51
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Jo Y, Yoon J, Shin S. Computational Insights into the Aggregation Pathway of Self-Assembled Nanotubules. J Phys Chem B 2021; 125:12082-12094. [PMID: 34699214 DOI: 10.1021/acs.jpcb.1c06452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We performed molecular dynamics simulations of self-assembled supramolecular nanotubules constructed from amphiphiles with bent-shaped rods. By systematically examining the structure from dimeric aggregates to the fully developed nanotubule, we identified the basic building block of the nanotubule and the optimal dimensions of its stable structure which are consistent with experimental findings. Moreover, we demonstrate that the cooperative interplay of different interactions drives aggregation by selecting and stabilizing the optimal self-assembled structures for various intermediates through a complex pathway. Additionally, contraction of the nanotubule, which accompanies the dehydration process, was observed upon heating. It is suggested that the optimal stability of the self-assembled aggregates is achieved by balancing entropic and enthalpic contributions, of which the ratio is a critical factor that drives the aggregation pathway.
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Affiliation(s)
- Youngbeom Jo
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jeseong Yoon
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seokmin Shin
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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52
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Vonk KM, Meijer EW, Vantomme G. Depolymerization of supramolecular polymers by a covalent reaction; transforming an intercalator into a sequestrator. Chem Sci 2021; 12:13572-13579. [PMID: 34777777 PMCID: PMC8528007 DOI: 10.1039/d1sc04545h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 09/22/2021] [Indexed: 11/21/2022] Open
Abstract
Controlling the reciprocity between chemical reactivity and supramolecular structure is a topic of great interest in the emergence of molecular complexity. In this work, we investigate the effect of a covalent reaction as a trigger to depolymerize a supramolecular assembly. We focus on the impact of an in situ thiol-ene reaction on the (co)polymerization of three derivatives of benzene-1,3,5-tricarboxamide (BTA) monomers functionalized with cysteine, hexylcysteine, and alkyl side chains: Cys-BTA, HexCys-BTA, and a-BTA. Long supramolecular polymers of Cys-BTA can be depolymerized into short dimeric aggregates of HexCys-BTA via the in situ thiol-ene reaction. Analysis of the system by time-resolved spectroscopy and light scattering unravels the fast dynamicity of the structures and the mechanism of depolymerization. Moreover, by intercalating the reactive Cys-BTA monomer into an unreactive inert polymer, the in situ thiol-ene reaction transforms the intercalator into a sequestrator and induces the depolymerization of the unreactive polymer. This work shows that the implementation of reactivity into supramolecular assemblies enables temporal control of depolymerization processes, which can bring us one step closer to understanding the interplay between non-covalent and covalent chemistry.
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Affiliation(s)
- Kasper M Vonk
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - E W Meijer
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Ghislaine Vantomme
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
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53
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Stach OS, Breul K, Berač CM, Urschbach M, Seiffert S, Besenius P. Bridging Rigidity and Flexibility: Modulation of Supramolecular Hydrogels by Metal Complexation. Macromol Rapid Commun 2021; 43:e2100473. [PMID: 34505725 DOI: 10.1002/marc.202100473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/03/2021] [Indexed: 11/11/2022]
Abstract
The combination of complementary, noncovalent interactions is a key principle for the design of multistimuli responsive hydrogels. In this work, an amphiphilic peptide, supramacromolecular hydrogelator which combines metal-ligand coordination induced gelation and thermoresponsive toughening is reported. Following a modular approach, the incorporation of the triphenylalanine sequence FFF into a structural (C3 EG ) and a terpyridine-functionalized (C3 Tpy ) C3 -symmetric monomer enables their statistical copolymerization into self-assembled, 1D nanorods in water, as investigated by circular dichroism (CD) spectroscopy and transmission electron microscopy (TEM). In the presence of a terpyridine functionalized telechelic polyethylene glycol (PEG) cross-linker, complex formation upon addition of different transition metal ions (Fe2+ , Zn2+ , Ni2+ ) induces the formation of soft, reversible hydrogels at a solid weight content of 1 wt% as observed by linear shear rheology. The viscoelastic behavior of Fe2+ and Zn2+ cross-linked hydrogels are basically identical, while the most kinetically inert Ni2+ coordinative bond leads to significantly weaker hydrogels, suggesting that the most dynamic rather than the most thermodynamically stable interaction supports the formation of robust and responsive hydrogel materials.
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Affiliation(s)
- Oliver S Stach
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, Mainz, 55128, Germany
| | - Katharina Breul
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, Mainz, 55128, Germany.,Graduate School of Materials Science in Mainz, Staudingerweg 9, Mainz, 55128, Germany
| | - Christian M Berač
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, Mainz, 55128, Germany.,Graduate School of Materials Science in Mainz, Staudingerweg 9, Mainz, 55128, Germany
| | - Moritz Urschbach
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, Mainz, 55128, Germany
| | - Sebastian Seiffert
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, Mainz, 55128, Germany.,Graduate School of Materials Science in Mainz, Staudingerweg 9, Mainz, 55128, Germany
| | - Pol Besenius
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, Mainz, 55128, Germany.,Graduate School of Materials Science in Mainz, Staudingerweg 9, Mainz, 55128, Germany
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54
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A case study of monomer design for controlled/living supramolecular polymerization. Polym J 2021. [DOI: 10.1038/s41428-021-00478-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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55
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Caballero R, Barrejón M, Cerdá J, Aragó J, Seetharaman S, de la Cruz P, Ortí E, D’Souza F, Langa F. Self-Assembly-Directed Organization of a Fullerene-Bisporphyrin into Supramolecular Giant Donut Structures for Excited-State Charge Stabilization. J Am Chem Soc 2021; 143:11199-11208. [PMID: 34260220 PMCID: PMC8397305 DOI: 10.1021/jacs.1c05133] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Indexed: 11/29/2022]
Abstract
Functional materials composed of spontaneously self-assembled electron donor and acceptor entities capable of generating long-lived charge-separated states upon photoillumination are in great demand as they are key in building the next generation of light energy harvesting devices. However, creating such well-defined architectures is challenging due to the intricate molecular design, multistep synthesis, and issues associated in demonstrating long-lived electron transfer. In this study, we have accomplished these tasks and report the synthesis of a new fullerene-bis-Zn-porphyrin e-bisadduct by tether-directed functionalization of C60 via a multistep synthetic protocol. Supramolecular oligomers were subsequently formed involving the two porphyrin-bearing arms embracing a fullerene cage of the vicinal molecule as confirmed by MALDI-TOF spectrometry and variable temperature NMR. In addition, the initially formed worm-like oligomers are shown to evolve to generate donut-like aggregates by AFM monitoring that was also supported by theoretical calculations. The final supramolecular donuts revealed an inner cavity size estimated as 23 nm, close to that observed in photosynthetic antenna systems. Upon systematic spectral, computational, and electrochemical studies, an energy level diagram was established to visualize the thermodynamic feasibility of electron transfer in these donor-acceptor constructs. Subsequently, transient pump-probe spectral studies covering the wide femtosecond-to-millisecond time scale were performed to confirm the formation of long-lived charge-separated states. The lifetime of the final charge-separated state was about 40 μs, thus highlighting the significance of the current approach of building giant self-organized donor-acceptor assemblies for light energy harvesting applications.
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Affiliation(s)
- Rubén Caballero
- Instituto
de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Universidad de Castilla-La Mancha, Campus de la Fábrica de Armas, 45071 Toledo, Spain
| | - Myriam Barrejón
- Instituto
de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Universidad de Castilla-La Mancha, Campus de la Fábrica de Armas, 45071 Toledo, Spain
- Neural
Repair and Biomaterials Laboratory, Hospital
Nacional de Parapléjicos (SESCAM), Finca la Peraleda s/n, 45071 Toledo, Spain
| | - Jesús Cerdá
- Instituto
de Ciencia Molecular, Universidad de Valencia, 46950 Paterna, Spain
| | - Juan Aragó
- Instituto
de Ciencia Molecular, Universidad de Valencia, 46950 Paterna, Spain
| | - Sairaman Seetharaman
- Department
of Chemistry, University of North Texas, 1155 Union Circle 305070, Denton, Texas 76203-5017, United States
| | - Pilar de la Cruz
- Instituto
de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Universidad de Castilla-La Mancha, Campus de la Fábrica de Armas, 45071 Toledo, Spain
| | - Enrique Ortí
- Instituto
de Ciencia Molecular, Universidad de Valencia, 46950 Paterna, Spain
| | - Francis D’Souza
- Department
of Chemistry, University of North Texas, 1155 Union Circle 305070, Denton, Texas 76203-5017, United States
| | - Fernando Langa
- Instituto
de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Universidad de Castilla-La Mancha, Campus de la Fábrica de Armas, 45071 Toledo, Spain
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56
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Gruschwitz FV, Klein T, Kuchenbrod MT, Moriyama N, Fujii S, Nischang I, Hoeppener S, Sakurai K, Schubert US, Brendel JC. Kinetically Controlling the Length of Self-Assembled Polymer Nanofibers Formed by Intermolecular Hydrogen Bonds. ACS Macro Lett 2021; 10:837-843. [PMID: 35549195 DOI: 10.1021/acsmacrolett.1c00296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Strong directional hydrogen bonds represent a suitable supramolecular force to drive the one-dimensional (1D) aqueous self-assembly of polymeric amphiphiles resulting in cylindrical polymer brushes. However, our understanding of the kinetics in these assembly processes is still limited. We here demonstrate that the obtained morphologies for our recently reported benzene tris-urea and tris-peptide conjugates are strongly pathway-dependent. A controlled transfer from solutions in organic solvents to aqueous environments enabled a rate-dependent formation of kinetically trapped but stable nanostructures ranging from small cylindrical or spherical objects (<50 nm) to remarkably large fibers (>2 μm). A detailed analysis of the underlying assembly mechanism revealed a cooperative nature despite the steric demands of the polymers. Nucleation is induced by hydrophobic interactions crossing a critical water content, followed by an elongation process due to the strong hydrogen bonds. These findings open an interesting new pathway to control the length of 1D polymer nanostructures.
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Affiliation(s)
- Franka V. Gruschwitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Tobias Klein
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Maren T. Kuchenbrod
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Naoto Moriyama
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Johannes C. Brendel
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
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57
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Stevens CA, Kaur K, Klok HA. Self-assembly of protein-polymer conjugates for drug delivery. Adv Drug Deliv Rev 2021; 174:447-460. [PMID: 33984408 DOI: 10.1016/j.addr.2021.05.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 04/22/2021] [Accepted: 05/03/2021] [Indexed: 01/07/2023]
Abstract
Protein-polymer conjugates are a class of molecules that combine the stability of polymers with the diversity, specificity, and functionality of biomolecules. These bioconjugates can result in hybrid materials that display properties not found in their individual components and can be particularly relevant for drug delivery applications. Engineering amphiphilicity into these bioconjugate materials can lead to phase separation and the assembly of high-order structures. The assembly, termed self-assembly, of these hierarchical structures entails multiple levels of organization: at each level, new properties emerge, which are, in turn, influenced by lower levels. Here, we provide a critical review of protein-polymer conjugate self-assembly and how these materials can be used for therapeutic applications and drug delivery. In addition, we discuss central bioconjugate design questions and propose future perspectives for the field of protein-polymer conjugate self-assembly.
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Affiliation(s)
- Corey A Stevens
- École Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland.
| | - Kuljeet Kaur
- École Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- École Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
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58
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Xu F, Pfeifer L, Crespi S, Leung FKC, Stuart MCA, Wezenberg SJ, Feringa BL. From Photoinduced Supramolecular Polymerization to Responsive Organogels. J Am Chem Soc 2021; 143:5990-5997. [PMID: 33830767 PMCID: PMC8154511 DOI: 10.1021/jacs.1c01802] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Indexed: 12/30/2022]
Abstract
Controlling supramolecular polymerization by external stimuli holds great potential toward the development of responsive soft materials and manipulating self-assembly at the nanoscale. Photochemical switching offers the prospect of regulating the structure and properties of systems in a noninvasive and reversible manner with spatial and temporal control. In addition, this approach will enhance our understanding of supramolecular polymerization mechanisms; however, the control of molecular assembly by light remains challenging. Here we present photoresponsive stiff-stilbene-based bis-urea monomers whose trans isomers readily form supramolecular polymers in a wide range of organic solvents, enabling fast light-triggered depolymerization-polymerization and reversible gel formation. Due to the stability of the cis isomers and the high photostationary states (PSS) of the cis-trans isomerization, precise control over supramolecular polymerization and in situ gelation could be achieved with short response times. A detailed study on the temperature-dependent and photoinduced supramolecular polymerization in organic solvents revealed a kinetically controlled nucleation-elongation mechanism. By application of a Volta phase plate to enhance the phase-contrast method in cryo-EM, unprecedented for nonaqueous solutions, uniform nanofibers were observed in organic solvents.
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Affiliation(s)
- Fan Xu
- Center for System Chemistry,
Stratingh Institute for Chemistry, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | | | - Stefano Crespi
- Center for System Chemistry,
Stratingh Institute for Chemistry, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | | | - Marc C. A. Stuart
- Center for System Chemistry,
Stratingh Institute for Chemistry, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | | | - Ben L. Feringa
- Center for System Chemistry,
Stratingh Institute for Chemistry, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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59
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Minev D, Wintersinger CM, Ershova A, Shih WM. Robust nucleation control via crisscross polymerization of highly coordinated DNA slats. Nat Commun 2021; 12:1741. [PMID: 33741912 PMCID: PMC7979912 DOI: 10.1038/s41467-021-21755-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 01/29/2021] [Indexed: 11/09/2022] Open
Abstract
Natural biomolecular assemblies such as actin filaments or microtubules can exhibit all-or-nothing polymerization in a kinetically controlled fashion. The kinetic barrier to spontaneous nucleation arises in part from positive cooperativity deriving from joint-neighbor capture, where stable capture of incoming monomers requires straddling multiple subunits on a filament end. For programmable DNA self-assembly, it is likewise desirable to suppress spontaneous nucleation to enable powerful capabilities such as all-or-nothing assembly of nanostructures larger than a single DNA origami, ultrasensitive detection, and more robust algorithmic assembly. However, existing DNA assemblies use monomers with low coordination numbers that present an effective kinetic barrier only for slow, near-reversible growth conditions. Here we introduce crisscross polymerization of elongated slat monomers that engage beyond nearest neighbors which sustains the kinetic barrier under conditions that promote fast, irreversible growth. By implementing crisscross slats as single-stranded DNA, we attain strictly seed-initiated nucleation of crisscross ribbons with distinct widths and twists.
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Affiliation(s)
- Dionis Minev
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Christopher M Wintersinger
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Anastasia Ershova
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - William M Shih
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA.
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA.
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60
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Helmers I, Ghosh G, Albuquerque RQ, Fernández G. Pathway and Length Control of Supramolecular Polymers in Aqueous Media via a Hydrogen Bonding Lock. Angew Chem Int Ed Engl 2021; 60:4368-4376. [PMID: 33152151 PMCID: PMC7898687 DOI: 10.1002/anie.202012710] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Indexed: 12/11/2022]
Abstract
Programming the organization of π-conjugated systems into nanostructures of defined dimensions is a requirement for the preparation of functional materials. Herein, we have achieved high-precision control over the self-assembly pathways and fiber length of an amphiphilic BODIPY dye in aqueous media by exploiting a programmable hydrogen bonding lock. The presence of a (2-hydroxyethyl)amide group in the target BODIPY enables different types of intra- vs. intermolecular hydrogen bonding, leading to a competition between kinetically controlled discoidal H-type aggregates and thermodynamically controlled 1D J-type fibers in water. The high stability of the kinetic state, which is dominated by the hydrophobic effect, is reflected in the slow transformation to the thermodynamic product (several weeks at room temperature). However, this lag time can be suppressed by the addition of seeds from the thermodynamic species, enabling us to obtain supramolecular polymers of tuneable length in water for multiple cycles.
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Affiliation(s)
- Ingo Helmers
- Organisch-Chemisches-InstitutWestfälische-Wilhelms-Universität MünsterCorrenstrasse 4048149MünsterGermany
| | - Goutam Ghosh
- Organisch-Chemisches-InstitutWestfälische-Wilhelms-Universität MünsterCorrenstrasse 4048149MünsterGermany
| | - Rodrigo Q. Albuquerque
- Lehrstuhl für SystemverfahrenstechnikTechnical University of Munich (TUM)Gregor-Mendel-Strasse 485354FreisingGermany
| | - Gustavo Fernández
- Organisch-Chemisches-InstitutWestfälische-Wilhelms-Universität MünsterCorrenstrasse 4048149MünsterGermany
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61
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Rho JY, Perrier S. 100th Anniversary of Macromolecular Science Viewpoint: User's Guide to Supramolecular Peptide-Polymer Conjugates. ACS Macro Lett 2021; 10:258-271. [PMID: 35570781 DOI: 10.1021/acsmacrolett.0c00734] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This Viewpoint highlights the design principles and development of peptide-based supramolecular polymers. Here we delve deep into the practicalities of synthesizing and characterizing these macromolecular structures and provide a thorough overview of the benefits and challenges that come with these systems. This Viewpoint emphasizes to beginners and experts alike the importance of understanding the fundamental behavior and self-assembly processes when designing these complex and dynamic functional materials.
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Affiliation(s)
- Julia Y Rho
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Sébastien Perrier
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom.,Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville Victoria 3052, Australia.,Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom
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62
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MacFarlane L, Zhao C, Cai J, Qiu H, Manners I. Emerging applications for living crystallization-driven self-assembly. Chem Sci 2021; 12:4661-4682. [PMID: 34163727 PMCID: PMC8179577 DOI: 10.1039/d0sc06878k] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/12/2021] [Indexed: 01/02/2023] Open
Abstract
The use of crystallization as a tool to control the self-assembly of polymeric and molecular amphiphiles in solution is attracting growing attention for the creation of non-spherical nanoparticles and more complex, hierarchical assemblies. In particular, the seeded growth method termed living crystallization-driven self-assembly (CDSA) has been established as an ambient temperature and potentially scalable platform for the preparation of low dispersity samples of core-shell fiber-like or platelet micellar nanoparticles. Significantly, this method permits predictable control of size, and access to branched and segmented structures where functionality is spatially-defined. Living CDSA operates under kinetic control and shows many analogies with living chain-growth polymerizations of molecular organic monomers that afford well-defined covalent polymers of controlled length except that it covers a much longer length scale (ca. 20 nm to 10 μm). The method has been applied to a rapidly expanding range of crystallizable polymeric amphiphiles, which includes block copolymers and charge-capped homopolymers, to form assemblies with crystalline cores and solvated coronas. Living CDSA seeded growth methods have also been transposed to a wide variety of π-stacking and hydrogen-bonding molecular species that form supramolecular polymers in processes termed "living supramolecular polymerizations". In this article we outline the main features of the living CDSA method and then survey the promising emerging applications for the resulting nanoparticles in fields such as nanomedicine, colloid stabilization, catalysis, optoelectronics, information storage, and surface functionalization.
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Affiliation(s)
- Liam MacFarlane
- Department of Chemistry, University of Victoria British Columbia Canada
| | - Chuanqi Zhao
- Department of Chemistry, University of Victoria British Columbia Canada
| | - Jiandong Cai
- Department of Chemistry, University of Victoria British Columbia Canada
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Huibin Qiu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Ian Manners
- Department of Chemistry, University of Victoria British Columbia Canada
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63
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Heczko D, Jurkiewicz K, Grelska J, Kamiński K, Paluch M, Kamińska E. Influence of High Pressure on the Local Order and Dynamical Properties of the Selected Azole Antifungals. J Phys Chem B 2020; 124:11949-11961. [PMID: 33325713 DOI: 10.1021/acs.jpcb.0c08083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dielectric studies under various temperature (T) and pressure (p) conditions on five active pharmaceutical ingredients (APIs) with antifungal properties-itraconazole (ITZ), posaconazole (POS), terconazole (TER), ketoconazole (KET), and fluconazole (FLU)-were carried out. We have thoroughly studied the connection between the pressure coefficient of the glass transition temperature (dTg/dp) and the activation volume of both relaxation modes (ΔVα, ΔVδ/α') with respect to the molecular weight (Mw) or molar volume (Vm) in these systems. Besides, high pressure data revealed that the time scale separation between α- and δ- or α'-processes increases with pressure in ITZ and TER. What is more, the activation entropy, which is a measure of cooperativity, calculated from the Eyring model for the secondary (β)-relaxation in ITZ and POS, increased and decreased, respectively, in the compressed samples. To understand these peculiar results, we have carried out X-ray diffraction (XRD) measurements on the pressure-densified glasses and found that pressure may induce frustration in molecular organization and destroy the medium-range order while enhancing the short-range correlations between molecules. This finding allowed us to conclude that varying molecular spatial arrangement is responsible for the extraordinary dynamical behavior of ITZ, POS, and TER at high pressure.
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Affiliation(s)
- Dawid Heczko
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Karolina Jurkiewicz
- Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.,Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Joanna Grelska
- Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.,Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Kamil Kamiński
- Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.,Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.,Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Ewa Kamińska
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland
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64
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Helmers I, Ghosh G, Albuquerque RQ, Fernández G. Pfad‐ und Längenkontrolle von supramolekularen Polymeren im wässrigen Medium mittels eines Wasserstoffbrückenschlosses. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012710] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ingo Helmers
- Organisch-Chemisches-Institut Westfälische-Wilhelms-Universität Münster Correnstraße 40 48149 Münster Deutschland
| | - Goutam Ghosh
- Organisch-Chemisches-Institut Westfälische-Wilhelms-Universität Münster Correnstraße 40 48149 Münster Deutschland
| | - Rodrigo Q. Albuquerque
- Lehrstuhl für Systemverfahrenstechnik Technische Universität München (TUM) Gregor-Mendel-Straße 4 85354 Freising Deutschland
| | - Gustavo Fernández
- Organisch-Chemisches-Institut Westfälische-Wilhelms-Universität Münster Correnstraße 40 48149 Münster Deutschland
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65
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Gruschwitz FV, Fu MC, Klein T, Takahashi R, Higashihara T, Hoeppener S, Nischang I, Sakurai K, Brendel JC. Unraveling Decisive Structural Parameters for the Self-Assembly of Supramolecular Polymer Bottlebrushes Based on Benzene Trisureas. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01361] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Franka V. Gruschwitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Mao-Chun Fu
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Tobias Klein
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Rintaro Takahashi
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Tomoya Higashihara
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Johannes C. Brendel
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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66
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Fukui T, Garcia-Hernandez JD, MacFarlane LR, Lei S, Whittell GR, Manners I. Seeded Self-Assembly of Charge-Terminated Poly(3-hexylthiophene) Amphiphiles Based on the Energy Landscape. J Am Chem Soc 2020; 142:15038-15048. [PMID: 32786794 DOI: 10.1021/jacs.0c06185] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The creation of 1D π-conjugated nanofibers with precise control and optimized optoelectronic properties is of widespread interest for applications as nanowires. "Living" crystallization-driven self-assembly (CDSA) is a seeded growth method of growing importance for the preparation of uniform 1D fiber-like micelles from a range of crystallizable polymeric amphiphiles. However, in the case of polythiophenes, one of the most important classes of conjugated polymer, only limited success has been achieved to date using block copolymers as precursors. Herein, we describe studies of the living CDSA of phosphonium-terminated amphiphilic poly(3-hexylthiophene)s to prepare colloidally stable nanofibers. In depth studies of the relationship between the degree of polymerization and the self-assembly behavior permitted the unveiling of the energy landscape of the living CDSA process. On the basis of the kinetic and thermodynamic insight provided, we have been able to achieve an unprecedented level of control over the length of low dispersity fiber-like micelles from 40 nm to 2.8 μm.
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Affiliation(s)
- Tomoya Fukui
- Department of Chemistry, University of Victoria, Victoria, Bristish Columbia V8P 5C2, Canada
| | | | - Liam R MacFarlane
- Department of Chemistry, University of Victoria, Victoria, Bristish Columbia V8P 5C2, Canada
| | - Shixing Lei
- Department of Chemistry, University of Victoria, Victoria, Bristish Columbia V8P 5C2, Canada
| | - George R Whittell
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, Bristish Columbia V8P 5C2, Canada
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67
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Dey P, Rajdev P, Pramanik P, Haag R, Ghosh S. Synthesis of a Cylindrical Micelle from Hydrophilic Polymers Connected with a Single Supramolecular Structure-Directing Unit. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01493] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Rainer Haag
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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68
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Dhiman S, Ghosh R, Sarkar S, George SJ. Controlled synthesis of organic two-dimensional nanostructures via reaction-driven, cooperative supramolecular polymerization. Chem Sci 2020; 11:12701-12709. [PMID: 34094465 PMCID: PMC8163148 DOI: 10.1039/d0sc02670k] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/16/2020] [Indexed: 01/26/2023] Open
Abstract
The bottom-up approach of supramolecular polymerization is an effective synthetic method for functional organic nanostructures. However, the uncontrolled growth and polydisperse structural outcome often lead to low functional efficiency. Thus, precise control over the structural characteristics of supramolecular polymers is the current scientific hurdle. Research so far has tended to focus on systems with inherent kinetic control by the presence of metastable state monomers either through conformational molecular design or by exploring pathway complexity. The need of the hour is to create generic strategies for dormant states of monomers that can be extended to different molecules and various structural organizations and dimensions. Here we venture to demonstrate chemical reaction-driven cooperative supramolecular polymerization as an alternative strategy for the controlled synthesis of organic two-dimensional nanostructures. In our approach, the dynamic imine bond is exploited to convert a non-assembling dormant monomer to an activated amphiphilic structure in a kinetically controlled manner. The chemical reaction governed retarded nucleation-elongation growth provides control over dispersity and size.
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Affiliation(s)
- Shikha Dhiman
- Supramolecular Chemistry Laboratory, New Chemistry Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre of Advanced Scientific Research (JNCASR) Jakkur Bangalore 560064 India
| | - Rita Ghosh
- Supramolecular Chemistry Laboratory, New Chemistry Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre of Advanced Scientific Research (JNCASR) Jakkur Bangalore 560064 India
| | - Souvik Sarkar
- Supramolecular Chemistry Laboratory, New Chemistry Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre of Advanced Scientific Research (JNCASR) Jakkur Bangalore 560064 India
| | - Subi J George
- Supramolecular Chemistry Laboratory, New Chemistry Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre of Advanced Scientific Research (JNCASR) Jakkur Bangalore 560064 India
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69
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Shaikh H, Jin XH, Harniman RL, Richardson RM, Whittell GR, Manners I. Solid-State Donor–Acceptor Coaxial Heterojunction Nanowires via Living Crystallization-Driven Self-Assembly. J Am Chem Soc 2020; 142:13469-13480. [DOI: 10.1021/jacs.0c04975] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Huda Shaikh
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Xu-Hui Jin
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Robert L. Harniman
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | | | - George R. Whittell
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
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70
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Ghosh G, Ghosh T, Fernández G. Controlled Supramolecular Polymerization of d
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Metal Complexes through Pathway Complexity and Seeded Growth. Chempluschem 2020; 85:1022-1033. [DOI: 10.1002/cplu.202000210] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/25/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Goutam Ghosh
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität, Münster Correnstraße, 40 48149 Münster Germany
| | - Tanwistha Ghosh
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität, Münster Correnstraße, 40 48149 Münster Germany
| | - Gustavo Fernández
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität, Münster Correnstraße, 40 48149 Münster Germany
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71
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Wu S, Cai C, Li F, Tan Z, Dong S. Deep Eutectic Supramolecular Polymers: Bulk Supramolecular Materials. Angew Chem Int Ed Engl 2020; 59:11871-11875. [DOI: 10.1002/anie.202004104] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Indexed: 01/14/2023]
Affiliation(s)
- Shuanggen Wu
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 Hunan P. R. China
| | - Changyong Cai
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Fenfang Li
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Zhijian Tan
- Institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Shengyi Dong
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 Hunan P. R. China
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72
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Wu S, Cai C, Li F, Tan Z, Dong S. Deep Eutectic Supramolecular Polymers: Bulk Supramolecular Materials. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shuanggen Wu
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 Hunan P. R. China
| | - Changyong Cai
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Fenfang Li
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Zhijian Tan
- Institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Shengyi Dong
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 Hunan P. R. China
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73
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Gruschwitz FV, Klein T, Catrouillet S, Brendel JC. Supramolecular polymer bottlebrushes. Chem Commun (Camb) 2020; 56:5079-5110. [PMID: 32347854 DOI: 10.1039/d0cc01202e] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The field of supramolecular chemistry has long been known to generate complex materials of different sizes and shapes via the self-assembly of single or multiple low molar mass building blocks. Matching the complexity found in natural assemblies, however, remains a long-term challenge considering its precision in organizing large macromolecules into well-defined nanostructures. Nevertheless, the increasing understanding of supramolecular chemistry has paved the way to several attempts in arranging synthetic macromolecules into larger ordered structures based on non-covalent forces. This review is a first attempt to summarize the developments in this field, which focus mainly on the formation of one-dimensional, linear, cylindrical aggregates in solution with pendant polymer chains - therefore coined supramolecular polymer bottlebrushes in accordance with their covalent equivalents. Distinguishing by the different supramolecular driving forces, we first describe systems based on π-π interactions, which comprise, among others, the well-known perylene motif, but also the early attempts using cyclophanes. However, the majority of reported supramolecular polymer bottlebrushes are formed by hydrogen bonds as they can for example be found in linear and cyclic peptides, as well as so called sticker molecules containing multiple urea groups. Besides this overview on the reported motifs and their impact on the resulting morphology of the polymer nanostructures, we finally highlight the potential benefits of such non-covalent interactions and refer to promising future directions of this still mostly unrecognized field of supramolecular research.
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Affiliation(s)
- Franka V Gruschwitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
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74
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Mukherjee A, Pal DS, Kar H, Ghosh S. Confined supramolecular polymers in water with exceptional stability, photoluminescence and chiroptical properties. Polym Chem 2020. [DOI: 10.1039/d0py01329c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lipid-encased chiral supramolecular polymer nanorods (SPNRs), synthesized by the nanoprecipitation method in water from a hydrophobic naphthalene-diimide derivative, exhibit excellent thermal stability, intense fluorescence and strong CPL.
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Affiliation(s)
- Anurag Mukherjee
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Deep Sankar Pal
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Haridas Kar
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
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75
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Ghosh G, Dey P, Ghosh S. Controlled supramolecular polymerization of π-systems. Chem Commun (Camb) 2020; 56:6757-6769. [DOI: 10.1039/d0cc02787a] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Externally-initiated controlled supramolecular polymerization of the kinetically trapped aggregated state in a chain growth mechanism can produce well-defined living supramolecular polymers and copolymers.
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Affiliation(s)
- Goutam Ghosh
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation Science
- Kolkata
- India
| | - Pradip Dey
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation Science
- Kolkata
- India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation Science
- Kolkata
- India
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76
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Li H, Zhou LL, Chen JY, Li XY, Kuang GC. Visible light mediated BODIPY/Azo/cyclodextrin based supramolecular polymer assemblies in different water content solutions. Polym Chem 2020. [DOI: 10.1039/d0py00942c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel visible light responsive supramolecular polymer based on oligo(ethylene glycol) modified BODIPY (BDP), tetramethoxyazobenzene (Azo) and dimeric β-cyclodextrin (β-CD-C) was reported.
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Affiliation(s)
- Hang Li
- State Key Laboratory of Power Metallurgy
- Department of Polymer Materials and Engineering
- Central South University
- Changsha
- P. R. China
| | - Liang-Liang Zhou
- State Key Laboratory of Power Metallurgy
- Department of Polymer Materials and Engineering
- Central South University
- Changsha
- P. R. China
| | - Jia-Yi Chen
- State Key Laboratory of Power Metallurgy
- Department of Polymer Materials and Engineering
- Central South University
- Changsha
- P. R. China
| | - Xing-Yu Li
- State Key Laboratory of Power Metallurgy
- Department of Polymer Materials and Engineering
- Central South University
- Changsha
- P. R. China
| | - Gui-Chao Kuang
- State Key Laboratory of Power Metallurgy
- Department of Polymer Materials and Engineering
- Central South University
- Changsha
- P. R. China
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