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Qi T, Yang D, Chen X, Ke W, Qiu M, Fan Y. Sulfonated ceramic membranes with antifouling performance for the filtration of BSA-containing systems. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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2
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Bovine serum albumin-based and dual-responsive targeted hollow mesoporous silica nanoparticles for breast cancer therapy. Colloids Surf B Biointerfaces 2023; 224:113201. [PMID: 36822117 DOI: 10.1016/j.colsurfb.2023.113201] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/29/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
Combination therapy is an effective way to alleviate the shortcoming of monotherapy and enhances therapeutic efficacy. Herein, a distinctive hollow mesoporous silica nanoparticle (HMSNs) encapsulated with folic acid-modified bovine serum albumin (BSA-FA), denoted as HBF, was engineered for tumor targeting and dual-responsive release of loaded-therapeutic agents MD (methylene blue (MB) and doxorubicin (DOX)). The BSA molecule as a ''gatekeeper'' prevents premature drug leakage and actively unloads the cargos through BSA detachment in response to intracellular glutathione (GSH). Folic acid (FA) promotes the specific intracellular delivery of the drug to folate receptor (FR)-expressing cancer cells to improve the efficacy of chemo-photodynamic therapy (PDT). In vitro drug release profiles showed that the drug carrier could achieve pH/redox-responsive drug release from MD@HBF owing to the cleavage of the imine bonds between HMSNs-CHO and BSA-FA and BSA intramolecular disulfide bond. Additionally, a series of biological evaluations, such as cell uptake experiments, toxicity experiments, and in vivo therapeutic assays indicated that MD@HBF possesses the features of accurately targeting FR-expressing 4T1 cells to induce cells apoptosis in vitro, exhibits outstanding tumor cell synergistic killing efficiency of chemo-photodynamic therapy (combination index CI = 0.325), and inhibits tumors growth. These results demonstrated that the strategy of combining HMSNs with stimuli-responsive biodegradable protein molecules could provide a new potential direction toward the ''on-demand'' drug release for precision chemo-photodynamic therapy in cancer treatment.
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Zhang Z, Chen C, Zhang S, Ye X, Zhou J, Wang Y. Large-area homoporous membranes (HOMEs) enabled by multiple annealing. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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4
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Mechanically strong, anti-fouling and pH-resistant isoporous membranes prepared from chemically designed new block copolymers. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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5
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Zhang Z, Rahman MM, Bajer B, Scharnagl N, Abetz V. Highly selective isoporous block copolymer membranes with tunable polyelectrolyte brushes in soft nanochannels. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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6
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Zhang Z, Simon A, Abetz C, Held M, Höhme AL, Schneider ES, Segal-Peretz T, Abetz V. Hybrid Organic-Inorganic-Organic Isoporous Membranes with Tunable Pore Sizes and Functionalities for Molecular Separation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2105251. [PMID: 34580938 DOI: 10.1002/adma.202105251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/28/2021] [Indexed: 05/26/2023]
Abstract
Accomplishing on-demand molecular separation with a high selectivity and good permeability is very desirable for pollutant removal and chemical and pharmaceutical processing. The major challenge for sub-10 nm filtration of particles and molecules is the fabrication of high-performance membranes with tunable pore size and designed functionality. Here, a versatile top-down approach is demonstrated to produce such a membrane using isoporous block copolymer membranes with well-defined pore sizes combined with growth of metal oxide using sequential infiltration synthesis and atomic layer deposition (SIS and ALD). The pore size of the membranes is tuned by controlled metal oxide growth within and onto the polymer channels, enabling up to twofold pore diameter reduction. Following the growth, the distinct functionalities are readily incorporated along the membrane nanochannels with either hydrophobic, cationic, or anionic groups via straightforward and scalable gas/liquid-solid interface reactions. The hydrophilicity/hydrophobicity of the membrane nanochannel is significantly changed by the introduction of hydrophilic metal oxide and hydrophobic fluorinated groups. The functionalized membranes exhibit a superior selectivity and permeability in separating 1-2 nm organic molecules and fractionating similar-sized proteins based on size, charge, and hydrophobicity. This demonstrates the great potential of organic-inorganic-organic isoporous membranes for high-performance molecular separation in numerous applications.
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Affiliation(s)
- Zhenzhen Zhang
- Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Str. 1, 21502, Geesthacht, Germany
| | - Assaf Simon
- Department of Chemical Engineering, Technion- Israel Institute of Technology, Haifa, 3200003, Israel
| | - Clarissa Abetz
- Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Str. 1, 21502, Geesthacht, Germany
| | - Martin Held
- Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Str. 1, 21502, Geesthacht, Germany
| | - Anke-Lisa Höhme
- Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Str. 1, 21502, Geesthacht, Germany
| | - Erik S Schneider
- Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Str. 1, 21502, Geesthacht, Germany
| | - Tamar Segal-Peretz
- Department of Chemical Engineering, Technion- Israel Institute of Technology, Haifa, 3200003, Israel
| | - Volker Abetz
- Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Str. 1, 21502, Geesthacht, Germany
- Universität Hamburg, Institute of Physical Chemistry, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany
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Polydopamine modification of high-performance PVDF ultrafiltration membranes prepared by the combined crystallisation and diffusion (CCD) method. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119538] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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8
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9
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Kriksin Y. 3D bicontinuous diamond-like morphologies in thin films of soluted block copolymers. J Chem Phys 2021; 155:054906. [PMID: 34364333 DOI: 10.1063/5.0058035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
As shown theoretically earlier via both weak segregation and self-consistent field theories, ordering of confined molten di- and tri-block copolymer morphologies in the presence of a proper 1D patterned substrate could induce the formation of 3D bicontinuous (in particular, diamond-like) morphologies (DLMs). The purpose of the present paper is to study, unlike the previous studies, how the stable DLMs are formed not in a melt but in a solution of symmetric diblock copolymers with a nonselective solvent that wets the thin film on the patterned substrate. It is shown, via a straightforward self-consistent field calculation of the total solution free energy for various competing phases, that the DLM could be formed in the solutions (with the solvent volume fraction of 0.5), which provides much faster thermodynamic equilibration of the solution as compared to the melt. The last circumstance can ease the production of stable DLMs in thin films of copolymers. The phase diagram describing the stable phases on the plane "the pattern period-the film thickness" is built.
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Affiliation(s)
- Yury Kriksin
- Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Moscow, Russia
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Guo L, Wang Y, Steinhart M. Porous block copolymer separation membranes for 21st century sanitation and hygiene. Chem Soc Rev 2021; 50:6333-6348. [PMID: 33890584 DOI: 10.1039/d0cs00500b] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Removing hazardous particulate and macromolecular contaminants as well as viruses with sizes from a few nm up to the 100 nm-range from water and air is crucial for ensuring sufficient sanitation and hygiene for a growing world population. To this end, high-performance separation membranes are needed that combine high permeance, high selectivity and sufficient mechanical stability under operating conditions. However, design features of separation membranes enhancing permeance reduce selectivity and vice versa. Membrane configurations combining high permeance and high selectivity suffer in turn from a lack of mechanical robustness. These problems may be tackled by using block copolymers (BCPs) as a material platform for the design of separation membranes. BCPs are macromolecules that consist of two or more chemically distinct block segments, which undergo microphase separation yielding a wealth of ordered nanoscopic domain structures. Various methods allow the transformation of these nanoscopic domain structures into customized nanopore systems with pore sizes in the sub-100 nm range and with narrow pore size distributions. This tutorial review summarizes design strategies for nanoporous state-of-the-art BCP separation membranes, their preparation, their device integration and their use for water purification.
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Affiliation(s)
- Leiming Guo
- Institut für Chemie neuer Materialien and CellNanOs, Universität Osnabrück, Barbarastr. 7, 49076 Osnabrück, Germany.
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Rahman MM. Selective Swelling and Functionalization of Integral Asymmetric Isoporous Block Copolymer Membranes. Macromol Rapid Commun 2021; 42:e2100235. [PMID: 34057263 DOI: 10.1002/marc.202100235] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/07/2021] [Indexed: 11/12/2022]
Abstract
SNIPS stands for a membrane fabrication technique that combines the evaporation induced self-assembly of the block copolymers and the classical nonsolvent induced phase separation. It is a one-step readily scalable technique to fabricate integral asymmetric isoporous membranes. The prominent developments in the last decade have carved out a niche for SNIPS as a potential technique to fabricate next generation isoporous membranes. In the last decade, a rich polymer library and variety of membrane postmodification routes have been successfully implemented to fabricate SNIPS membranes having the desired pore functionality. Some of these membranes form soft nanochannels in hydrated state due to swelling of the pore wall, i.e., the pore forming block of the block copolymer. These membranes having soft nanochannels have demonstrated the potential to perform several challenging separation tasks in ultrafiltration and nanofiltration. This paper highlights the currently accessible pore functionality, the strategies to tune the swelling of the soft nanochannels, the potential applications, and future perspectives of these membranes.
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Affiliation(s)
- Md Mushfequr Rahman
- Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Straße 1, Geesthacht, 21502, Germany
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Hampu N, Werber JR, Chan WY, Feinberg EC, Hillmyer MA. Next-Generation Ultrafiltration Membranes Enabled by Block Polymers. ACS NANO 2020; 14:16446-16471. [PMID: 33315381 DOI: 10.1021/acsnano.0c07883] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Reliable and equitable access to safe drinking water is a major and growing challenge worldwide. Membrane separations represent one of the most promising strategies for the energy-efficient purification of potential water sources. In particular, porous membranes are used for the ultrafiltration (UF) of water to remove contaminants with nanometric sizes. However, despite exhibiting excellent water permeability and solution processability, existing UF membranes contain a broad distribution of pore sizes that limit their size selectivity. To maximize the potential utility of UF membranes and allow for precise separations, improvements in the size selectivity of these systems must be achieved. Block polymers represent a potentially transformative solution, as these materials self-assemble into well-defined domains of uniform size. Several different strategies have been reported for integrating block polymers into UF membranes, and each strategy has its own set of materials and processing considerations to ensure that uniform and continuous pores are generated. This Review aims to summarize and critically analyze the chemistries, processing techniques, and properties required for the most common methods for producing porous membranes from block polymers, with a particular focus on the fundamental mechanisms underlying block polymer self-assembly and pore formation. Critical structure-property-performance metrics will be analyzed for block polymer UF membranes to understand how these membranes compare to commercial UF membranes and to identify key research areas for continued improvements. This Review is intended to inform readers of the capabilities and current challenges of block polymer UF membranes, while stimulating critical thought on strategies to advance these technologies.
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Affiliation(s)
- Nicholas Hampu
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jay R Werber
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Wui Yarn Chan
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Elizabeth C Feinberg
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Marc A Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Wang J, Rahman MM, Abetz C, Abetz V. Tuning the size selectivity of isoporous membranes for protein fractionation via two scalable post treatment approaches. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118535] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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