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Lago-Silva M, Fernández-Míguez M, Rodríguez R, Quiñoá E, Freire F. Stimuli-responsive synthetic helical polymers. Chem Soc Rev 2024; 53:793-852. [PMID: 38105704 DOI: 10.1039/d3cs00952a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Synthetic dynamic helical polymers (supramolecular and covalent) and foldamers share the helix as a structural motif. Although the materials are different, these systems also share many structural properties, such as helix induction or conformational communication mechanisms. The introduction of stimuli responsive building blocks or monomer repeating units in these materials triggers conformational or structural changes, due to the presence/absence of the external stimulus, which are transmitted to the helix resulting in different effects, such as assymetry amplification, helix inversion or even changes in the helical scaffold (elongation, J/H helical aggregates). In this review, we show through selected examples how different stimuli (e.g., temperature, solvents, cations, anions, redox, chiral additives, pH or light) can alter the helical structures of dynamic helical polymers (covalent and supramolecular) and foldamers acting on the conformational composition or molecular structure of their components, which is also transmitted to the macromolecular helical structure.
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Affiliation(s)
- María Lago-Silva
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Manuel Fernández-Míguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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2
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Rey-Tarrío F, Rodríguez R, Quiñoá E, Freire F. Screw sense excess and reversals of helical polymers in solution. Nat Commun 2023; 14:1742. [PMID: 36990975 DOI: 10.1038/s41467-023-37405-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
AbstractThe helix reversal is a structural motif found in helical polymers in the solid state, but whose existence is elusive in solution. Herein, we have shown how the photochemical electrocyclization (PEC) of poly(phenylacetylene)s (PPAs) can be used to determine not only the presence of helix reversals in polymer solution, but also to estimate the screw sense excess. To perform these studies, we used a library of well folded PPAs and different copolymers series made by enantiomeric comonomers that show chiral conflict effect. The results obtained indicate that the PEC of a PPA will depend on the helical scaffold adopted by the PPA backbone and on its folding degree. Then, from these studies it is possible to determine the screw sense excess of a PPA, highly important in applications such as chiral stationary phases in HPLC or asymmetric synthesis.
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3
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Rodríguez R, Rivadulla-Cendal E, Quiñoá E, Freire F. Diastereomeric multi-chiral pendant groups: Their key role in stimuli-responsive polymeric responses. Chirality 2023; 35:172-177. [PMID: 36625726 PMCID: PMC10107841 DOI: 10.1002/chir.23530] [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: 11/30/2022] [Revised: 12/22/2022] [Accepted: 12/24/2022] [Indexed: 01/11/2023]
Abstract
Chiral information transmission in helical polymers bearing multi-chiral pendant groups is usually determined by the absolute configuration of the first chiral center. The second chiral residue usually has low-to-null influence in the macromolecular handedness of the polymer, due to its remote position respect to the polyene main chain. Here, we demonstrate how the stimuli responsive properties of diastereomeric polymers, obtained by changing the absolute configuration of the second chiral center, are different due to the unlike properties of diastereoisomers.
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Affiliation(s)
- Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Elena Rivadulla-Cendal
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
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4
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One-handed helical twisting in optically inactive poly(phenylacetylene) bearing two hydroxyl groups upon the departure of a single enantiomer. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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5
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Rodríguez R, Rivadulla‐Cendal E, Fernández‐Míguez M, Fernández B, Maeda K, Quiñoá E, Freire F. Full Control of the Chiral Overpass Effect in Helical Polymers: P/M Screw Sense Induction by Remote Chiral Centers After Bypassing the First Chiral Residue. Angew Chem Int Ed Engl 2022; 61:e202209953. [PMID: 36121741 PMCID: PMC9828504 DOI: 10.1002/anie.202209953] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Indexed: 01/12/2023]
Abstract
In helical polymers, helical sense induction is usually commanded by teleinduction mechanism, where the largest substituent of the chiral residue directly attached to the main chain is the one that commands the helical sense. In this work, different helical structures with different helical senses are induced in a helical polymer [poly-(phenylacetylene)] when the conformational composition of two different dihedral angles of a pendant group with more than two chiral residues is tamed. Thus, while the dihedral angle at chiral residue 1 [(R)- or (S)-alanine], attached to the backbone, produces an extended or bent conformation in the pendant resulting in two scaffolds with different stretching degree, the second dihedral angle at chiral residue 2 [(R)- or (S)-methoxyphenylacetamide] places the substituents of this chiral center in a different spatial orientation, originating opposite helical senses at the polymer that are induced through a total control of the "chiral overpass effect".
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Affiliation(s)
- Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain,WPI Nano Life Science Institute (WPI-NanoLSI)Kanazawa UniversityKakuma-machiKanazawa920-1192Japan
| | - Elena Rivadulla‐Cendal
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
| | - Manuel Fernández‐Míguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
| | - Berta Fernández
- Departamento de Química FísicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
| | - Katsuhiro Maeda
- WPI Nano Life Science Institute (WPI-NanoLSI)Kanazawa UniversityKakuma-machiKanazawa920-1192Japan,Graduate School of Natural Science and TechnologyKanazawa UniversityKakuma-machiKanazawa920-1192Japan
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) e Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
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6
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Rey‐Tarrío F, Guisán‐Ceinos S, Cuerva JM, Miguel D, Ribagorda M, Quiñoá E, Freire F. Photostability and Dynamic Helical Behavior in Chiral Poly(phenylacetylene)s with a Preferred Screw‐Sense. Angew Chem Int Ed Engl 2022; 61:e202207623. [PMID: 35731840 PMCID: PMC9543806 DOI: 10.1002/anie.202207623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Indexed: 11/18/2022]
Abstract
Helical polymers such as poly(phenylacetylene)s (PPAs) are interesting materials due to the possibility of tuning their helical scaffold (sense and elongation) once they have been prepared and by the presence of external stimuli. The main limitation in the application of PPAs is their poor photostability. These polymers degrade under visible light exposure through a photochemical electrocyclization process. In this work, it was demonstrated, through a selected example, how the photochemical degradation in PPAs is directly related to their dynamic helical behavior. Thus, while PPAs with dynamic helical structures show poor photostability under UV/Vis light exposure, poly‐(R)‐1, bearing an enantiopure sulfoxide group as pendant group and designed to have a quasi‐static helical behavior, shows a large photostability due to the restricted conformational composition at the polyene backbone, needed to orient the conjugated double bonds prior to the photochemical electrocyclization process and the subsequent degradation of the material.
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Affiliation(s)
- Francisco Rey‐Tarrío
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Santiago Guisán‐Ceinos
- Departamento de Química Orgánica Facultad de Ciencias Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Juan M. Cuerva
- Departamento de Química Orgánica. Facultad de Ciencias Universidad de Granada (UGR) Unidad de Excelencia de Química Aplicada a la Biomedicina y Medioambiente (UEQ) 18071 Granada Spain
| | - Delia Miguel
- Departamento de Fisicoquímica. Facultad de Farmacia Universidad de Granada (UGR, UEQ) 18071 Granada Spain
| | - Maria Ribagorda
- Departamento de Química Orgánica Facultad de Ciencias Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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7
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Rey-Tarrío F, Guisán-Ceinos S, Cuerva JM, Miguel D, Ribagorda M, Quiñoá E, Freire F. Photostability and Dynamic Helical Behavior in Chiral Poly(phenylacetylene)s with a Preferred Screw‐Sense. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207623] [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)
- Francisco Rey-Tarrío
- Universidade de Santiago de Compostela - Campus de Santiago: Universidade de Santiago de Compostela CiQUS SPAIN
| | - Santiago Guisán-Ceinos
- Universidad Autonoma de Madrid - Campus de Cantoblanco: Universidad Autonoma de Madrid Química Orgánica SPAIN
| | | | - Delia Miguel
- University of Granada: Universidad de Granada Physical Chemistry Department SPAIN
| | - Maria Ribagorda
- Universidad Autonoma de Madrid - Campus de Cantoblanco: Universidad Autonoma de Madrid Química Orgánica SPAIN
| | - Emilio Quiñoá
- Universidade de Santiago de Compostela - Campus de Santiago: Universidade de Santiago de Compostela CiQUS SPAIN
| | - Felix Freire
- Universidade de Santiago de Compostela Jenaro de la Fuente street s/n 15782 Santiago de Compostela SPAIN
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8
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Núñez-Martínez M, Arias S, Bergueiro J, Quiñoá E, Riguera R, Freire F. The Role of Polymer-AuNP Interaction in the Stimuli-Response Properties of PPA-AuNP Nanocomposites. Macromol Rapid Commun 2021; 43:e2100616. [PMID: 34761481 DOI: 10.1002/marc.202100616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/26/2021] [Indexed: 11/10/2022]
Abstract
The helical sense control of dynamic helical polymers such as poly(phenylacetylene)s (PPAs) is greatly affected when they are conjugated to AuNPs through a strong thiol-Au connection, which restricts conformational changes at the polymer. Thus, the classical thiol-MNP bonds must be replaced by weaker ones, such as supramolecular amide-Au interactions. A straightforward preparation of the PPA-Au nanocomposite by reduction of a preformed PPA-Au3+ complex cannot be used due to a redox reaction between the two components of the complex which degrades the polymer. To avoid the interaction between the PPA and the Au3+ ions before the reduction takes place, the metal ions are added to the polymer solution capped as a TOAB complex, which keeps the PPA stable due to the lack of PPA-Au3+ interactions. Ulterior reduction of the Au3+ ions by NaBH4 affords the desired nanocomposite, where the AuNPs are stabilized by supramolecular anilide-AuNPs interactions. By using this approach, 3.7 nm gold nanoparticles are generated and aligned along the polymer chain with a regular distance between particles of 6 nm that corresponds to two helical pitches. These nanocomposites show stimuli-responsive properties and are also able to form macroscopically chiral nanospheres with tunable size.
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Affiliation(s)
- Manuel Núñez-Martínez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Sandra Arias
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Julián Bergueiro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
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9
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Cao Y, Ren L, Zhang Y, Lu X, Zhang X, Yan J, Li W, Masuda T, Zhang A. Remarkable Effects of Anions on the Chirality of Thermoresponsive Helical Dendronized Poly(phenylacetylene)s. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00917] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuexin Cao
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Liangxuan Ren
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Yangwen Zhang
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Xueting Lu
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Xiacong Zhang
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Jiatao Yan
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Wen Li
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Toshio Masuda
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
| | - Afang Zhang
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Materials Building Room 447, Nanchen Street 333, Shanghai 200444, China
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Guan X, Wang S, Shi G, Zhang J, Wan X. Thermoswitching of Helical Inversion of Dynamic Polyphenylacetylenes through cis-trans Isomerization of Amide Pendants. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00538] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiaoyan Guan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Sheng Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ge Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jie Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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Rey‐Tarrío F, Rodríguez R, Quiñoá E, Riguera R, Freire F. Photochemical Electrocyclization of Poly(phenylacetylene)s: Unwinding Helices to Elucidate their 3D Structure in Solution. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014780] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Francisco Rey‐Tarrío
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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12
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Rey-Tarrío F, Rodríguez R, Quiñoá E, Riguera R, Freire F. Photochemical Electrocyclization of Poly(phenylacetylene)s: Unwinding Helices to Elucidate their 3D Structure in Solution. Angew Chem Int Ed Engl 2021; 60:8095-8103. [PMID: 33332770 DOI: 10.1002/anie.202014780] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/03/2020] [Indexed: 12/16/2022]
Abstract
Photochemical electrocyclization of poly(phenylacetylene)s (PPAs) is used for the structural elucidation of a polyene backbone. This method not only allows classification of PPAs in cis-cisoidal (ω1 <90°) or cis-transoidal structures (ω1 >90°), but also approximating ω1 . A PPA solution is illuminated with visible light and monitoring the photochemical electrocyclization of the PPA helix by measuring the ECD spectra at different times. PPAs with a cis-cisoidal structure show a reduction of the ECD signal of at least 50 % before 30 min of irradiation, while cis-transoidal helices need much longer time because the transoidal bond must be isomerized. The different cis-cisoidal and cis-transoidal helices require different times to decrease their ECD signal by 50 % (t1/2 ), depending on the degree of compression or stretching of the helix, establishing a relationship between the secondary structure adopted by PPA (ω1 ) and the time required to lose the ECD vinylic signal by light irradiation.
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Affiliation(s)
- Francisco Rey-Tarrío
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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13
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Recent progress in conjugated microporous polymers for clean energy: Synthesis, modification, computer simulations, and applications. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101374] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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14
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Cobos K, Rodríguez R, Domarco O, Fernández B, Quiñoá E, Riguera R, Freire F. Polymeric Helical Structures à la Carte by Rational Design of Monomers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00085] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Katherine Cobos
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Olaya Domarco
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Berta Fernández
- Departamento de Química Física, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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Palomo L, Rodríguez R, Medina S, Quiñoá E, Casado J, Freire F, Ramírez FJ. Raman Optical Activity (ROA) as a New Tool to Elucidate the Helical Structure of Poly(phenylacetylene)s. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000651] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Luis Palomo
- Departamento de Química Física Facultad de Ciencias Universidad de Málaga Campus de Teatinos Málaga 29071 Spain
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materials Moleculares (CIQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela Santiago de Compostela 15782 Spain
| | - Samara Medina
- Departamento de Química Física Facultad de Ciencias Universidad de Málaga Campus de Teatinos Málaga 29071 Spain
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materials Moleculares (CIQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela Santiago de Compostela 15782 Spain
| | - Juan Casado
- Departamento de Química Física Facultad de Ciencias Universidad de Málaga Campus de Teatinos Málaga 29071 Spain
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materials Moleculares (CIQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela Santiago de Compostela 15782 Spain
| | - Francisco J. Ramírez
- Departamento de Química Física Facultad de Ciencias Universidad de Málaga Campus de Teatinos Málaga 29071 Spain
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16
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Palomo L, Rodríguez R, Medina S, Quiñoá E, Casado J, Freire F, Ramírez FJ. Raman Optical Activity (ROA) as a New Tool to Elucidate the Helical Structure of Poly(phenylacetylene)s. Angew Chem Int Ed Engl 2020; 59:9080-9087. [PMID: 32125060 DOI: 10.1002/anie.202000651] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/18/2020] [Indexed: 02/02/2023]
Abstract
Poly(phenylacetylene)s are a family of helical polymers constituted by conjugated double bonds. Raman spectra of these polymers show a structural fingerprint of the polyene backbone which, in combination with its helical orientation, makes them good candidates to be studied by Raman optical activity (ROA). Four different well-known poly(phenylacetylene)s adopting different scaffolds and ten different helical senses have been prepared. Raman and ROA spectra were recorded and allowed to establish ROA-spectrum/helical-sense relationships: a left/right-handed orientation of the polyene backbone (Mhelix /Phelix ) produces a triplet of positive/negative ROA bands. Raman and ROA spectra of each polymer exhibited the same profile, and the sign of the ROA spectrum was opposite to the lowest-energy electronic circular dichroism (ECD) band, indicating a resonance effect. Resonance ROA appears then as an indicator of the helical sense of poly(phenylacetylene)s, especially for those with an extra Cotton band in the ECD spectrum, where a wrong helical sense is assigned based on ECD, while ROA alerts of this misassignment.
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Affiliation(s)
- Luis Palomo
- Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, Málaga, 29071, Spain
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materials Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain
| | - Samara Medina
- Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, Málaga, 29071, Spain
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materials Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain
| | - Juan Casado
- Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, Málaga, 29071, Spain
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materials Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain
| | - Francisco J Ramírez
- Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, Málaga, 29071, Spain
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17
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Rodríguez R, Suárez‐Picado E, Quiñoá E, Riguera R, Freire F. A Stimuli‐Responsive Macromolecular Gear: Interlocking Dynamic Helical Polymers with Foldamers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915488] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Esteban Suárez‐Picado
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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18
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Rodríguez R, Suárez‐Picado E, Quiñoá E, Riguera R, Freire F. A Stimuli‐Responsive Macromolecular Gear: Interlocking Dynamic Helical Polymers with Foldamers. Angew Chem Int Ed Engl 2020; 59:8616-8622. [DOI: 10.1002/anie.201915488] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/07/2020] [Indexed: 01/11/2023]
Affiliation(s)
- Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Esteban Suárez‐Picado
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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19
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Suárez‐Picado E, Quiñoá E, Riguera R, Freire F. Chiral Overpass Induction in Dynamic Helical Polymers Bearing Pendant Groups with Two Chiral Centers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915213] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Esteban Suárez‐Picado
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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20
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Suárez-Picado E, Quiñoá E, Riguera R, Freire F. Chiral Overpass Induction in Dynamic Helical Polymers Bearing Pendant Groups with Two Chiral Centers. Angew Chem Int Ed Engl 2020; 59:4537-4543. [PMID: 31880378 DOI: 10.1002/anie.201915213] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Indexed: 12/16/2022]
Abstract
The dynamic behavior of helical polymers bearing pendant groups with two chiral centers was studied. Controlled conformational changes at the chiral units placed either closer to or further away from the main chain promote different helical structures. Although the first residue is usually responsible for determining a specific helicity (P or M), we now found that the second chiral center is also able to induce a preferred helical sense when it is located closer in space to the main chain, thereby cancelling the order from the first chiral moiety. This result was achieved through proper coordination with a metal cation. As proof of concept, poly(phenylacetylene)s (PPAs) that bear one and two chiral amino acid units of different sizes and configuration combinations (l/d-alanine and l/d-phenylalanine) as pendants were evaluated. In total, ten polymers were studied. This constitutes the first report of axial control from a remote stereocenter in polymers bearing complex chiral pendants.
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Affiliation(s)
- Esteban Suárez-Picado
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago, de Compostela, Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago, de Compostela, Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago, de Compostela, Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago, de Compostela, Spain
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21
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Bergueiro J, Núñez-Martínez M, Arias S, Quiñoá E, Riguera R, Freire F. Chiral gold-PPA nanocomposites with tunable helical sense and morphology. NANOSCALE HORIZONS 2020; 5:495-500. [PMID: 32118234 DOI: 10.1039/c9nh00659a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel type of stimuli-responsive dynamic helical polymer-metal nanoparticle nanocomposite formed by a helical poly(phenylacetylene) (PPA) combined with gold nanoparticles (AuNPs) is described. Thus, several PPA copolymers containing the ethynyl-4-benzamide of (S)-phenylglycine methyl ester (M1) to dictate the helical structure/sense of the copolymer, and the ethynyl-4-benzamide of the 11-((2-(2-(2-aminoethoxy)ethoxy)ethyl)amino)undecane-1-thiol (M2) to link the copolymer to the AuNPs are prepared. Different morphologies of these nanocomposites were obtained by considering the thiol ratio and the self-assembly properties of the PPA, which generates from dispersed AuNPs to fibre-like structures. All these nanocomposites show a dynamic chiral behaviour, it being possible to manipulate their helical sense by the action of external stimuli. Moreover, it is possible to control the aggregation of these nanocomposites into macroscopically chiral nanospheres with low polydispersity by using Ba2+ as a crosslinking agent.
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Affiliation(s)
- Julián Bergueiro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Manuel Núñez-Martínez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Sandra Arias
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Ricardo Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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22
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Alzubi M, Arias S, Rodríguez R, Quiñoá E, Riguera R, Freire F. Chiral Conflict as a Method to Create Stimuli‐Responsive Materials Based on Dynamic Helical Polymers. Angew Chem Int Ed Engl 2019; 58:13365-13369. [DOI: 10.1002/anie.201907069] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/06/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Mohammad Alzubi
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Sandra Arias
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
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23
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Alzubi M, Arias S, Rodríguez R, Quiñoá E, Riguera R, Freire F. Chiral Conflict as a Method to Create Stimuli‐Responsive Materials Based on Dynamic Helical Polymers. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907069] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohammad Alzubi
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Sandra Arias
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química OrgánicaUniversidade de Santiago de Compostela E-15782 Santiago de Compostela Spain
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24
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Rodríguez R, Quiñoá E, Riguera R, Freire F. Stimuli-Directed Colorimetric Interconversion of Helical Polymers Accompanied by a Tunable Self-Assembly Process. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1805413. [PMID: 30786148 DOI: 10.1002/smll.201805413] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/23/2019] [Indexed: 06/09/2023]
Abstract
Interconversion between extended and bent structures at the pendant groups of a chiral polyene framework [poly(phenylacetylene) with (R)-(2-methoxy-2-phenylacetyl)glycine residues linked to 4-vinylanilines] allows the reversible colorimetric transformation from stretched to compressed helical cis-transoid polyenic structures through manipulation of the flexible spacer. This transformation generates either organogels (stretched helical form) or nanoparticles (compressed helical form) under the control of polar/low polar stimuli respectively and opens the way to the development of new sensors and stimuli-sensitive materials based on these concepts.
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Affiliation(s)
- Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782, Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782, Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782, Santiago de Compostela, Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782, Santiago de Compostela, Spain
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