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Gold nanoparticle arrays organized in mixed patterns through directed self-assembly of ultrathin block copolymer films on topographic substrates. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang S, Xia F, Demoustier-Champagne S, Jonas AM. Layer-by-layer assembly in nanochannels: assembly mechanism and applications. NANOSCALE 2021; 13:7471-7497. [PMID: 33870383 DOI: 10.1039/d1nr01113h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Layer-by-layer (LbL) assembly is a versatile technology to construct multifunctional nanomaterials using various supporting substrates, enabled by the large selection freedom of building materials and diversity of possible driving forces. The fine regulation over the film thickness and structure provides an elegant way to tune the physical/chemical properties by mild assembly conditions (e.g. pH, ion strength). In this review, we focus on LbL in nanochannels, which exhibit a different growth mechanism compared to "open", convex substrates. The assembly mechanism in nanochannels is discussed in detail, followed by the summary of applications of LbL assemblies liberated from nanochannel templates which can be used as nanoreactors, drug carriers and transporting channels across cell membranes. For fluidic applications, robust membrane substrates are required to keep in place nanotube arrays for membrane-based separation, purification, biosensing and energy harvesting, which are also discussed. The good compatibility of LbL with crossover technologies from other fields allows researchers to further extend this technology to a broader range of research fields, which is expected to result in an increased number of applications of LbL technology in the future.
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Affiliation(s)
- Shouwei Zhang
- Faculty of Materials Science and Chemistry, China University of Geosciences, 430074 Wuhan, China
| | - Fan Xia
- Faculty of Materials Science and Chemistry, China University of Geosciences, 430074 Wuhan, China
| | - Sophie Demoustier-Champagne
- Institute of Condensed Matter and Nanosciences - Bio and Soft Matter (IMCN/BSMA), Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium.
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences - Bio and Soft Matter (IMCN/BSMA), Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium.
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Ghiorghita CA, Bucatariu F, Dragan ES. Influence of cross-linking in loading/release applications of polyelectrolyte multilayer assemblies. A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110050. [DOI: 10.1016/j.msec.2019.110050] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 07/31/2019] [Accepted: 08/02/2019] [Indexed: 10/26/2022]
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Shen MY, Yuran S, Aviv Y, Ayalew H, Luo CH, Tsai YH, Reches M, Yu HH, Shenhar R. Electrically Responsive, Nanopatterned Surfaces for Triggered Delivery of Biologically Active Molecules into Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1201-1208. [PMID: 30565453 DOI: 10.1021/acsami.8b15308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Polyelectrolyte multilayers (PEMs) assembled layer-by-layer have emerged as functional polymer films that are both stable and capable of containing drug molecules for controlled release applications. Most of these applications concentrate on sustained release, where the concentration of the released molecules remains rather constant with time. However, high-efficiency delivery requires obtaining high local concentrations at the vicinity of the cells, which is achieved by triggered release. Here, we show that a nanopatterned PEM platform demonstrates superior properties with respect to drug retention and triggered delivery. A chemically modified block copolymer film was used as a template for the selective deposition of poly(ethylene imine) and a charged derivative of the electroactive poly(3,4-ethylenedioxythiophene) together with a drug molecule. This nanopatterned PEM shows the following advantages: (1) high drug loading; (2) enhanced retention of the bioactive molecule; (3) release triggered by an electrochemical stimulus; (4) high efficacy of drug delivery to cells adsorbed on the surface compared to the delivery efficacy of a similar concentration of drug to cells suspended in a solution.
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Affiliation(s)
- Mo-Yuan Shen
- Institute of Chemistry , Academia Sinica , 128 Academia Road Sec. 2 , Nankang, Taipei 115 , Taiwan
| | - Sivan Yuran
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, Edmond J. Safra Campus , The Hebrew University of Jerusalem , Jerusalem 9190401 , Israel
| | - Yaron Aviv
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, Edmond J. Safra Campus , The Hebrew University of Jerusalem , Jerusalem 9190401 , Israel
| | - Hailemichael Ayalew
- Institute of Chemistry , Academia Sinica , 128 Academia Road Sec. 2 , Nankang, Taipei 115 , Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST) , Academia Sinica , Taipei 115 , Taiwan
| | - Chun-Hao Luo
- Institute of Chemistry , Academia Sinica , 128 Academia Road Sec. 2 , Nankang, Taipei 115 , Taiwan
| | - Yu-Han Tsai
- Institute of Chemistry , Academia Sinica , 128 Academia Road Sec. 2 , Nankang, Taipei 115 , Taiwan
| | - Meital Reches
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, Edmond J. Safra Campus , The Hebrew University of Jerusalem , Jerusalem 9190401 , Israel
| | - Hsiao-Hua Yu
- Institute of Chemistry , Academia Sinica , 128 Academia Road Sec. 2 , Nankang, Taipei 115 , Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST) , Academia Sinica , Taipei 115 , Taiwan
| | - Roy Shenhar
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, Edmond J. Safra Campus , The Hebrew University of Jerusalem , Jerusalem 9190401 , Israel
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A story of “Axellence” – Introduction to the Special Issue of Polymer on “Advanced Polymer Synthesis for Functional Nanostructures” dedicated to professor Axel H.E. Müller on the occasion of his 70th birthday. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.06.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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