1
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Sadek H, Siddique SK, Chen C, Ho RM. Well-Ordered Bicontinuous Nanohybrids from a Bottom-Up Approach for Enhanced Strength and Toughness. NANO LETTERS 2024; 24:11020-11027. [PMID: 39193990 PMCID: PMC11378333 DOI: 10.1021/acs.nanolett.4c03157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Biomimicking natural structures to create structural materials with superior mechanical performance is an area of extensive attention, yet achieving both high strength and toughness remains challenging. This study presents a novel bottom-up approach using self-assembled block copolymer templating to synthesize bicontinuous nanohybrids composed of well-ordered nanonetwork hydroxyapatite (HAp) embedded in poly(methyl methacrylate) (PMMA). This structuring transforms intrinsically brittle HAp into a ductile material, while hybridization with PMMA alleviates the strength reduction caused by porosity. The resultant bicontinuous PMMA/HAp nanohybrids, reinforced at the interface, exhibit high strength and toughness due to the combined effects of topology, nanosize, and hybridization. This work suggests a conceptual framework for fabricating flexible thin films with mechanical properties significantly surpassing those of traditional composites and top-down approaches.
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Affiliation(s)
- Hassan Sadek
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Suhail K Siddique
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chien Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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2
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Zhang Z, Deng C, Fan X, Li M, Zhang M, Wang X, Chen F, Shi S, Zhou Y, Deng L, Gao H, Xiong W. 3D Directional Assembly of Liquid Crystal Molecules. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401533. [PMID: 38794830 DOI: 10.1002/adma.202401533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/20/2024] [Indexed: 05/26/2024]
Abstract
The precise construction of hierarchically long-range ordered structures using molecules as fundamental building blocks can fully harness their anisotropy and potential. However, the 3D, high-precision, and single-step directional assembly of molecules is a long-pending challenge. Here, a 3D directional molecular assembly strategy via femtosecond laser direct writing (FsLDW) is proposed and the feasibility of this approach using liquid crystal (LC) molecules as an illustrative example is demonstrated. The physical mechanism for femtosecond (fs) laser-induced assembly of LC molecules is investigated, and precise 3D arbitrary assembly of LC molecules is achieved by defining the discretized laser scanning pathway. Additionally, an LC-based Fresnel zone plate array with polarization selection and colorization imaging functions is fabricated to further illustrate the potential of this method. This study not only introduces a 3D high-resolution alignment method for LC-based functional devices but also establishes a universal protocol for the precise 3D directional assembly of anisotropic molecules.
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Affiliation(s)
- Zexu Zhang
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chunsan Deng
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xuhao Fan
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Minjing Li
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Mingduo Zhang
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xinger Wang
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Fayu Chen
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Shaoxi Shi
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yining Zhou
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Leimin Deng
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
- Optics Valley Laboratory, Hubei, 430074, China
| | - Hui Gao
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
- Optics Valley Laboratory, Hubei, 430074, China
| | - Wei Xiong
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
- Optics Valley Laboratory, Hubei, 430074, China
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3
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Tang C, Lu W, Zhang Y, Zhang W, Cui C, Liu P, Han L, Qian X, Chen L, Xu F, Mai Y. Toward Ultrahigh Rate and Cycling Performance of Cathode Materials of Sodium Ion Battery by Introducing a Bicontinuous Porous Structure. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402005. [PMID: 38598862 DOI: 10.1002/adma.202402005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/21/2024] [Indexed: 04/12/2024]
Abstract
The emerging sodium-ion batteries (SIBs) are one of the most promising candidates expected to complement lithium-ion batteries and diversify the battery market. However, the exploitation of cathode materials with high-rate performance and long-cycle stability for SIBs has remained one of the major challenges. To this end, an efficient approach to enhance rate and cycling performance by introducing an ordered bicontinuous porous structure into cathode materials of SIBs is demonstrated. Prussian blue analogues (PBAs) are selected because they are recognized as a type of most promising SIB cathode materials. Thanks to the presence of 3D continuous channels enabling fast Na+ ions diffusion as well as the intrinsic mechanical stability of bicontinuous architecture, the resultant PBAs exhibit excellent rate capability (80 mAh g-1 at 2.5 A g-1) and ultralong cycling life (>3000 circulations at 0.5 A g-1), reaching the top performance of the reported PBA-based cathode materials. This study opens a new avenue for boosting sluggish ion diffusion kinetics in electrodes of rechargeable batteries and also provides a new paradigm for solving the dilemma that electrodes' failure due to high-stress concentration upon ion storage.
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Affiliation(s)
- Chen Tang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Key Laboratory of Green and High-End Utilization of Salt Lake Resources (Chinese Academy of Sciences), In-situ Center for Physical Sciences, and Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Wei Lu
- School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration, Interdisciplinary Research Center, Institute of Refrigeration and Cryogenics, and MOE Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yixiao Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Key Laboratory of Green and High-End Utilization of Salt Lake Resources (Chinese Academy of Sciences), In-situ Center for Physical Sciences, and Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Wenwei Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Congcong Cui
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Pan Liu
- School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Lu Han
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Xiaoshi Qian
- School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration, Interdisciplinary Research Center, Institute of Refrigeration and Cryogenics, and MOE Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Liwei Chen
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Key Laboratory of Green and High-End Utilization of Salt Lake Resources (Chinese Academy of Sciences), In-situ Center for Physical Sciences, and Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Fugui Xu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Key Laboratory of Green and High-End Utilization of Salt Lake Resources (Chinese Academy of Sciences), In-situ Center for Physical Sciences, and Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yiyong Mai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Key Laboratory of Green and High-End Utilization of Salt Lake Resources (Chinese Academy of Sciences), In-situ Center for Physical Sciences, and Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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4
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Wang Y, Li YX, Li Q, Jia R, Tang Q, Huang H, Zhang Y, Feng X. Highly Ordered Gyroid Nanostructured Polymers: Facile Fabrication by Polymerizable Pluronic Surfactants. ACS Macro Lett 2024; 13:550-557. [PMID: 38634712 DOI: 10.1021/acsmacrolett.4c00161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Highly ordered, network-nanostructured polymers offer compelling geometric features and application potential. However, their practical utilization is hampered by the restricted accessibility. Here, we address this challenge using commercial Pluronic surfactants with a straightforward modification of tethering polymerizable groups. By leveraging lyotropic self-assembly, we achieve facile production of double-gyroid mesophases, which are subsequently solidified via photoinduced cross-linking. The exceptionally ordered periodicities of Ia3d symmetry in the photocured polymers are unambiguously confirmed by synchrotron small-angle X-ray scattering (SAXS), which can capture single-crystal-like diffraction patterns. Electron density maps reconstructed from SAXS data complemented by transmission electron microscopy analysis further elucidate the real-space gyroid assemblies. Intriguingly, by tuning the cross-linking through thiol-acrylate chemistry, the mechanical properties of the polymer are modulated without compromising the integrity of Ia3d assemblies. The 3-D percolating gyroid nanochannels demonstrate an ionic conductivity that surpasses that of disordered structures, offering promising prospects for scalable fabrication.
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Affiliation(s)
- Yinuo Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai 201620, China
| | - Ya-Xin Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Qing Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai 201620, China
| | - Ruoyin Jia
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Qingchen Tang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai 201620, China
| | - Hairui Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai 201620, China
| | - Yizhou Zhang
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, 980-8577, Japan
| | - Xunda Feng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai 201620, China
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5
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Zoppe JO. Cellulose Nanocrystal Allomorphs: Morphology, Self-Assembly, and Polymer End-Tethering toward Chiral Metamaterials. ACCOUNTS OF MATERIALS RESEARCH 2024; 5:385-391. [PMID: 38694188 PMCID: PMC11059101 DOI: 10.1021/accountsmr.3c00278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Indexed: 05/04/2024]
Affiliation(s)
- Justin O. Zoppe
- Universitat Politècnica
de Catalunya (UPC) − BarcelonaTech, POLY2 Group, Department
of Materials Science & Engineering, School of Industrial, Aerospace and Audiovisual Engineering of Terrassa
(ESEIAAT), Carrer de
Colom, 11, 08222 Terrassa, Spain
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6
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Li X, Wang J, Liu Y, Zhao T, Luo B, Liu T, Zhang S, Chi M, Cai C, Wei Z, Zhang P, Wang S, Nie S. Lightweight and Strong Cellulosic Triboelectric Materials Enabled by Cell Wall Nanoengineering. NANO LETTERS 2024; 24:3273-3281. [PMID: 38427598 DOI: 10.1021/acs.nanolett.4c00458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
As intelligent technology surges forward, wearable electronics have emerged as versatile tools for monitoring health and sensing our surroundings. Among these advancements, porous triboelectric materials have garnered significant attention for their lightness. However, these materials face the challenge of improving structural stability to further enhance the sensing accuracy of triboelectric sensors. In this study, a lightweight and strong porous cellulosic triboelectric material is designed by cell wall nanoengineering. By tailoring of the cell wall structure, the material shows a high mechanical strength of 51.8 MPa. The self-powered sensor constructed by this material has a high sensitivity of 33.61 kPa-1, a fast response time of 36 ms, and excellent pressure detection durability. Notably, the sensor still enables a high sensing performance after the porous cellulosic triboelectric material exposure to 200 °C and achieves real-time feedback of human motion, thereby demonstrating great potential in the field of wearable electronic devices.
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Affiliation(s)
- Xiuzhen Li
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Jinlong Wang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Yanhua Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Tong Zhao
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Bin Luo
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Tao Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Song Zhang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Mingchao Chi
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Chenchen Cai
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Zhiting Wei
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Puyang Zhang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Shuangfei Wang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
| | - Shuangxi Nie
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P. R. China
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7
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Ding X, Rubby MF, Que S, Uchayash S, Que L. Facile Process for Fabrication of Silicon Micro-Nanostructures of Different Shapes as Molds for Fabricating Flexible Micro-Nanostructures and Wearable Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:12202-12208. [PMID: 36808523 DOI: 10.1021/acsami.2c22285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We report a method to fabricate silicon micro-nanostructures of different shapes by tuning the number of layers and the sizes of self-assembled polystyrene beads, which serve as the mask, and by tuning the reactive ion etching (RIE) time. This process is simple, scalable, and inexpensive without using any sophisticated nanomanufacturing equipment. Specifically, in this work, we demonstrate the proposed process by fabricating silicon micro- or nanoflowers, micro- or nanobells, nanopyramids, and nanotriangles using a self-assembled monolayer or bilayer of polystyrene beads as the mask. We also fabricate flexible micro-nanostructures by using silicon molds with micro-nanostructures. Finally, we demonstrate the fabrication of bandage-type electrochemical sensors with micro-nanostructured working electrodes for detecting dopamine, a neurotransmitter related to stress and neurodegenerative diseases in artificial sweat. All these demonstrations indicate that the proposed process provides a low-cost, easy-to-use approach for fabricating silicon micro-nanostructures and flexible micro-nanostructures, thus paving a way for developing wearable micro-nanostructures enabled sensors for a variety of applications in an efficient manner.
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Affiliation(s)
- Xiaoke Ding
- Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Md Fazlay Rubby
- Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Suya Que
- School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Sajid Uchayash
- Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Long Que
- Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
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8
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Wu H, Huang H, Zhang Y, Lu X, Majewski PW, Feng X. Stabilizing Differential Interfacial Curvatures by Mismatched Molecular Geometries: Toward Polymers with Percolating 1 nm Channels of Gyroid Minimal Surfaces. ACS NANO 2022; 16:21139-21151. [PMID: 36516967 DOI: 10.1021/acsnano.2c09103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Soft materials with self-assembled networks possess saddle-shaped interfaces with distributed negative Gaussian curvatures. The ability to stabilize such a geometry is critically important for various applications but can be challenging due to the possibly "deficient" packing of the building blocks. This nontrivial challenge has been manifested, for example, by the limited availability of cross-linkable bicontinuous cubic (Q) liquid crystals (LCs), which can be utilized to fabricate compelling polymers with networked nanochannels uniformly sized at ∼1 nm. Here, we devise a facile approach to stabilizing cross-linkable Q mesophases by leveraging the synergistic self-assembly from pairs of scalably synthesized polymerizable amphiphiles. Hybridization of the molecular geometries by mixing significantly increases the propensity of the local deviations in the interfacial curvature specifically required for Q assemblies. "Normal" (type 1) double gyroid LCs possessing 1 nm ionic channels conforming to minimal surfaces can be formulated by simultaneous hydration of the amphiphile mixtures, as opposed to the formation of hexagonal or lamellar mesophases exhibited by the single-amphiphile systems, respectively. Fixation of the bicontinuous network in polymers via radical polymerization has been efficaciously facilitated by the presence of the bifunctional polymerizable groups in one of the employed amphiphiles. High-fidelity lock-in of the ordered continuous 1 nm channels has been unambiguously confirmed by the observation of single-crystal-like diffraction patterns from synchrotron small-angle X-ray scattering and large-area periodicities by transmission electron microscopy. The produced polymeric materials exhibit the required mechanical integrity as well as chemical robustness in a variety of organic solvents that benefit their practical applications for selective transport of ions and molecules.
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Affiliation(s)
- Hanyu Wu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai201620, People's Repubic of China
| | - Hairui Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai201620, People's Repubic of China
| | - Yizhou Zhang
- Key Laboratory of Organic Compound Pollution Control Engineering, Ministry of Education, and School of Environmental and Chemical Engineering, Shanghai University, Shanghai200444, People's Repubic of China
| | - Xinglin Lu
- CAS Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei, Anhui230026, People's Repubic of China
| | - Pawel W Majewski
- Department of Chemistry, University of Warsaw, Warsaw02089, Poland
| | - Xunda Feng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, and College of Materials Sciences and Engineering, Donghua University, Shanghai201620, People's Repubic of China
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9
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Qiu S, Li Z, Ye X, Ying X, Zhou J, Wang Y. Selective Swelling of Polystyrene (PS)/Poly(dimethylsiloxane) (PDMS) Block Copolymers in Alkanes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shoutian Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Zhuo Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Xiangyue Ye
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Xiang Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Jiemei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Yong Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
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10
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Lee TL, Lin JW, Ho RM. Controlled Self-Assembly of Polystyrene- block-Polydimethylsiloxane for Fabrication of Nanonetwork Silica Monoliths. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54194-54202. [PMID: 36404593 DOI: 10.1021/acsami.2c15078] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Herein, this work aims to carry out controlled self-assembly of single-composition block copolymer for the fabrication of various nanonetwork silica monoliths. With the use of lamellae-forming polystyrene-block-polydimethylsiloxane (PS-b-PDMS), nanonetwork-structured films could be fabricated by solvent annealing using a PS-selective solvent (chloroform). By simply tuning the flow rate of nitrogen purge to the PS-selective solvent for the controlled self-assembly of the PS-b-PDMS, gyroid- and diamond-structured monoliths can be formed due to the difference in the effective volume of PS in the PS-b-PDMS during solvent annealing. As a result, well-ordered nanonetwork SiO2 (silica) monoliths can be fabricated by templated sol-gel reaction using hydrofluoric acid etched PS-b-PDMS film as a template followed by the removal of the PS. This bottom-up approach for the fabrication of nanonetwork materials through templated synthesis is appealing to create nanonetwork materials for various applications.
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Affiliation(s)
- Tsung-Lun Lee
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu30013, Taiwan
| | - Jheng-Wei Lin
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu30013, Taiwan
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu30013, Taiwan
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