101
|
Ikai T, Minami S, Awata S, Shimizu S, Yoshida T, Okubo M, Shinohara KI. Helicity control of π-conjugated foldamers containing d-glucose-based single enantiomeric units as a chiral source. Polym Chem 2018. [DOI: 10.1039/c8py01436a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We have succeeded in the helicity control of polymer backbones and their circularly polarized luminescence without the need for chirality of an unnatural antipode, l-glucose.
Collapse
Affiliation(s)
- Tomoyuki Ikai
- Graduate School of Natural Science and Technology
- Kanazawa University
- Japan
| | - Serena Minami
- Graduate School of Natural Science and Technology
- Kanazawa University
- Japan
| | - Seiya Awata
- Graduate School of Natural Science and Technology
- Kanazawa University
- Japan
| | - Sho Shimizu
- Graduate School of Natural Science and Technology
- Kanazawa University
- Japan
| | - Takumu Yoshida
- Graduate School of Natural Science and Technology
- Kanazawa University
- Japan
| | - Mitsuhiro Okubo
- Graduate School of Natural Science and Technology
- Kanazawa University
- Japan
| | - Ken-ichi Shinohara
- School of Materials Science
- Japan Advanced Institute of Science and Technology (JAIST)
- Nomi 923-1292
- Japan
| |
Collapse
|
102
|
Li R, Dai J, Liu L, Wang J, Wang P, Li Y, Zhou D, Han Y. Supramolecular chirality control via self-assembly of oligoaniline in the chemical oxidative polymerization process. NEW J CHEM 2018. [DOI: 10.1039/c8nj02678e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chirality control of PANI nanofibers is achieved by selecting the oligomeric species and changing the concentration of CSA and solvents.
Collapse
Affiliation(s)
- Ruiqi Li
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| | - Jijin Dai
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| | - Lijia Liu
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| | - Jingfeng Wang
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| | - Pengli Wang
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| | - Yufa Li
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| | - Dan Zhou
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| | - Yushan Han
- Institute of Advanced Marine Materials
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Materials Science and Chemical Engineering
- Harbin Engineering University
- China
| |
Collapse
|
103
|
Synthesis of core cross-linked star polymers carrying helical poly(phenyl isocyanide) arms via “core-first” strategy and their surface chiral recognition ability. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.057] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
104
|
Yan X, Zhang S, Peng D, Zhang P, Zhi J, Wu X, Wang L, Dong Y, Li X. Cationic half-sandwich rare-earth metal alkyl species catalyzed polymerization and copolymerization of aryl isocyanides possessing polar, bulky, or chiral substituents. Polym Chem 2018. [DOI: 10.1039/c8py00007g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cationic half-sandwich rare-earth metal alkyl species were first used for the coordination–insertion polymerization and copolymerization of aryl isocyanides.
Collapse
Affiliation(s)
- Xinwen Yan
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Shaowen Zhang
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Deqian Peng
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Pengfei Zhang
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Junge Zhi
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Xiaolu Wu
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Lin Wang
- School of Mechatronical Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Yuping Dong
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science and Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Xiaofang Li
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| |
Collapse
|
105
|
Fernández A, Ruiz-Bermejo M, de la Fuente JL. Modelling the kinetics and structural property evolution of a versatile reaction: aqueous HCN polymerization. Phys Chem Chem Phys 2018; 20:17353-17366. [DOI: 10.1039/c8cp01662c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The structural characterization and kinetics of HCN polymers were studied and the Kamal autocatalytic model can describe this aqueous precipitation polymerization.
Collapse
Affiliation(s)
- Amparo Fernández
- Centro de Astrobiología (INTA-CSIC)
- Dpto. Evolución Molecular
- 28850 Madrid
- Spain
| | - Marta Ruiz-Bermejo
- Centro de Astrobiología (INTA-CSIC)
- Dpto. Evolución Molecular
- 28850 Madrid
- Spain
| | - José L. de la Fuente
- Instituto Nacional de Técnica Aeroespacial “Esteban Terradas” (INTA)
- 28850 Madrid
- Spain
| |
Collapse
|
106
|
Chen J, Li B, Li X, Zhang J, Wan X. Gradient helical copolymers: synthesis, chiroptical properties, thermotropic liquid crystallinity, and self-assembly in selective organic solvents. Polym Chem 2018. [DOI: 10.1039/c8py00237a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel gradient copolymers R-(−)-poly(StN-grad-C8) were synthesized through atom transfer radical copolymerization of an achiral styrenic monomer, N,N-dimethyl-4-ethenylbenzamide (M-StN), and a chiral bulky vinylterphenyl monomer, (−)-2,5-bis{4′-[(R)-sec-octyloxycarbonyl]phenyl}styrene (R-(−)-M-C8).
Collapse
Affiliation(s)
- Junxian Chen
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Bowen Li
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Xiaofu Li
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Jie Zhang
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| |
Collapse
|
107
|
Yuan H, Xu J, van Dam EP, Giubertoni G, Rezus YLA, Hammink R, Bakker HJ, Zhan Y, Rowan AE, Xing C, Kouwer PHJ. Strategies To Increase the Thermal Stability of Truly Biomimetic Hydrogels: Combining Hydrophobicity and Directed Hydrogen Bonding. Macromolecules 2017; 50:9058-9065. [PMID: 29213150 PMCID: PMC5707627 DOI: 10.1021/acs.macromol.7b01832] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/08/2017] [Indexed: 01/29/2023]
Abstract
Enhancing the thermal stability of proteins is an important task for protein engineering. There are several ways to increase the thermal stability of proteins in biology, such as greater hydrophobic interactions, increased helical content, decreased occurrence of thermolabile residues, or stable hydrogen bonds. Here, we describe a well-defined polymer based on β-helical polyisocyanotripeptides (TriPIC) that uses biological approaches, including hydrogen bonding and hydrophobic interactions for its exceptional thermal stability in aqueous solutions. The multiple hydrogen bonding arrays along the polymer backbone shield the hydrophobic core from water. Variable temperature CD and FTIR studies indicate that, on heating, a better packed polymer conformation further stiffens the backbone. Driven by hydrophobic interactions, TriPIC solutions give fully reversible hydrogels that can withstand high temperatures (80 °C) for extended times. Cryo-scanning electron microscopy (cryo-SEM), small-angle X-ray scattering (SAXS), and thorough rheological analysis show that the hydrogel has a bundled architecture, which gives rise to strain stiffening effects on deformation of the gel, analogous to many biological hydrogels.
Collapse
Affiliation(s)
- Hongbo Yuan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P. R. China.,Institute for Molecules and Materials (IMM), Radboud University, Heyendaalseweg 135, 6525AJ Nijmegen, The Netherlands
| | - Jialiang Xu
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, P. R. China.,Institute for Molecules and Materials (IMM), Radboud University, Heyendaalseweg 135, 6525AJ Nijmegen, The Netherlands
| | | | | | - Yves L A Rezus
- AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Roel Hammink
- Institute for Molecules and Materials (IMM), Radboud University, Heyendaalseweg 135, 6525AJ Nijmegen, The Netherlands
| | - Huib J Bakker
- AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Yong Zhan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Alan E Rowan
- Institute for Molecules and Materials (IMM), Radboud University, Heyendaalseweg 135, 6525AJ Nijmegen, The Netherlands.,Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Chengfen Xing
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Paul H J Kouwer
- Institute for Molecules and Materials (IMM), Radboud University, Heyendaalseweg 135, 6525AJ Nijmegen, The Netherlands
| |
Collapse
|
108
|
Optically active helical polyisocyanides bearing chiral phosphine pendants: Facile synthesis and application in enantioselective Rauhut-Currier reaction. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-018-2044-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
109
|
Maeda K, Shimomura K, Ikai T, Kanoh S, Yashima E. Static Memory of Enantiomeric Helices Induced in a Poly(biphenylylacetylene) by a Single Enantiomer Assisted by Temperature- and Solvent-Driven Helix Inversion. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01955] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Katsuhiro Maeda
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kouhei Shimomura
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Tomoyuki Ikai
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Shigeyoshi Kanoh
- Graduate
School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Eiji Yashima
- Department
of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| |
Collapse
|
110
|
Hammink R, Eggermont LJ, Zisis T, Tel J, Figdor CG, Rowan AE, Blank KG. Affinity-Based Purification of Polyisocyanopeptide Bioconjugates. Bioconjug Chem 2017; 28:2560-2568. [PMID: 28846388 DOI: 10.1021/acs.bioconjchem.7b00398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Water-soluble polyisocyanopeptides (PICs) are a new class of synthetic polymers that mimic natural protein-based filaments. Their unique semiflexible properties combined with a length of several hundred nanometers have recently enabled a number of biomedical applications ranging from tissue engineering to cancer immunotherapy. One crucial step toward the further development of PICs for these applications is the efficient and controlled synthesis and purification of PIC-biomolecule conjugates. Considering the large size of PICs and the biomolecules to be conjugated, conjugation reactions do usually not proceed to completion due to steric effects. As a consequence, purification of the reaction mixture is necessary to separate the obtained bioconjugates from unreacted biomolecules. As a direct result of the semiflexible nature of PICs, standard polymer and protein purification methods based on molecular weight have not been successful. Here, we introduce a new affinity-based purification method utilizing biotin as an affinity tag. PICs decorated with a controlled and tunable density of biotin molecules (biotinPICs) were efficiently bound to and eluted from a monoavidin resin in buffered aqueous solution. Using these biotinPICs, two different protein conjugates were synthesized, one carrying the enzyme alkaline phosphatase (PhoA) and the other T-cell activating anti-CD3 antibodies. The resulting biotinPIC-protein conjugates were successfully obtained in high purity (>90%) and without any loss of protein activity. The high purity greatly simplifies the analysis of biotinPIC bioconjugates, such as the determination of the average number of biomolecules conjugated per biotinPIC chain. Most importantly, it allows for the direct and straightforward application of the obtained bioconjugates in the desired applications. The new method developed may further be adapted for the purification of other advanced bioconjugates that are difficult to obtain in high purity with the available standard methods.
Collapse
Affiliation(s)
- Roel Hammink
- Department of Molecular Materials, Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.,Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Loek J Eggermont
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Themistoklis Zisis
- Department of Molecular Materials, Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Jurjen Tel
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands.,Department of Biomedical Engineering and Institute for Complex Molecular Systems, Laboratory of Immunoengineering, Eindhoven University of Technology , De Zaale 15, 5612 AP Eindhoven, The Netherlands
| | - Carl G Figdor
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Alan E Rowan
- Department of Molecular Materials, Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Kerstin G Blank
- Department of Molecular Materials, Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.,Mechano(bio)chemistry, Max Planck Institute of Colloids and Interfaces , Potsdam-Golm Science Park, 14424 Potsdam, Germany
| |
Collapse
|
111
|
Freire F, Quiñoá E, Riguera R. Chiral nanostructure in polymers under different deposition conditions observed using atomic force microscopy of monolayers: poly(phenylacetylene)s as a case study. Chem Commun (Camb) 2017; 53:481-492. [PMID: 27827473 DOI: 10.1039/c6cc05598b] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Dynamic poly(phenylacetylene)s (PPAs) adopt helical structures with different elongation or helical senses depending on the types of pendants. Hence, a good knowledge of the parameters that define their structures becomes a key factor in the understanding of their properties and functions. Herein, the techniques used for the study of the secondary structure of PPAs using atomic-force microscopy (AFM) are presented, with special attention directed towards the methods used for the preparation of monolayers, and their consequences in the quality of the AFM images. Thus, monolayers formed by drop casting, spin coating followed by crystallization or annealing, Langmuir-Blodgett and Langmuir-Schaefer methods, onto highly oriented pyrolytic graphite (HOPG) or mica, are described, together with the AFM images and the resulting helical structure obtained for different PPAs. Furthermore, some conclusions are drawn both on the adequacy of the different techniques for the formation of monolayers and on the solid supports utilized to elucidate the secondary structure of different PPAs.
Collapse
Affiliation(s)
- F 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.
| | - E 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.
| | - R 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.
| |
Collapse
|
112
|
Maeda K, Yashima E. Helical Polyacetylenes Induced via Noncovalent Chiral Interactions and Their Applications as Chiral Materials. Top Curr Chem (Cham) 2017; 375:72. [PMID: 28730394 PMCID: PMC5519648 DOI: 10.1007/s41061-017-0161-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 07/11/2017] [Indexed: 12/12/2022]
Abstract
Construction of predominantly one-handed helical polyacetylenes with a desired helix sense utilizing noncovalent chiral interactions with nonracemic chiral guest compounds based on a supramolecular approach is described. As with the conventional dynamic helical polymers possessing optically active pendant groups covalently bonded to the polymer chains, this noncovalent helicity induction system can show significant chiral amplification phenomena, in which the chiral information of the nonracemic guests can transfer with high cooperativity through noncovalent bonding interactions to induce an almost single-handed helical conformation in the polymer backbone. An intriguing "memory effect" of the induced macromolecular helicity is observed for some polyacetylenes, which means that the helical conformations induced in dynamic helical polyacetylene can be transformed into metastable static ones by tuning their helix-inversion barriers. Potential applications of helical polyacetylenes with controlled helix sense constructed by the "noncovalent helicity induction and/or memory effect" as chiral materials are also described.
Collapse
Affiliation(s)
- Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan.
| |
Collapse
|
113
|
Zhou L, Chu BF, Xu XY, Xu L, Liu N, Wu ZQ. Significant Improvement on Enantioselectivity and Diastereoselectivity of Organocatalyzed Asymmetric Aldol Reaction Using Helical Polyisocyanides Bearing Proline Pendants. ACS Macro Lett 2017. [DOI: 10.1021/acsmacrolett.7b00439] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Li Zhou
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, Anhui Province, China
| | - Ben-Fa Chu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, Anhui Province, China
| | - Xin-Yu Xu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, Anhui Province, China
| | - Lei Xu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, Anhui Province, China
| | - Na Liu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, Anhui Province, China
| | - Zong-Quan Wu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei 230009, Anhui Province, China
| |
Collapse
|
114
|
Yu ZP, Liu N, Yang L, Jiang ZQ, Wu ZQ. One-Pot Synthesis, Stimuli Responsiveness, and White-Light Emissions of Sequence-Defined ABC Triblock Copolymers Containing Polythiophene, Polyallene, and Poly(phenyl isocyanide) Blocks. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02558] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Zhi-Peng Yu
- Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, and Anhui Key Laboratory
of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui Province 230009, China
| | - Na Liu
- Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, and Anhui Key Laboratory
of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui Province 230009, China
| | - Li Yang
- Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, and Anhui Key Laboratory
of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui Province 230009, China
| | - Zhi-Qiang Jiang
- Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, and Anhui Key Laboratory
of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui Province 230009, China
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, and Anhui Key Laboratory
of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui Province 230009, China
| |
Collapse
|
115
|
Deike S, Binder WH. Induction of Chirality in β-Turn Mimetic Polymer Conjugates via Postpolymerization “Click” Coupling. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00343] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stefanie Deike
- Institute of Chemistry, Chair
of Macromolecular Chemistry, Faculty of Natural Sciences II, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Wolfgang H. Binder
- Institute of Chemistry, Chair
of Macromolecular Chemistry, Faculty of Natural Sciences II, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| |
Collapse
|
116
|
Liu N, Ma CH, Sun RW, Huang J, Li C, Wu ZQ. Facile synthesis and chiral recognition of block and star copolymers containing stereoregular helical poly(phenyl isocyanide) and polyethylene glycol blocks. Polym Chem 2017. [DOI: 10.1039/c7py00028f] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A new Pd(ii) initiator bearing an alkyne headgroup was designed and synthesized.
Collapse
Affiliation(s)
- Na Liu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- China
| | - Cui-Hong Ma
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- China
| | - Rui-Wen Sun
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- China
| | - Jian Huang
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- China
| | - Chonglong Li
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- China
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei 230009
- China
| |
Collapse
|
117
|
FUJIKI M. Creation and Controlling Asymmetric Small Molecules, Polymers, Colloids, and Small Objects Endowed with Polarized Light and Spin Polarized Particles. KOBUNSHI RONBUNSHU 2017. [DOI: 10.1295/koron.2016-0059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michiya FUJIKI
- Graduate School of Materials Science, Nara Institute of Science and Technology
| |
Collapse
|
118
|
Arias S, Núñez-Martínez M, Quiñoá E, Riguera R, Freire F. Simultaneous Adjustment of Size and Helical Sense of Chiral Nanospheres and Nanotubes Derived from an Axially Racemic Poly(phenylacetylene). SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1602398. [PMID: 27758030 DOI: 10.1002/smll.201602398] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 09/22/2016] [Indexed: 05/26/2023]
Abstract
Nanospheres and nanotubes with full control of their size and helical sense are obtained in chloroform from the axially racemic chiral poly(phenylacetylene) poly-(R)-1 using either Ag+ as both chiral inducer and cross-linking agent or Na+ as chiral inducer and Ag+ as cross-linking agent. The size is tuned by the polymer/ion ratio while the helical sense is modulated by the polymer/cosolvent (i.e., MeCN) ratio. In this way, the helicity and the size of the nanoparticles can be easily interconverted by very simple experimental changes.
Collapse
Affiliation(s)
- 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
| | - 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
| | - 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
| |
Collapse
|
119
|
Yin J, Xu L, Han X, Zhou L, Li C, Wu ZQ. A facile synthetic route to stereoregular helical poly(phenyl isocyanide)s with defined pendants and controlled helicity. Polym Chem 2017. [DOI: 10.1039/c6py01881e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile synthetic route to stereoregular helical poly(phenyl isocyanide)s with not only defined pendants but also with controlled helicity was developed.
Collapse
Affiliation(s)
- Jun Yin
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
| | - Lei Xu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
| | - Xin Han
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
| | - Li Zhou
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
| | - Chonglong Li
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei University of Technology
- Hefei
| |
Collapse
|
120
|
Alzubi M, Arias S, Louzao I, Quiñoá E, Riguera R, Freire F. Multipodal dynamic coordination involving cation–π interactions to control the structure of helical polymers. Chem Commun (Camb) 2017; 53:8573-8576. [DOI: 10.1039/c7cc04220e] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Dynamic coordination, by means of multipodal metal complexes and cation–π interactions, controls the structure of helical polymers.
Collapse
Affiliation(s)
- Mohammad Alzubi
- 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
| | - Iria Louzao
- 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
| |
Collapse
|
121
|
Synthesis and chiroptical properties of novel helical polyacetylenes containing fluorene pendant groups in the side chains. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
122
|
Temperature-Triggered Switchable Helix-Helix Inversion of Poly(phenylacetylene) Bearing l-Valine Ethyl Ester Pendants and Its Chiral Recognition Ability. Molecules 2016; 21:molecules21111583. [PMID: 27879637 PMCID: PMC6273589 DOI: 10.3390/molecules21111583] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 11/15/2016] [Accepted: 11/16/2016] [Indexed: 11/30/2022] Open
Abstract
A phenylacetylene containing the l-valine ethyl ester pendant (PAA-Val) was synthesized and polymerized by an organorhodium catalyst (Rh(nbd)BPh4) to produce the corresponding one-handed helical cis-poly(phenylacetylene) (PPAA-Val). PPAA-Val showed a unique temperature-triggered switchable helix-sense in chloroform, while it was not observed in highly polar solvents, such as N,N′-dimethylformamide (DMF). By heating the solution of PPAA-Val in chloroform, the sign of the CD absorption became reversed, but recovered after cooling the solution to room temperature. Even after six cycles of the heating-cooling treatment, the helix sense of the PPAA-Val’s backbone was still switchable without loss of the CD intensity. The PPAA-Val was then coated on silica gel particles to produce novel chiral stationary phases (CSPs) for high-performance liquid chromatography (HPLC). These novel PPAA-Val based CSPs showed a high chiral recognition ability for racemic mandelonitrile (α = 2.18) and racemic trans-N,N′-diphenylcyclohexane-1,2-dicarboxamide (α = 2.60). Additionally, the one-handed helical cis-polyene backbone of PPAA-Val was irreversibly destroyed to afford PPAA-Val-H by heating in dimethyl sulfoxide (DMSO) accompanied by the complete disappearance of the Cotton effect. Although PPAA-Val-H had the same l-valine ethyl ester pendants as its cis-isomer PPAA-Val, it showed no chiral recognition. It was concluded that the one-handed helical cis-polyene backbone of PPAA-Val plays an important role in the chiral recognition ability.
Collapse
|
123
|
Yashima E, Ousaka N, Taura D, Shimomura K, Ikai T, Maeda K. Supramolecular Helical Systems: Helical Assemblies of Small Molecules, Foldamers, and Polymers with Chiral Amplification and Their Functions. Chem Rev 2016; 116:13752-13990. [PMID: 27754649 DOI: 10.1021/acs.chemrev.6b00354] [Citation(s) in RCA: 1198] [Impact Index Per Article: 149.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this review, we describe the recent advances in supramolecular helical assemblies formed from chiral and achiral small molecules, oligomers (foldamers), and helical and nonhelical polymers from the viewpoints of their formations with unique chiral phenomena, such as amplification of chirality during the dynamic helically assembled processes, properties, and specific functionalities, some of which have not been observed in or achieved by biological systems. In addition, a brief historical overview of the helical assemblies of small molecules and remarkable progress in the synthesis of single-stranded and multistranded helical foldamers and polymers, their properties, structures, and functions, mainly since 2009, will also be described.
Collapse
Affiliation(s)
- Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Daisuke Taura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Kouhei Shimomura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Tomoyuki Ikai
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| |
Collapse
|
124
|
Yang L, Tang Y, Liu N, Liu CH, Ding Y, Wu ZQ. Facile Synthesis of Hybrid Silica Nanoparticles Grafted with Helical Poly(phenyl isocyanide)s and Their Enantioselective Crystallization Ability. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01870] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Li Yang
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Yang Tang
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Na Liu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Chun-Hua Liu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Yunsheng Ding
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Zong-Quan Wu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| |
Collapse
|
125
|
Huang YQ, Zhong YY, Zhang R, Zhao YK, Liu XF, Zhang GW, Fan QL, Wang LH, Huang W. Tuning the backbones and side chains of cationic meta-linked poly(phenylene ethynylene)s: Different conformational modes, tunable light emission, and helical wrapping of multi-walled carbon nanotubes. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
126
|
Affiliation(s)
- Anna Croom
- Molecular Design Institute
and Department of Chemistry, New York University, New York, New York 10003, United States
| | - Kylie B. Manning
- Molecular Design Institute
and Department of Chemistry, New York University, New York, New York 10003, United States
| | - Marcus Weck
- Molecular Design Institute
and Department of Chemistry, New York University, New York, New York 10003, United States
| |
Collapse
|
127
|
Kan K, Fujiki M, Akashi M, Ajiro H. Near-Ultraviolet Circular Dichroism of Achiral Phenolic Termini Induced by Nonchromophoric Poly(l,l-lactide) and Poly(d,d-lactide). ACS Macro Lett 2016; 5:1014-1018. [PMID: 35614637 DOI: 10.1021/acsmacrolett.6b00513] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Herein, we present the first induced chirality of vanillin and its phenolic analogs attached to the chain ends of poly(l,l-lactide) and poly(d,d-lactide). Vanillin analogs were used as chromophoric and luminophoric, but achiral, ring-opening initiators of corresponding chiral cyclic lactides. Induced chirality was evident from clear circular dichroism bands at 270-320 nm due to π-π* and n-π* transitions at the vanillin moiety. However, no circularly polarized luminescence band was detected. Density functional theory (DFT) and time-dependent DFT calculations suggested the existence of multiple through-space intramolecular CH/O interactions between the ortho-methoxy moiety of vanillin and nearest-neighbor lactic acid units. The terminus sensitively indicated whether the main-chain chirality was l or d.
Collapse
Affiliation(s)
| | | | - Mitsuru Akashi
- Graduate
School of Frontier Biosciences, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
| | - Hiroharu Ajiro
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
128
|
Rodríguez R, Quiñoá E, Riguera R, Freire F. Architecture of Chiral Poly(phenylacetylene)s: From Compressed/Highly Dynamic to Stretched/Quasi-Static Helices. J Am Chem Soc 2016; 138:9620-8. [DOI: 10.1021/jacs.6b04834] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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
| | - 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
| |
Collapse
|
129
|
Polymorphism and electronic structure of polyimine and its potential significance for prebiotic chemistry on Titan. Proc Natl Acad Sci U S A 2016; 113:8121-6. [PMID: 27382167 DOI: 10.1073/pnas.1606634113] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The chemistry of hydrogen cyanide (HCN) is believed to be central to the origin of life question. Contradictions between Cassini-Huygens mission measurements of the atmosphere and the surface of Saturn's moon Titan suggest that HCN-based polymers may have formed on the surface from products of atmospheric chemistry. This makes Titan a valuable "natural laboratory" for exploring potential nonterrestrial forms of prebiotic chemistry. We have used theoretical calculations to investigate the chain conformations of polyimine (pI), a polymer identified as one major component of polymerized HCN in laboratory experiments. Thanks to its flexible backbone, the polymer can exist in several different polymorphs, which are relatively close in energy. The electronic and structural variability among them is extraordinary. The band gap changes over a 3-eV range when moving from a planar sheet-like structure to increasingly coiled conformations. The primary photon absorption is predicted to occur in a window of relative transparency in Titan's atmosphere, indicating that pI could be photochemically active and drive chemistry on the surface. The thermodynamics for adding and removing HCN from pI under Titan conditions suggests that such dynamics is plausible, provided that catalysis or photochemistry is available to sufficiently lower reaction barriers. We speculate that the directionality of pI's intermolecular and intramolecular =N-H(…)N hydrogen bonds may drive the formation of partially ordered structures, some of which may synergize with photon absorption and act catalytically. Future detailed studies on proposed mechanisms and the solubility and density of the polymers will aid in the design of future missions to Titan.
Collapse
|
130
|
Taura D, Hioki S, Tanabe J, Ousaka N, Yashima E. Cobalt(II)-Salen-Linked Complementary Double-Stranded Helical Catalysts for Asymmetric Nitro-Aldol Reaction. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01627] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daisuke Taura
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Shogo Hioki
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Junki Tanabe
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Eiji Yashima
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| |
Collapse
|
131
|
Zhang P, Zhang L, Wang ZK, Zhang YC, Guo R, Wang H, Zhang DW, Li ZT. Guest-Induced Arylamide Polymer Helicity: Twist-Sense Bias and Solvent-Dependent Helicity Inversion. Chem Asian J 2016; 11:1725-30. [DOI: 10.1002/asia.201600289] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Indexed: 01/07/2023]
Affiliation(s)
- Peng Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Liang Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Ze-Kun Wang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Yun-Chang Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Rong Guo
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Hui Wang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Dan-Wei Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Zhan-Ting Li
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| |
Collapse
|
132
|
Zinkevich T, Venderbosch B, Jaspers M, Kouwer PHJ, Rowan AE, van Eck ERH, Kentgens APM. Solid-state NMR characterization of tri-ethyleneglycol grafted polyisocyanopeptides. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:328-333. [PMID: 26559660 DOI: 10.1002/mrc.4379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 09/30/2015] [Accepted: 10/09/2015] [Indexed: 06/05/2023]
Abstract
In aqueous media, ethylene glycol substituted polyisocyanopeptides (PICPs) change their state (undergo a sol-to-gel transition) as a response to temperature. This makes them promising materials for various biomedical applications, for instance, for controlled drug release and non-damaging wound dressing. To utilize PICP in biomedical applications, understanding of the origin of the gelation process is needed, but this is experimentally difficult because of the notoriously low gelator concentration in combination with the slow polymer dynamics in the sample. This paper describes a detailed characterization of the dried state of PICPs by solid-state NMR measurements. Both the (13) C and the (1) H NMR resonances were assigned using a combination of 1D cross-polarization magic angle spinning, 2D (13) C-(1) H heteronuclear correlation spectra and (1) H-(1) H single quantum-double quantum experiments. In addition, the chemical groups involved in dipolar interaction with each other were used to discuss the dynamics and spatial conformation of the polymer. In contrast to other PICP polymers, two resonances for the backbone carbon are observed, which are present in equal amounts. The possible origin of these resonances is discussed in the last section of this work. The data obtained during the current studies will be further used in elucidating mechanisms of the bundling and gelation. A comprehensive picture will make it possible to tailor polymer properties to meet specific needs in different applications. Copyright © 2015 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- T Zinkevich
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - B Venderbosch
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - M Jaspers
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - P H J Kouwer
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - A E Rowan
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - E R H van Eck
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - A P M Kentgens
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg 135, 6525 AJ, Nijmegen, The Netherlands
| |
Collapse
|
133
|
Rodríguez R, Ignés-Mullol J, Sagués F, Quiñoá E, Riguera R, Freire F. Helical sense selective domains and enantiomeric superhelices generated by Langmuir-Schaefer deposition of an axially racemic chiral helical polymer. NANOSCALE 2016; 8:3362-3367. [PMID: 26791332 DOI: 10.1039/c5nr07990j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The chiral polymer poly-(R)-1 behaves in solution, despite its chiral pendants, as a dynamic axially racemic (i.e., 1 : 1) mixture of left- and right-handed helices, but its deposition on graphite by a Langmuir-Schaefer (LS) technique leads to a helical sense-selective packing that forms separate enantiomeric domains of left- and right-handed helical chains observed by high resolution atomic force microscopy (AFM). The polymer structure within these domains is very uniform, seldom altered by the presence of reversals, grouped always in contiguous pairs maintaining a single helical sense along the polymer chain. The LS deposition technique has been shown to be crucial to obtain good quality monolayers from poly-(R)-1 and other poly(phenylacetylene)s (PPAs: poly-2, poly-3 and poly-4) with short pendants, where spin coating, drop casting and Langmuir-Blodgett (LB) failed, and suggests that this technique could be the method of choice for the preparation of 2D monolayers for high resolution AFM studies of PPAs with short pendants. Key helical parameters (i.e., sense, pitch, packing angle) are easily measured in this way.
Collapse
Affiliation(s)
- R Rodríguez
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | | | | | | | | | | |
Collapse
|
134
|
Internal C-C Bond Rotation in Photoisomers of α-Bisimines: a Light-Responsive Two-Step Molecular Speed Regulator Based on Double Imine Photoswitching. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600113] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
135
|
Arias S, Bergueiro J, Freire F, Quiñoá E, Riguera R. Chiral Nanostructures from Helical Copolymer-Metal Complexes: Tunable Cation-π Interactions and Sergeants and Soldiers Effect. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:238-244. [PMID: 26578292 DOI: 10.1002/smll.201502276] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/13/2015] [Indexed: 06/05/2023]
Abstract
Poly(phenylacetylene) (PPA) copolymers containing (R)- or (S)-MPA as minor chiral pendant can be forced to selectively adopt the right- o left-handed helix, in the presence of small amounts of Na(+) or Ag(+) ("Sergeants and Soldiers Effect") by addition of a donor cosolvent. The helical sense depends exclusively on the chiral monomer/donor cosolvent ratio, and this allows a perfect on/off tuning of the helicity of the copolymer. When the amount of the donor cosolvent is low, the metal ion complex is stabilized by a cation-π interaction, which is selectively cleaved when the amount of cosolvent is higher. Macroscopically chiral nanospheres and nanotubes composed by helical copolymers with P or M helical sense are also described. Our results demonstrate that it is possible to obtain the two enantiomeric helical structures (P and M helicities) and the corresponding nanospheres and nanotubes from a single helical copolymer, by controlled activation/deactivation of the Sergeant and Soldiers Effect with a donor cosolvent.
Collapse
Affiliation(s)
- Sandra Arias
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Julián Bergueiro
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Félix Freire
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| |
Collapse
|
136
|
Liu C, Mi YX, Wang RH, Jiang ZQ, Zhang XY, Liu N, Yin J, Wu ZQ. Facile synthesis of well-defined ABC miktoarm star terpolymers bearing poly(ε-caprolactone), polystyrene and stereoregular helical poly(phenyl isocyanide) blocks. Polym Chem 2016. [DOI: 10.1039/c6py00220j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel method for the synthesis of ABC miktoarm star terpolymers bearing poly(ε-caprolactone), polystyrene and helical poly(phenyl isocyanide) blocks has been developed.
Collapse
Affiliation(s)
- Chunhua Liu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| | - Yan-Xin Mi
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| | - Rong-Hua Wang
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| | - Zhi-Qiang Jiang
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| | - Xiao-Yan Zhang
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| | - Na Liu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| | - Jun Yin
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Materials and Devices
- Hefei University of Technology
- Hefei 230009
| |
Collapse
|
137
|
Liu L, Ousaka N, Horie M, Mamiya F, Yashima E. Helix–helix inversion of an optically-inactive π-conjugated foldamer triggered by concentration changes of a single enantiomeric guest leading to a change in the helical stability. Chem Commun (Camb) 2016; 52:11752-11755. [DOI: 10.1039/c6cc05753e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An optically-inactive foldamer undergoes helicity induction and subsequent helix-inversion with the increasing amount of a single enantiomeric guest.
Collapse
Affiliation(s)
- Lijia Liu
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
| | - Naoki Ousaka
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
| | - Miki Horie
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
| | - Fumihiko Mamiya
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
| | - Eiji Yashima
- Department of Molecular Design and Engineering
- Graduate School of Engineering
- Nagoya University
- Chikusa-ku
- Japan
| |
Collapse
|
138
|
Zhao C, Ouyang K, Zhang J, Yang N. Synthesis and properties of optically active helical polymers from (S)-3-functional-3′-vinyl-BINOL derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra08146k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Helical vinyl polymers bearing N-heterocycles substituent BINOL derivatives were synthesized. The specific optical rotation and circular dichroism spectra data show the obtained polymers can keep a prevailing helicity of backbone in solution.
Collapse
Affiliation(s)
- Chunhui Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Kunbing Ouyang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Jin Zhang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Nianfa Yang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| |
Collapse
|
139
|
Ikai T, Wada Y, Takagi Y, Shinohara KI. Impact of a minority enantiomer on the polymerization of alanine-based isocyanides with an oligothiophene pendant. Polym Chem 2016. [DOI: 10.1039/c6py01351a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A synthetic polymer requiring a long-range homochiral sequence (>50 repeating units) to fold into a helical conformation has been prepared.
Collapse
Affiliation(s)
- Tomoyuki Ikai
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Yuya Wada
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Yugaku Takagi
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Ken-ichi Shinohara
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi 923-1292
- Japan
| |
Collapse
|
140
|
Su M, Liu N, Wang Q, Wang H, Yin J, Wu ZQ. Facile Synthesis of Poly(phenyleneethynylene)-block-Polyisocyanide Copolymers via Two Mechanistically Distinct, Sequential Living Polymerizations Using a Single Catalyst. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02555] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ming Su
- Department of Polymer Science and Engineering, School
of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei, Anhui Province 230009, China
| | - Na Liu
- Department of Polymer Science and Engineering, School
of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei, Anhui Province 230009, China
| | - Qian Wang
- Department of Polymer Science and Engineering, School
of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei, Anhui Province 230009, China
| | - Huiqing Wang
- Department of Polymer Science and Engineering, School
of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei, Anhui Province 230009, China
| | - Jun Yin
- Department of Polymer Science and Engineering, School
of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei, Anhui Province 230009, China
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering, School
of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei, Anhui Province 230009, China
| |
Collapse
|
141
|
Chen JL, Yang L, Wang Q, Jiang ZQ, Liu N, Yin J, Ding Y, Wu ZQ. Helix-Sense-Selective and Enantiomer-Selective Living Polymerization of Phenyl Isocyanide Induced by Reusable Chiral Lactide Using Achiral Palladium Initiator. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02124] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jia-Li Chen
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| | - Li Yang
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| | - Qian Wang
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| | - Zhi-Qiang Jiang
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| | - Na Liu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| | - Jun Yin
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| | - Yunsheng Ding
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| | - Zong-Quan Wu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Hefei 230009, China
| |
Collapse
|
142
|
Gröschel AH, Müller AHE. Self-assembly concepts for multicompartment nanostructures. NANOSCALE 2015; 7:11841-76. [PMID: 26123217 DOI: 10.1039/c5nr02448j] [Citation(s) in RCA: 236] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Compartmentalization is ubiquitous to many biological and artificial systems, be it for the separate storage of incompatible matter or to isolate transport processes. Advancements in the synthesis of sequential block copolymers offer a variety of tools to replicate natural design principles with tailor-made soft matter for the precise spatial separation of functionalities on multiple length scales. Here, we review recent trends in the self-assembly of amphiphilic block copolymers to multicompartment nanostructures (MCNs) under (semi-)dilute conditions, with special emphasis on ABC triblock terpolymers. The intrinsic immiscibility of connected blocks induces short-range repulsion into discrete nano-domains stabilized by a third, soluble block or molecular additive. Polymer blocks can be synthesized from an arsenal of functional monomers directing self-assembly through packing frustration or response to various fields. The mobility in solution further allows the manipulation of self-assembly processes into specific directions by clever choice of environmental conditions. This review focuses on practical concepts that direct self-assembly into predictable nanostructures, while narrowing particle dispersity with respect to size, shape and internal morphology. The growing understanding of underlying self-assembly mechanisms expands the number of experimental concepts providing the means to target and manipulate progressively complex superstructures.
Collapse
Affiliation(s)
- André H Gröschel
- Molecular Materials, Department of Applied Physics, Aalto University School of Science, FIN-00076 Aalto, Espoo, Finland.
| | | |
Collapse
|
143
|
Schnermann MJ, Shenvi RA. Syntheses and biological studies of marine terpenoids derived from inorganic cyanide. Nat Prod Rep 2015; 32:543-77. [PMID: 25514696 DOI: 10.1039/c4np00109e] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Isocyanoterpenes (ICTs) are marine natural products biosynthesized through an unusual pathway that adorns terpene scaffolds with nitrogenous functionality derived from cyanide. The appendage of nitrogen functional groups - isonitriles in particular - onto stereochemically-rich carbocyclic ring systems provides enigmatic, bioactive molecules that have required innovative chemical syntheses. This review discusses the challenges inherent to the synthesis of this diverse family and details the development of the field. We also present recent progress in isolation and discuss key aspects of the remarkable biological activity of these compounds.
Collapse
Affiliation(s)
- Martin J Schnermann
- Chemical Biology Laboratory, National Cancer Institute, Frederick, MD 21701, USA.
| | | |
Collapse
|
144
|
Maeda K, Miyagawa T, Furuko A, Onouchi H, Yashima E. Dual Memory of Enantiomeric Helices in Poly(phenylacetylene)s Induced by a Single Enantiomer through Helix Inversion and Dual Storage of the Enantiomeric Helicity Memories. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01269] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Katsuhiro Maeda
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Toyoharu Miyagawa
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Akira Furuko
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hisanari Onouchi
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Eiji Yashima
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| |
Collapse
|
145
|
Yamagishi H, Fukino T, Hashizume D, Mori T, Inoue Y, Hikima T, Takata M, Aida T. Metal–Organic Nanotube with Helical and Propeller-Chiral Motifs Composed of a C10-Symmetric Double-Decker Nanoring. J Am Chem Soc 2015; 137:7628-31. [DOI: 10.1021/jacs.5b04386] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroshi Yamagishi
- Department
of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takahiro Fukino
- Department
of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tadashi Mori
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1
Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yoshihisa Inoue
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1
Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Takaaki Hikima
- RIKEN SPring-8 Center, 1-1-1
Kouto, Sayo, Hyogo 679-5198, Japan
| | - Masaki Takata
- RIKEN SPring-8 Center, 1-1-1
Kouto, Sayo, Hyogo 679-5198, Japan
| | - Takuzo Aida
- Department
of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
146
|
Ikai T, Takagi Y, Shinohara KI, Maeda K, Kanoh S. Synthesis of polyisocyanides bearing oligothiophene pendants: higher-order structural control through pendant framework design. Polym J 2015. [DOI: 10.1038/pj.2015.42] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
147
|
Synthesis of novel helical poly(N-propargylamides) containing azobenzene pendant groups and effects of substitution groups on azobenzene on the stability of helix. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.01.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
148
|
Sun S, Huang B, Li F, Song D, Hu A. Synthesis of chiral polyphenylenes through Bergman cyclization of enediynes with pendant chiral amino ester groups. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1622-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
149
|
Zhang C, Zhang Y, Zhang H, Hu Y, Zhang X, Masuda T. Synthesis and ion responsiveness of optically active polyacetylenes containing salicylidene Schiff-base moieties. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
150
|
Wang R, Zhang J, Wan X. Optically Active Helical Vinylterphenyl Polymers: Chiral Teleinduction in Radical Polymerization and Tunable Stereomutation. CHEM REC 2015; 15:475-94. [DOI: 10.1002/tcr.201402083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Rong 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 P. R. 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 P. R. 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 P. R. China
| |
Collapse
|