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Priming self-assembly pathways by stacking block copolymers. Nat Commun 2022; 13:6947. [PMID: 36376380 PMCID: PMC9663688 DOI: 10.1038/s41467-022-34729-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 11/04/2022] [Indexed: 11/16/2022] Open
Abstract
Block copolymers spontaneously self-assemble into well-defined nanoscale morphologies. Yet equilibrium assembly gives rise to a limited set of structures. Non-equilibrium strategies can, in principle, expand diversity by exploiting self-assembly's responsive nature. In this vein, we developed a pathway priming strategy combining control of thin film initial configurations and ordering history. We sequentially coat distinct materials to form prescribed initial states, and use thermal annealing to evolve these manifestly non-equilibrium states through the assembly landscape, traversing normally inaccessible transient structures. We explore the enormous associated hyperspace, spanning processing (annealing temperature and time), material (composition and molecular weight), and layering (thickness and order) dimensions. We demonstrate a library of exotic non-native morphologies, including vertically-oriented perforated lamellae, aqueduct structures (vertical lamellar walls with substrate-pinned perforations), parapets (crenellated lamellae), and networks of crisscrossing lamellae. This enhanced structural control can be used to modify functional properties, including accessing regimes that surpass their equilibrium analogs.
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2
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Crothers AR, Kusoglu A, Radke CJ, Weber AZ. Influence of Mesoscale Interactions on Proton, Water, and Electrokinetic Transport in Solvent-Filled Membranes: Theory and Simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10362-10374. [PMID: 35969508 DOI: 10.1021/acs.langmuir.2c00706] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Transport of protons and water through water-filled, phase-separated cation-exchange membranes occurs through a network of interconnected nanoscale hydrophilic aqueous domains. This paper uses numerical simulations and theory to explore the role of the mesoscale network on water, proton, and electrokinetic transport in perfluorinated sulfonic acid (PFSA) membranes, pertinent to electrochemical energy-conversion devices. Concentrated-solution theory describes microscale transport. Network simulations model mesoscale effects and ascertain macroscopic properties. An experimentally consistent 3D Voronoi-network topology characterizes the interconnected channels in the membrane. Measured water, proton, and electrokinetic transport properties from literature validate calculations of macroscopic properties from network simulations and from effective-medium theory. The results demonstrate that the hydrophilic domain size affects the various microscale, domain-level transport modes dissimilarly, resulting in different distributions of microscale coefficients for each mode of transport. As a result, the network mediates the transport of species nonuniformly with dissimilar calculated tortuosities for water, proton, and electrokinetic transport coefficients (i.e., 4.7, 3.0, and 6.1, respectively, at a water content of 8 H2O molecules per polymer charge equivalent). The dominant water-transport pathways across the membrane are different than those taken by the proton cation. Finally, the distribution of transport properties across the network induces local electrokinetic flows that couple water and proton transport; specifically, local electrokinetic transport induces water chemical-potential gradients that decrease macroscopic conductivity by up to a factor of 3. Macroscopic proton, water, and electrokinetic transport coefficients depend on the collective microscale transport properties of all modes of transport and their distribution across the hydrophilic domain network.
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Affiliation(s)
- Andrew R Crothers
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720 United States
- Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Ahmet Kusoglu
- Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Clayton J Radke
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720 United States
- Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Adam Z Weber
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720 United States
- Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
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3
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Subramanian A, Tiwale N, Lee WI, Nam CY. Templating Functional Materials Using Self-Assembled Block Copolymer Thin-Film for Nanodevices. FRONTIERS IN NANOTECHNOLOGY 2021. [DOI: 10.3389/fnano.2021.766690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The nanomorphologies and nanoarchitectures that can be synthesized using block copolymer (BCP) thin-film self-assembly have inspired a variety of new applications, which offer various advantages, such as, small device footprint, low operational power and enhanced device performance. Imperative for these applications, however, is the ability to transform these small polymeric patterns into useful inorganic structures. BCP-templated inorganic nanostructures have shown the potential for use as active materials in various electronic device applications, including, field-effect transistors, photodetectors, gas sensors and many more. This article reviews various strategies that have been implemented in the past decade to fabricate devices at nanoscale using block copolymer thin films.
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4
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Xu H, Mahanthappa MK. Ionic Conductivities of Broad Dispersity Lithium Salt-Doped Polystyrene/Poly(ethylene oxide) Triblock Polymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01100] [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)
- Hongyun Xu
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Avenue Southeast, Minneapolis, Minnesota 55455, United States
| | - Mahesh K. Mahanthappa
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Avenue Southeast, Minneapolis, Minnesota 55455, United States
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5
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Bhattacharya D, Kole S, Kizilkaya O, Strzalka J, Angelopoulou PP, Sakellariou G, Cao D, Arges CG. Electrolysis on a Chip with Tunable Thin Film Nanostructured PGM Electrocatalysts Generated from Self-Assembled Block Copolymer Templates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100437. [PMID: 33991064 DOI: 10.1002/smll.202100437] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Self-assembled block copolymers are promising templates for fabricating thin film materials with tuned periodic feature sizes and geometry at the nanoscale. Here, a series of nanostructured platinum and iridium oxide electrocatalysts templated from poly(styrene)-block-poly(vinyl pyridine) (PSbPVP) block copolymers via an incipient wetness impregnation (IWI) pathway is reported. Both nanowire and nanocylinder electrocatalysts of varying feature sizes are assessed and higher catalyst loadings are achieved by the alkylation of the pyridine moieties in the PVP block prior to IWI. Electrocatalyst evaluations featuring hydrogen pump and water electrolysis demonstrations are carried out on interdigitated electrode (IDE) chips flexible with liquid supporting electrolytes and thin film polymer electrolytes. Notably, the mass activities of the nanostructured electrocatalysts from alkylated block copolymer templates are 35%-94% higher than electrocatalysts from non-alkylated block copolymer templates. Standing cylinder nanostructures lead to higher mass activities than lamellar variants despite their not having the largest surface area per unit catalyst loading demonstrating that mesostructure architectures have a profound impact on reactivity. Overall, IDE chips with model thin film electrocatalysts prepared from self-assembled block copolymers offer a high-throughput experimental method for correlating electrocatalyst nanostructure and composition to electrochemical reactivity.
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Affiliation(s)
- Deepra Bhattacharya
- Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Subarna Kole
- Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Orhan Kizilkaya
- Center for Advanced Microstructures and Devices, Louisiana State University, Baton Rouge, LA, 70806, USA
| | - Joseph Strzalka
- X-Ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Polyxeni P Angelopoulou
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, 15771, Greece
| | - Georgios Sakellariou
- Department of Chemistry, National and Kapodistrian University of Athens, Athens, 15771, Greece
| | - Dongmei Cao
- Shared Instrumentation Facility, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Christopher G Arges
- Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
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6
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Song P, Chen Y, Li Y, Ma J, Wang L, Wang R. A One-Pot Strategy to Synthesize Block Copolyesters from Monomer Mixtures Using a Hydroxy-Functionized Ionic Liquid. Macromol Rapid Commun 2020; 41:e2000436. [PMID: 33052626 DOI: 10.1002/marc.202000436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/04/2020] [Indexed: 12/22/2022]
Abstract
One-pot transformation of monomer mixtures into block copolymers remains a key challenge. Herein, a metal-free route to prepare block copolymers from monomer mixtures by a hydroxyl functionalized ionic liquid of 3-(2-hydroxyl-ethyl)-1-methylimidazolium bromide (HEMIMB) is described. HEMIMB can bridge two catalytic cycles including ring-opening alternating copolymerization (ROAC) of phthalic anhydride (PA) with epoxides and ring-opening polymerization (ROP) of L-lactide (LA), and enable a selective copolymerization from PA, LA, and epoxides. The selective copolymerization depends on the presence of PA in mixed feedstocks, exhibits the first ROAC of PA with epoxides and then ROP of LA to the formation of block polyesters in one-pot strategy. This work is beneficial to the development of metal-free catalysts for sequence-controlled polymerization that enable block architectures from mixtures of monomers.
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Affiliation(s)
- Pengfei Song
- College of Chemistry and Chemical EngineeringKey Laboratory of Eco-functional Polymer Materials of the Ministry of EducationKey Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceGansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Northwest Normal University, Lanzhou, 730070, China
| | - Yalun Chen
- College of Chemistry and Chemical EngineeringKey Laboratory of Eco-functional Polymer Materials of the Ministry of EducationKey Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceGansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Northwest Normal University, Lanzhou, 730070, China
| | - Yongli Li
- College of Chemistry and Chemical EngineeringKey Laboratory of Eco-functional Polymer Materials of the Ministry of EducationKey Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceGansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Northwest Normal University, Lanzhou, 730070, China
| | - Juping Ma
- College of Chemistry and Chemical EngineeringKey Laboratory of Eco-functional Polymer Materials of the Ministry of EducationKey Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceGansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Northwest Normal University, Lanzhou, 730070, China
| | - Liyan Wang
- College of Chemistry and Chemical EngineeringKey Laboratory of Eco-functional Polymer Materials of the Ministry of EducationKey Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceGansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Northwest Normal University, Lanzhou, 730070, China
| | - Rongmin Wang
- College of Chemistry and Chemical EngineeringKey Laboratory of Eco-functional Polymer Materials of the Ministry of EducationKey Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceGansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Northwest Normal University, Lanzhou, 730070, China
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7
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Kambe Y, Arges CG, Czaplewski DA, Dolejsi M, Krishnan S, Stoykovich MP, de Pablo JJ, Nealey PF. Role of Defects in Ion Transport in Block Copolymer Electrolytes. NANO LETTERS 2019; 19:4684-4691. [PMID: 31250653 DOI: 10.1021/acs.nanolett.9b01758] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ion conducting block copolymers can overcome traditional limitations of homopolymer electrolytes by phase separating into nanoarchitectures that can be simultaneously optimized for two or more orthogonal material properties such as high ionic conductivity and mechanical stability. A key challenge in understanding the ion transport properties of these materials is the difficulty of extracting structure-function relationships without having complete knowledge of all nanoscale transport pathways in bulk samples. Here we demonstrate a method for deriving structure-transport relationships for ion conducting block copolymers using thin films and interdigitated electrodes. Well-defined and directly imaged structure in films of poly(styrene)-block-poly(2-vinylpyridine) is controlled using techniques of directed self-assembly then the poly(2-vinylpyridine) is selectively converted into an ion conductor. The ion conductivity is found to be directly proportional to the total number of connected paths between electrodes and the path length. A single defect such as a dislocation anywhere in the path of an ion conducting route disconnects and precludes that pathway from contributing to the conductivity and results in an increase in the dielectric parameter of the film. When all the ion conduction pathways are blocked between electrodes, the conductivity is negligible, 4 orders of magnitude lower compared to a completely connected morphology and the dielectric parameter increases by a factor of 50. These results have profound implications for the interpretation, design, and processing of block copolymer electrolytes for applications as ion conducting membranes.
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Affiliation(s)
- Yu Kambe
- Pritzker School of Molecular Engineering , University of Chicago , 5640 S. Ellis Avenue , Chicago , Illinois 60637 , United States
- Center for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 S. Cass Ave nue, Lemont , Illinois 60439 , United States
| | - Christopher G Arges
- Cain Department of Chemical Engineering , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - David A Czaplewski
- Center for Nanoscale Materials , Argonne National Laboratory , 9700 S. Cass Avenue , Lemont , Illinois 60439 , United States
| | - Moshe Dolejsi
- Pritzker School of Molecular Engineering , University of Chicago , 5640 S. Ellis Avenue , Chicago , Illinois 60637 , United States
- Center for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 S. Cass Ave nue, Lemont , Illinois 60439 , United States
| | - Satya Krishnan
- Pritzker School of Molecular Engineering , University of Chicago , 5640 S. Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Mark P Stoykovich
- Pritzker School of Molecular Engineering , University of Chicago , 5640 S. Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Juan J de Pablo
- Pritzker School of Molecular Engineering , University of Chicago , 5640 S. Ellis Avenue , Chicago , Illinois 60637 , United States
- Center for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 S. Cass Ave nue, Lemont , Illinois 60439 , United States
| | - Paul F Nealey
- Pritzker School of Molecular Engineering , University of Chicago , 5640 S. Ellis Avenue , Chicago , Illinois 60637 , United States
- Center for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 S. Cass Ave nue, Lemont , Illinois 60439 , United States
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8
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Subramanian A, Doerk G, Kisslinger K, Yi DH, Grubbs RB, Nam CY. Three-dimensional electroactive ZnO nanomesh directly derived from hierarchically self-assembled block copolymer thin films. NANOSCALE 2019; 11:9533-9546. [PMID: 31049522 DOI: 10.1039/c9nr00206e] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Three-dimensional (3D) nanoarchitectures can offer enhanced material properties, such as large surface areas that amplify the structures' interaction with environments making them useful for various sensing applications. Self-assembled block copolymers (BCPs) can readily generate various 3D nanomorphologies, but their conversion to useful inorganic materials remains one of the critical challenges against the practical application of self-assembled BCPs. This work reports the vapor-phase infiltration synthesis of optoelectrically active, 3D ZnO nanomesh architectures by combining hierarchical successive stacking of self-assembled, lamellar-phase polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) BCP thin films and a modified block-selective vapor-phase material infiltration protocol. The 3D ZnO nanomesh exhibits optoelectrical functionality, featuring stack-layer-number-dependent electrical conductance resembling the percolative transport originating from the intrinsic morphological network connectivity of the lamellar BCP pattern with symmetric block ratio. The results not only illustrate the first demonstration of electrical functionality based on the ZnO nanoarchitecture directly generated by the infiltration synthesis in self-assembled BCP thin films but also present a new, large-area scalable, metal oxide thin film nanoarchitecture fabrication method utilizing industry-compatible polymer solution coating and atomic layer deposition. Given the large surface area, three-dimensional porosity, and readily scalable fabrication procedures, the generated ZnO nanomesh promises potential applications as an efficient active medium in chemical and optical sensors.
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Affiliation(s)
- Ashwanth Subramanian
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, USA
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9
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Du D, Yang X, Yang Y, Zhao Y, Wang Y. Silver Nanowire Ink for Flexible Circuit on Textiles. MICROMACHINES 2019; 10:mi10010042. [PMID: 30634437 PMCID: PMC6356527 DOI: 10.3390/mi10010042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 01/03/2019] [Accepted: 01/07/2019] [Indexed: 11/21/2022]
Abstract
Low cost electronics implemented in textiles could pave the way to a fully new generation of smart products in the fields of healthcare, sport, fashion, and safety. Although many methods have found their way into the market, many problems still need to be solved and much progress has to be made to enable the commercial exploitation of such products. In this paper, silver nanowires of 60–100 nm in diameter and 8–15 μm in length were achieved by the polyol solvothermal method, and aqueous silver nanowire conductive inks were prepared with the synthesized silver nanowires as the conductive phase, in the presence of polyaniline, guar, and hydrochloric acid. The conductive inks were printed on cotton fabric substrate by screen printing process. The effects of the amount of silver nanowires, layers of coating, and treatment temperature on the microstructure and electrical properties of samples were investigated by scanning electron microscopy and the four-point probe method. The results show that the conductivity and densification of the samples increased with increased amount of silver nanowires, layers of coating, and treatment temperature. The heat treatment helped to improve densification of the silver nanowires and conductivity of the sample. The resistance of the samples increased after bending due to loosening of the overlap between the silver nanowires.
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Affiliation(s)
- Dexi Du
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Xing Yang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Yonglan Yang
- Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China.
| | - Yuzhen Zhao
- Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Yuehui Wang
- Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China.
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10
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Kim JY, Jin HM, Jeong SJ, Chang T, Kim BH, Cha SK, Kim JS, Shin DO, Choi JY, Kim JH, Yang GG, Jeon S, Lee YG, Kim KM, Shin J, Kim SO. Bimodal phase separated block copolymer/homopolymer blends self-assembly for hierarchical porous metal nanomesh electrodes. NANOSCALE 2017; 10:100-108. [PMID: 29210423 DOI: 10.1039/c7nr07178g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Transparent conducting electrodes (TCEs) are essential components in various optoelectronic devices. Nanostructured metallic thin film is one of the promising candidates to complement current metal oxide films, such as ITO, where high cost rare earth elements have been a longstanding issue. Herein, we present that multiscale porous metal nanomesh thin films prepared by bimodal self-assembly of block copolymer (BCP)/homopolymer blends may offer a new opportunity for TCE. This hierarchical concurrent self-assembly consists of macrophase separation between BCP and homopolymer as well as microphase separation of BCP, and thus provides a straightforward spontaneous production of a highly porous multiscale pattern over an arbitrary large area. Employing a conventional pattern transfer process, we successfully demonstrated a multiscale highly porous metallic thin film with reasonable optical transparency, electro-conductance, and large-area uniformity, taking advantage of low loss light penetration through microscale pores and significant suppression of light reflection at the nanoporous structures. This well-defined controllable bimodal self-assembly can offer valuable opportunities for many different applications, including optoelectronics, energy harvesting, and membranes.
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Affiliation(s)
- Ju Young Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea.
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11
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Park S, Tsarkova LA. Surface Roughness-Mediated Ordering in Block Copolymer Films toward Spatially Controlled Patterns. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01185] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sungjune Park
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27695, United States
| | - Larisa A. Tsarkova
- Faculty
of Chemistry, Chair of Colloid Chemistry, Moscow State University, GSP-1, 1-3 Leninskiye Gory, 119991 Moscow 1, Russia
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12
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Sethuraman V, Mogurampelly S, Ganesan V. Multiscale Simulations of Lamellar PS–PEO Block Copolymers Doped with LiPF6 Ions. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00125] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Vaidyanathan Sethuraman
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Santosh Mogurampelly
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Venkat Ganesan
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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13
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Chintapalli M, Higa K, Chen XC, Srinivasan V, Balsara NP. Simulation of local ion transport in lamellar block copolymer electrolytes based on electron micrographs. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24268] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mahati Chintapalli
- Department of Materials Science and EngineeringUniversity of CaliforniaBerkeley California94720
- Materials Sciences DivisionLawrence Berkeley National LaboratoryBerkeley California94720
| | - Kenneth Higa
- Energy Storage and Distributed Resources DivisionLawrence Berkeley National LaboratoryBerkeley California94720
| | - X. Chelsea Chen
- Materials Sciences DivisionLawrence Berkeley National LaboratoryBerkeley California94720
| | - Venkat Srinivasan
- Energy Storage and Distributed Resources DivisionLawrence Berkeley National LaboratoryBerkeley California94720
| | - Nitash P. Balsara
- Materials Sciences DivisionLawrence Berkeley National LaboratoryBerkeley California94720
- Energy Storage and Distributed Resources DivisionLawrence Berkeley National LaboratoryBerkeley California94720
- Department of Chemical and Biomolecular EngineeringUniversity of CaliforniaBerkeley California94720
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14
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Wang X, Chintapalli M, Newstein MC, Balsara NP, Garetz BA. Characterization of a Block Copolymer with a Wide Distribution of Grain Sizes. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01380] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xin Wang
- Department of Chemical
and Biomolecular Engineering and ‡Department of Electrical and Computer
Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, United States
- Department of Materials Science and Engineering and ∥Department of
Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and #Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Mahati Chintapalli
- Department of Chemical
and Biomolecular Engineering and ‡Department of Electrical and Computer
Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, United States
- Department of Materials Science and Engineering and ∥Department of
Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and #Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Maurice C. Newstein
- Department of Chemical
and Biomolecular Engineering and ‡Department of Electrical and Computer
Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, United States
- Department of Materials Science and Engineering and ∥Department of
Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and #Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Nitash P. Balsara
- Department of Chemical
and Biomolecular Engineering and ‡Department of Electrical and Computer
Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, United States
- Department of Materials Science and Engineering and ∥Department of
Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and #Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Bruce A. Garetz
- Department of Chemical
and Biomolecular Engineering and ‡Department of Electrical and Computer
Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, United States
- Department of Materials Science and Engineering and ∥Department of
Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and #Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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15
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Park S, Cheng X, Böker A, Tsarkova L. Hierarchical Manipulation of Block Copolymer Patterns on 3D Topographic Substrates: Beyond Graphoepitaxy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:6900-5. [PMID: 27270877 DOI: 10.1002/adma.201601098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/25/2016] [Indexed: 05/25/2023]
Abstract
Templates of complex nanopatterns in a form of hierarchically sequenced dots and stripes can be generated in block copolymer films on lithography-free 3D topographic substrates. The approach exploits thickness- and swelling-responsive morphological behavior of block copolymers, and demonstrates novel possibilities of topography-guided registration of nanopatterns due to periodic confinement and spontaneous orthogonal flow-fields.
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Affiliation(s)
- Sungjune Park
- DWI-Leibniz-Institute für Interaktiven Materialien and Institut für Physikalische Chemie, RWTH Aachen University, Forckenbeckstraße 50, 52056, Aachen, Germany
| | - Xiao Cheng
- DWI-Leibniz-Institute für Interaktiven Materialien and Institut für Physikalische Chemie, RWTH Aachen University, Forckenbeckstraße 50, 52056, Aachen, Germany
| | - Alexander Böker
- Fraunhofer-Institut für Angewandte Polymerforschung, Lehrstuhl für Polymermaterialien und Polymertechnologie, Universität Potsdam, Geiselbergstraße 69, 14476, Potsdam-Golm, Germany
| | - Larisa Tsarkova
- DWI-Leibniz-Institute für Interaktiven Materialien and Institut für Physikalische Chemie, RWTH Aachen University, Forckenbeckstraße 50, 52056, Aachen, Germany
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Ren H, Bull JL, Meyerhoff ME. Transport of Nitric Oxide (NO) in Various Biomedical grade Polyurethanes: Measurements and Modeling Impact on NO Release Properties of Medical Devices. ACS Biomater Sci Eng 2016; 2:1483-1492. [PMID: 27660819 PMCID: PMC5022780 DOI: 10.1021/acsbiomaterials.6b00215] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 07/27/2016] [Indexed: 11/27/2022]
Abstract
Nitric oxide (NO) releasing polymers are promising in improving the biocompatibility of medical devices. Polyurethanes are commonly used to prepare/fabricate many devices (e.g., catheters); however, the transport properties of NO within different polyurethanes are less studied, creating a gap in the rational design of new NO releasing devices involving polyurethane materials. Herein, we study the diffusion and partitioning of NO in different biomedical polyurethanes via the time-lag method. The diffusion of NO is positively correlated with the PDMS content within the polyurethanes, which can be rationalized by effective media theory considering various microphase morphologies. Using catheters as a model device, the effect of these transport properties on the NO release profiles and the distribution around an asymmetric dual lumen catheter are simulated using finite element analysis and validated experimentally. This method can be readily applied in studying other NO release medical devices with different configurations.
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Affiliation(s)
- Hang Ren
- Department of Chemistry, University of Michigan , 930 North University, Ann Arbor, Michigan 48109, United States
| | - Joseph L Bull
- Department of Biomedical Engineering, University of Michigan , 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, United States
| | - Mark E Meyerhoff
- Department of Chemistry, University of Michigan , 930 North University, Ann Arbor, Michigan 48109, United States
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Wang D, Chin HY, He C, Stoykovich MP, Schwartz DK. Polymer Surface Transport Is a Combination of in-Plane Diffusion and Desorption-Mediated Flights. ACS Macro Lett 2016; 5:509-514. [PMID: 35607234 DOI: 10.1021/acsmacrolett.6b00183] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Previous studies of polymer motion at solid/liquid interfaces described the transport in the context of a continuous time random walk (CTRW) process, in which diffusion switches between desorption-mediated "flights" (i.e., hopping) and surface-adsorbed waiting-time intervals. However, it has been unclear whether the waiting times represented periods of complete immobility or times during which molecules engaged in a different (e.g., slower or confined) mode of interfacial transport. Here we designed high-throughput, single-molecule tracking measurements to address this question. Specifically, we studied polymer dynamics on either chemically homogeneous or nanopatterned surfaces (hexagonal diblock copolymer films) with chemically distinct domains, where polymers were essentially excluded from the low-affinity domains, eliminating the possibility of significant continuous diffusion in the absence of desorption-mediated flights. Indeed, the step-size distributions on homogeneous surfaces exhibited an additional diffusive mode that was missing on the chemically heterogeneous nanopatterned surfaces, confirming the presence of a slow continuous mode due to 2D in-plane diffusion. Kinetic Monte Carlo simulations were performed to test this model and, with the theoretical in-plane diffusion coefficient of D2D = 0.20 μm2/s, we found a good agreement between simulations and experimental data on both chemically homogeneous and nanopatterned surfaces.
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Affiliation(s)
- Dapeng Wang
- Department of Chemical and
Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Huai-Ying Chin
- Department of Chemical and
Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Chunlin He
- Department of Chemical and
Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Mark P. Stoykovich
- Department of Chemical and
Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Daniel K. Schwartz
- Department of Chemical and
Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
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18
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Sethuraman V, Pryamitsyn V, Ganesan V. Normal Modes and Dielectric Spectra of Diblock Copolymers in Lamellar Phases. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02721] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vaidyanathan Sethuraman
- Department
of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Victor Pryamitsyn
- Department
of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Venkat Ganesan
- Department
of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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19
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Chintapalli M, Le TNP, Venkatesan NR, Mackay NG, Rojas AA, Thelen JL, Chen XC, Devaux D, Balsara NP. Structure and Ionic Conductivity of Polystyrene-block-poly(ethylene oxide) Electrolytes in the High Salt Concentration Limit. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02620] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mahati Chintapalli
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Thao N. P. Le
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Naveen R. Venkatesan
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Nikolaus G. Mackay
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Adriana A. Rojas
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jacob L. Thelen
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - X. Chelsea Chen
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Didier Devaux
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Nitash P. Balsara
- Department of Materials Science
and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Joint Center for Energy Storage Research (JCESR), ∥Environmental Energy
Technologies
Division, and ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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