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Miglani C, Ralhan J, Banoo M, Nath D, Sil S, Pal SK, Gautam UK, Pal A. Stimuli-Responsive Control over Self-Assembled Nanostructures in Sequence-Specific Functional Block Copolymers. ACS POLYMERS AU 2024; 4:255-265. [PMID: 38882035 PMCID: PMC11177304 DOI: 10.1021/acspolymersau.4c00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 06/18/2024]
Abstract
The precise sequence of a protein's primary structure is essential in determining its folding pathways. To emulate the complexity of these biomolecules, functional block copolymers consisting of segmented triblocks with distinct functionalities positioned in a sequence-specific manner are designed to control the polymer chain compaction. Triblock polymers P- b -C- b -F and P- b -F- b -C and random diblock copolymer P- b -C- r -F consist of a hydrophilic poly(ethylene oxide) (PEO) block and a hydrophobic block with coumarin (C) and ferrocene (F) moieties that are grafted in a sequence-specific or random manner onto the hydrophilic block. External stimuli such as UVB light, redox, and chemical cues influence the functional hydrophobic block to alter the packing parameters that are monitored with spectroscopic and scattering techniques. Interestingly, the positioning of the stimuli-responsive moiety within the hydrophobic block of P- b -C- b -F, P- b -F- b -C, and P- b -C- r -F affects the extent of the hydrophobic-hydrophilic balance in block copolymers that renders orthogonal control in stimuli-responsive transformation of self-assembled vesicles to micelles.
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Affiliation(s)
- Chirag Miglani
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Jahanvi Ralhan
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Maqsuma Banoo
- Department of Chemical Sciences, IISER Mohali, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Debasish Nath
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Soma Sil
- Department of Chemical Sciences, IISER Mohali, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Santanu K Pal
- Department of Chemical Sciences, IISER Mohali, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Ujjal K Gautam
- Department of Chemical Sciences, IISER Mohali, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Asish Pal
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
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2
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Sytu MRC, Cho DH, Hahm JI. Self-Assembled Block Copolymers as a Facile Pathway to Create Functional Nanobiosensor and Nanobiomaterial Surfaces. Polymers (Basel) 2024; 16:1267. [PMID: 38732737 PMCID: PMC11085100 DOI: 10.3390/polym16091267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
Block copolymer (BCP) surfaces permit an exquisite level of nanoscale control in biomolecular assemblies solely based on self-assembly. Owing to this, BCP-based biomolecular assembly represents a much-needed, new paradigm for creating nanobiosensors and nanobiomaterials without the need for costly and time-consuming fabrication steps. Research endeavors in the BCP nanobiotechnology field have led to stimulating results that can promote our current understanding of biomolecular interactions at a solid interface to the never-explored size regimes comparable to individual biomolecules. Encouraging research outcomes have also been reported for the stability and activity of biomolecules bound on BCP thin film surfaces. A wide range of single and multicomponent biomolecules and BCP systems has been assessed to substantiate the potential utility in practical applications as next-generation nanobiosensors, nanobiodevices, and biomaterials. To this end, this Review highlights pioneering research efforts made in the BCP nanobiotechnology area. The discussions will be focused on those works particularly pertaining to nanoscale surface assembly of functional biomolecules, biomolecular interaction properties unique to nanoscale polymer interfaces, functionality of nanoscale surface-bound biomolecules, and specific examples in biosensing. Systems involving the incorporation of biomolecules as one of the blocks in BCPs, i.e., DNA-BCP hybrids, protein-BCP conjugates, and isolated BCP micelles of bioligand carriers used in drug delivery, are outside of the scope of this Review. Looking ahead, there awaits plenty of exciting research opportunities to advance the research field of BCP nanobiotechnology by capitalizing on the fundamental groundwork laid so far for the biomolecular interactions on BCP surfaces. In order to better guide the path forward, key fundamental questions yet to be addressed by the field are identified. In addition, future research directions of BCP nanobiotechnology are contemplated in the concluding section of this Review.
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Affiliation(s)
- Marion Ryan C. Sytu
- Department of Chemistry, Georgetown University, 37th & O Sts. NW., Washington, DC 20057, USA
| | - David H. Cho
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA;
| | - Jong-in Hahm
- Department of Chemistry, Georgetown University, 37th & O Sts. NW., Washington, DC 20057, USA
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3
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Sun YS, Jian YQ, Yang ST, Wang HF, Junisu BA, Chen CY, Lin JM. Epitaxial Growth of Surface Perforations on Parallel Cylinders in Terraced Films of Block Copolymer/Homopolymer Blends. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7680-7691. [PMID: 38551605 PMCID: PMC11008238 DOI: 10.1021/acs.langmuir.4c00385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/05/2024] [Accepted: 03/12/2024] [Indexed: 04/10/2024]
Abstract
Due to incommensurability between initial thickness and interdomain distance, thermal annealing inevitably produces relief surface terraces (islands and holes) of various morphologies in thin films of block copolymers. We have demonstrated three kinds of surface terraces in blend films: polygrain terraces with diffuse edges, polygrain terraces with step edges, and pseudo-monograin terraces with island coarsening. The three morphologies were obtained by three different thermal histories, respectively. The thermal histories were imposed on blend films, which were prepared by mixing a homopolystyrene (hPS, 6.1 kg/mol) with a weakly segregated, symmetry polystyrene-block poly(methyl methacrylate) (PS-b-PMMA, 42 kg/mol) followed by spin coating. At a given weight-fraction ratio of PS-b-PMMA/hPS = 75/25, the interior of the blend films forms parallel cylinders. Nevertheless, the surface of the blend films is always dominated by a skin layer of perforations, which epitaxially grow on top of parallel cylinders. By oxygen plasma etching at various time intervals to probe interior nanodomains, the epitaxial relationship between surface perforations and parallel cylinders has been identified by a scanning electron microscope.
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Affiliation(s)
- Ya-Sen Sun
- Department
of Chemical Engineering, National Cheng
Kung University, Tainan 701, Taiwan
| | - Yi-Qing Jian
- Department
of Chemical and Materials Engineering, National
Central University, Taoyuan 32001, Taiwan
| | - Shin-Tung Yang
- Department
of Chemical and Materials Engineering, National
Central University, Taoyuan 32001, Taiwan
| | - Hsiao-Fang Wang
- Department
of Chemical and Materials Engineering, National
Central University, Taoyuan 32001, Taiwan
| | - Belda Amelia Junisu
- Department
of Chemical Engineering, National Cheng
Kung University, Tainan 701, Taiwan
| | - Chun-Yu Chen
- National
Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Jhih-Min Lin
- National
Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
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4
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Hong JW, Jian YQ, Liao YP, Hung HH, Huang TY, Nelson A, Tsao IY, Wu CM, Sun YS. Distributions of Deuterated Polystyrene Chains in Perforated Layers of Blend Films of a Symmetric Polystyrene -block-poly(methyl methacrylate). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13046-13058. [PMID: 34696591 DOI: 10.1021/acs.langmuir.1c02132] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We have examined the spatial distributions of polymer chains in blend films of weakly segregated polystyrene-block-poly(methyl methacrylate) [P(S-b-MMA)] and deuterated polystyrene (dPS). By fine-tuning the composition (ϕPS+dPS = 63.8 vol %) of the total PS/dPS component and annealing temperature (230 and 270 °C), P(S-b-MMA)/dPS blend films mainly form perforated layers with a parallel orientation (hereafter PLs//). The distributions of dPS in PLs// were probed by grazing-incidence small-angle neutron scattering (GISANS) and time-of-flight neutron reflectivity (ToF-NR). GISANS and ToF-NR results offer evidence that dPS chains preferentially locate at the free surface and within the PS layers for blend films that were annealed at 230 °C. Upon annealing at 270 °C, dPS chains distribute within PS layers and perforated PMMA layers. Nevertheless, dPS chains still retain a surface preference for thin films. In contrast, such surface segregation of dPS chains is prohibited for thick films when annealed at 270 °C.
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Affiliation(s)
- Jia-Wen Hong
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Yi-Qing Jian
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Yin-Ping Liao
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Hsiang-Ho Hung
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Tzu-Yen Huang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Andrew Nelson
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia
| | - I-Yu Tsao
- Institute of Materials Science and Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Chun-Ming Wu
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Ya-Sen Sun
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
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5
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Robertson M, Zhou Q, Ye C, Qiang Z. Developing Anisotropy in Self-Assembled Block Copolymers: Methods, Properties, and Applications. Macromol Rapid Commun 2021; 42:e2100300. [PMID: 34272778 DOI: 10.1002/marc.202100300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/23/2021] [Indexed: 01/03/2023]
Abstract
Block copolymers (BCPs) self-assembly has continually attracted interest as a means to provide bottom-up control over nanostructures. While various methods have been demonstrated for efficiently ordering BCP nanodomains, most of them do not generically afford control of nanostructural orientation. For many applications of BCPs, such as energy storage, microelectronics, and separation membranes, alignment of nanodomains is a key requirement for enabling their practical use or enhancing materials performance. This review focuses on summarizing research progress on the development of anisotropy in BCP systems, covering a variety of topics from established aligning techniques, resultant material properties, and the associated applications. Specifically, the significance of aligning nanostructures and the anisotropic properties of BCPs is discussed and highlighted by demonstrating a few promising applications. Finally, the challenges and outlook are presented to further implement aligned BCPs into practical nanotechnological applications, where exciting opportunities exist.
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Affiliation(s)
- Mark Robertson
- School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS, 39406, USA
| | - Qingya Zhou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Changhuai Ye
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Zhe Qiang
- School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS, 39406, USA
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6
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Yuan Q, Russell TP, Wang D. Self-Assembly Behavior of PS- b-P2VP Block Copolymers and Carbon Quantum Dots at Water/Oil Interfaces. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02422] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Qingqing Yuan
- State Key Laboratory of Organic−Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Thomas P. Russell
- State Key Laboratory of Organic−Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Polymer Science and Engineering Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Dong Wang
- State Key Laboratory of Organic−Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
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7
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Foster JC, Akar I, Grocott MC, Pearce AK, Mathers RT, O’Reilly RK. 100th Anniversary of Macromolecular Science Viewpoint: The Role of Hydrophobicity in Polymer Phenomena. ACS Macro Lett 2020; 9:1700-1707. [PMID: 33299653 PMCID: PMC7717397 DOI: 10.1021/acsmacrolett.0c00645] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 10/21/2020] [Indexed: 11/30/2022]
Abstract
The seemingly simple notion of the hydrophobic effect can be viewed from multiple angles involving theory, simulation, and experiments. This viewpoint examines five attributes of predictive models to enhance synthetic efforts as well as experimental methods to quantify hydrophobicity. In addition, we compare existing predictive models against experimental data for polymer surface tension, lower critical solution temperature, solution self-assembly morphology, and degradation behavior. Key conclusions suggest that both the Hildebrand solubility parameters (HSPs) and surface area-normalized Log P (Log P SA-1) values provide unique and complementary insights into polymer phenomena. In particular, HSPs appear to better describe bulk polymer phenomena for thermoplastics such as surface tension, while Log P SA-1 values are well-suited for describing and predicting the behavior of polymers in solution.
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Affiliation(s)
- Jeffrey C. Foster
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Irem Akar
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Marcus C. Grocott
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Amanda K. Pearce
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Robert T. Mathers
- Department
of Chemistry, Pennsylvania State University, New Kensington, Pennsylvania 15068, United States
| | - Rachel K. O’Reilly
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
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8
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Patterson AL, Yu B, Danielsen SPO, Davidson EC, Fredrickson GH, Segalman RA. Monomer Sequence Effects on Interfacial Width and Mixing in Self-Assembled Diblock Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02426] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Anastasia L. Patterson
- Materials Department, University of California, Santa Barbara, California 93106, United States
| | - Beihang Yu
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Scott P. O. Danielsen
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Emily C. Davidson
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Glenn H. Fredrickson
- Materials Department, University of California, Santa Barbara, California 93106, United States
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
- Materials Research Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Rachel A. Segalman
- Materials Department, University of California, Santa Barbara, California 93106, United States
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
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9
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Yang WC, Wu SH, Chen YF, Nelson A, Wu CM, Sun YS. Effects of the Density of Chemical Cross-links and Physical Entanglements of Ultraviolet-Irradiated Polystyrene Chains on Domain Orientation and Spatial Order of Polystyrene- block-Poly(methyl methacrylate) Nano-Domains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14017-14030. [PMID: 31577149 DOI: 10.1021/acs.langmuir.9b02054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ultraviolet irradiation (UVI) of varied duration caused cross-linking and neutralization of polystyrene (PS) homopolymers of molar mass (Mn) from 6 to 290 kg mol-1 on a silicon-oxide surface. An optimal neutral skin layer on the surface of the PS was obtained via brief UVI in air (UVIA), by which the PS had no preferential interaction with either block in the copolymer. UVI in an inert environment (gaseous dinitrogen) (UVIN) stabilized the PS layers via cross-linking and enabled the PS networks to have an effective adhesive contact with the underlying substrate. Thorough examination of domain orientations and spatial orders of a series of block copolymer, polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA), thin films deposited on these UVI-treated PS support layers yielded clear evidence that a dense layer of neutralized PS chains was required for the perpendicular orientation of PS-b-PMMA nanodomains. In particular, in addition to neutralization, two factors-the densities of physical entanglements and of chemical crosslinks-both in UVI-treated PS should be considered for the perpendicular orientation of nanolamellae and nanocylinders in symmetric and asymmetric PS-b-PMMA thin films. The density of physical entanglement in PS depends intrinsically on Mn of the PS, whereas the density of chemical cross-links was controlled with a varied duration of UVIN. Sufficiently large densities of physical entanglements and chemical cross-links can prevent PS-b-PMMA chains from penetrating through the neutral skin layer. The total density of physical entanglements and chemical cross-links required for the perpendicular orientation is correlated with the dimensions of the PS-b-PMMA chains.
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Affiliation(s)
- Wei-Chen Yang
- Department of Chemical and Materials Engineering , National Central University , No. 300, Zhongda Rd. , Zhongli District, Taoyuan City 32001 , Taiwan
| | - Song-Hao Wu
- Department of Chemical and Materials Engineering , National Central University , No. 300, Zhongda Rd. , Zhongli District, Taoyuan City 32001 , Taiwan
| | - Yi-Fang Chen
- Department of Chemical and Materials Engineering , National Central University , No. 300, Zhongda Rd. , Zhongli District, Taoyuan City 32001 , Taiwan
| | - Andrew Nelson
- Australian Nuclear Science and Technology Organisation , Locked Bag 2001 , Kirrawee DC , New South Wales 2232 , Australia
| | - Chun-Ming Wu
- National Synchrotron Radiation Research Center , 101 Hsin-Ann Road, Hsinchu Science Park , Hsinchu 30076 , Taiwan
| | - Ya-Sen Sun
- Department of Chemical and Materials Engineering , National Central University , No. 300, Zhongda Rd. , Zhongli District, Taoyuan City 32001 , Taiwan
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10
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Gil Haenelt T, Meyer A, Abetz C, Abetz V. Planet‐Like Nanostructures Formed by an ABC Triblock Terpolymer. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Taida Gil Haenelt
- Institute of Physical ChemistryUniversity of Hamburg Martin‐Luther‐King‐Platz 6 20146 Hamburg Germany
| | - Andreas Meyer
- Institute of Physical ChemistryUniversity of Hamburg Martin‐Luther‐King‐Platz 6 20146 Hamburg Germany
| | - Clarissa Abetz
- Helmholtz‐Zentrum GeesthachtInstitute of Polymer Research Max‐Planck‐Strasse 1 21502 Geesthacht Germany
| | - Volker Abetz
- Institute of Physical ChemistryUniversity of Hamburg Martin‐Luther‐King‐Platz 6 20146 Hamburg Germany
- Helmholtz‐Zentrum GeesthachtInstitute of Polymer Research Max‐Planck‐Strasse 1 21502 Geesthacht Germany
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11
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Patterson AL, Danielsen SPO, Yu B, Davidson EC, Fredrickson GH, Segalman RA. Sequence Effects on Block Copolymer Self-Assembly through Tuning Chain Conformation and Segregation Strength Utilizing Sequence-Defined Polypeptoids. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02298] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Grune E, Bareuther J, Blankenburg J, Appold M, Shaw L, Müller AHE, Floudas G, Hutchings LR, Gallei M, Frey H. Towards bio-based tapered block copolymers: the behaviour of myrcene in the statistical anionic copolymerisation. Polym Chem 2019. [DOI: 10.1039/c8py01711e] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The monoterpene myrcene is a bio-based diene monomer. The statistical, living anionic copolymerization with isoprene, styrene and 4-methylstyrene leads to gradient or tapered block copolymers, studied by in-situ NMR, SAXS and TEM.
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Affiliation(s)
- Eduard Grune
- Institute of Organic Chemistry
- Johannes Gutenberg University
- 55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
| | - Jennifer Bareuther
- Macromolecular Chemistry Department
- Technische Universität Darmstadt
- 64287 Darmstadt
- Germany
| | - Jan Blankenburg
- Institute of Organic Chemistry
- Johannes Gutenberg University
- 55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
| | - Michael Appold
- Macromolecular Chemistry Department
- Technische Universität Darmstadt
- 64287 Darmstadt
- Germany
| | - Lloyd Shaw
- Durham Centre for Soft Matter
- Department of Chemistry
- Durham University
- DH1 3LE Durham
- UK
| | - Axel H. E. Müller
- Institute of Organic Chemistry
- Johannes Gutenberg University
- 55128 Mainz
- Germany
| | - George Floudas
- Department of Physics
- University of Ioannina
- 45110 Ioannina
- Greece
- Max Planck Institute for Polymer Research
| | - Lian R. Hutchings
- Durham Centre for Soft Matter
- Department of Chemistry
- Durham University
- DH1 3LE Durham
- UK
| | - Markus Gallei
- Macromolecular Chemistry Department
- Technische Universität Darmstadt
- 64287 Darmstadt
- Germany
| | - Holger Frey
- Institute of Organic Chemistry
- Johannes Gutenberg University
- 55128 Mainz
- Germany
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13
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Jiang L, Nykypanchuk D, Ribbe AE, Rzayev J. One-Shot Synthesis and Melt Self-Assembly of Bottlebrush Copolymers with a Gradient Compositional Profile. ACS Macro Lett 2018; 7:619-623. [PMID: 35632966 DOI: 10.1021/acsmacrolett.8b00273] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Morphological control plays a central role in soft materials design. Herein, we report the synthesis of a gradient bottlebrush architecture and its role in directing molecular packing in the solid state. Bottlebrush copolymers with gradient interfaces were prepared via one-shot ring-opening metathesis polymerization of exo- and endo-norbornene-capped macromonomers. Kinetic studies revealed a gradient compositional profile separating the two blocks along the backbone. Side-chain symmetric gradient bottlebrush copolymers exhibited a strong tendency to assemble into cylindrical microstructures, in contrast to their block copolymer analogs with sharp interfaces. Such exquisite architectural control of the interfacial composition affords a delicate handle to direct macromolecular assembly.
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Affiliation(s)
- Liuyin Jiang
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Dmytro Nykypanchuk
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Alexander E. Ribbe
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003-4530, United States
| | - Javid Rzayev
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
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14
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Brendel JC, Schacher FH. Block Copolymer Self-Assembly in Solution-Quo Vadis? Chem Asian J 2018; 13:230-239. [DOI: 10.1002/asia.201701542] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Johannes C. Brendel
- Institute of Organic Chemistry and Macromolecular Chemistry; Friedrich-Schiller-University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich-Schiller-University Jena; Philosophenweg 7 07743 Jena Germany
| | - Felix H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry; 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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15
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Sun YS, Lin CF, Luo ST, Su CY. Block-Copolymer-Templated Hierarchical Porous Carbon Nanostructures with Nitrogen-Rich Functional Groups for Molecular Sensing. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31235-31244. [PMID: 28319361 DOI: 10.1021/acsami.6b15317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The self-assembly of a block copolymer offers access to micellar nanodomains with tunable dimensions and structural diversity through control of such molecular parameters as the volume fraction and molecular mass. We fabricated hierarchical porous carbon (HPC) nanostructures with bundles of aggregated nanospheres and with nitrogen-rich functional groups through pyrolysis of diblock copolymer micelles in multiple layers. The resultant HPC nanostructures with a considerable specific surface area serve as an excellent substrate for surface-enhanced Raman spectroscopy (SERS), coupled with fluorescence quenching, for molecular sensing of physically adsorbed Rhodamine 6G. The abundant nitrogen atoms terminating on the surface of HPC nanostructures play a critical role in promoting a large Raman enhancement generated via a chemical mechanism. Most importantly, the observed enhancement factors show a clear dependence on the mesoscale porosity within HPC nanostructures, indicating that the chemical enhancement can be steadily tuned with control over the interfacial areas as a function of the nanosphere size. The unique architecture of HPC nanostructures based on the construction of a building block of a well-defined network of core-shell nanospheres provides a new design strategy for fabricating SERS substrates.
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Affiliation(s)
- Ya-Sen Sun
- Department of Chemical and Materials Engineering and ‡Graduate Institute of Energy Engineering, National Central University , Taoyuan 32001, Taiwan
| | - Chien-Fu Lin
- Department of Chemical and Materials Engineering and ‡Graduate Institute of Energy Engineering, National Central University , Taoyuan 32001, Taiwan
| | - Shih-Ting Luo
- Department of Chemical and Materials Engineering and ‡Graduate Institute of Energy Engineering, National Central University , Taoyuan 32001, Taiwan
| | - Ching-Yuan Su
- Department of Chemical and Materials Engineering and ‡Graduate Institute of Energy Engineering, National Central University , Taoyuan 32001, Taiwan
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16
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Im H, Oh Y, Cho HW, Kim J, Paeng K, Sung BJ. The spatial arrangement of a single nanoparticle in a thin polymer film and its effect on the nanoparticle diffusion. SOFT MATTER 2017; 13:5897-5904. [PMID: 28766660 DOI: 10.1039/c7sm01115f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The spatial arrangement of nanoparticles (NPs) within thin polymer films may influence their properties such as the glass transition temperature. Questions regarding what may affect the spatial arrangement of NPs, however, still remain unanswered at a molecular level. In this work, we perform molecular dynamics simulations for a free-standing thin polymer film with a single NP. We find from simulations that depending on the NP size and the inter-particle interaction between the NP and polymers, one may control the spatial arrangement of the NP. When the interaction between the NP and polymers is sufficiently attractive (repulsive), the NP is likely to be placed at the center (at the surface) of the thin film in equilibrium. Interestingly, for a moderate interaction between the NP and polymers, the first-order transition occurs in the spatial arrangement of the NP as one increases the NP size: a small NP prefers the surface of the polymer film whereas a large NP prefers the center. Such a first-order transition is corroborated by calculating the free energy of the NP as a function of the position and can be understood in terms of a sixth-order Landau free energy. More interestingly, the diffusion of the NP also changes drastically due to the first-order transition in the spatial arrangement. The NP diffusion is enhanced drastically (more than expected in bulk polymer melts) as the NP is shifted to the polymer film surface.
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Affiliation(s)
- Hesang Im
- Department of Chemistry and Research Institute for Basic Science, Sogang University, Seoul 04107, Republic of Korea.
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17
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A versatile nanoarray electrode produced from block copolymer thin films for specific detection of proteins. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.07.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Patterson JP, Xu Y, Moradi MA, Sommerdijk NAJM, Friedrich H. CryoTEM as an Advanced Analytical Tool for Materials Chemists. Acc Chem Res 2017; 50:1495-1501. [PMID: 28665585 PMCID: PMC5518272 DOI: 10.1021/acs.accounts.7b00107] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Indexed: 01/02/2023]
Abstract
Morphology plays an essential role in chemistry through the segregation of atoms and/or molecules into different phases, delineated by interfaces. This is a general process in materials synthesis and exploited in many fields including colloid chemistry, heterogeneous catalysis, and functional molecular systems. To rationally design complex materials, we must understand and control morphology evolution. Toward this goal, we utilize cryogenic transmission electron microscopy (cryoTEM), which can track the structural evolution of materials in solution with nanometer spatial resolution and a temporal resolution of <1 s. In this Account, we review examples of our own research where direct observations by cryoTEM have been essential to understanding morphology evolution in macromolecular self-assembly, inorganic nucleation and growth, and the cooperative evolution of hybrid materials. These three different research areas are at the heart of our approach to materials chemistry where we take inspiration from the myriad examples of complex materials in Nature. Biological materials are formed using a limited number of chemical components and under ambient conditions, and their formation pathways were refined during biological evolution by enormous trial and error approaches to self-organization and biomineralization. By combining the information on what is possible in nature and by focusing on a limited number of chemical components, we aim to provide an essential insight into the role of structure evolution in materials synthesis. Bone, for example, is a hierarchical and hybrid material which is lightweight, yet strong and hard. It is formed by the hierarchical self-assembly of collagen into a macromolecular template with nano- and microscale structure. This template then directs the nucleation and growth of oriented, nanoscale calcium phosphate crystals to form the composite material. Fundamental insight into controlling these structuring processes will eventually allow us to design such complex materials with predetermined and potentially unique properties.
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Affiliation(s)
| | - Yifei Xu
- Laboratory of Materials and
Interface Chemistry & Centre for Multiscale Electron Microscopy
Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven 5600 MB, The
Netherlands
- Institute for Complex Molecular
Systems, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands
| | - Mohammad-Amin Moradi
- Laboratory of Materials and
Interface Chemistry & Centre for Multiscale Electron Microscopy
Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven 5600 MB, The
Netherlands
- Institute for Complex Molecular
Systems, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands
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19
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Brown JR, Seo Y, Sides SW, Hall LM. Unique Phase Behavior of Inverse Tapered Block Copolymers: Self-Consistent Field Theory and Molecular Dynamics Simulations. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00522] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jonathan R. Brown
- William
G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, United States
| | - Youngmi Seo
- William
G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, United States
| | - Scott W. Sides
- Tech-X Corporation, 5621 Arapahoe Ave. Suite A, Boulder, Colorado 80303, United States
| | - Lisa M. Hall
- William
G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, United States
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20
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Wang HS, Khan A, Choe Y, Huh J, Bang J. Architectural Effects of Organic Nanoparticles on Block Copolymer Orientation. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00865] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Hyun Suk Wang
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Anzar Khan
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Youngson Choe
- Department
of Chemical Engineering, Pusan National University, Kumjeong-ku, Busan 609-735, Republic of Korea
| | - June Huh
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Joona Bang
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
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21
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Levine WG, Seo Y, Brown JR, Hall LM. Effect of sequence dispersity on morphology of tapered diblock copolymers from molecular dynamics simulations. J Chem Phys 2017; 145:234907. [PMID: 28010074 DOI: 10.1063/1.4972141] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Tapered diblock copolymers are similar to typical AB diblock copolymers but have an added transition region between the two blocks which changes gradually in composition from pure A to pure B. This tapered region can be varied from 0% (true diblock) to 100% (gradient copolymer) of the polymer length, and this allows some control over the microphase separated domain spacing and other material properties. We perform molecular dynamics simulations of linearly tapered block copolymers with tapers of various lengths, initialized from fluids density functional theory predictions. To investigate the effect of sequence dispersity, we compare systems composed of identical polymers, whose taper has a fixed sequence that most closely approximates a linear gradient, with sequentially disperse polymers, whose sequences are created statistically to yield the appropriate ensemble average linear gradient. Especially at high segregation strength, we find clear differences in polymer conformations and microstructures between these systems. Importantly, the statistical polymers are able to find more favorable conformations given their sequence, for instance, a statistical polymer with a larger fraction of A than the median will tend towards the A lamellae. The conformations of the statistically different polymers can thus be less stretched, and these systems have higher overall density. Consequently, the lamellae formed by statistical polymers have smaller domain spacing with sharper interfaces.
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Affiliation(s)
- William G Levine
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
| | - Youngmi Seo
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
| | - Jonathan R Brown
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
| | - Lisa M Hall
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
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22
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Seo Y, Brown JR, Hall LM. Diffusion of Selective Penetrants in Interfacially Modified Block Copolymers from Molecular Dynamics Simulations. ACS Macro Lett 2017; 6:375-380. [PMID: 35610859 DOI: 10.1021/acsmacrolett.7b00023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To show the influence of the interface on structure and dynamics of microphase separated polymer systems, we study interfacially modified AB block copolymers with small molecule penetrants. The polymers have a random midblock or tapered midblock whose composition varies from pure A to pure B (or from pure B to pure A for an inverse taper) between two pure blocks of A and B. We perform simple coarse-grained molecular dynamics simulations of symmetric polymers that form lamellae. With normal tapering, both polymer and penetrant diffusion parallel to the lamellae increases as taper length increases. Inverse tapered polymers exist in different conformational states (e.g., stretched vs folded back and forth across the interface) with different dynamic behavior, leading to nonmonotonic trends in their diffusion. However, the local mixing of monomers (rather than polymer conformation) appears to be the most important factor in determining penetrant diffusion.
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Affiliation(s)
- Youngmi Seo
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, Ohio 43210, United States
| | - Jonathan R. Brown
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, Ohio 43210, United States
| | - Lisa M. Hall
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, Ohio 43210, United States
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23
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Radlauer MR, Sinturel C, Asai Y, Arora A, Bates FS, Dorfman KD, Hillmyer MA. Morphological Consequences of Frustration in ABC Triblock Polymers. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02112] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Christophe Sinturel
- ICMN,
UMR 7374 CNRS, Université d’Orléans, 1 B rue de la Férollerie, 45071 Orléans,
Cedex 2, France
| | - Yusuke Asai
- Department
of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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24
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Brown JR, Seo Y, Maula TAD, Hall LM. Fluids density functional theory and initializing molecular dynamics simulations of block copolymers. J Chem Phys 2016; 144:124904. [DOI: 10.1063/1.4943982] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jonathan R. Brown
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
| | - Youngmi Seo
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
| | - Tiara Ann D. Maula
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
| | - Lisa M. Hall
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, USA
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25
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Petrelli A, Borsali R, Fort S, Halila S. Redox tunable delivery systems: sweet block copolymer micelles via thiol–(bromo)maleimide conjugation. Chem Commun (Camb) 2016; 52:12202-12205. [DOI: 10.1039/c6cc07136h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A tunable release of encapsulated Nile Red from xyloglucan-oligosaccharides-block-polycaprolactone obtained by thiol–(bromo)maleimide click reaction was successfully achieved by mixing their Gluathione-responsiveness.
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Affiliation(s)
| | | | | | - Sami Halila
- CERMAV
- CNRS
- Université Grenoble Alpes
- 38000 Grenoble
- France
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26
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Yusa S, Ohno S, Honda T, Imoto H, Nakao Y, Naka K, Nakamura Y, Fujii S. Synthesis of silsesquioxane-based element-block amphiphiles and their self-assembly in water. RSC Adv 2016. [DOI: 10.1039/c6ra13995g] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The self-assembly of silsesquioxane-based amphiphiles in water was investigated.
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Affiliation(s)
- S. Yusa
- Department of Applied Chemistry
- University of Hyogo
- Himeji
- Japan
| | - S. Ohno
- Department of Applied Chemistry
- University of Hyogo
- Himeji
- Japan
| | - T. Honda
- Department of Applied Chemistry
- University of Hyogo
- Himeji
- Japan
| | - H. Imoto
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Y. Nakao
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - K. Naka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Y. Nakamura
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka Institute of Technology
- Osaka 535-8585
- Japan
| | - S. Fujii
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka Institute of Technology
- Osaka 535-8585
- Japan
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27
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Seo Y, Brown JR, Hall LM. Effect of Tapering on Morphology and Interfacial Behavior of Diblock Copolymers from Molecular Dynamics Simulations. Macromolecules 2015. [DOI: 10.1021/ma502309h] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Youngmi Seo
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 W Woodruff Ave., Columbus, Ohio 43210, United States
| | - Jonathan R. Brown
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 W Woodruff Ave., Columbus, Ohio 43210, United States
| | - Lisa M. Hall
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 W Woodruff Ave., Columbus, Ohio 43210, United States
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28
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Liu M, Geng Y, Wang Q, Lee YI, Hao J, Liu HG. Unique self-assembly behavior of amphiphilic block copolymers at liquid/liquid interfaces. RSC Adv 2015. [DOI: 10.1039/c4ra13281e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Various microstructures of amphiphilic block copolymers were fabricated at the liquid/liquid interfaces.
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Affiliation(s)
- Mei Liu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Yuanyuan Geng
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Qian Wang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Yong-Ill Lee
- Anastro Laboratory
- Department of Chemistry
- Changwon National University
- Changwon 641-773
- Korea
| | - Jingcheng Hao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Hong-Guo Liu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
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29
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Wang Q, Zhao X, Zhang XK, Lee YI, Liu HG. Fabrication of porous thin films of block copolymer at the liquid/liquid interface and construction of composite films doped with noble metal nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra12001b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A porous polymer film was fabricated at a liquid/liquid interface that can be used as a matrix to form various composite films.
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Affiliation(s)
- Qian Wang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Xingjuan Zhao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Xiao-Kai Zhang
- College of Physics and Electronics
- Shandong Normal University
- Jinan 250014
- P. R. China
| | - Yong-Ill Lee
- Anastro Laboratory
- Department of Chemistry
- Changwon National University
- Changwon 641-773
- Korea
| | - Hong-Guo Liu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
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30
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Wang Q, Zhao X, Lee YI, Liu HG. A new and facile way to fabricate catalytically active block copolymer/Au nanoparticle multilayer thin films at the air/liquid interface. RSC Adv 2015. [DOI: 10.1039/c5ra16370f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A catalytically active multilayer film of PB-b-P2VP doped with Au nanoparticles was fabricated through liquid/liquid interfacial mass transfer, self-assembly in an aqueous phase and adsorption at the air/liquid interface.
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Affiliation(s)
- Qian Wang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Xingjuan Zhao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Yong-Ill Lee
- Anastro Laboratory
- Department of Chemistry
- Changwon National University
- Changwon 641-773
- Korea
| | - Hong-Guo Liu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
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31
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Tunable nanoporous membranes with chemically-tailored pore walls from triblock polymer templates. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.07.021] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Seguini G, Giammaria TJ, Lupi FF, Sparnacci K, Antonioli D, Gianotti V, Vita F, Placentino IF, Hilhorst J, Ferrero C, Francescangeli O, Laus M, Perego M. Thermally induced self-assembly of cylindrical nanodomains in low molecular weight PS-b-PMMA thin films. NANOTECHNOLOGY 2014; 25:045301. [PMID: 24394198 DOI: 10.1088/0957-4484/25/4/045301] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The phase behaviour in thin films of an asymmetric polystyrene-b-polymethylmethacrylate (PS-b-PMMA) block copolymer with a molecular weight of 39 kg mol(-1) was assessed at a wide range of temperatures and times. Cylindrical PMMA structures featuring a diameter close to 10 nm and perpendicularly oriented with respect to the substrate were obtained at 180 °C in relatively short annealing times (t ≤ 30 min) by means of a simple thermal treatment performed in a standard rapid thermal processing machine.
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Affiliation(s)
- Gabriele Seguini
- Laboratorio MDM, IMM-CNR Via C. Olivetti 2, I-20864 Agrate Brianza, Italy
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33
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Brown JR, Sides SW, Hall LM. Phase Behavior of Tapered Diblock Copolymers from Self-Consistent Field Theory. ACS Macro Lett 2013; 2:1105-1109. [PMID: 35606975 DOI: 10.1021/mz400546h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Tapered diblock copolymers are similar to AB diblock copolymers, but the sharp junction between the A and B blocks is replaced with a gradient region in which composition varies from mostly A to mostly B along its length. The A side of the taper can be attached to the A block (normal) or the B block (inverse). We demonstrate how taper length and direction affect the phase diagrams and density profiles using self-consistent field theory. Adding tapers shifts the order-disorder transition to lower temperature versus the diblock, and this effect is larger for longer tapers and for inverse tapers. However, tapered systems' phase diagrams and interfacial profiles do not simply match those of diblocks at a shifted effective temperature. For instance, we find that normal tapering widens the bicontinuous gyroid region of the phase diagram, while inverse tapering narrows this region, apparently due to differences in polymer organization at the interfaces.
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Affiliation(s)
- Jonathan R. Brown
- William G. Lowrie
Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W 19th Avenue, Columbus, Ohio 43210, United States
| | - Scott W. Sides
- National Renewable Energy Laboratory (NREL), 15013 Denver West Parkway, Golden, Colorado 80401, United States
| | - Lisa M. Hall
- William G. Lowrie
Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W 19th Avenue, Columbus, Ohio 43210, United States
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34
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Luo M, Epps TH. Directed Block Copolymer Thin Film Self-Assembly: Emerging Trends in Nanopattern Fabrication. Macromolecules 2013. [DOI: 10.1021/ma401112y] [Citation(s) in RCA: 209] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ming Luo
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Thomas H. Epps
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
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