1
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Kim GH, Kim M, Hyun JK, Park SJ. Directional Self-Assembly of Nanoparticles Coated with Thermoresponsive Block Copolymers and Charged Small Molecules. ACS Macro Lett 2023:986-992. [PMID: 37399507 DOI: 10.1021/acsmacrolett.3c00221] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Herein, we report the directional stimuli-responsive self-assembly of gold nanoparticles (AuNPs) coated with a thermoresponsive block copolymer (BCP), poly(ethylene glycol)-b-poly(N-isopropylacrylamide) (PEG-b-PNIPAM) and charged small molecules. AuNPs modified with PEG-b-PNIPAM possessing a AuNP/PNIPAM/PEG core/active/shell structure undergo temperature-induced self-assembly into one-dimensional (1D) or two-dimensional (2D) structures in salt solutions, with the morphology varying with the ionic strength of the medium. Salt-free self-assembly is also realized by modulating the surface charge by the codeposition of positively charged small molecules; 1D or 2D assemblies are formed depending on the ratio between the small molecule and PEG-b-PNIPAM, consistent with the trend observed with the bulk salt concentration. A series of charge-controlled self-assembly at various conditions revealed that the temperature-induced BCP-mediated self-assembly reported here provides an effective means for on-demand directional self-assembly of nanoparticles (NPs) with controlled morphology, interparticle distance, and optical properties, and the fixation of high-temperature structures.
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Affiliation(s)
- Ga-Hyun Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Minji Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Jerome K Hyun
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - So-Jung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
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2
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Deng F, Chen J, Xiang J, Li Y, Qiao Y, Liu Z, Ding T. Light-Programmed Bistate Colloidal Actuation Based on Photothermal Active Plasmonic Substrate. RESEARCH 2023; 6:0020. [PMID: 37040515 PMCID: PMC10076013 DOI: 10.34133/research.0020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/15/2022] [Indexed: 01/12/2023]
Abstract
Active particles have been regarded as the key models to mimic and understand the complex systems of nature. Although chemical and field-powered active particles have received wide attentions, light-programmed actuation with long-range interaction and high throughput remains elusive. Here, we utilize photothermal active plasmonic substrate made of porous anodic aluminum oxide filled with Au nanoparticles and poly(
N
-isopropylacrylamide) (PNIPAM) to optically oscillate silica beads with robust reversibility. The thermal gradient generated by the laser beam incurs the phase change of PNIPAM, producing gradient of surface forces and large volume changes within the complex system. The dynamic evolution of phase change and water diffusion in PNIPAM films result in bistate locomotion of silica beads, which can be programmed by modulating the laser beam. This light-programmed bistate colloidal actuation provides promising opportunity to control and mimic the natural complex systems.
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Affiliation(s)
- Fangfang Deng
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Juntao Chen
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China
| | - Junxiang Xiang
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China
| | - Yong Li
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Yan Qiao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ze Liu
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China
| | - Tao Ding
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, China
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3
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Wang X, Zhang C, Chen F, Xiang J, Wang S, Liu Z, Ding T. Optically Triggered Nanoscale Plasmonic Dynamite. ACS NANO 2022; 16:13667-13673. [PMID: 35920563 DOI: 10.1021/acsnano.2c02402] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photons as energy carriers are clean and abundant, which can be conveniently applied for nanoactuation but the response is usually slow with very low energy efficiency/density. Here, we underpin the concept of robust nanoscale plasmonic dynamite by incorporating fullerene (C60). The Au@C60 core-shell nanoparticles can be triggered to explode in nanoscale with synergy of plasmon-enhanced photochemical and photothermal effects. It is suggested that a sensible amount of CO2 was generated and pressurized in nanometric volume in an extremely short time scale (∼ns), which triggers the nanoexplosion, rendering the ejection of Au NPs at the speed over 300 m/s. The ejection generates extremely large local forces (∼1 μN) with thermomechanical energy efficiency up to ∼30%, which is demonstrated as a powerful nanoengine for controlled mobilization of micro-objects on solid surfaces. Such nanoscale plasmonic dynamite is highly exploitable for different types of nanomachines, which provides a powerful energy source for nanoactuation and nanomigration.
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Affiliation(s)
- Xujie Wang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Chi Zhang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Fangqi Chen
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Junxiang Xiang
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China
| | - Shuangshuang Wang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Ze Liu
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China
- State Key Laboratory of Water Resources & Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
| | - Tao Ding
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
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4
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Kamzabek D, Le Dé B, Coche-Guérente L, Miomandre F, Dubacheva GV. Thermoresponsive Fluorescence Switches Based on Au@pNIPAM Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10971-10978. [PMID: 34478305 DOI: 10.1021/acs.langmuir.1c01397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Despite numerous studies emphasizing the plasmonic impact on fluorescence, the design of a dynamic system allowing on-demand fluorescence switching in a single nanostructure remains challenging. The reversibility of fluorescence switching and the versatility of the approach, in particular its compatibility with a wide range of nanoparticles and fluorophores, are among the main experimental difficulties. In this work, we achieve reversible fluorescence switching by coupling metal nanoparticles with fluorophores through stimuli-responsive organic linkers. As a proof of concept, we link gold nanoparticles with fluorescein through thermoresponsive poly(N-isopropylacrylamide) at a tunable grafting density and characterize their size and optical response by dynamic light scattering, absorption, and fluorescence spectroscopies. We show that the fluorescence emission of these hybrid nanostructures can be switched on-demand using the thermoresponsive properties of poly(N-isopropylacrylamide). The described system presents a general strategy for the design of nanointerfaces, exhibiting reversible fluorescence switching via external control of metal nanoparticle/fluorophore distance.
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Affiliation(s)
- Dana Kamzabek
- PPSM, CNRS, Ecole Normale Supérieure Paris-Saclay, Université Paris-Saclay, 61 Avenue Président Wilson, 94235 Cachan, France
| | - Brieuc Le Dé
- PPSM, CNRS, Ecole Normale Supérieure Paris-Saclay, Université Paris-Saclay, 61 Avenue Président Wilson, 94235 Cachan, France
| | - Liliane Coche-Guérente
- Department of Molecular Chemistry, Université Grenoble Alpes, CNRS UMR 5250, 570 rue de la chimie, CS 40700, Grenoble 38000, France
| | - Fabien Miomandre
- PPSM, CNRS, Ecole Normale Supérieure Paris-Saclay, Université Paris-Saclay, 61 Avenue Président Wilson, 94235 Cachan, France
| | - Galina V Dubacheva
- PPSM, CNRS, Ecole Normale Supérieure Paris-Saclay, Université Paris-Saclay, 61 Avenue Président Wilson, 94235 Cachan, France
- Department of Molecular Chemistry, Université Grenoble Alpes, CNRS UMR 5250, 570 rue de la chimie, CS 40700, Grenoble 38000, France
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5
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Cunha C, Klein P, Rosenauer C, Scherf U, Seixas de Melo JS. Fluorescence Studies on a Thermoresponsive PNIPAM-Polyfluorene Graft Copolymer. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Carla Cunha
- CQC, Department of Chemistry, University of Coimbra, Coimbra P3004-535, Portugal
| | - Patrick Klein
- Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universitat Wuppertal, Gauss-Str. 20, Wuppertal D-42119, Germany
| | - Christine Rosenauer
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
| | - Ullrich Scherf
- Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universitat Wuppertal, Gauss-Str. 20, Wuppertal D-42119, Germany
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