1
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Hendeniya N, Chittick C, Hillery K, Abtahi S, Mosher C, Chang B. Revealing the Kinetic Phase Behavior of Block Copolymer Complexes Using Solvent Vapor Absorption-Desorption Isotherms. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18144-18153. [PMID: 38530201 PMCID: PMC11009910 DOI: 10.1021/acsami.4c00076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 03/27/2024]
Abstract
Controlling the self-assembled morphologies in block copolymers heavily depends on their molecular architecture and processing conditions. Solvent vapor annealing is a versatile processive pathway to obtain highly periodic self-assemblies from high chi (χ) block copolymers (BCPs) and supramolecular BCP complexes. Despite the importance of navigating the energy landscape, controlled solvent vapor annealing (SVA) has not been investigated in BCP complexes, partly due to its intricate multicomponent nature. We introduce characteristic absorption-desorption solvent vapor isotherms as an effective way to understand swelling behavior and follow the morphological evolution of the polystyrene-block-poly(4-vinylpyridine) block copolymer complexed with pentadecylphenol (PS-b-P4VP(PDP)). Using the sorption isotherms, we identify the glass transition points, polymer-solvent interaction parameters, and bulk modulus. These parameters indicate that complexation completely screens the polymer interchain interactions. Furthermore, we established that the sorption isotherm of the homopolymer blocks serves to deconvolute the intricacy of BCP complexes. We applied our findings by developing annealing pathways for grain coarsening while preventing macroscopic film dewetting under SVA. Here, grain coarsening obeyed a power law and the growth exponent revealed a kinetic transition point for rapid self-assembly. Overall, SVA-based sorption isotherms have emerged as a critical method for understanding and developing annealing pathways for BCP complexes.
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Affiliation(s)
- Nayanathara Hendeniya
- Department
of Materials Science and Engineering, Iowa
State University, Ames, Iowa 50011, United States
| | - Caden Chittick
- Department
of Materials Science and Engineering, Iowa
State University, Ames, Iowa 50011, United States
| | - Kaitlyn Hillery
- Department
of Materials Science and Engineering, Iowa
State University, Ames, Iowa 50011, United States
| | - Shaghayegh Abtahi
- Department
of Materials Science and Engineering, Iowa
State University, Ames, Iowa 50011, United States
| | - Curtis Mosher
- Roy
J. Carver High-Resolution Microscopy Facility, Office of Biotechnology, Iowa State University, Ames, Iowa 50011, United States
| | - Boyce Chang
- Department
of Materials Science and Engineering, Iowa
State University, Ames, Iowa 50011, United States
- Micro-Electronics
Research Center, Iowa State University, Ames, Iowa 50011, United States
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2
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Singh S, Ghoshal T, Prochukhan N, Fernandez AA, Vasquez JF, Yadav P, Padmanabhan SC, Morris MA. Morphology Engineering of the Asymmetric PS- b-P4VP Block Copolymer: From Porous to Nanodot Oxide Structures. ACS APPLIED POLYMER MATERIALS 2023; 5:9612-9619. [PMID: 37970530 PMCID: PMC10644307 DOI: 10.1021/acsapm.3c02120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/17/2023]
Abstract
In the present work, we demonstrate the formation of oxide porous and nanodot structures from the same block copolymer (BCP) by the phase inversion of a BCP template. We investigated the effect of solvent annealing time on the ordering of asymmetric, cylinder forming, polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) BCP. Phase separation of PS-b-P4VP was achieved by solvent vapor annealing (SVA) in a solvent atmosphere that is (partially) selective to P4VP to initially generate hexagonally arranged, cylindrical arrays of the expected structure. The morphology of the BCP changed from P4VP hexagonally packed cylinders to an 'inverse' structure with PS cylinders embedded in a P4VP matrix. This suggests that selective swelling occurs over time such that the swollen P4VP phase becomes the majority volume component. Metal ions (Ga3+, In3+) were infiltrated into the BCP templates by a solution-mediated infiltration approach, followed by an ultraviolet-ozone treatment to remove the polymer and oxidize the metallic ions to their oxides. The findings show that a single BCP can be used to create both metal oxide arrays and porous structures of metal oxides by simply varying the duration of the solvent annealing process. The resulting structures were analyzed through several methods including scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy, and energy-dispersive X-ray spectroscopy. XPS analyses confirmed the complete elimination of the BCP template and the presence of metal oxides. This study provides important insights into the development of functional BCP materials with inverse structures.
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Affiliation(s)
- Sajan Singh
- AMBER Research Centre and
School of Chemistry, Trinity College Dublin, Dublin 2 D02AK60, Ireland
| | - Tandra Ghoshal
- AMBER Research Centre and
School of Chemistry, Trinity College Dublin, Dublin 2 D02AK60, Ireland
| | - Nadezda Prochukhan
- AMBER Research Centre and
School of Chemistry, Trinity College Dublin, Dublin 2 D02AK60, Ireland
| | | | | | - Pravind Yadav
- AMBER Research Centre and
School of Chemistry, Trinity College Dublin, Dublin 2 D02AK60, Ireland
| | - Sibu C. Padmanabhan
- AMBER Research Centre and
School of Chemistry, Trinity College Dublin, Dublin 2 D02AK60, Ireland
| | - Michael A. Morris
- AMBER Research Centre and
School of Chemistry, Trinity College Dublin, Dublin 2 D02AK60, Ireland
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3
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Larison T, Pingali SV, Stefik M. New approach for SANS measurement of micelle chain mixing during size and morphology transitions. SOFT MATTER 2023; 19:3487-3495. [PMID: 37133391 DOI: 10.1039/d3sm00157a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Chain exchange in amphiphilic block polymer micelles is measurable with time-resolved small-angle neutron scattering (TR-SANS) where contrast-matched conditions reveal chain mixing as reduced intensity. However, analyzing chain mixing on short time scales e.g. during micelle transformations remains challenging. SANS model fitting can quantify chain mixing during size and morphology changes, however short acquisition times lead to lower data statistics (higher error). Such data are unsuitable for form factor fitting, especially with polydisperse and/or multimodal scenarios. An integrated-reference approach, R(t), is compatible with such data by using fixed reference patterns for the unmixed and fully mixed states that are each integrated to improve data statistics (lower error). Although the R(t) approach is tolerant of low data statistics, it remains incompatible with size and morphology changes. A new shifting references relaxation approach, SRR(t), is proposed where reference patterns are acquired at each time point to enable mixed state calculations regardless of short acquisition times. The additional experimental measurements needed are described which provide these time-varying reference patterns. The use of reference patterns makes the SRR(t) approach size/morphology-agnostic, allowing for the extent of micelle mixing to be directly calculated without this knowledge. SRR(t) is thus compatible with arbitrary levels of complexity and can provide accurate assessment of the mixed state which could support future model analysis. Calculated scattering datasets were used to demonstrate the SRR(t) approach during multiple size, morphology, and solvent conditions (scenarios 1-3). The mixed state calculated from the SRR(t) approach is shown to be accurate for all three scenarios.
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Affiliation(s)
- Taylor Larison
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
| | - Sai Venkatesh Pingali
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Morgan Stefik
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
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4
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Singh S, Kumar L, Horechyy A, Aftenieva O, Mittal M, Sanwaria S, Srivastava RK, König TAF, Fery A, Nandan B. Block Copolymer-Templated Au@CdSe Core-Satellite Nanostructures with Solvent-Dependent Optical Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6231-6239. [PMID: 37074843 DOI: 10.1021/acs.langmuir.3c00479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In the present work, we report the fabrication and characterization of well-defined core-satellite nanostructures. These nanostructures comprise block copolymer (BCP) micelles, containing a single gold nanoparticle (AuNP) in the core and multiple photoluminescent cadmium selenide (CdSe) quantum dots (QDs) attached to the micelle's coronal chains. The asymmetric polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) BCP was employed to develop these core-satellite nanostructures in a series of P4VP-selective alcoholic solvents. The BCP micelles were first prepared in 1-propanol and subsequently mixed with AuNPs, followed by gradual addition of CdSe QDs. This method resulted in the development of spherical micelles that contained a PS/Au core and a P4VP/CdSe shell. These core-satellite nanostructures, developed in different alcoholic solvents, were further employed for the time-resolved photoluminescence analysis. It was found that solvent-selective swelling of the core-satellite nanostructures tunes the distance between the QDs and AuNPs and modulates their Förster resonance energy transfer (FRET) behavior. The average lifetime of the donor emission varied from 12.3 to 10.3 nanoseconds (ns) with the change in the P4VP-selective solvent within the core-satellite nanostructures. Furthermore, the distances between the donor and acceptor were also calculated using efficiency measurements and corresponding Förster distances. The resulting core-satellite nanostructures hold promising potential in various fields, such as photonics, optoelectronics, and sensors that utilize the FRET process.
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Affiliation(s)
- Sajan Singh
- Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi- 110016, India
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
| | - Labeesh Kumar
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
| | - Andriy Horechyy
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
| | - Olha Aftenieva
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
| | - Mona Mittal
- Department of Chemistry, Galgotia College of Engineering and Technology, Greater Noida, Uttar Pradesh 201310, India
| | - Sunita Sanwaria
- Department of Chemistry, Deshbandhu College, University of Delhi, Delhi 110019, India
| | - Rajiv K Srivastava
- Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi- 110016, India
| | - Tobias A F König
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
- Technische Universität Dresden, Physical Chemistry of Polymer Materials, 01062 Dresden, Germany
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
- Technische Universität Dresden, Physical Chemistry of Polymer Materials, 01062 Dresden, Germany
| | - Bhanu Nandan
- Department of Textile & Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi- 110016, India
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5
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Kumar L, Horechyy A, Paturej J, Nandan B, Kłos JS, Sommer JU, Fery A. Encapsulation of Nanoparticles into Preformed Block Copolymer Micelles Driven by Competitive Solvation: Experimental Studies and Molecular Dynamic Simulations. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Labeesh Kumar
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069Dresden, Germany
| | - Andriy Horechyy
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069Dresden, Germany
| | - Jarosław Paturej
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069Dresden, Germany
- Institute of Physics, University of Silesia, Chorzów, 41-500, Poland
| | - Bhanu Nandan
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Jarosław S. Kłos
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069Dresden, Germany
- Faculty of Physics, A. Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614Poznań, Poland
| | - Jens-Uwe Sommer
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069Dresden, Germany
- Institute for Theoretical Physics, Technische Universität Dresden, Dresden01062, Germany
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069Dresden, Germany
- Physical Chemistry of Polymer Materials, Technische Universität Dresden, Dresden01062, Germany
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6
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Esmeraldo Paiva A, Baez Vasquez JF, Selkirk A, Prochukhan N, G L Medeiros Borsagli F, Morris M. Highly Ordered Porous Inorganic Structures via Block Copolymer Lithography: An Application of the Versatile and Selective Infiltration of the "Inverse" P2VP- b-PS System. ACS APPLIED MATERIALS & INTERFACES 2022; 14:35265-35275. [PMID: 35876355 DOI: 10.1021/acsami.2c10338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A facile and versatile strategy was developed to produce highly ordered porous metal oxide structures via block copolymer (BCP) lithography. Phase separation of poly(2-vinylpyridine)-b-polystyrene (P2VP-b-PS) was induced by solvent vapor annealing in a nonselective solvent environment to fabricate cylindrical arrays. In this work, we thoroughly analyzed the effects of the film thickness, solvent annealing time, and temperature on the ordering of a P2VP-majority system for the first time, resulting in "inverse" structures. Reflectometry, atomic force microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy were used to characterize the formation of the highly ordered BCP morphology and the subsequently produced metal oxide film. At 40 min solvent annealing time, hexagonally close packed structures were produced with cylinder diameters ∼40 nm. Subsequently, the BCP films were infiltrated with different metal cations. Metal ions (Cr, Fe, Ni, and Ga) selectively infiltrated the P2VP domain, while the PS did not retain any detectable amount of metal precursor. This gave rise to a metal oxide porous structure after a UV/ozone (UVO) treatment. The results showed that the metal oxide structures demonstrated high fidelity compared to the BCP template and cylindrical domains presented a similar size to the previous PS structure. Moreover, XPS analyses revealed the complete elimination of the BCP template and confirmed the presence of the metal oxides. These metal oxides were used as hard masks for pattern transfer via dry etching as a further application. Silicon nanopores were fabricated mimicking the BCP template and demonstrated a pore depth of ∼50 nm. Ultimately, this strategy can be applied to create different inorganic nanostructures for a diverse range of applications, for example, solar cells, diodes, and integrated circuits. Furthermore, by optimizing the etching parameters, deeper structures can be obtained via ICP/RIE processes, leading to many potential applications.
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Affiliation(s)
- Aislan Esmeraldo Paiva
- AMBER Research Centre/School of Chemistry, Trinity College Dublin, Dublin D02W085, Ireland
| | | | - Andrew Selkirk
- AMBER Research Centre/School of Chemistry, Trinity College Dublin, Dublin D02W085, Ireland
| | - Nadezda Prochukhan
- AMBER Research Centre/School of Chemistry, Trinity College Dublin, Dublin D02W085, Ireland
| | - Fernanda G L Medeiros Borsagli
- Institute of Engineering, Science and Technology, Universidade Federal dos Vales do Jequitinhonha e Mucuri/UFVJM, Av. 01, 4050, Janaúba, MG 39440-039, Brazil
| | - Michael Morris
- AMBER Research Centre/School of Chemistry, Trinity College Dublin, Dublin D02W085, Ireland
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7
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Yadav P, Gatensby R, Prochukhan N, C. Padmanabhan S, Davó-Quiñonero A, Darragh P, Senthamaraikannan R, Murphy B, Snelgrove M, McFeely C, Singh S, Conway J, O’Connor R, McGlynn E, Lundy R, Morris MA. Fabrication of High-κ Dielectric Metal Oxide Films on Topographically Patterned Substrates: Polymer Brush-Mediated Depositions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:32729-32737. [PMID: 35797515 PMCID: PMC9305981 DOI: 10.1021/acsami.2c07966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Fabrication of ultrathin films of dielectric (with particular reference to materials with high dielectric constants) materials has significance in many advanced technological applications including hard protective coatings, sensors, and next-generation logic devices. Current state-of-the-art in microelectronics for fabricating these thin films is a combination of atomic layer deposition and photolithography. As feature size decreases and aspect ratios increase, conformality of the films becomes paramount. Here, we show a polymer brush template-assisted deposition of highly conformal, ultrathin (sub 5 nm) high-κ dielectric metal oxide films (hafnium oxide and zirconium oxide) on topographically patterned silicon nitride substrates. This technique, using hydroxyl terminated poly-4-vinyl pyridine (P4VP-OH) as the polymer brush, allows for conformal deposition with uniform thickness along the trenches and sidewalls of the substrate. Metal salts are infiltrated into the grafted monolayer polymer brush films via solution deposition. Tailoring specific polymer interfacial chemistries for ion infiltration combined with subsequent oxygen plasma treatment enabled the fabrication of high-quality sub 5 nm metal oxide films.
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Affiliation(s)
- Pravind Yadav
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Riley Gatensby
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Nadezda Prochukhan
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Sibu C. Padmanabhan
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Arantxa Davó-Quiñonero
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Philip Darragh
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | | | - Bríd Murphy
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Matthew Snelgrove
- School
of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Caitlin McFeely
- School
of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Sajan Singh
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Jim Conway
- National
Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Robert O’Connor
- School
of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Enda McGlynn
- School
of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
- National
Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Ross Lundy
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Michael A. Morris
- AMBER
Research Centre and School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
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8
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A Review of Polymeric Micelles and Their Applications. Polymers (Basel) 2022; 14:polym14122510. [PMID: 35746086 PMCID: PMC9230755 DOI: 10.3390/polym14122510] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 12/21/2022] Open
Abstract
Self-assembly of amphiphilic polymers with hydrophilic and hydrophobic units results in micelles (polymeric nanoparticles), where polymer concentrations are above critical micelle concentrations (CMCs). Recently, micelles with metal nanoparticles (MNPs) have been utilized in many bio-applications because of their excellent biocompatibility, pharmacokinetics, adhesion to biosurfaces, targetability, and longevity. The size of the micelles is in the range of 10 to 100 nm, and different shapes of micelles have been developed for applications. Micelles have been focused recently on bio-applications because of their unique properties, size, shape, and biocompatibility, which enhance drug loading and target release in a controlled manner. This review focused on how CMC has been calculated using various techniques. Further, micelle importance is explained briefly, different types and shapes of micelles are discussed, and further extensions for the application of micelles are addressed. In the summary and outlook, points that need focus in future research on micelles are discussed. This will help researchers in the development of micelles for different applications.
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Kurz H, Hils C, Timm J, Hörner G, Greiner A, Marschall R, Schmalz H, Weber B. Self‐Assembled Fluorescent Block Copolymer Micelles with Responsive Emission. Angew Chem Int Ed Engl 2022; 61:e202117570. [PMID: 35129881 PMCID: PMC9310857 DOI: 10.1002/anie.202117570] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Indexed: 11/06/2022]
Affiliation(s)
- Hannah Kurz
- Department of Chemistry Inorganic Chemistry IV University of Bayreuth Universitätsstrasse 30 95447 Bayreuth Germany
| | - Christian Hils
- Macromolecular Chemistry and Bavarian Polymer Institute University of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany
| | - Jana Timm
- Department of Chemistry Physical Chemistry III University of Bayreuth Universitätsstrasse 30 95447 Bayreuth Germany
| | - Gerald Hörner
- Department of Chemistry Inorganic Chemistry IV University of Bayreuth Universitätsstrasse 30 95447 Bayreuth Germany
| | - Andreas Greiner
- Macromolecular Chemistry and Bavarian Polymer Institute University of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany
| | - Roland Marschall
- Department of Chemistry Physical Chemistry III University of Bayreuth Universitätsstrasse 30 95447 Bayreuth Germany
| | - Holger Schmalz
- Macromolecular Chemistry and Bavarian Polymer Institute University of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany
| | - Birgit Weber
- Department of Chemistry Inorganic Chemistry IV University of Bayreuth Universitätsstrasse 30 95447 Bayreuth Germany
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10
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Kurz H, Hils C, Timm J, Hörner G, Greiner A, Marschall R, Schmalz H, Weber B. Selbstassemblierte fluoreszierende Blockcopolymer‐Mizellen mit responsiver Emission. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hannah Kurz
- Institut für Chemie Anorganische Chemie IV Universität Bayreuth Universitätsstrasse 30 95447 Bayreuth Deutschland
| | - Christian Hils
- Macromolecular Chemistry and Bavarian Polymer Institute University of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany
| | - Jana Timm
- Institut für Chemie Physikalische Chemie III Universität Bayreuth Universitätsstrasse 30 95447 Bayreuth Deutschland
| | - Gerald Hörner
- Institut für Chemie Anorganische Chemie IV Universität Bayreuth Universitätsstrasse 30 95447 Bayreuth Deutschland
| | - Andreas Greiner
- Macromolecular Chemistry and Bavarian Polymer Institute University of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany
| | - Roland Marschall
- Institut für Chemie Physikalische Chemie III Universität Bayreuth Universitätsstrasse 30 95447 Bayreuth Deutschland
| | - Holger Schmalz
- Macromolecular Chemistry and Bavarian Polymer Institute University of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany
| | - Birgit Weber
- Institut für Chemie Anorganische Chemie IV Universität Bayreuth Universitätsstrasse 30 95447 Bayreuth Deutschland
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11
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Merekalov AS, Derikov YI, Artemov VV, Ezhov AA, Kudryavtsev YV. Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field. Polymers (Basel) 2021; 13:3959. [PMID: 34833258 PMCID: PMC8622010 DOI: 10.3390/polym13223959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
Morphological transition between hexagonal and lamellar patterns in thin polystyrene-block-poly(4-vinyl pyridine) films simultaneously exposed to a strong in-plane electric field and saturated solvent vapor is studied with atomic force and scanning electron microscopy. In these conditions, standing cylinders made of 4-vinyl pyridine blocks arrange into threads up to tens of microns long along the field direction and then partially merge into standing lamellas. In the course of rearrangement, the copolymer remains strongly segregated, with the minor component domains keeping connectivity between the film surfaces. The ordering tendency becomes more pronounced if the cylinders are doped with Au nanorods, which can increase their dielectric permittivity. Non-selective chloroform vapor works particularly well, though it causes partial etching of the indium tin oxide cathode. On the contrary, 1,4-dioxane vapor selective to polystyrene matrix does not allow for any morphological changes.
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Affiliation(s)
- Alexey S. Merekalov
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.M.); (Y.I.D.); (A.A.E.)
| | - Yaroslav I. Derikov
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.M.); (Y.I.D.); (A.A.E.)
| | - Vladimir V. Artemov
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”, Russian Academy of Sciences, 119333 Moscow, Russia;
| | - Alexander A. Ezhov
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.M.); (Y.I.D.); (A.A.E.)
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Yaroslav V. Kudryavtsev
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.M.); (Y.I.D.); (A.A.E.)
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia
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12
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Kumar L, Singh S, Horechyy A, Fery A, Nandan B. Block Copolymer Template-Directed Catalytic Systems: Recent Progress and Perspectives. MEMBRANES 2021; 11:membranes11050318. [PMID: 33925335 PMCID: PMC8146702 DOI: 10.3390/membranes11050318] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/20/2021] [Accepted: 04/24/2021] [Indexed: 11/16/2022]
Abstract
Fabrication of block copolymer (BCP) template-assisted nano-catalysts has been a subject of immense interest in the field of catalysis and polymer chemistry for more than two decades now. Different methods, such as colloidal route, on-substrate methods, bulk self-assembly approaches, combined approaches, and many others have been used to prepare such nano-catalysts. The present review focuses on the advances made in this direction using diblock, triblock, and other types of BCP self-assembled structures. It will be shown how interestingly, researchers have exploited the features of tunable periodicity, domain orientation, and degree of lateral orders of self-assembled BCPs by using fundamental approaches, as well as using different combinations of simple methods to fabricate efficient catalysts. These approaches allow for fabricating catalysts that are used for the growth of single- and multi-walled carbon nanotubes (CNTs) on the substrate, size-dependent electrooxidation of the carbon mono oxide, cracking of 1,3,5-triisopropylbenzene (TIPB), methanol oxidation, formic acid oxidation, and for catalytic degradation of dyes and water pollutants, etc. The focus will also be on how efficient and ease-of-use catalysts can be fabricated using different BCP templates, and how these have contributed to the fabrication of different nano-catalysts, such as nanoparticle array catalysts, strawberry and Janus-like nanoparticles catalysts, mesoporous nanoparticles and film catalysts, gyroid-based bicontinuous catalysts, and hollow fiber membrane catalysts.
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Affiliation(s)
- Labeesh Kumar
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, 01069 Dresden, Germany;
| | - Sajan Singh
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India;
| | - Andriy Horechyy
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, 01069 Dresden, Germany;
- Correspondence: (A.H.); (A.F.); (B.N.); Tel.: +49-351-4658-324 (A.H.); +49-351-4658-225 (A.F.); +91-11-2659 6679 (B.N.)
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, 01069 Dresden, Germany;
- Institute of Physical Chemistry of Polymeric Materials, Technische Universität Dresden, 01062 Dresden, Germany
- Correspondence: (A.H.); (A.F.); (B.N.); Tel.: +49-351-4658-324 (A.H.); +49-351-4658-225 (A.F.); +91-11-2659 6679 (B.N.)
| | - Bhanu Nandan
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India;
- Correspondence: (A.H.); (A.F.); (B.N.); Tel.: +49-351-4658-324 (A.H.); +49-351-4658-225 (A.F.); +91-11-2659 6679 (B.N.)
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Wang J, Liu L, Yan G, Li Y, Gao Y, Tian Y, Jiang L. Ionic Transport and Robust Switching Properties of the Confined Self-Assembled Block Copolymer/Homopolymer in Asymmetric Nanochannels. ACS APPLIED MATERIALS & INTERFACES 2021; 13:14507-14517. [PMID: 33733727 DOI: 10.1021/acsami.1c01682] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The self-assembly of block copolymers in a confined space has been proven to be a facile and robust strategy for fabricating assembled structures with various potential applications. Herein, we employed a new pH-responsive polymer self-assembly method to regulate ion transport inside artificial nanochannels. The track-etched asymmetric nanochannels were functionalized with PS22k-b-P4VP17k/hPS4k blend polymers, and the ionic conductance and rectification properties of the proposed system were investigated. The pH-actuated changes in the surface charge and wettability resulted in the selective pH-gated ionic transport behavior. The designed system showed a good switching property to the pH stimulus and could recover during the repetitive experiments. The gating ability of the polymer-nanochannel system increased with increasing the weight of the homopolymer, and the proposed platform demonstrated robust stability and reusability. Numerical and the dissipative particle dynamics simulations were implemented to emulate the pH-dependent self-assembling behavior of diblock copolymers in a confined space, which were consistent with the experimental observations. As an example of the self-assembly of polymers in nanoconfinements, this work provides a facile and robust strategy for the regulation of ion transport in synthetic nanochannels. Meanwhile, this work can be further extended to design artificial smart nanogates for various applications such as mass delivery and energy harvesting.
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Affiliation(s)
- Jian Wang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Lang Liu
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Guilong Yan
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Yanchun Li
- Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - Yang Gao
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, People's Republic of China
| | - Ye Tian
- Key Laboratory of Bio-inspired Materials and Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, People's Republic of China
- Key Laboratory of Bio-inspired Materials and Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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Williams GT, Haynes CJE, Fares M, Caltagirone C, Hiscock JR, Gale PA. Advances in applied supramolecular technologies. Chem Soc Rev 2021; 50:2737-2763. [DOI: 10.1039/d0cs00948b] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Supramolecular chemistry has successfully built a foundation of fundamental understanding. However, with this now achieved, we show how this area of chemistry is moving out of the laboratory towards successful commercialisation.
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Affiliation(s)
| | | | - Mohamed Fares
- School of Chemistry
- The University of Sydney
- Sydney
- Australia
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (CA)
- Italy
| | | | - Philip A. Gale
- School of Chemistry
- The University of Sydney
- Sydney
- Australia
- The University of Sydney Nano Institute (Sydney Nano)
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15
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Nanoparticle assembly under block copolymer confinement: The effect of nanoparticle size and confinement strength. J Colloid Interface Sci 2020; 578:441-451. [DOI: 10.1016/j.jcis.2020.05.115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/26/2020] [Accepted: 05/30/2020] [Indexed: 01/06/2023]
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16
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Self-Assembly of Block Copolymers. Polymers (Basel) 2020; 12:polym12040794. [PMID: 32252360 PMCID: PMC7240424 DOI: 10.3390/polym12040794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/01/2020] [Indexed: 12/14/2022] Open
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