interactions Using DAN:NDI Pairs. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:7418-7425. [PMID: 37196178 DOI: 10.1021/acs.langmuir.3c00619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Electron-rich 1,5-dialkoxynaphthalene (DAN) and electron-deficient 1,8,4,5-naphthalenetetracarboxylic diimide (NDI) are known to interact through the formation of charge-transfer complexes. The introduction of DAN and NDI into various DNA duplexes and hairpins was investigated by ultraviolet (UV) melting curve analysis. The positioning of the DAN:NDI pair was found to strongly influence the stability of DNA duplex and hairpins. In particular, while the introduction of one DAN/NDI pair in front of each other in the center of a DNA duplex led to a decrease of the thermal stability (ΔTm - 6 °C), the addition of a second pair restored or even increased the stability. In contrast, the introduction of DAN:NDI pairs at the end of a duplex always induced a strong stabilization (ΔTm up to +20 °C). Finally, a DAN:NDI pair positioned in the loop of a hairpin induced a stronger stabilization than a T4 loop (ΔTm + 10 °C). Based on charge-transfer interactions, the strong stabilizations observed allow the preparation of highly stabilized DNA nanostructures opening the way to numerous applications in nanotechnology.
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Affiliation(s)
- Kévan Pérez de Carvasal
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, 34293 Montpellier, France
| | - Laura Nicollet
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, 34293 Montpellier, France
| | - Michael Smietana
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, 34293 Montpellier, France
| | - François Morvan
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, 34293 Montpellier, France
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11
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Rathore R, Abdelwahed SH. Design and Synthesis of Cofacially-Arrayed Polyfluorene Wires for Electron and Energy Transfer Studies. Molecules 2023; 28:molecules28093717. [PMID: 37175127 PMCID: PMC10180040 DOI: 10.3390/molecules28093717] [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: 03/16/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
A study of cofacially arrayed π-systems is of particular importance for the design of functional materials for efficient long-range intra-chain charge transfer through the bulk semiconducting materials in the layers of photovoltaic devices. The effect of π-stacking between a pair of aromatic rings has been mainly studied in the form of cyclophanes, where aromatic rings are forced into a sandwich-like geometry, which extensively deforms the aromatic rings from planarity. The synthetic difficulties associated with the preparation of cyclophane-like structures has prevented the synthesis of many examples of their multi-layered analogues. Moreover, the few available multi-layered cyclophanes are not readily amenable to the structural modification required for the construction of D-spacer-A triads needed to explore mechanisms of electron and energy transfer. In this review, we recount how a detailed experimental and computational analysis of 1,3-diarylalkanes led to the design of a new class of cofacially arrayed polyfluorenes that retain their π-stacked structure. Thus, efficient synthetic strategies have been established for the ready preparation of monodisperse polyfluorenes with up to six π-stacked fluorenes, which afford ready access to D-spacer-A triads by linking donor and acceptor groups to the polyfluorene spacers via single methylenes. Detailed 1H NMR spectroscopy, X-ray crystallography, electrochemistry, and He(I) photoelectron spectroscopy of F2-F6 have confirmed the rigid cofacial stacking of multiple fluorenes in F2-F6, despite the presence of rotatable C-C bonds. These polyfluorenes (F2-F6) form stable cation radicals in which a single hole is delocalized amongst the stacked fluorenes, as judged by the presence of intense charge-resonance transition in their optical spectra. Interestingly, these studies also discern that delocalization of a single cationic charge could occur over multiple fluorene rings in F2-F6, while the exciton is likely localized only onto two fluorenes in F2-F6. Facile synthesis of the D-spacer-A triads allowed us to demonstrate that efficient triplet energy transfer can occur through π-stacked polyfluorenes; the mechanism of energy transfer crosses over from tunneling to hopping with increasing number of fluorenes in the polyfluorene spacer. We suggest that the development of rigidly held π-stacked polyfluorenes, described herein, with well-defined redox and optoelectronic properties provides an ideal scaffold for the study of electron and energy transfer in D-spacer-A triads, where the Fn spacers serve as models for cofacially stacked π-systems.
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Affiliation(s)
- Rajendra Rathore
- Department of Chemistry, Marquette University, Milwaukee, WI 53233, USA
| | - Sameh H Abdelwahed
- Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, USA
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12
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de Carvasal KP, Vergoten G, Vasseur JJ, Smietana M, Morvan F. Supramolecular Recognition of Phosphodiester-Based Donor and Acceptor Oligomers Forming Gels in Water. Biomacromolecules 2023; 24:756-765. [PMID: 36724436 DOI: 10.1021/acs.biomac.2c01203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Inspired by automated DNA synthesis, electron-rich dialkoxynaphthalene (DAN) donor and electron-deficient naphthalene-tetracarboxylic diimide (NDI) acceptor phosphodiester-linked homohexamers were synthesized by the phosphoramidite method. Two types of hexamers were prepared, one with only one phosphodiester between the aromatics (i.e., DAN or NDI) and a second with two phosphodiesters around a propanediol between the aromatics, leading to the latter more flexible and more hydrophilic hexamers. The folding properties of these homohexamers alone or mixed together, in water only, were studied by UV-visible absorption spectroscopy and atomic force microscopy (AFM). AFM imaging revealed that a 1:1 mixture of hexaDAN and hexaNDI formed fibers by charge transfer donor-acceptor recognition leading to a hydrogel after drying. The organization of the resulting structures is strongly dependent on the nature of the complementary partner, leading to the formation of mono- or multilayer hydrogel networks with different compactness.
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Affiliation(s)
- Kévan Pérez de Carvasal
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, Montpellier 34293, France
| | - Gérard Vergoten
- Université de Lille, Inserm, INFINITE - U1286, Institut de Chimie Pharmaceutique Albert Lespagnol (ICPAL), Faculté de Pharmacie, 3 rue du Professeur Laguesse, Lille 59006, France
| | - Jean-Jacques Vasseur
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, Montpellier 34293, France
| | - Michael Smietana
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, Montpellier 34293, France
| | - François Morvan
- Université de Montpellier, CNRS, ENSCM, Institut des Biomolécules Max Mousseron, Montpellier 34293, France
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13
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Noll N, Groß T, Shoyama K, Beuerle F, Würthner F. Folding-Induced Promotion of Proton-Coupled Electron Transfers via Proximal Base for Light-Driven Water Oxidation. Angew Chem Int Ed Engl 2023; 62:e202217745. [PMID: 36511298 PMCID: PMC10107485 DOI: 10.1002/anie.202217745] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 12/14/2022]
Abstract
Proton-coupled electron-transfer (PCET) processes play a key role in biocatalytic energy conversion and storage, for example, photosynthesis or nitrogen fixation. Here, we report a series of bipyridine-containing di- to tetranuclear Ru(bda) macrocycles 2 C-4 C (bda: 2,2'-bipyridine-6,6'-dicarboxylate) to promote O-O bond formation. In photocatalytic water oxidation under neutral conditions, all complexes 2 C-4 C prevail in a folded conformation that support the water nucleophilic attack (WNA) pathway with remarkable turnover frequencies of up to 15.5 s-1 per Ru unit respectively. Single-crystal X-ray analysis revealed an increased tendency for intramolecular π-π stacking and preorganization of the proximal bases close to the active centers for the larger macrocycles. H/D kinetic isotope effect studies and electrochemical data demonstrate the key role of the proximal bipyridines as proton acceptors in lowering the activation barrier for the crucial nucleophilic attack of H2 O in the WNA mechanism.
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Affiliation(s)
- Niklas Noll
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Tobias Groß
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Kazutaka Shoyama
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Florian Beuerle
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany.,Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
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14
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Using supramolecular machinery to engineer directional charge propagation in photoelectrochemical devices. Nat Chem 2023; 15:213-221. [PMID: 36302868 DOI: 10.1038/s41557-022-01068-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 09/16/2022] [Indexed: 02/07/2023]
Abstract
Molecular photoelectrochemical devices are hampered by electron-hole recombination after photoinduced electron transfer, causing losses in power conversion efficiency. Inspired by natural photosynthesis, we demonstrate the use of supramolecular machinery as a strategy to inhibit recombination through an organization of molecular components that enables unbinding of the final electron acceptor upon reduction. We show that preorganization of a macrocyclic electron acceptor to a dye yields a pseudorotaxane that undergoes a fast (completed within ~50 ps) 'ring-launching' event upon electron transfer from the dye to the macrocycle, releasing the anionic macrocycle and thus reducing charge recombination. Implementing this system into p-type dye-sensitized solar cells yielded a 16-fold and 5-fold increase in power conversion efficiency compared to devices based on the two control dyes that are unable to facilitate pseudorotaxane formation. The active repulsion of the anionic macrocycle with concomitant reformation of a neutral pseudorotaxane complex circumvents recombination at both the semiconductor-electrolyte and semiconductor-dye interfaces, enabling a threefold enhancement in hole lifetime.
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15
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Molecular Tetris by sequence-specific stacking of hydrogen bonding molecular clips. Commun Chem 2022; 5:180. [PMID: 36697760 PMCID: PMC9814962 DOI: 10.1038/s42004-022-00802-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/20/2022] [Indexed: 12/29/2022] Open
Abstract
A face-to-face stacking of aromatic rings is an effective non-covalent strategy to build functional architectures, as elegantly exemplified with protein folding and polynucleotide assembly. However, weak, non-directional, and context-sensitive van der Waals forces pose a significant challenge if one wishes to construct well-organized π-stacks outside the confines of the biological matrix. To meet this design challenge, we have devised a rigid polycyclic template to create a non-collapsible void between two parallel oriented π-faces. In solution, these shape-persistent aromatic clips self-dimerize to form quadruple π-stacks, the thermodynamic stability of which is enhanced by self-complementary N-H···N hydrogen bonds, and finely regulated by the regioisomerism of the π-canopy unit. With assistance from sufficient electrostatic polarization of the π-surface and bifurcated hydrogen bonds, a small polyheterocyclic guest can effectively compete against the self-dimerization of the host to afford a triple π-stack inclusion complex. A combination of solution spectroscopic, X-ray crystallographic, and computational studies aided a detailed understanding of this cooperative vs competitive process to afford layered aromatics with extraordinary structural regularity and fidelity.
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16
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Wu P, Pietropaolo A, Fortino M, Shimoda S, Maeda K, Nishimura T, Bando M, Naga N, Nakano T. Non‐uniform Self‐folding of Helical Poly(fluorenevinylene) Derivatives in the Solid State Leading to Amplified Circular Dichroism and Circularly Polarized Light Emission. Angew Chem Int Ed Engl 2022; 61:e202210556. [DOI: 10.1002/anie.202210556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Pengfei Wu
- Institute for Catalysis (ICAT) Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
- Graduate School of Chemical Sciences and Engineering Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
| | - Adriana Pietropaolo
- Dipartimento di Scienze della Salute Università di Catanzaro Catanzaro Italy
| | - Mariagrazia Fortino
- Dipartimento di Scienze della Salute Università di Catanzaro Catanzaro Italy
| | - Shuhei Shimoda
- Institute for Catalysis (ICAT) Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology and WPI Nano Life Science Institute (WPI-NanoLSI) Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Tatsuya Nishimura
- Graduate School of Natural Science and Technology and WPI Nano Life Science Institute (WPI-NanoLSI) Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Masayoshi Bando
- Institute for Catalysis (ICAT) Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
- Graduate School of Chemical Sciences and Engineering Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
| | - Naofumi Naga
- Department of Applied Chemistry College of Engineering and Graduate School of Engineering and Science Shibaura Institute of Technology 3-7-5 Toyosu, Koto-ku Tokyo 135-8548 Japan
| | - Tamaki Nakano
- Institute for Catalysis (ICAT) Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
- Graduate School of Chemical Sciences and Engineering Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
- Integrated Research Consortium on Chemical Sciences (IRCCS) Institute for Catalysis Hokkaido University N21W10, Kita-ku Sapporo 001-0021 Japan
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17
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Zhou C, Wang Y, Muthukumar M, Zhang R, Zhao J, Jia D. Extraordinary Temperature Dependence of Hierarchically Assembled Macromolecular Structures with Memory. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chao Zhou
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yubin Wang
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
- Wanhua Chemical Group Co., Ltd., Yantai 264006, China
| | - Murugappan Muthukumar
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, United States
| | - Ruoyu Zhang
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Jiang Zhao
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Di Jia
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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18
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Sobiech TA, Zhong Y, Gong B. Cavity-containing aromatic oligoamide foldamers and macrocycles: progress and future perspectives. Org Biomol Chem 2022; 20:6962-6978. [PMID: 36040143 DOI: 10.1039/d2ob01467j] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a major class of foldamers, aromatic oligoamide foldamers have attracted intense interest. The rigidity of aromatic residues and amide linkages allows the development of foldamers with readily predictable, stable conformations. Aromatic oligoamide foldamers having backbones fully constrained by intramolecular hydrogen bonds have attracted wide attention. Depending on their lengths, such foldamers adopt crescent or helical conformations with highly negative inner cavities. Cyclizing the backbone of the aromatic oligoamides affords the corresponding macrocycles which are characterised by persistent shapes and non-deformable inner cavities. With their defined, inner cavities, such aromatic oligoamide foldamers and macrocycles have served as hosts for cationic and polar guests, and as transmembrane channels for transporting ions and molecules. Recent synthetic progress resulted in the construction of multi-turn hollow helices that offer three-dimensional inner pores with adjustable depth. Reducing the number of backbone-constraining hydrogen bonds leads to oligoamides which, with their partially constrained backbones, undergo either solvent- or guest-dependent folding. One class of such aromatic olgioamide foldamders, which offer multiple backbone amide NH groups as hydrogen-bond donors, are designed to bind anions with adjustable affinities.
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Affiliation(s)
- Thomas A Sobiech
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, NY 14260, USA.
| | - Yulong Zhong
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, NY 14260, USA.
| | - Bing Gong
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, NY 14260, USA.
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19
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Algar JL, Findlay JA, Preston D. Roles of Metal Ions in Foldamers and Other Conformationally Flexible Supramolecular Systems. ACS ORGANIC & INORGANIC AU 2022; 2:464-476. [PMID: 36855532 PMCID: PMC9955367 DOI: 10.1021/acsorginorgau.2c00021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 11/28/2022]
Abstract
Conformational control is a key prerequisite for much molecular function. As chemists seek to create complex molecules that have applications beyond the academic laboratory, correct spatial positioning is critical. This is particularly true of flexible systems. Conformationally flexible molecules show potential because they resemble in many cases naturally occurring analogues such as the secondary structures found in proteins and peptides such as α-helices and β-sheets. One of the ways in which conformation can be controlled in these molecules is through interaction with or coordination to metal ions. This review explores how secondary structure (i.e., controlled local conformation) in foldamers and other conformationally flexible systems can be enforced or modified through coordination to metal ions. We hope to provide examples that illustrate the power of metal ions to influence this structure toward multiple different outcomes.
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20
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Wu P, Pietropaolo A, Fortino M, Shimoda S, Maeda K, Nishimura T, Bando M, Naga N, Nakano T. Non‐uniform Self‐folding of Helical Poly(fluorenevinylene) Derivatives in the Solid State Leading to Amplified Circular Dichroism and Circularly Polarized Light Emission. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Pengfei Wu
- Hokkaido University: Hokkaido Daigaku Institute for Catalysis JAPAN
| | - Adriana Pietropaolo
- University of Catanzaro: Universita degli Studi Magna Graecia di Catanzaro Dipartimento di Scienze della Salute ITALY
| | - Mariagrazia Fortino
- University of Catanzaro: Universita degli Studi Magna Graecia di Catanzaro Dipartimento di Scienze della Salute ITALY
| | | | - Katsuhiro Maeda
- Kanazawa University: Kanazawa Daigaku Graduate School of Natural Science and Technology and WPI Nano Life Science Institute JAPAN
| | - Tatsuya Nishimura
- Kanazawa University: Kanazawa Daigaku Graduate School of Natural Science and Technology and WPI Nano Life Science Institute JAPAN
| | - Masayoshi Bando
- Hokkaido University: Hokkaido Daigaku Institute for Catalysis JAPAN
| | - Naofumi Naga
- Shibaura Institute of Technology: Shibaura Kogyo Daigaku Department of Applied Chemistry JAPAN
| | - Tamaki Nakano
- Hokkaido University Institute for Catalysis N21 W10, Kita-ku 001-0021 Sapporo JAPAN
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21
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Ma J, Han N, Yu H, Li J, Shi J, Wang S, Zhang H, Wang M. Multi-Decker Emissive Supramolecular Architectures Based on Shape-Complementary Ligands Pair. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202167. [PMID: 35638477 DOI: 10.1002/smll.202202167] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/09/2022] [Indexed: 06/15/2023]
Abstract
Dye aggregates have attracted a great deal of attention due to their widespread applications in organic light-emitting devices, light-harvesting systems, etc. However, the strategies to precisely control chromophores with specific spatial arrangements still remain a great challenge. In this work, a series of double- and triple-decker supramolecular complexes are successfully constructed by coordination-driven self-assembly of carefully designed shape-complementary ligands, one claw-like tetraphenylethylene (TPE)-based host ligand and three tetratopic or ditopic guest ligands. The spatial configurations of these assemblies (one double-decker and three "S-shaped" or "X-shaped" triple-decker structures) depend on the angles of these TPE-derived ligands. Notably, the three triple-decker structures are geometric isomers. Furthermore, photophysical studies show that these complexes exhibit different ratios of radiative (kr ) and non-radiative (knr ) rate constant due to the different spatial arrangements of TPE moieties. This study provides not only a unique strategy for the construction of multi-stacks with specific spatial arrangement, but also a promising platform for investigating the aggregation behavior of fluorescent chromophores.
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Affiliation(s)
- Jianjun Ma
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Ningxu Han
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Hao Yu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Jiaqi Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Junjuan Shi
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Shaozhi Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Houyu Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Ming Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
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22
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Mukherjee A, Barman S, Ghosh A, Datta A, Datta A, Ghosh S. A Hierarchical (Macro)molecular Assembly Assisted by Donor-Acceptor Charge-Transfer Interactions Exhibiting Room-Temperature Ferroelectricity. Angew Chem Int Ed Engl 2022; 61:e202203817. [PMID: 35353441 DOI: 10.1002/anie.202203817] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Indexed: 12/12/2022]
Abstract
This communication reveals co-assembly of an electron-deficient naphthalene-diimide (NDI)-appended polyurethane (P1) and electron-rich pyrene (Py), forming an organogel with prominent room-temperature ferroelectricity. In a non-polar medium, intra-chain hydrogen-bonding among the urethane groups of P1 produces a folded structure with an array of the NDIs in the periphery, which intercalate Py by charge-transfer (CT)-interaction. Such CT-complexation enables slow crystallization of the peripheral hydrocarbons, causing gelation with nanotubular morphology, in which the wall consists of the alternating NDI-Py stack. Such D-A assembly exhibits ferroelectricity (saturation polarization Ps ≈0.8 μC cm-2 and coercive field Ec ≈8 kV cm-1 at 500 V and 10 Hz frequency) with Curie temperature (Tc ) of ≈350 K, which can be related to the disassembly of the CT-complex. In the absence of Py, P1 forms spherical aggregates, showing dielectric behaviour.
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Affiliation(s)
- Anurag Mukherjee
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Shubhankar Barman
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Anupam Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Ayan Datta
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Anuja Datta
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
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23
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Liu B, Vonhausen Y, Schulz A, Höbartner C, Würthner F. Peptide Backbone Directed Self‐Assembly of Merocyanine Oligomers into Duplex Structures. Angew Chem Int Ed Engl 2022; 61:e202200120. [PMID: 35194914 PMCID: PMC9401582 DOI: 10.1002/anie.202200120] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Indexed: 11/10/2022]
Abstract
The pseudopeptide backbone provided by N‐(2‐aminoethyl)‐glycine oligomers with attached nucleobases has been widely utilized in peptide nucleic acids (PNAs) as DNA mimics. Here we demonstrate the suitability of this backbone for the formation of structurally defined dye stacks. Toward this goal a series of peptide merocyanine (PMC) dye oligomers connected to a N‐(2‐aminoethyl)‐glycine backbone were prepared through peptide synthesis. Our concentration‐, temperature‐ and solvent‐dependent UV/Vis absorption studies show that under the control of dipole–dipole interactions, smaller‐sized oligomers consisting of one, two or three dyes self‐assemble into defined duplex structures containing two up to six chromophores. In contrast, upon further extension of the oligomer, the chosen peptide backbone cannot direct the formation of a defined duplex architecture anymore due to intramolecular aggregation between the dyes. For all aggregate species a moderate aggregation‐induced emission enhancement is observed.
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Affiliation(s)
- Bin Liu
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Yvonne Vonhausen
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexander Schulz
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Claudia Höbartner
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
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24
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Tian J, Jiang YX, Yu XQ, Yu SS. Rapid chiral assay of amino compounds using diethyl squarate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120871. [PMID: 35151169 DOI: 10.1016/j.saa.2022.120871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
The versatility and importance of chiral compounds make it urgent to develop fast and efficient methods to detect the absolute configuration, enantiomeric excess(ee), and concentration of chiral compounds. In this study, we demonstrate that commercially available diethyl squarate can rapidly react with various types of chiral amino compounds and exhibit characteristic ultraviolet (UV) and circular dichroism (CD) signals. The UV and CD signals can determine the total concentration of the two enantiomers and ee value of the sample, respectively. The probe showed a broad substrate scope, applicable to 39 tested chiral amino compounds, including chiral amino acids, amino alcohols, and amines. Additionally, the probe accurately detected 10 samples of phenylalanine, phenylglycinol, and phenethylamine with the error range less than 8%, demonstrating the practicability of this method.
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Affiliation(s)
- Jun Tian
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China
| | - Yi-Xuan Jiang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China.
| | - Shan-Shan Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China.
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25
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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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26
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Mukherjee A, Barman S, Ghosh A, Datta A, Datta A, Ghosh S. A Hierarchical (Macro)molecular Assembly Assisted by Donor‐Acceptor Charge‐Transfer Interactions Exhibiting Room‐Temperature Ferroelectricity. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203817] [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)
| | | | - Anupam Ghosh
- Indian Association for the Cultivation of Science SCS INDIA
| | - Ayan Datta
- Indian Association for the Cultivation of Science SCS INDIA
| | - Anuja Datta
- Indian Association for the Cultivation of Science SAIS INDIA
| | - Suhrit Ghosh
- Indian Association for the Cultivation of Science Polymer Science Unit 2A& B Raja S. C. Mullick Rd.Jadavur 700032 Kolkata INDIA
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27
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Liu B, Vonhausen Y, Schulz A, Höbartner C, Würthner F. Peptide Backbone Directed Self‐Assembly of Merocyanine Oligomers into Duplex Structures. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200120] [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)
- Bin Liu
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Yvonne Vonhausen
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexander Schulz
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Claudia Höbartner
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
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28
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Abe R, Tsuchido Y, Ide T, Koizumi TA, Osakada K. Digold(I) Thianthrenyl Complexes. Effect of Diphosphine Ligands on Molecular Structures in the Solid State and in Solution. ACS OMEGA 2022; 7:9594-9601. [PMID: 35350371 PMCID: PMC8945089 DOI: 10.1021/acsomega.1c06938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/14/2022] [Indexed: 05/28/2023]
Abstract
A series of digold complexes possessing two thianthrenyl ligands, Au2(Thi)2(Ph2P(CH2) n PPh2) (Thi: 1-thianthrenyl; 1: n = 1, 2: n = 2, 3: n = 3, 4: n = 4), were prepared and characterized by crystallographic and spectroscopic measurements. X-ray crystallography of complexes 1 and 3 revealed U-shaped structures with short Au-Au distances [3.2171(3) Å and 3.0735(2) Å]. Complex 2 and three of the four structure-determined molecules of complex 4 showed structures without Au-Au contacts. UV-vis spectroscopic measurements of 1-4 and TD-DFT calculations of the two conformers of 1 revealed that complexes 1 and 3 in the solution phase contained conformers with Au(I)-Au(I) interactions in a much higher proportion than complexes 2 and 4. As a result, complexes with diphosphine ligands containing an odd number of methylene groups preferred structures with Au-Au interactions in the solid state and in solution. Oxidation of 1 with 2 equiv of PhICl2 yielded a mixture of monomeric and dimeric thianthrenes and its dimer via ligand elimination and C-C coupling, respectively.
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Affiliation(s)
- Ryota Abe
- Laboratory
for Chemistry and Life Science, Institute
of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Yoshitaka Tsuchido
- Laboratory
for Chemistry and Life Science, Institute
of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Tomohito Ide
- Department
of Chemical Science and Engineering, National
Institute of Technology, Tokyo College, 1220-2 Kunugida-machi, Hachioji-shi, Tokyo 193-0997, Japan
| | - Take-aki Koizumi
- Advanced
Institute of Analysis Center, Shizuoka Institute
of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan
| | - Kohtaro Osakada
- Laboratory
for Chemistry and Life Science, Institute
of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- National
Institute of Advance Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba 305-8565, Japan
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29
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Wong EKH, Chan MHY, Tang WK, Leung MY, Yam VWW. Molecular Alignment of Alkynylplatinum(II) 2,6-Bis(benzimidazol-2-yl)pyridine Double Complex Salts and the Formation of Well-Ordered Nanostructures Directed by Pt···Pt and Donor-Acceptor Interactions. J Am Chem Soc 2022; 144:5424-5434. [PMID: 35302371 DOI: 10.1021/jacs.1c12994] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A new class of alkynylplatinum(II) bzimpy (bzimpy = bis(benzimidazol-2-yl)pyridine) double complex salts (DCSs) containing dialkoxynaphthalene or pyromellitic diimide moieties on the alkynyl ligand has been reported to display distinct morphological properties compared to their precursor alkynylplatinum(II) complexes, with the capability of being aligned by the directional Pt···Pt and/or π-π stacking interactions. The incorporation of donor and acceptor units on the alkynyl ligands has been found to significantly perturb the alignment of the oppositely charged complex ions in the DCSs to stack in a twisted head-to-head manner, attributed to the additional driving forces of electrostatic and donor-acceptor interactions. The modulation of the Pt···Pt distances and the extent of aggregate formation have been demonstrated by altering the charge matching between the platinum(II) bzimpy moieties and the donor or acceptor moieties on the alkynyl ligand.
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Affiliation(s)
- Eric Ka-Ho Wong
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Michael Ho-Yeung Chan
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Wai Kit Tang
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Ming-Yi Leung
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
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30
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Amemori S, Hamamoto R, Mizuno M. Enhancement of association constants of various charge-transfer complexes in siloxane solvents. NEW J CHEM 2022. [DOI: 10.1039/d2nj00214k] [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
The association constants of various charge-transfer complexes were evaluated in n-hexane, octamethyltrisiloxane and PDMS to investigate the solvent effect.
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Affiliation(s)
- Shogo Amemori
- NanoMaterials Research Institute, Kanazawa University, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan
| | - Ryosuke Hamamoto
- School of Chemistry, College of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan
| | - Motohiro Mizuno
- NanoMaterials Research Institute, Kanazawa University, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan
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31
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Appukutti N, de Vries AH, Gudeangadi PG, Claringbold BR, Garrett MD, Reithofer MR, Serpell CJ. Sequence-complementarity dependent co-assembly of phosphodiester-linked aromatic donor–acceptor trimers. Chem Commun (Camb) 2022; 58:12200-12203. [DOI: 10.1039/d2cc00239f] [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
Sequence-defined trimers of phosphodiester-linked aromatic donor–acceptors self-assemble according to monomer order, and co-assemble into new structures with their complementary sequence.
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Affiliation(s)
- Nadeema Appukutti
- School of Chemistry and Forensic Science, Ingram Building, University of Kent, Canterbury, Kent, CT2 7NH, UK
| | - Alex H. de Vries
- Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
| | - Prashant G. Gudeangadi
- School of Chemistry and Forensic Science, Ingram Building, University of Kent, Canterbury, Kent, CT2 7NH, UK
| | - Bini R. Claringbold
- School of Chemistry and Forensic Science, Ingram Building, University of Kent, Canterbury, Kent, CT2 7NH, UK
| | - Michelle D. Garrett
- School of Biosciences, Stacey Building, University of Kent, Canterbury, Kent, CT2 7NJ, UK
| | - Michael R. Reithofer
- Dept. of Inorganic Chemistry, University of Vienna, Wahringer Strabe. 42, 1090 Vienna, Austria
| | - Christopher J. Serpell
- School of Chemistry and Forensic Science, Ingram Building, University of Kent, Canterbury, Kent, CT2 7NH, UK
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32
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Li C, Ok M, Choi H, Jung JH. Metallosupramolecular polymers formed with silver(i) ions in aqueous solution. NEW J CHEM 2022. [DOI: 10.1039/d1nj05146f] [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
Supramolecular polymers of a terpyridine-based ligand (L) at three different concentrations of AgNO3 (0, 0.5, and 1.0 equiv.).
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Affiliation(s)
- Chenxing Li
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Mirae Ok
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Heekyoung Choi
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
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33
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Samanta S, Mallick D, Roy RK. Folding of aromatic polyamides into a rare intrachain β-sheet type structure and further reinforcement of the secondary structure through host–guest interactions. Polym Chem 2022. [DOI: 10.1039/d2py00202g] [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
We report the design, synthesis, and folding of aromatic polyamides into an intrachain β-sheet-like structure. Additionally, the effect of a guest molecule in stabilizing the β-sheet structure has also been demonstrated here.
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Affiliation(s)
- Subhendu Samanta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Sector 81, SAS Nagar, Manauli, (PO) 140 306, Punjab, India
| | - Dibyendu Mallick
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata – 700073, West Bengal, India
| | - Raj Kumar Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Sector 81, SAS Nagar, Manauli, (PO) 140 306, Punjab, India
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34
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Pérez de Carvasal K, Riccardi C, Russo Krauss I, Cavasso D, Vasseur JJ, Smietana M, Morvan F, Montesarchio D. Charge-Transfer Interactions Stabilize G-Quadruplex-Forming Thrombin Binding Aptamers and Can Improve Their Anticoagulant Activity. Int J Mol Sci 2021; 22:9510. [PMID: 34502432 PMCID: PMC8430690 DOI: 10.3390/ijms22179510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/24/2021] [Accepted: 08/27/2021] [Indexed: 02/07/2023] Open
Abstract
In the search for optimized thrombin binding aptamers (TBAs), we herein describe the synthesis of a library of TBA analogues obtained by end-functionalization with the electron-rich 1,5-dialkoxy naphthalene (DAN) and the electron-deficient 1,8,4,5-naphthalenetetra-carboxylic diimide (NDI) moieties. Indeed, when these G-rich oligonucleotides were folded into the peculiar TBA G-quadruplex (G4) structure, effective donor-acceptor charge transfer interactions between the DAN and NDI residues attached to the extremities of the sequence were induced, providing pseudo-cyclic structures. Alternatively, insertion of NDI groups at both extremities produced TBA analogues stabilized by π-π stacking interactions. All the doubly-modified TBAs were characterized by different biophysical techniques and compared with the analogues carrying only the DAN or NDI residue and unmodified TBA. These modified TBAs exhibited higher nuclease resistance, and their G4 structures were markedly stabilized, as evidenced by increased Tm values compared to TBA. These favorable properties were also associated with improved anticoagulant activity for one DAN/NDI-modified TBA, and for one NDI/NDI-modified TBA. Our results indicated that TBA pseudo-cyclic structuring by ad hoc designed end-functionalization represents an efficient approach to improve the aptamer features, while pre-organizing and stabilizing the G4 structure but allowing sufficient flexibility to the aptamer folding, which is necessary for optimal thrombin recognition.
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Affiliation(s)
- Kévan Pérez de Carvasal
- Institut des Biomolécules Max Mousseron, University Montpellier, CNRS, ENSCM, 34095 Montpellier, France; (K.P.d.C.); (J.-J.V.); (M.S.)
| | - Claudia Riccardi
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 21, I-80126 Naples, Italy; (C.R.); (I.R.K.); (D.C.)
| | - Irene Russo Krauss
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 21, I-80126 Naples, Italy; (C.R.); (I.R.K.); (D.C.)
- CSGI—Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Domenico Cavasso
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 21, I-80126 Naples, Italy; (C.R.); (I.R.K.); (D.C.)
- CSGI—Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Jean-Jacques Vasseur
- Institut des Biomolécules Max Mousseron, University Montpellier, CNRS, ENSCM, 34095 Montpellier, France; (K.P.d.C.); (J.-J.V.); (M.S.)
| | - Michael Smietana
- Institut des Biomolécules Max Mousseron, University Montpellier, CNRS, ENSCM, 34095 Montpellier, France; (K.P.d.C.); (J.-J.V.); (M.S.)
| | - François Morvan
- Institut des Biomolécules Max Mousseron, University Montpellier, CNRS, ENSCM, 34095 Montpellier, France; (K.P.d.C.); (J.-J.V.); (M.S.)
| | - Daniela Montesarchio
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 21, I-80126 Naples, Italy; (C.R.); (I.R.K.); (D.C.)
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35
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Madhu M, Ramakrishnan R, Vijay V, Hariharan M. Free Charge Carriers in Homo-Sorted π-Stacks of Donor-Acceptor Conjugates. Chem Rev 2021; 121:8234-8284. [PMID: 34133137 DOI: 10.1021/acs.chemrev.1c00078] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inspired by the high photoconversion efficiency observed in natural light-harvesting systems, the hierarchical organization of molecular building blocks has gained impetus in the past few decades. Particularly, the molecular arrangement and packing in the active layer of organic solar cells (OSCs) have garnered significant attention due to the decisive role of the nature of donor/acceptor (D/A) heterojunctions in charge carrier generation and ultimately the power conversion efficiency. This review focuses on the recent developments in emergent optoelectronic properties exhibited by self-sorted donor-on-donor/acceptor-on-acceptor arrangement of covalently linked D-A systems, highlighting the ultrafast excited state dynamics of charge transfer and transport. Segregated organization of donors and acceptors promotes the delocalization of photoinduced charges among the stacks, engendering an enhanced charge separation lifetime and percolation pathways with ambipolar conductivity and charge carrier yield. Covalently linking donors and acceptors ensure a sufficient D-A interface and interchromophoric electronic coupling as required for faster charge separation while providing better control over their supramolecular assemblies. The design strategies to attain D-A conjugate assemblies with optimal charge carrier generation efficiency, the scope of their application compared to state-of-the-art OSCs, current challenges, and future opportunities are discussed in the review. An integrated overview of rational design approaches derived from the comprehension of underlying photoinduced processes can pave the way toward superior optoelectronic devices and bring in new possibilities to the avenue of functional supramolecular architectures.
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Affiliation(s)
- Meera Madhu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
| | - Remya Ramakrishnan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
| | - Vishnu Vijay
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
| | - Mahesh Hariharan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
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36
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Tsuchida Y, Aratsu K, Hiraoka S, Yoshizawa M. An Aromatic Oligomer Micelle: Large Enthalpic Stabilization and Selective Oligothiophene Uptake. Angew Chem Int Ed Engl 2021; 60:12754-12758. [PMID: 33773001 DOI: 10.1002/anie.202101453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/24/2021] [Indexed: 11/06/2022]
Abstract
An aromatic oligomer micelle, featuring both high stability and high uptake ability, was quantitatively formed in water from amphiphilic oligomers, composed of three bent polyaromatic amphiphiles connected alternately by two hydrophilic chains. The well-defined micelle, with a diameter of ca. 2 nm, remains intact even under highly diluted conditions (ca. 3 μM) and at elevated temperature (>130 °C), due to the polyaromatic chelate effect. The thermodynamic studies reveal that large enthalpic gain (ΔH=-110 kJ mol-1 ) is the key for the micelle formation. The oligomer micelle selectively encapsulates unsubstituted oligothiophenes (≥4-mer) to a high degree and the resultant, aqueous host-guest complexes display unusual emission derived from the multiply stacked oligomers. Furthermore, facile uptake and release of unsubstituted polythiophenes can be achieved using the oligomer micelle.
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Affiliation(s)
- Yamato Tsuchida
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Keisuke Aratsu
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Shuichi Hiraoka
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
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37
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Tsuchida Y, Aratsu K, Hiraoka S, Yoshizawa M. An Aromatic Oligomer Micelle: Large Enthalpic Stabilization and Selective Oligothiophene Uptake. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yamato Tsuchida
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Keisuke Aratsu
- Department of Basic Science Graduate School of Arts and Sciences The University of Tokyo 3-8-1 Komaba, Meguro-ku Tokyo 153-8902 Japan
| | - Shuichi Hiraoka
- Department of Basic Science Graduate School of Arts and Sciences The University of Tokyo 3-8-1 Komaba, Meguro-ku Tokyo 153-8902 Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
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38
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Hu X, Schulz A, Lindner JO, Grüne M, Bialas D, Würthner F. Folding and fluorescence enhancement with strong odd-even effect for a series of merocyanine dye oligomers. Chem Sci 2021; 12:8342-8352. [PMID: 34221315 PMCID: PMC8221066 DOI: 10.1039/d1sc01678d] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A series of merocyanine (MC) oligomers with a varying number of chromophores from two to six has been synthesized via a peptide synthesis strategy. Solvent-dependent UV/vis spectroscopic studies reveal folding processes for the MC oligomers driven by strong dipole–dipole interactions resulting in well-defined π-stacks with antiparallel orientation of the dyes. Whilst even-numbered tetramer 4 and hexamer 6 only show partial folding into dimeric units, odd-numbered trimer 3 and pentamer 5 fold into π-stacks of three and five MC units upon decreasing solvent polarity. In-depth 2D NMR studies provided insight into the supramolecular structure. For trimer 3, an NMR structure could be generated revealing the presence of a well-defined triple π-stack in the folded state. Concomitant with folding, the fluorescence quantum yield is increased for all MC oligomers in comparison to the single chromophore. Based on radiative and non-radiative decay rates, this fluorescence enhancement can be attributed to the rigidification of the chromophores within the π-stacks that affords a pronounced decrease of the non-radiative decay rates. Theoretical investigations for the double and triple dye stacks based on time-dependent density functional theory (TD-DFT) calculations indicate for trimer 3 a pronounced mixing of Frenkel and charge transfer (CT) states. This leads to significant deviations from the predictions obtained by the molecular exciton theory which only accounts for the Coulomb interaction between the transition dipole moments of the chromophores. A series of merocyanine (MC) oligomers with a varying number of chromophores from two to six has been synthesized via a peptide synthesis strategy.![]()
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Affiliation(s)
- Xiaobo Hu
- Institut für Organische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexander Schulz
- Institut für Organische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Joachim O Lindner
- Center for Nanosystems Chemistry (CNC), Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Matthias Grüne
- Institut für Organische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - David Bialas
- Center for Nanosystems Chemistry (CNC), Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany.,Center for Nanosystems Chemistry (CNC), Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
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39
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Pappas CG, Liu B, Marić I, Ottelé J, Kiani A, van der Klok ML, Onck PR, Otto S. Two Sides of the Same Coin: Emergence of Foldamers and Self-Replicators from Dynamic Combinatorial Libraries. J Am Chem Soc 2021; 143:7388-7393. [PMID: 33955219 PMCID: PMC8154527 DOI: 10.1021/jacs.1c00788] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The ability of molecules
and systems to make copies of themselves
and the ability of molecules to fold into stable, well-defined three-dimensional
conformations are of considerable importance in the formation and
persistence of life. The question of how, during the emergence of
life, oligomerization reactions become selective and channel these
reactions toward a small number of specific products remains largely
unanswered. Herein, we demonstrate a fully synthetic chemical system
where structurally complex foldamers and self-replicating assemblies
emerge spontaneously and with high selectivity from pools of oligomers
as a result of forming noncovalent interactions. Whether foldamers
or replicators form depends on remarkably small differences in building
block structures and composition and experimental conditions. We also
observed the dynamic transformation of a foldamer into a replicator.
These results show that the structural requirements/design criteria
for building blocks that lead to foldamers are similar to those that
lead to replicators. What determines whether folding or replication
takes place is not necessarily the type of noncovalent interaction,
but only whether they occur intra- or intermolecularly. This work
brings together, for the first time, the fields of replicator and
foldamer chemistry.
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Affiliation(s)
- Charalampos G Pappas
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Bin Liu
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Ivana Marić
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Jim Ottelé
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Armin Kiani
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Marcus L van der Klok
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Patrick R Onck
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Sijbren Otto
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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40
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Kumar P, Kumar V, Gupta R. Dipicolinamide and isophthalamide based fluorescent chemosensors: recognition and detection of assorted analytes. Dalton Trans 2021; 49:9544-9555. [PMID: 32627772 DOI: 10.1039/d0dt01508c] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This perspective focuses on a variety of fluorescent receptors based on dipicolinamide and isophthalamide groups and their significant roles in the molecular recognition, sensing and detection of assorted analytes ranging from metal ions, anions, neutral molecules, drugs and explosives. Both the "turn-on" and "turn-off" nature of sensing highlights noteworthy applications in many fields encompassing biological, medicinal, environmental and analytical disciplines.
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Affiliation(s)
- Pramod Kumar
- Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Vijay Kumar
- Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Rajeev Gupta
- Department of Chemistry, University of Delhi, Delhi-110007, India.
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41
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Bialas D, Kirchner E, Röhr MIS, Würthner F. Perspectives in Dye Chemistry: A Rational Approach toward Functional Materials by Understanding the Aggregate State. J Am Chem Soc 2021; 143:4500-4518. [DOI: 10.1021/jacs.0c13245] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- David Bialas
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Eva Kirchner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Merle I. S. Röhr
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
| | - Frank Würthner
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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42
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Castillo A, Ceballos P, Santos P, Cerón M, Venkatesan P, Pérez-Gutiérrez E, Sosa-Rivadeneyra M, Thamotharan S, Siegler MA, Percino MJ. Solution and Solid-State Photophysical Properties of Positional Isomeric Acrylonitrile Derivatives with Core Pyridine and Phenyl Moieties: Experimental and DFT Studies. Molecules 2021; 26:1500. [PMID: 33801942 PMCID: PMC8001298 DOI: 10.3390/molecules26061500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/26/2021] [Accepted: 03/04/2021] [Indexed: 11/17/2022] Open
Abstract
The compounds I (Z)-2-(phenyl)-3-(2,4,5-trimethoxyphenyl)acrylonitrile with one side (2,4,5-MeO-), one symmetrical (2Z,2'Z)-2,2'-(1,4-phenylene)bis(3-(2,4,5-trimethoxyphenyl)acrylonitrile), II (both sides with (2,4,5-MeO-), and three positional isomers with pyridine (Z)-2-(pyridin-2- 3, or 4-yl)-3-(2,4,5-trimethoxyphenyl)acrylonitrile, III-V were synthetized and characterized by UV-Vis, fluorescence, IR, H1-NMR, and EI mass spectrometry as well as single crystal X-ray diffraction (SCXRD). The optical properties were strongly influenced by the solvent (hyperchromic and hypochromic shift), which were compared with the solid state. According to the solvatochromism theory, the excited-state (μe) and ground-state (μg) dipole moments were calculated based on the variation of Stokes shift with the solvent's relative permittivity, refractive index, and polarity parameters. SCXRD analyses revealed that the compounds I and II crystallized in the monoclinic system with the space group, P21/n and P21/c, respectively, and with Z = 4 and 2. III, IV, and V crystallized in space groups: orthorhombic, Pbca; triclinic, P-1; and monoclinic, P21 with Z = 1, 2, and 2, respectively. The intermolecular interactions for compounds I-V were investigated using the CCDC Mercury software and their energies were quantified using PIXEL. The density of states (DOS), molecular electrostatic potential surfaces (MEPS), and natural bond orbitals (NBO) of the compounds were determined to evaluate the photophysical properties.
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Affiliation(s)
- Armando Castillo
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa 72960, Mexico; (A.C.); (P.C.); (P.S.); (M.C.); (P.V.); (E.P.-G.)
| | - Paulina Ceballos
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa 72960, Mexico; (A.C.); (P.C.); (P.S.); (M.C.); (P.V.); (E.P.-G.)
| | - Pilar Santos
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa 72960, Mexico; (A.C.); (P.C.); (P.S.); (M.C.); (P.V.); (E.P.-G.)
| | - Margarita Cerón
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa 72960, Mexico; (A.C.); (P.C.); (P.S.); (M.C.); (P.V.); (E.P.-G.)
| | - Perumal Venkatesan
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa 72960, Mexico; (A.C.); (P.C.); (P.S.); (M.C.); (P.V.); (E.P.-G.)
| | - Enrique Pérez-Gutiérrez
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa 72960, Mexico; (A.C.); (P.C.); (P.S.); (M.C.); (P.V.); (E.P.-G.)
| | - Martha Sosa-Rivadeneyra
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esquina San Claudio, San Manuel, Puebla 72570, Mexico;
| | - Subbiah Thamotharan
- Biomolecular Crystallography Laboratory, School of Chemical & Biotechnology, Department of Bioinformatics, SASTRA Deemed University, Thanjavur 613401, India;
| | - Maxime A. Siegler
- Department of Chemistry, Johns Hopkins University, New Chemistry Building, 3400 N. Charles St., Baltimore, MD 21218, USA;
| | - María Judith Percino
- Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa 72960, Mexico; (A.C.); (P.C.); (P.S.); (M.C.); (P.V.); (E.P.-G.)
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43
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Keshri SK, Ishizuka T, Kojima T, Matsushita Y, Takeuchi M. Long-Range Order in Supramolecular π Assemblies in Discrete Multidecker Naphthalenediimides. J Am Chem Soc 2021; 143:3238-3244. [PMID: 33600719 DOI: 10.1021/jacs.0c13389] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report herein the solution and solid-state studies of conformationally flexible multidecker naphthalenediimides (NDIs) in which the chromophoric NDI units intramolecularly assemble into a series of discrete π-stacks. The X-ray crystallography reveals the existence of exclusively all-syn NDIs orientations in lower congeners while all-anti in a higher congener, suggesting short- to long-range π···π interactions throughout the slipped πNDI chromophoric array. The UV/vis and fluorescence spectra evaluate the discrete π-stacks by remarkable optical changes upon cooling in solution. Furthermore, we carried out a systematic electrochemical investigation to gain an insight into redox properties of the long-range π-stacked structures. The higher congener (5NDI) shows a ten-electron reversible reduction process in a small working potential window (∼0.8 V). To our knowledge, this is an unusual observation in an organic molecular system to undergo up to ten-electron reduction. These results pave the way to design multidecker π-stacks in which structural control with specific electronic properties would be engineered.
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Affiliation(s)
- Sudhir Kumar Keshri
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8477, Japan
| | - Takahiko Kojima
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8477, Japan
| | - Yoshitaka Matsushita
- Materials Analysis Station, Research Network and Facility Services Division, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Masayuki Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
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44
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Genabeek B, Lamers BAG, Hawker CJ, Meijer EW, Gutekunst WR, Schmidt BVKJ. Properties and applications of precision oligomer materials; where organic and polymer chemistry join forces. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200862] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bas Genabeek
- Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Eindhoven The Netherlands
- Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Brigitte A. G. Lamers
- Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Eindhoven The Netherlands
- Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Craig J. Hawker
- Materials Research Laboratory University of California Santa Barbara California USA
- Materials Department University of California Santa Barbara California USA
| | - E. W. Meijer
- Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Eindhoven The Netherlands
- Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven The Netherlands
| | - Will R. Gutekunst
- School of Chemistry and Biochemistry Georgia Institute of Technology Atlanta Georgia USA
| | - Bernhard V. K. J. Schmidt
- Department of Colloid Chemistry Max Planck Institute of Colloids and Interfaces Potsdam Germany
- School of Chemisty University of Glasgow Glasgow UK
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45
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Da Silva Rodrigues R, Luis ET, Marshall DL, McMurtrie JC, Mullen KM. Hydrazone exchange: a viable route for the solid-tethered synthesis of [2]rotaxanes. NEW J CHEM 2021. [DOI: 10.1039/d1nj00388g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Using a hydrazone exchange methodology, resin beads were functionalised with [2]rotaxanes at up to 80% efficiency—higher than using other dynamic or irreversible synthetic approaches to form self-assembled structures on solid supports.
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Affiliation(s)
| | - Ena T. Luis
- School of Chemistry and Physics
- Queensland University of Technology
- Brisbane
- Australia
- Centre for Materials Science
| | - David L. Marshall
- Centre for Materials Science
- Queensland University of Technology
- Brisbane
- Australia
- Central Analytical Research Facility
| | - John C. McMurtrie
- School of Chemistry and Physics
- Queensland University of Technology
- Brisbane
- Australia
- Centre for Materials Science
| | - Kathleen M. Mullen
- School of Chemistry and Physics
- Queensland University of Technology
- Brisbane
- Australia
- Centre for Materials Science
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46
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Deng R, Wang C, Milton M, Tang D, Hollingsworth AD, Weck M. Side-chain functionalized supramolecular helical brush copolymers. Polym Chem 2021. [DOI: 10.1039/d1py00373a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The construction of a supramolecular brush copolymer featuring a helical backbone is described. The pendant chains are grafted onto the backbone through metal coordination.
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Affiliation(s)
- Ru Deng
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Chengyuan Wang
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Margarita Milton
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Danni Tang
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Andrew D. Hollingsworth
- Department of Physics and Center for Soft Matter Research, New York University, New York, NY 10003, USA
| | - Marcus Weck
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
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47
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Pérez de Carvasal K, Aissaoui N, Vergoten G, Bellot G, Vasseur JJ, Smietana M, Morvan F. Folding of phosphodiester-linked donor–acceptor oligomers into supramolecular nanotubes in water. Chem Commun (Camb) 2021; 57:4130-4133. [DOI: 10.1039/d1cc01064f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Water soluble foldamers, synthesized by DNA synthesis with dialkoxynaphthalene and naphthalene-tetracarboxylic diimide blocks, formed supramolecular nanotubes in water.
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Affiliation(s)
| | - Nesrine Aissaoui
- Université de Montpellier
- INSERM
- CNRS
- Centre de Biochimie Structurale
- Montpellier
| | - Gérard Vergoten
- Université de Lille
- Inserm
- INFINITE – U1286
- Institut de Chimie Pharmaceutique Albert Lespagnol (ICPAL)
- Faculté de Pharmacie
| | - Gaëtan Bellot
- Université de Montpellier
- INSERM
- CNRS
- Centre de Biochimie Structurale
- Montpellier
| | - Jean-Jacques Vasseur
- Université de Montpellier
- CNRS
- ENSCM
- Institut des Biomolécules Max Mousseron
- Montpellier
| | - Michael Smietana
- Université de Montpellier
- CNRS
- ENSCM
- Institut des Biomolécules Max Mousseron
- Montpellier
| | - François Morvan
- Université de Montpellier
- CNRS
- ENSCM
- Institut des Biomolécules Max Mousseron
- Montpellier
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48
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Wang X, Shi Z, Chen H, Huang F. Nanoscale integration of porphyrin in GroEL protein cage: Photophysical and photochemical investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118596. [PMID: 32599481 DOI: 10.1016/j.saa.2020.118596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/02/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
In this paper, we introduce a new type of functional, supramolecular porphyrin conjugate created using the bacterial GroEL protein cage based on non-specific hydrophobic interaction. The synthesis, structure and property of the porphyrin conjugate were characterized by dynamic light scattering, UV-vis spectroscopy and fluorescence spectroscopy. We observed that the model zinc-tetraphenylporphyrin (Zn-TPP) with high hydrophobicity can be well-dispersed in aqueous solutions with the aid of GroEL open chamber, which is known to be a favorable nanocompartment for aggregation-prone molecules. The maximal encapsulation efficiency of Zn-TPP in GroEL was determined to be ~98%. It is further seen that the constructed double Zn-TPP-GroEL complex exhibited good photocatalytic activity in the model reactions of the production of singlet oxygen and the reduction of methyl viologen under illumination with visible light. Moreover, we found that GroEL can significantly improve the photostability of Zn-TPP molecules as a result of nanoscale assembly within its hydrophobic chamber. Hence enhanced water solubility and photostability of Zn-TPP, which are considered as the first two hurdles for the wide usage of porphyrins, were achieved simultaneously by the development of GroEL cage as a building block. Supramolecular nanostructures formed from porphyrins (or related molecules) and GroEL for photocatalysis would greatly simplify applications of such structures.
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Affiliation(s)
- Xiaoqiang Wang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao, Shandong 266580, PR China.
| | - Zhuang Shi
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao, Shandong 266580, PR China
| | - Han Chen
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao, Shandong 266580, PR China
| | - Fang Huang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao, Shandong 266580, PR China.
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49
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Keshri SK, Nakanishi W, Takai A, Ishizuka T, Kojima T, Takeuchi M. Discrete π Stack of a Tweezer-Shaped Naphthalenediimide-Anthracene Conjugate. Chemistry 2020; 26:13288-13294. [PMID: 32583576 DOI: 10.1002/chem.202002477] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Indexed: 12/22/2022]
Abstract
The design and synthesis of a tweezer-shaped naphthalenediimide (NDI)-anthracene conjugate (2NDI) are reported. In the structure of the closed form (πNDI ⋅⋅⋅πNDI stack) of 2NDI, which was elucidated by single-crystal XRD, the existence of C-H⋅⋅⋅O hydrogen bonding involving the nearest carbonyl oxygen atom of an NDI unit was suggested. The tunability of πNDI ⋅⋅⋅πNDI interactions was studied by means of UV/Vis absorption, fluorescence and NMR spectroscopy and molecular modelling. This revealed that the πNDI ⋅⋅⋅πNDI interactions in 2NDI affect the absorption and emission properties depending on the temperature. Furthermore, in polar solvents, 2NDI prefers the stronger πNDI ⋅⋅⋅πNDI stack, whereas the πNDI ⋅⋅⋅πNDI interaction is diminished in nonpolar solvents. Importantly, the conformational variations of 2NDI can be reversibly switched by variation in temperature, and this suggests potential application for fluorogenic molecular switches upon temperature changes.
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Affiliation(s)
- Sudhir Kumar Keshri
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Waka Nakanishi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Atsuro Takai
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Takahiko Kojima
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Masayuki Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
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50
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Cao R, Rossdeutcher RB, Wu X, Gong B. Oligo(5-amino- N-acylanthranilic acids): Amide Bond Formation without Coupling Reagent and Folding upon Binding Anions. Org Lett 2020; 22:7496-7501. [PMID: 32959659 DOI: 10.1021/acs.orglett.0c02696] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Oligomers of 5-amino-N-acylanthranilic acid, previously unknown aromatic oligoamides that cannot be obtained with known amide coupling methods, are synthesized based on a new, highly efficient amide-bond formation strategy that takes advantage of the ring-opening of benzoxazinone derivatives. These oligoamides offer multiple backbone NH groups as H-bond donors which, in the presence of iodide or chloride ion, are convergently arranged and H-bonded, which enforces a folded, crescent conformation. These aromatic oligoamides provide a versatile platform based on which anion-dependent foldamers, or anion binders with tunable affinity and specificity, are being constructed.
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Affiliation(s)
- Ruikai Cao
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, New York 14260, United States
| | - Robert B Rossdeutcher
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, New York 14260, United States
| | - Xiangxiang Wu
- Academy of Chinese Medical Science, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, Henan, China
| | - Bing Gong
- Department of Chemistry, University at Buffalo, the State University of New York, Buffalo, New York 14260, United States
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