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Benselfelt T, Cinar Ciftci G, Wågberg L, Wohlert J, Hamedi MM. Entropy Drives Interpolymer Association in Water: Insights into Molecular Mechanisms. Langmuir 2024; 40:6718-6729. [PMID: 38517289 PMCID: PMC10993416 DOI: 10.1021/acs.langmuir.3c02978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/23/2024]
Abstract
Interpolymer association in aqueous solutions is essential for many industrial processes, new materials design, and the biochemistry of life. However, our understanding of the association mechanism is limited. Classical theories do not provide molecular details, creating a need for detailed mechanistic insights. This work consolidates previous literature with complementary isothermal titration calorimetry (ITC) measurements and molecular dynamics (MD) simulations to investigate molecular mechanisms to provide such insights. The large body of ITC data shows that intermolecular bonds, such as ionic or hydrogen bonds, cannot drive association. Instead, polymer association is entropy-driven due to the reorganization of water and ions. We propose a unifying entropy-driven association mechanism by generalizing previously suggested polyion association principles to include nonionic polymers, here termed polydipoles. In this mechanism, complementary charge densities of the polymers are the common denominators of association, for both polyions and polydipoles. The association of the polymers results mainly from two processes: charge exchange and amphiphilic association. MD simulations indicate that the amphiphilic assembly alone is enough for the initial association. Our proposed mechanism is a step toward a molecular understanding of the formation of complexes between synthetic and biological polymers under ambient or biological conditions.
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Affiliation(s)
- Tobias Benselfelt
- Department of Fibre and Polymer
Technology, School of Engineering Sciences in Chemistry, Biotechnology
and Health, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Goksu Cinar Ciftci
- Department of Fibre and Polymer
Technology, School of Engineering Sciences in Chemistry, Biotechnology
and Health, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Lars Wågberg
- Department of Fibre and Polymer
Technology, School of Engineering Sciences in Chemistry, Biotechnology
and Health, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Jakob Wohlert
- Department of Fibre and Polymer
Technology, School of Engineering Sciences in Chemistry, Biotechnology
and Health, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Mahiar Max Hamedi
- Department of Fibre and Polymer
Technology, School of Engineering Sciences in Chemistry, Biotechnology
and Health, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
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Atoufi Z, Cinar Ciftci G, Reid MS, Larsson PA, Wågberg L. Green Ambient-Dried Aerogels with a Facile pH-Tunable Surface Charge for Adsorption of Cationic and Anionic Contaminants with High Selectivity. Biomacromolecules 2022; 23:4934-4947. [DOI: 10.1021/acs.biomac.2c01142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Zhaleh Atoufi
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56−58, SE-100 44Stockholm, Sweden
| | - Goksu Cinar Ciftci
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56−58, SE-100 44Stockholm, Sweden
| | - Michael S. Reid
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56−58, SE-100 44Stockholm, Sweden
| | - Per A. Larsson
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56−58, SE-100 44Stockholm, Sweden
| | - Lars Wågberg
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56−58, SE-100 44Stockholm, Sweden
- Department of Fiber and Polymer Technology, Wallenberg Wood Science Center (WWSC), KTH Royal Institute of Technology, SE-100 44Stockholm, Sweden
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Rostami J, Benselfelt T, Maddalena L, Avci C, Sellman FA, Cinar Ciftci G, Larsson PA, Carosio F, Akhtar F, Tian W, Wågberg L. Shaping 90 wt% NanoMOFs into Robust Multifunctional Aerogels Using Tailored Bio-Based Nanofibrils. Adv Mater 2022; 34:e2204800. [PMID: 35906189 DOI: 10.1002/adma.202204800] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Metal-organic frameworks (MOFs) are hybrid porous crystalline networks with tunable chemical and structural properties. However, their excellent potential is limited in practical applications by their hard-to-shape powder form, making it challenging to assemble MOFs into macroscopic composites with mechanical integrity. While a binder matrix enables hybrid materials, such materials have a limited MOF content and thus limited functionality. To overcome this challenge, nanoMOFs are combined with tailored same-charge high-aspect-ratio cellulose nanofibrils (CNFs) to manufacture robust, wet-stable, and multifunctional MOF-based aerogels with 90 wt% nanoMOF loading. The porous aerogel architectures show excellent potential for practical applications such as efficient water purification, CO2 and CH4 gas adsorption and separation, and fire-safe insulation. Moreover, a one-step carbonization process enables these aerogels as effective structural energy-storage electrodes. This work exhibits the unique ability of high-aspect-ratio CNFs to bind large amounts of nanoMOFs in structured materials with outstanding mechanical integrity-a quality that is preserved even after carbonization. The demonstrated process is simple and fully discloses the intrinsic potential of the nanoMOFs, resulting in synergetic properties not found in the components alone, thus paving the way for MOFs in macroscopic multifunctional composites.
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Affiliation(s)
- Jowan Rostami
- Department of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Stockholm, 11428, Sweden
| | - Tobias Benselfelt
- Department of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Stockholm, 11428, Sweden
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Lorenza Maddalena
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino-Alessandria Campus, Viale Teresa Michel 5, Alessandria, 15121, Italy
| | - Civan Avci
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Paris, F-75005, France
| | - Farhiya Alex Sellman
- Department of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Stockholm, 11428, Sweden
- Department of Fibre and Polymer Technology, Wallenberg Wood Science Center (WWSC), KTH Royal Institute of Technology, Stockholm, 11428, Sweden
| | - Goksu Cinar Ciftci
- Department of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Stockholm, 11428, Sweden
- Material and Surface Design, RISE Research Institutes of Sweden, Stockholm, 11486, Sweden
| | - Per A Larsson
- Department of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Stockholm, 11428, Sweden
| | - Federico Carosio
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino-Alessandria Campus, Viale Teresa Michel 5, Alessandria, 15121, Italy
| | - Farid Akhtar
- Division of Materials Science, Luleå University of Technology, Luleå, 97187, Sweden
| | - Weiqian Tian
- Department of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Stockholm, 11428, Sweden
- School of Materials Science and Engineering, Ocean University of China, Qingdao, Shandong, 266100, China
| | - Lars Wågberg
- Department of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Stockholm, 11428, Sweden
- Department of Fibre and Polymer Technology, Wallenberg Wood Science Center (WWSC), KTH Royal Institute of Technology, Stockholm, 11428, Sweden
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Topolniak I, Elert AM, Knigge X, Ciftci GC, Radnik J, Sturm H. High-Precision Micropatterning of Polydopamine by Multiphoton Lithography. Adv Mater 2022; 34:e2109509. [PMID: 35299285 DOI: 10.1002/adma.202109509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Mussel-inspired polydopamine (PDA) initiates a multifunctional modification route that leads to the generation of novel advanced materials and their applications. However, existing PDA deposition techniques still exhibit poor spatial control, have a very limited capability of micropatterning, and do not allow local tuning of the PDA topography. Herein, PDA deposition based on multiphoton lithography (MPL) is demonstrated, which enables full spatial and temporal control with nearly total freedom of patterning design. Using MPL, 2D microstructures of complex design are achieved with pattern precision of 0.8 µm without the need of a photomask or stamp. Moreover, this approach permits adjusting the morphology and thickness of the fabricated microstructure within one deposition step, resulting in a unique tunability of material properties. The chemical composition of PDA is confirmed and its ability for protein enzyme immobilization is demonstrated. This work presents a new methodology for high-precision and complete control of PDA deposition, enabling PDA incorporation in applications where fine and precise local surface functionalization is required. Possible applications include multicomponent functional elements and devices in microfluidics or lab-on-a-chip systems.
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Affiliation(s)
- Ievgeniia Topolniak
- BAM Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 87, 12205, Berlin, Germany
| | - Anna Maria Elert
- BAM Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 87, 12205, Berlin, Germany
| | - Xenia Knigge
- BAM Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 87, 12205, Berlin, Germany
| | - Goksu Cinar Ciftci
- Materials and Surface Design, RISE Research Institutes of Sweden, Stockholm, 114 28, Sweden
| | - Jörg Radnik
- BAM Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 87, 12205, Berlin, Germany
| | - Heinz Sturm
- BAM Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 87, 12205, Berlin, Germany
- TU Berlin, IWF, Pascalstr. 8-9, 10587, Berlin, Germany
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Hatip Koc M, Cinar Ciftci G, Baday S, Castelletto V, Hamley IW, Guler MO. Hierarchical Self-Assembly of Histidine-Functionalized Peptide Amphiphiles into Supramolecular Chiral Nanostructures. Langmuir 2017; 33:7947-7956. [PMID: 28753315 DOI: 10.1021/acs.langmuir.7b01266] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Controlling the hierarchical organization of self-assembling peptide amphiphiles into supramolecular nanostructures opens up the possibility of developing biocompatible functional supramolecular materials for various applications. In this study, we show that the hierarchical self-assembly of histidine- (His-) functionalized PAs containing d- or l-amino acids can be controlled by both solution pH and molecular chirality of the building blocks. An increase in solution pH resulted in the structural transition of the His-functionalized chiral PA assemblies from nanosheets to completely closed nanotubes through an enhanced hydrogen-bonding capacity and π-π stacking of imidazole ring. The effects of the stereochemistry and amino acid sequence of the PA backbone on the supramolecular organization were also analyzed by CD, TEM, SAXS, and molecular dynamics simulations. In addition, an investigation of chiral mixtures revealed the differences between the hydrogen-bonding capacities and noncovalent interactions of PAs with d- and l-amino acids.
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Affiliation(s)
- Meryem Hatip Koc
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, 06800 Turkey
| | - Goksu Cinar Ciftci
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, 06800 Turkey
| | - Sefer Baday
- Applied Informatics Department, Informatics Institute, Istanbul Technical University , Istanbul, 34469 Turkey
| | - Valeria Castelletto
- Department of Chemistry, University of Reading , Whiteknights, Reading RG6 6AD, U.K
| | - Ian W Hamley
- Department of Chemistry, University of Reading , Whiteknights, Reading RG6 6AD, U.K
| | - Mustafa O Guler
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, 06800 Turkey
- Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637 United States
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Abstract
Peptide nanomaterials have received a great deal of interest in drug-delivery applications due to their biodegradability, biocompatibility, suitability for large-scale synthesis, high drug-loading capacities, targeting ability, and ordered structural organization. The covalent conjugation of drugs to peptide backbones results in prolonged circulation time and improved stability of drugs. Therapeutic efficacy of gemcitabine, which is used for breast cancer treatment, is severely compromised due to its rapid plasma degradation. Its hydrophilic nature poses a challenge for both its efficient encapsulation into nanocarrier systems and its sustained release property. Here, we designed a new peptide prodrug molecule for the anticancer drug gemcitabine, which was covalently conjugated to the C-terminal of 9-fluorenylmethoxy carbonyl (Fmoc)-protected glycine. The prodrug was further integrated into peptide nanocarrier system through noncovalent interactions. A pair of oppositely charged amyloid-inspired peptides (Fmoc-AIPs) were exploited as components of the drug-carrier system and self-assembled into one-dimensional nanofibers at physiological conditions. The gemcitabine integrated nanoprodrug carrier system exhibited slow release and reduced the cellular viability of 4T1 breast cancer cell line in a time- and concentration-dependent manner.
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Affiliation(s)
- Seren Hamsici
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, Turkey 06800
| | - Melis Sardan Ekiz
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, Turkey 06800
| | - Goksu Cinar Ciftci
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, Turkey 06800
| | - Ayse B Tekinay
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, Turkey 06800
| | - Mustafa O Guler
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University , Ankara, Turkey 06800.,Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637, United States
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