1
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Charconnet M, Korsa MT, Petersen S, Plou J, Hanske C, Adam J, Seifert A. Generalization of Self-Assembly Toward Differently Shaped Colloidal Nanoparticles for Plasmonic Superlattices. Small Methods 2023; 7:e2201546. [PMID: 36807876 DOI: 10.1002/smtd.202201546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Periodic superlattices of noble metal nanoparticles have demonstrated superior plasmonic properties compared to randomly distributed plasmonic arrangements due to near-field coupling and constructive far-field interference. Here, a chemically driven, templated self-assembly process of colloidal gold nanoparticles is investigated and optimized, and the technology is extended toward a generalized assembly process for variously shaped particles, such as spheres, rods, and triangles. The process yields periodic superlattices of homogenous nanoparticle clusters on a centimeter scale. Electromagnetically simulated absorption spectra and corresponding experimental extinction measurements demonstrate excellent agreement in the far-field for all particle types and different lattice periods. The electromagnetic simulations reveal the specific nano-cluster near-field behavior, predicting the experimental findings provided by surface-enhanced Raman scattering measurements. It turns out that periodic arrays of spherical nanoparticles produce higher surface-enhanced Raman scattering enhancement factors than particles with less symmetry as a result of very well-defined strong hotspots.
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Affiliation(s)
- Mathias Charconnet
- CIC nanoGUNE BRTA, San Sebastián, 20018, Spain
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Matiyas Tsegay Korsa
- University of Southern Denmark, SDU Centre for Photonics Engineering, Mads Clausen Institute, Odense, 5230, Denmark
| | - Søren Petersen
- University of Southern Denmark, SDU Centre for Photonics Engineering, Mads Clausen Institute, Odense, 5230, Denmark
| | - Javier Plou
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
- CIBER-BBN, ISCIII, San Sebastián, 20014, Spain
| | - Christoph Hanske
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Jost Adam
- University of Southern Denmark, SDU Centre for Photonics Engineering, Mads Clausen Institute, Odense, 5230, Denmark
| | - Andreas Seifert
- CIC nanoGUNE BRTA, San Sebastián, 20018, Spain
- IKERBASQUE - Basque Foundation for Science, Bilbao, 48009, Spain
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2
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Hanske C, Hill EH, Vila-Liarte D, González-Rubio G, Matricardi C, Mihi A, Liz-Marzán LM. Solvent-Assisted Self-Assembly of Gold Nanorods into Hierarchically Organized Plasmonic Mesostructures. ACS Appl Mater Interfaces 2019; 11:11763-11771. [PMID: 30844239 PMCID: PMC6439440 DOI: 10.1021/acsami.9b00334] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/07/2019] [Indexed: 05/18/2023]
Abstract
Plasmonic supercrystals and periodically structured arrays comprise a class of materials with unique optical properties that result from the interplay of plasmon resonances, as well as near- and far-field coupling. Controlled synthesis of such hierarchical structures remains a fundamental challenge, as it demands strict control over the assembly morphology, array size, lateral spacing, and macroscale homogeneity. Current fabrication approaches involve complicated multistep procedures lacking scalability and reproducibility, which has hindered the practical application of plasmonic supercrystal arrays. Herein, these challenges are addressed by adding an organic solvent to achieve kinetic control over the template-assisted colloidal assembly of nanoparticles from aqueous dispersion. This method yields highly regular periodic arrays, with feature sizes ranging from less than 200 nm up to tens of microns. A combined experimental/computational approach reveals that the underlying mechanism is a combination of the removal of interfacial surfactant micelles from the particle interface and altered capillary flows. Assessing the efficacy of such square arrays for surface-enhanced Raman scattering spectroscopy, we find that a decrease of the lattice periodicity from 750 nm down to 400 nm boosts the signal by more than an order of magnitude, thereby enabling sensitive detection of analytes, such as the bacterial quorum sensing molecule pyocyanin, even in complex biological media.
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Affiliation(s)
- Christoph Hanske
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
- E-mail: (C.H.)
| | - Eric H. Hill
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
| | - David Vila-Liarte
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
| | | | - Cristiano Matricardi
- Institut de Ciència
de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Catalonia, Spain
| | - Agustín Mihi
- Institut de Ciència
de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Catalonia, Spain
| | - Luis M. Liz-Marzán
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
- Ikerbasque, Basque Foundation of Science, 48013 Bilbao, Spain
- E-mail: (L.M.L.-M.)
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3
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Matricardi C, Hanske C, Garcia-Pomar JL, Langer J, Mihi A, Liz-Marzán LM. Gold Nanoparticle Plasmonic Superlattices as Surface-Enhanced Raman Spectroscopy Substrates. ACS Nano 2018; 12:8531-8539. [PMID: 30106555 DOI: 10.1021/acsnano.8b04073] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Metal colloids are of great interest in the field of nanophotonics, mainly due to their morphology-dependent optical properties, but also because they are high-quality building blocks for complex plasmonic architectures. Close-packed colloidal supercrystals not only serve for investigating the rich plasmonic resonances arising in strongly coupled arrangements but also enable tailoring the optical response, on both the nano- and the macroscale. Bridging these vastly different length scales at reasonable fabrication costs has remained fundamentally challenging, but is essential for applications in sensing, photovoltaics or optoelectronics, among other fields. We present here a scalable approach to engineer plasmonic supercrystal arrays, based on the template-assisted assembly of gold nanospheres with topographically patterned polydimethylsiloxane molds. Regular square arrays of hexagonally packed supercrystals were achieved, reaching periodicities down to 400 nm and feature sizes around 200 nm, over areas up to 0.5 cm2. These two-dimensional supercrystals exhibit well-defined collective plasmon modes that can be tuned from the visible through the near-infrared by simple variation of the lattice parameter. We present electromagnetic modeling of the physical origin of the underlying hybrid modes and demonstrate the application of superlattice arrays as surface-enhanced Raman scattering (SERS) spectroscopy substrates which can be tailored for a specific probe laser. We therefore investigated the influence of the lattice parameter, local degree of order, and cluster architecture to identify the optimal configuration for highly efficient SERS of a nonresonant Raman probe with 785 nm excitation.
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Affiliation(s)
- Cristiano Matricardi
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus de la UAB, 08193 Bellaterra , Catalonia , Spain
| | - Christoph Hanske
- CIC biomaGUNE and Ciber-BBN , Paseo de Miramón 182 , 20014 Donostia - San Sebastián , Spain
| | - Juan Luis Garcia-Pomar
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus de la UAB, 08193 Bellaterra , Catalonia , Spain
| | - Judith Langer
- CIC biomaGUNE and Ciber-BBN , Paseo de Miramón 182 , 20014 Donostia - San Sebastián , Spain
| | - Agustín Mihi
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus de la UAB, 08193 Bellaterra , Catalonia , Spain
| | - Luis M Liz-Marzán
- CIC biomaGUNE and Ciber-BBN , Paseo de Miramón 182 , 20014 Donostia - San Sebastián , Spain
- Ikerbasque, Basque Foundation for Science , 48013 Bilbao , Spain
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4
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Striolo A, Kim J, Liz-Marzán L, Tadiello L, Pauly M, Murphy C, Roig A, Gracias D, Xia Y, Reguera J, Mueller A, Critchley K, Brust M, Scarabelli L, Mayer M, Thiele M, Buzza M, Deák A, Bago Rodriguez AM, Kuttner C, Wolf H, Kay E, Stocco A, Portehault D, Mattoussi H, Heatley K, Kumacheva E, González G, Hanske C, Tong W, Tahir MN, Abécassis B, Granick S, Duguet E, Synytska A, Velikov K. Janus and patchy nanoparticles: general discussion. Faraday Discuss 2018; 191:117-139. [PMID: 27711897 DOI: 10.1039/c6fd90048h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Hanske C, Sanz-Ortiz MN, Liz-Marzán LM. Silica-Coated Plasmonic Metal Nanoparticles in Action. Adv Mater 2018; 30:e1707003. [PMID: 29736945 DOI: 10.1002/adma.201707003] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/17/2018] [Indexed: 05/22/2023]
Abstract
Hybrid colloids consisting of noble metal cores and metal oxide shells have been under intense investigation for over two decades and have driven progress in diverse research lines including sensing, medicine, catalysis, and photovoltaics. Consequently, plasmonic core-shell particles have come to play a vital role in a plethora of applications. Here, an overview is provided of recent developments in the design and utilization of the most successful class of such hybrid materials, silica-coated plasmonic metal nanoparticles. Besides summarizing common simple approaches to silica shell growth, special emphasis is put on advanced synthesis routes that either overcome typical limitations of classical methods, such as stability issues and undefined silica porosity, or grant access to particularly sophisticated nanostructures. Hereby, a description is given, how different types of silica can be used to provide noble metal particles with specific functionalities. Finally, applications of such nanocomposites in ultrasensitive analyte detection, theranostics, catalysts, and thin-film solar cells are reviewed.
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Affiliation(s)
- Christoph Hanske
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, ,20014, Donostia-San Sebastián, Spain
| | - Marta N Sanz-Ortiz
- Centre for Nanostructured Media, School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, UK
| | - Luis M Liz-Marzán
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, ,20014, Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
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6
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Hill EH, Hanske C, Johnson A, Yate L, Jelitto H, Schneider GA, Liz-Marzán LM. Metal Nanoparticle Growth within Clay-Polymer Nacre-Inspired Materials for Improved Catalysis and Plasmonic Detection in Complex Biofluids. Langmuir 2017; 33:8774-8783. [PMID: 28502180 DOI: 10.1021/acs.langmuir.7b00754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Recent studies have shown that layered silicate clays can be used to form a nacre-like bioinspired layered structure with various polymer fillers, leading to composite films with good material strength, gas-barrier properties, and high loading capacity. We go one step further by in situ growing metal nanoparticles in nacre-like layered films based on layered silicate clays, which can be used for applications in plasmonic sensing and catalysis. The degree of anisotropy of the nanoparticles grown in the film can be controlled by adjusting the ratio of clay to polymer or gold to clay and reducing agent concentration, as well as silver overgrowth, which greatly enhances the surface enhanced Raman scattering activity of the composite. We show the performance of the films for SERS detection of bacterial quorum sensing molecules in culture medium, and catalytic properties are demonstrated through the reduction of 4-nitroaniline. These films serve as the first example of seedless, in situ nanoparticle growth within nacre-mimetic materials, and open the path to basic research on the influence of different building blocks and polymeric mortars on nanoparticle morphology and distribution, as well as applications in catalysis, sensing, and antimicrobial surfaces using such materials.
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Affiliation(s)
- Eric H Hill
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Ciber-BBN , 20014 Donostia-San Sebastián, Spain
| | - Christoph Hanske
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
| | - Alexander Johnson
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
| | - Luis Yate
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
| | - Hans Jelitto
- Institute of Advanced Ceramics, Hamburg University of Technology , 21073 Hamburg, Germany
| | - Gerold A Schneider
- Institute of Advanced Ceramics, Hamburg University of Technology , 21073 Hamburg, Germany
| | - Luis M Liz-Marzán
- Bionanoplasmonics Laboratory, CIC biomaGUNE , 20014 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science , 48013 Bilbao, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Ciber-BBN , 20014 Donostia-San Sebastián, Spain
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7
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Striolo A, Kim J, Murphy C, Liz-Marzán L, Lahann J, Reguera J, Zhou Y, Brust M, Thill A, Scarabelli L, König TAF, Buzza M, Kuttner C, Gonzalez Solveyra E, Wolf H, Vermant J, Pauly M, Harvie A, Pasquato L, Stocco A, Mattoussi H, Kumacheva E, Heatley K, Hanske C, Faller R, French D, Honciuc A, Binks B, Sicard F. Particles at interfaces: general discussion. Faraday Discuss 2016; 191:407-434. [DOI: 10.1039/c6fd90050j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Tebbe M, Mayer M, Glatz BA, Hanske C, Probst PT, Müller MB, Karg M, Chanana M, König TAF, Kuttner C, Fery A. Optically anisotropic substrates via wrinkle-assisted convective assembly of gold nanorods on macroscopic areas. Faraday Discuss 2015; 181:243-60. [PMID: 25951174 PMCID: PMC4530594 DOI: 10.1039/c4fd00236a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 12/10/2014] [Indexed: 11/21/2022]
Abstract
We demonstrate the large-scale organisation of anisotropic nanoparticles into linear assemblies displaying optical anisotropy on macroscopic areas. Monodisperse gold nanorods with a hydrophilic protein shell are arranged by dip-coating on wrinkled surfaces and subsequently transferred to indium tin oxide (ITO) substrates by capillary transfer printing. We elucidate how tuning the wrinkle amplitude enables us to precisely adjust the assembly morphology and fabricate single, double and triple nanorod lines. For the single lines, we quantify the order parameter of the assemblies as well as interparticle distances from scanning electron microscopy (SEM) images. We find an order parameter of 0.97 and a mean interparticle gap size of 7 nm. This combination of close to perfect uni-axial alignment and close-packing gives rise to pronounced macroscopic anisotropic optical properties due to strong plasmonic coupling. We characterise the optical response of the assemblies on ITO-coated glass via UV/vis/NIR spectroscopy and determine an optical order parameter of 0.91. The assemblies are thus plasmonic metamaterials, as their periodicity and building block sizes are well below the optical wavelength. The presented approach does not rely on lithographic patterning and provides access to functional materials, which could have applications in subwavelength waveguiding, photovoltaics, and for large-area metamaterial fabrication.
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Affiliation(s)
- Moritz Tebbe
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Martin Mayer
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Bernhard A. Glatz
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Christoph Hanske
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Patrick T. Probst
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Mareen B. Müller
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Matthias Karg
- Physical Chemistry I , Universitätsstraße 30 , 95440 , Bayreuth , Germany
| | - Munish Chanana
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
- Institute of Building Materials , ETH Zurich , 8093 , Zurich , Switzerland
| | - Tobias A. F. König
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Christian Kuttner
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
| | - Andreas Fery
- Physical Chemistry II , Universitätsstraße 30 , 95440 , Bayreuth , Germany . ; Fax: +49 (0)921/55-2059 ; Tel: +49 (0)921/55-2751
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9
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Hanske C, Tebbe M, Kuttner C, Bieber V, Tsukruk VV, Chanana M, König TAF, Fery A. Strongly coupled plasmonic modes on macroscopic areas via template-assisted colloidal self-assembly. Nano Lett 2014; 14:6863-71. [PMID: 25347293 PMCID: PMC4344371 DOI: 10.1021/nl502776s] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/22/2014] [Indexed: 04/14/2023]
Abstract
We present ensembles of surface-ordered nanoparticle arrangements, which are formed by template-assisted self-assembly of monodisperse, protein-coated gold nanoparticles in wrinkle templates. Centimeter-squared areas of highly regular, linear assemblies with tunable line width are fabricated and their extinction cross sections can be characterized by conventional UV/vis/NIR spectroscopy. Modeling based on electrodynamic simulations shows a clear signature of strong plasmonic coupling with an interparticle spacing of 1-2 nm. We find evidence for well-defined plasmonic modes of quasi-infinite chains, such as resonance splitting and multiple radiant modes. Beyond elementary simulations on the individual chain level, we introduce an advanced model, which considers the chain length distribution as well as disorder. The step toward macroscopic sample areas not only opens perspectives for a range of applications in sensing, plasmonic light harvesting, surface enhanced spectroscopy, and information technology but also eases the investigation of hybridization and metamaterial effects fundamentally.
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Affiliation(s)
- Christoph Hanske
- Physical
Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Moritz Tebbe
- Physical
Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Christian Kuttner
- Physical
Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Vera Bieber
- Physical
Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Vladimir V. Tsukruk
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Munish Chanana
- Physical
Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
- Institute
of Building Materials (IfB), ETH Zürich, Stefano-Franscini-Platz 3, 8093 Zürich, Switzerland
| | - Tobias A. F. König
- Physical
Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Andreas Fery
- Physical
Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
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Betthausen E, Dulle M, Hanske C, Müller M, Fery A, Förster S, Schacher FH, Müller AHE. Nanoporous Sheets and Cylinders via Bulk Templating of Triblock Terpolymer/Homopolymer Blends. Macromolecules 2014. [DOI: 10.1021/ma501003z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | | | | | | | | | | | - Felix H. Schacher
- Institut
für Organische und Makromolekulare Chemie and Jena Center for
Soft Matter, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
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11
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Karpitschka S, Hanske C, Fery A, Riegler H. Coalescence and noncoalescence of sessile drops: impact of surface forces. Langmuir 2014; 30:6826-6830. [PMID: 24841430 DOI: 10.1021/la500459v] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Due to capillarity, sessile droplets of identical liquids will instantaneously fuse when they come in contact at their three-phase lines. However, with drops of different, completely miscible liquids, instantaneous coalescence can be suppressed. Instead, the drops remain in a state of noncoalescence for some time, with the two drop bodies connected only by a thin neck. The reason for this noncoalescence is the surface tension difference, Δγ, between the liquids. If Δγ is sufficiently large, then it induces a sufficiently strong Marangoni flow, which keeps the main drop bodies temporarily separated. Studies with spreading drops have revealed that the boundary between instantaneous coalescence and noncoalescence is sharp (Karpitschka, S.; Riegler, H. J. Fluid. Mech. 2014, 743, R1). The boundary is a function of two parameters only: Δγ and Θ(a), the arithmetic mean of the contact angles in the moment of drop-drop contact. It appears plausible that surface forces (the disjoining pressure) could also influence the coalescence behavior. However, in experiments with spreading drops, surface forces always promote coalescence and their influence might be obscured. Therefore, we present here coalescence experiments with partially wetting liquids and compare the results to the spreading case. We adjust different equilibrium contact angles (i.e., different surface forces) with different substrate surface coatings. As for spreading drops, we observe a sharp boundary between regimes of coalescence and noncoalescence. The boundary follows the same power law relation for both partially and completely wetting cases. Therefore, we conclude that surface forces have no significant, explicit influence on the coalescence behavior of sessile drops from different miscible liquids.
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12
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Betthausen E, Hanske C, Müller M, Fery A, Schacher FH, Müller AHE, Pochan DJ. Self-Assembly of Amphiphilic Triblock Terpolymers Mediated by Multifunctional Organic Acids: Vesicles, Toroids, and (Undulated) Ribbons. Macromolecules 2014. [DOI: 10.1021/ma402555c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Eva Betthausen
- Macromolecular
Chemistry II and Bayreuth Center for Colloids and Interfaces, University of Bayreuth, 95440 Bayreuth, Germany
| | - Christoph Hanske
- Physical
Chemistry II, University of Bayreuth, 95440 Bayreuth, Germany
| | - Melanie Müller
- Macromolecular
Chemistry II and Bayreuth Center for Colloids and Interfaces, University of Bayreuth, 95440 Bayreuth, Germany
| | - Andreas Fery
- Physical
Chemistry II, University of Bayreuth, 95440 Bayreuth, Germany
| | - Felix H. Schacher
- Laboratory
of Organic and Macromolecular Chemistry and Jena Center for Soft Matter, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Axel H. E. Müller
- Macromolecular
Chemistry II and Bayreuth Center for Colloids and Interfaces, University of Bayreuth, 95440 Bayreuth, Germany
| | - Darrin J. Pochan
- Department of Materials Science & Engineering, University of Delaware, Newark, Delaware 19716, United States
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13
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Hanske C, Müller MB, Bieber V, Tebbe M, Jessl S, Wittemann A, Fery A. The role of substrate wettability in nanoparticle transfer from wrinkled elastomers: fundamentals and application toward hierarchical patterning. Langmuir 2012; 28:16745-16750. [PMID: 23167604 DOI: 10.1021/la304028f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report on the role of surface wettability during the printing transfer of nanoparticles from wrinkled surfaces onto flat substrates. As we demonstrate, this parameter dominates the transfer process. This effect can further be utilized to transfer colloidal particles in a structured fashion, if the substrates are patterned in wettability. The resulting colloidal arrangements are highly regular over macroscopic surface areas and display distinct pattern features in both the micrometer and nanoscale regime. We study the obtained structures and discuss the potential of this approach for creating hierarchical particle assemblies of high complexity. Our findings not only contribute to a better understanding of technologically relevant colloidal assembly processes, but also open new avenues for the realization of novel materials consisting of nanoparticles. In this regard, the presented structuring method is especially interesting for the design of optically functional surface coatings.
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Affiliation(s)
- Christoph Hanske
- Physical Chemistry II, University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
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14
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Young SL, Gupta M, Hanske C, Fery A, Scheibel T, Tsukruk VV. Utilizing Conformational Changes for Patterning Thin Films of Recombinant Spider Silk Proteins. Biomacromolecules 2012; 13:3189-99. [DOI: 10.1021/bm300964h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Seth L. Young
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Maneesh Gupta
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Christoph Hanske
- Physical Chemistry II, University of Bayreuth, Universitätsstrasse
30, 95447 Bayreuth, Germany
| | - Andreas Fery
- Physical Chemistry II, University of Bayreuth, Universitätsstrasse
30, 95447 Bayreuth, Germany
| | - Thomas Scheibel
- Biomaterials, FAN, University of Bayreuth, Universitätsstrasse
30, 95447 Bayreuth, Germany
| | - Vladimir V. Tsukruk
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Hanske C, Erath J, Kühr C, Trebbin M, Schneider C, Wittemann A, Fery A. Adsorption of Spherical Polyelectrolyte Brushes: from Interactions to Surface Patterning. Z PHYS CHEM 2012. [DOI: 10.1524/zpch.2012.0265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Adsorption of colloidal particles constitutes an attractive route to tailor the properties of surfaces. However, for efficient material design full control over the particle-substrate interactions is required. We investigate the interaction of spherical polyelectrolyte brushes (SPB) with charged substrates based on adsorption studies and atomic force spectroscopy. The brush layer grafted from the colloidal particles allows a precise adjustment of their adsorption behavior by varying the concentration of added salt. We find a pronounced selectivity between oppositely and like-charged surfaces for ionic strengths up to 10 mM. Near the transition from the osmotic to the salted brush regime at approximately 100 mM attractive secondary interactions become dominant. In this regime SPB adsorb even to like-charged surfaces. To determine the adhesion energy of SPB on charged surfaces directly, we synthesize micrometer-sized SPB. These particles are used in colloidal probe AFM studies. Measurements on oppositely charged surfaces show high forces of adhesion for low ionic strengths that can be attributed to an entropy gain by counterion release. Transferring our observations to charge patterned substrates, we are able to direct the deposition of SPB into two-dimensional arrays. Considering that numerous chemical modifications have been reported for SPB, our studies could open exiting avenues for the production of functional materials with a hierarchical internal organization.
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Affiliation(s)
- Christoph Hanske
- University of Bayreuth, Physical Chemistry II, Bayreuth, Deutschland
| | - Johann Erath
- University of Bayreuth, Physical Chemistry II, Bayreuth, Deutschland
| | - Christin Kühr
- University of Bayreuth, Physical Chemistry I, Bayreuth, Deutschland
| | - Martin Trebbin
- University of Bayreuth, Physical Chemistry I, Bayreuth, Deutschland
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16
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Hanske C, Schneider C, Drechsler M, Wittemann A, Fery A. Salt-regulated attraction and repulsion of spherical polyelectrolyte brushes towards polyelectrolyte multilayers. Phys Chem Chem Phys 2012; 14:4196-203. [DOI: 10.1039/c2cp23408d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Korovin AN, Sergeyev VG, Pyshkina OA, Hanske C, Fery A, Wittemann A, Tsarkova L. Nanoreactor-Assisted Polymerization Toward Stable Dispersions of Conductive Composite Particles. Macromol Rapid Commun 2011; 32:462-7. [DOI: 10.1002/marc.201000626] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 10/28/2010] [Indexed: 11/09/2022]
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18
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Pretzl M, Schweikart A, Hanske C, Chiche A, Zettl U, Horn A, Böker A, Fery A. A lithography-free pathway for chemical microstructuring of macromolecules from aqueous solution based on wrinkling. Langmuir 2008; 24:12748-12753. [PMID: 18950207 DOI: 10.1021/la8021694] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report on a novel lithography-free method for obtaining chemical submicron patterns of macromolecules on flat substrates. The approach is an advancement of the well-known microcontact printing scheme: While for classical microcontact printing lithographically produced masters are needed, we show that controlled wrinkling can serve as an alternative pathway to producing such masters. These can even show submicron periodicities. We expect upscaling to larger areas to be considerably simpler than that for existing techniques, as wrinkling results in a macroscopic deformation process that is not limited in terms of substrate size. Using this approach, we demonstrate successful printing of aqueous solutions of polyelectrolytes and proteins. We study the effectiveness of the stamping process and its limits in terms of periodicities and heights of the stamps' topographical features. We find that critical wavelengths are well below 355 nm and critical amplitudes are below 40 nm and clarify the failure mechanism in this regime. This will permit further optimization of the approach in the future.
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Affiliation(s)
- Melanie Pretzl
- Physical Chemistry Department, University of Bayreuth, Bayreuth, Germany
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