1
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Roy S, Chaturvedi A, Dey S, Puneeth Kumar DRGKR, Pahan S, Panda Mahapatra S, Mandal P, Gopi HN. Anion Tuned Structural Modulation and Nonlinear Optical Effects of Metal-Ion Directed 3 10 -Helix Networks. Chemistry 2023; 29:e202303135. [PMID: 37867145 DOI: 10.1002/chem.202303135] [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: 09/26/2023] [Revised: 10/13/2023] [Accepted: 10/19/2023] [Indexed: 10/24/2023]
Abstract
Metals play an important role in the structure and functions of various proteins. The combination of metal ions and peptides have been emerging as an attractive field to create advanced structures and biomaterials. Here, we are reporting the anion-influenced, silver ion coordinated diverse networks of designed short tripeptide 310 -helices with terminal pyridyl groups. The short peptides adopted classical right-handed, left-handed and 310 EL -helical conformations in the presence of different silver salts. The peptides have displayed conformational flexibility to accommodate different sizes and interactions of anions to yield a variety of metal-coordinated networks. The complexes of metal ions and peptides have shown different porous networks, right- and left-handed helical polymers, transformation of helix into superhelix and 2 : 2 metal-peptide macrocycles. Further, the metal-peptide crystals with inherent dipoles of helical peptides gave striking second harmonic generation response. The optical energy upconversion from NIR to red and green light is demonstrated. Overall, we have shown the utilization of short 310 -helices for the construction of diverse metal-coordinated helical networks and notable non-linear optical effects.
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Affiliation(s)
- Souvik Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
| | - Aman Chaturvedi
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
| | - Sanjit Dey
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
| | - DRGKoppalu R Puneeth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
| | - Saikat Pahan
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
| | - Souvik Panda Mahapatra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
| | - Pankaj Mandal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
| | - Hosahudya N Gopi
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, 411008, Pune, India
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2
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Li D, Ma C, Xiang J, Zhang K, Yang L, Gan Q. A Disulfide Switch Providing Absolute Handedness Control in Double Helices via Conversion from the Antiparallel to Parallel Helical Pattern. Chemistry 2021; 27:11663-11669. [PMID: 34014575 DOI: 10.1002/chem.202101221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Indexed: 11/09/2022]
Abstract
A strategy to reversibly switch the parallel/antiparallel helical conformation of aromatic double helices through the formation/breakage of a disulfide bond is presented. Single-crystal X-ray structures, NMR, and circular dichroism spectroscopy demonstrate that the double helices with terminal thiol groups favor an antiparallel helical arrangement both in the solid state and in solution, while the P/M bias of helicity induced by chiral segments from another extremity of the sequence is weak in this structural motif. The antiparallel helices can be rearranged to parallel helices through the disulfide connection of the sequences. This change enhances the bias of helical handedness and results in absolute chirality control of the double helices. The handedness-mediated process can be governed by the oxidation-reduction cycle, thereby switching the structural arrangement and the enhancement of chiral bias. In addition, we find that the sequences can dimerize into an intermolecular double helix with the disulfide connection. And the helical handedness is also fully controlled due to the head-to-head structural motif.
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Affiliation(s)
- Dongyao Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Chunmiao Ma
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Junfeng Xiang
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Kai Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Ling Yang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Quan Gan
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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3
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Chen H, Liu Y, Cheng X, Fang S, Sun Y, Yang Z, Zheng W, Ji X, Wu Z. Self‐Assembly of Size‐Controlled
m
‐Pyridine–Urea Oligomers and Their Biomimetic Chloride Ion Channels. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102174] [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)
- Hualong Chen
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Yajing Liu
- School of Pharmaceutical Science Capital Medical University Beijing 100069 China
| | - Xuebo Cheng
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Senbiao Fang
- School of Computer Science and Engineering Central South University Changsha 410012 China
| | - Yuli Sun
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Zequn Yang
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Wei Zheng
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Xunming Ji
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
- Institute of Hypoxia Medicine Xuanwu Hospital Capital Medical University Beijing 100053 China
| | - Zehui Wu
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
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4
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Chen H, Liu Y, Cheng X, Fang S, Sun Y, Yang Z, Zheng W, Ji X, Wu Z. Self-Assembly of Size-Controlled m-Pyridine-Urea Oligomers and Their Biomimetic Chloride Ion Channels. Angew Chem Int Ed Engl 2021; 60:10833-10841. [PMID: 33624345 DOI: 10.1002/anie.202102174] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Indexed: 01/06/2023]
Abstract
The m-pyridine urea (mPU) oligomer was constructed by using the intramolecular hydrogen bond formed by the pyridine nitrogen atom and the NH of urea and the intermolecular hydrogen bond of the terminal carbonyl group and the NH of urea. Due to the synergistic effect of hydrogen bonds, mPU oligomer folds and exhibits strong self-assembly behaviour. Affected by folding, mPU oligomer generates a twisted plane, and one of its important features is that the carbonyl group of the urea group orientates outwards from the twisted plane, while the NHs tend to direct inward. This feature is beneficial to NH attraction for electron-rich species. Among them, the trimer self-assembles into helical nanotubes, and can efficiently transport chloride ions. This study provides a novel and efficient strategy for constructing self-assembled biomimetic materials for electron-rich species transmission.
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Affiliation(s)
- Hualong Chen
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Yajing Liu
- School of Pharmaceutical Science, Capital Medical University, Beijing, 100069, China
| | - Xuebo Cheng
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Senbiao Fang
- School of Computer Science and Engineering, Central South University, Changsha, 410012, China
| | - Yuli Sun
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Zequn Yang
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Wei Zheng
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Xunming Ji
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China.,Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Zehui Wu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
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Abstract
Sequence-defined oligomeric molecules with discrete folding propensities, termed foldamers, are a versatile source of agents with tailored structure and function. An inspiration for the development of the foldamer paradigm are natural biomacromolecules, the sequence-encoded folding of which is the basis of life. Metal ions and clusters are common features in proteins, where the role of metal varies from supporting structure to enabling function. The ubiquity of metals in natural systems suggests promise for metals in the context of folded artificial backbones. In this Minireview, we highlight efforts to realize this potential through a survey of published work on the design, synthesis, and characterization of metal-binding foldamers.
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Affiliation(s)
- Shilpa R Rao
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Shelby L Schettler
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - W Seth Horne
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
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6
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Bai D, Yan T, Wang S, Wang Y, Fu J, Fang X, Zhu J, Liu J. Reversible Ligand‐Gated Ion Channel via Interconversion between Hollow Single Helix and Intertwined Double Helix. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916755] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Dongya Bai
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Tengfei Yan
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - Shi Wang
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Yanbo Wang
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Jiya Fu
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Xiaomin Fang
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Junyan Zhu
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Junqiu Liu
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
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7
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Bai D, Yan T, Wang S, Wang Y, Fu J, Fang X, Zhu J, Liu J. Reversible Ligand‐Gated Ion Channel via Interconversion between Hollow Single Helix and Intertwined Double Helix. Angew Chem Int Ed Engl 2020; 59:13602-13607. [DOI: 10.1002/anie.201916755] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 04/13/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Dongya Bai
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Tengfei Yan
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - Shi Wang
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Yanbo Wang
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Jiya Fu
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Xiaomin Fang
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Junyan Zhu
- Institute of Functional Organic Molecular Engineering Henan Engineering Laboratory of Flame-Retardant and Functional Materials College of Chemistry and Chemical Engineering Henan University Kaifeng 475004 China
| | - Junqiu Liu
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
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8
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Xing P, Zhao Y. Controlling Supramolecular Chirality in Multicomponent Self-Assembled Systems. Acc Chem Res 2018; 51:2324-2334. [PMID: 30179457 DOI: 10.1021/acs.accounts.8b00312] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chirality exists as a ubiquitous phenomenon in nature, from molecular level l-amino acids, d-sugar, secondary structures of proteins, DNA, RNA, and nanoscale helices to macroscopic conch and even galaxy. The aggregation of molecular building blocks with or without chiral centers might bring about asymmetric spatial stacking, which further results in the appearance of nonsymmetry in extended scales like helical nanofibers. This phenomenon, known as supramolecular chirality, is an important branch of supramolecular and self-assembly chemistry, which relates intimately with biomimetics, asymmetric catalysis, and designing chiroptic advanced materials. One of the important research focuses among supramolecular chirality is about rational manipulation of chirality amplification and handedness, presenting a profound influence on the performance of resulting soft materials such as circularly polarized luminescence and cell adhesion on hydrogels. The control over supramolecular chirality normally relies on two factors, i.e., thermodynamic and kinetic variables dependent on molecular structural parameters and environmental contributions, respectively. Supramolecular chirality in two or more component-based systems places an emphasis on thermodynamic control as it occurs from either integrated coassembly or separated self-sorting, which is more sophisticated than that of single component systems. Thus, the study on supramolecular chirality in multicomponent systems could mimic complicated biosystems, allowing for better understanding about the origin of natural chirality and extended applications as biomimetics. To date, the exploration of supramolecular chirality in multicomponent systems is restricted on both fundamental and application aspects when compared to more matured single component systems. Over the past few years, we have carried out systematic studies on several systems expressing supramolecular chirality from chiral amplification or symmetry breaking. We emphasized more the thermodynamic control by introducing a second component to form noncovalent bonding like hydrogen bonding or coordination interactions. In this Account, we would specifically discuss rational manipulation of the occurrence, transfer, and inversion of supramolecular chirality by taking several of the latest representative examples. In the multicomponent systems, in addition to the building blocks with chiral centers, the second or third components could be structural analogues and achiral small molecules such as bipyridines, melamine, metal ions, inorganic nanomaterials, and even solvents. These second or third components are able to incorporate during the aggregation to form coassembly via noncovalent bonds, influencing spatial arrangements of building blocks within various dimensions from vesicles and nanofibers to organic/inorganic hybrids. Other than chirality, morphology, stimulus responsiveness, and properties could also be well tailored by controlling interactions between different components.
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Affiliation(s)
- Pengyao Xing
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue 639798, Singapore
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9
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Ghosh T, Fridman N, Kosa M, Maayan G. Self-Assembled Cyclic Structures from Copper(II) Peptoids. Angew Chem Int Ed Engl 2018; 57:7703-7708. [DOI: 10.1002/anie.201800583] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/01/2018] [Indexed: 01/11/2023]
Affiliation(s)
- Totan Ghosh
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Monica Kosa
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
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10
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Ghosh T, Fridman N, Kosa M, Maayan G. Self-Assembled Cyclic Structures from Copper(II) Peptoids. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800583] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Totan Ghosh
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Monica Kosa
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry; Technion-Israel Institute of Technology; Technion City Haifa 3200008 Israel
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11
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Resa S, Miguel D, Guisán-Ceinos S, Mazzeo G, Choquesillo-Lazarte D, Abbate S, Crovetto L, Cárdenas DJ, Carreño MC, Ribagorda M, Longhi G, Mota AJ, Álvarez de Cienfuegos L, Cuerva JM. Sulfoxide-Induced Homochiral Folding of ortho
-Phenylene Ethynylenes (o
-OPEs) by Silver(I) Templating: Structure and Chiroptical Properties. Chemistry 2018; 24:2653-2662. [DOI: 10.1002/chem.201704897] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Sandra Resa
- Department of Organic Chemistry; University of Granada, UGR; C. U. Fuentenueva 18071 Granada Spain
| | - Delia Miguel
- Department of Physical Chemistry; University of Granada, UGR, Cartuja Campus; 18071 Granada Spain
| | - Santiago Guisán-Ceinos
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Cantoblanco; 28049 Madrid Spain
| | - Giuseppe Mazzeo
- Dipartimento di Medicina e Traslazionale; Università di Brescia; Viale Europa 11 25123 Brescia Italy
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos; Instituto Andaluz de Ciencias de la Tierra, CSIC-UGR; Armilla, Granada Spain
| | - Sergio Abbate
- Dipartimento di Medicina e Traslazionale; Università di Brescia; Viale Europa 11 25123 Brescia Italy
| | - Luis Crovetto
- Department of Physical Chemistry; University of Granada, UGR, Cartuja Campus; 18071 Granada Spain
| | - Diego J. Cárdenas
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Cantoblanco; 28049 Madrid Spain
| | - M. Carmen Carreño
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Cantoblanco; 28049 Madrid Spain
| | - María Ribagorda
- Department of Organic Chemistry; Universidad Autónoma de Madrid, Cantoblanco; 28049 Madrid Spain
| | - Giovanna Longhi
- Dipartimento di Medicina e Traslazionale; Università di Brescia; Viale Europa 11 25123 Brescia Italy
| | - Antonio J. Mota
- Department of Inorganic Chemistry; University of Granada, UGR; C. U. Fuentenueva 18071 Granada Spain
| | | | - Juan M. Cuerva
- Department of Organic Chemistry; University of Granada, UGR; C. U. Fuentenueva 18071 Granada Spain
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