1
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Ok S, Vayer M, Sinturel C. A decade of innovation and progress in understanding the morphology and structure of heterogeneous polymers in rigid confinement. SOFT MATTER 2021; 17:7430-7458. [PMID: 34341814 DOI: 10.1039/d1sm00522g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
When confined in nanoscale domains, polymers generally encounter changes in their structural, thermodynamics and dynamics properties compared to those in the bulk, due to the high amount of polymer/wall interfaces and limited amount of matter. The present review specifically deals with the confinement of heterogeneous polymers (i.e. polymer blends and block copolymers) in rigid nanoscale domains (i.e. bearing non-deformable solid walls) where the processes of phase separation and self-assembly can be deeply affected. This review focuses on the innovative contributions of the last decade (2010-2020), giving a summary of the new insights and understanding gained in this period. We conclude this review by giving our view on the most thriving directions for this topic.
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Affiliation(s)
- Salim Ok
- Petroleum Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat, 13109, Kuwait.
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2
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He HC, Chen YF, Wang SF, Shen MH, Lin YL, Chang CW, Sugiyama T, Chen JT. Laser-assisted nanowetting (LAN): Hierarchical Nanocomposites containing polymer/gold nanorods on breath figure films. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Ho JH, Shih TW, Liu CT, He HC, Lin YL, Lee LR, Lin KT, Tseng YH, Sugiyama T, Chen JT. Laser-Induced NanoKneading (LINK): Deformation of Patterned Azopolymer Nanopillar Arrays via Photo-Fluidization. Macromol Rapid Commun 2021; 42:e2000723. [PMID: 33543553 DOI: 10.1002/marc.202000723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/12/2021] [Indexed: 11/09/2022]
Abstract
Ordered arrays of polymer nanostructures have been widely investigated because of their promising applications such as solar-cell devices, sensors, and supercapacitors. It remains a great challenge, however, to manipulate the shapes of individual nanostructures in arrays for tailoring specific properties. In this study, an effective strategy to prepare anisotropic polymer nanopillar arrays via photo-fluidization is presented. Azobenzene-containing polymers (azopolymers) are first infiltrated into the nanopores of ordered anodic aluminum oxide (AAO) templates. After the removal of the AAO templates using weak bases, azopolymer nanopillar arrays can be prepared. Upon exposure of linearly polarized lights, azobenzene groups in the azopolymers undergo trans-cis-trans photoisomerization, causing mass migration and elongation of the nanopillar along with the polarization directions. As a result, anisotropic nanopillar arrays can be fabricated, of which the deformation degrees are controlled by the illumination times. Furthermore, patterned nanopillar arrays can also be constructed with designed photomasks. This work presents a practical and versatile strategy to fabricate arrays of anisotropic nanostructures for future technical applications.
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Affiliation(s)
- Jhih-Hao Ho
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Tsung-Wei Shih
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Chih-Ting Liu
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Hung-Chieh He
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Yu-Liang Lin
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Lin-Ruei Lee
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Kuan-Ting Lin
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Yu-Hsuan Tseng
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Teruki Sugiyama
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan.,Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan.,Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu, 30010, Taiwan
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4
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Lin KT, Chen YJ, Huang MR, Karapala VK, Ho JH, Chen JT. Light-Induced Nanowetting: Erasable and Rewritable Polymer Nanoarrays via Solid-to-Liquid Transitions. NANO LETTERS 2020; 20:5853-5859. [PMID: 32697594 DOI: 10.1021/acs.nanolett.0c01764] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Template wetting methods have been widely applied in the preparation of one-dimensional (1D) polymer nanomaterials. The pattern control using the template wetting methods, however, still remains a great challenge, mainly due to the nonselectivity of the polymers toward the environmental triggering. In this work, we present a facile light-induced nanowetting (LIN) method to fabricate patterned nanoarrays using anodic aluminum oxide (AAO) templates. Photoresponsive azobenzene-containing polymers (azopolymers) that exhibit light-induced reversible solid-to-liquid transitions are used. Upon exposure to ultraviolet lights, the azopolymer chains can wet the nanopores of the AAO templates in a liquid state via capillary force. The azopolymer chains are then solidified by illuminating them with visible lights, resulting in the formation of azopolymer nanoarrays. Notably, using designed photomasks, the patterns of the nanoarrays can be ingeniously controlled with the characteristic of erasable and rewritable nanostructures.
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Affiliation(s)
- Kuan-Ting Lin
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | - Yu-Jia Chen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | - Meng-Ru Huang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | | | - Jhih-Hao Ho
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | - Jiun-Tai Chen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
- Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu, Taiwan 30010
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5
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Cheng MH, Yao IC, Chiu TY, Chen JT. Block copolymer micelles confined in cylindrical nanopores: Effects of annealing solvents and hybridization. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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He H, Yan A, Karapala VK, Wang S, Shen M, Lin Y, Chen Y, Sugiyama T, Chen J. Laser‐Assisted Nanowetting: Selective Fabrication of Polymer/Gold Nanorod Arrays Using Anodic Aluminum Oxide Templates. Macromol Rapid Commun 2020; 41:e2000035. [DOI: 10.1002/marc.202000035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Hung‐Chieh He
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Ai‐Ling Yan
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | | | - Shun‐Fa Wang
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Ming‐Hui Shen
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Yu‐Liang Lin
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Yi‐Fan Chen
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Teruki Sugiyama
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
- Graduate School of Materials ScienceNara Institute of Science and Technology Ikoma Nara 630‐0192 Japan
- Center for Emergent Functional Matter ScienceNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Jiun‐Tai Chen
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
- Center for Emergent Functional Matter ScienceNational Chiao Tung University Hsinchu 30010 Taiwan
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7
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Chang CW, Tu YH, Luo KH, Chen JT. From Block Copolymer Nanotubes to Nanospheres: Nonsolvent-Induced Morphology Transformation Using Porous Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14388-14394. [PMID: 30376343 DOI: 10.1021/acs.langmuir.8b03250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Block copolymer nanostructures have attracted great attention because of the wide range of applications such as sensors and drug delivery. The fabrication of block copolymer nanostructures with controlled morphologies and sizes, however, is still challenging. Here, we study the fabrication of nanotubes and nanospheres of polystyrene- block-polybutadiene (PS- b-PBD) using anodic aluminum oxide (AAO) templates. When PS- b-PBD solutions in N-methyl-2-pyrrolidone are introduced into the nanopores of the AAO templates applying the traditional solution wetting method, PS- b-PBD nanotubes can be obtained. When PS- b-PBD solutions in the nanopores are in contact with a nonsolvent, acetic acid, PS- b-PBD nanospheres are formed. Two possible mechanisms are proposed to discuss the formation of the nonsolvent-driven morphology transformation, including the Rayleigh-instability-type transformation mechanism and the nucleation and growth mechanism. The effect of the polymer concentrations on the internal morphologies of the PS- b-PBD nanostructures is discussed; at higher concentrations, PS- b-PBD nanocapsules can also be prepared. Furthermore, core-shell PS- b-PBD/polymethylmethacrylate nanospheres can be fabricated using this strategy with polymer blend solutions. This work not only demonstrates a simple strategy to control the morphologies of block copolymer nanostructures but also deepens the understanding of the interactions between polymer solutions and solvents.
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Lee LR, Liu CT, Tseng HF, Lin KT, Chu CW, Chen JT. Hierarchical Polymer Structures Using Templates and the Modified Breath Figure Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7472-7478. [PMID: 29804459 DOI: 10.1021/acs.langmuir.8b01381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hierarchical structures are commonly observed in nature and possess unique properties. The fabrication of hierarchical structures with well-controlled sizes in different length scales, however, is still a great challenge. To further understand the morphologies and properties of the hierarchical structures, here we present a novel strategy to prepare hierarchical polymer structures by combining the modified breath figure method and the template method. Poly(methyl methacrylate) (PMMA) honeycomb films with regular micropores are first prepared using the modified breath figure method by dipping PMMA films into mixtures of chloroform and methanol. The polymer chains on the honeycomb films are then annealed and wetted into the nanopores of anodic aluminum oxide templates via capillary forces, resulting in the formation of hierarchical polymer structures. The morphologies of the polymer structures, which can be controlled by the molecular weights of the polymers and the concentrations of the polymer solutions, are characterized by scanning electron microscopy. The surface wettabilities of the polymer structures are also examined by water contact angle measurements, and the hierarchical structures are observed to be more hydrophobic than the flat films and honeycomb films. This work not only provides a feasible approach to fabricate hierarchical polymer structures with controlled sizes but also gives a better understanding of the relationship between surface morphologies and properties.
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9
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Jeng KS, Chu CW, Liu CL, Jean WM, Chen HL, Chen JT. Orientation Preferences of Interchain Stackings for Poly(3-hexylthiophene) Nanowires Prepared Using Template-Based Wetting Methods. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kai-Sheng Jeng
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Chien-Wei Chu
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Chien-Liang Liu
- Department of Chemical Engineering; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Woan-Mei Jean
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Hsin-Lung Chen
- Department of Chemical Engineering; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
- Center for Emergent Functional Matter Science; National Chiao Tung University; Hsinchu 30010 Taiwan
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10
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Molecular self-assembly of one-dimensional polymer nanostructures in nanopores of anodic alumina oxide templates. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.10.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Chang CW, Cheng MH, Ko HW, Chu CW, Tu YH, Chen JT. Microwave-annealing-induced nanowetting of block copolymers in cylindrical nanopores. SOFT MATTER 2017; 14:35-41. [PMID: 29210440 DOI: 10.1039/c7sm02103h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Block copolymers have attracted great attention because of their abilities to self-assemble into well-ordered microphase-separated structures. To generate nanopatterns of block copolymers with long-range ordering and low-defect densities in shorter time scales, microwave annealing has recently been applied. Microwave annealing, however, has so far only been used for block copolymer bulks and thin films. In this work, we discover that microwave annealing can be successfully applied to three-dimensional block copolymer nanostructures by studying the infiltration and microphase separation of block copolymers in cylindrical nanopores upon microwave irradiation. Cylinder-forming and lamella-forming poly(styrene-block-dimethylsiloxane) (PS-b-PDMS) are introduced into the nanopores of anodic aluminum oxide (AAO) templates. In addition, AAO templates with different pore sizes are used to study the effect of the commensurabilities between the pore diameters and the repeating periods of the block copolymers on the morphologies of the block copolymer nanostructures.
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Affiliation(s)
- Chun-Wei Chang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan.
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12
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Ko HW, Higuchi T, Chang CW, Cheng MH, Isono K, Chi MH, Jinnai H, Chen JT. Controlled self-assemblies of polystyrene-block-polydimethylsiloxane micelles in cylindrical confinement through a micelle solution wetting method and Rayleigh-instability-driven transformation. SOFT MATTER 2017; 13:5428-5436. [PMID: 28702567 DOI: 10.1039/c7sm01024a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Block copolymer micelles have been extensively discussed for many decades because of their applications, such as lithography and drug delivery. However, controlling the morphologies of nanostructure assembly using block copolymer micelles as building elements remains a great challenge. In this work, we developed a novel route to induce micelle assembly in confined geometries. Polystyrene-block-polydimethylsiloxane (PS-b-PDMS) micelle solutions were used to prepare micelle nanostructures, and the critical parameters affecting the morphologies were determined. Micelle nanorods, micelle nanospheres, and multi-component nanopeapods were prepared by wetting anodic aluminum oxide (AAO) templates with micelle solutions. Rayleigh-instability-driven transformation was discovered to play an important role in controlling the morphologies of the micelle nanostructures. This study not only proposes a versatile approach to preparing block copolymer micelle nanostructures, but it also provides deeper insight into the controlling factors of block copolymer micelle morphologies in cylindrical confinement.
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Affiliation(s)
- Hao-Wen Ko
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 30010, Taiwan.
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13
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Cheng MH, Hsu YC, Chang CW, Ko HW, Chung PY, Chen JT. Blending Homopolymers for Controlling the Morphology Transitions of Block Copolymer Nanorods Confined in Cylindrical Nanopores. ACS APPLIED MATERIALS & INTERFACES 2017; 9:21010-21016. [PMID: 28558189 DOI: 10.1021/acsami.7b05415] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The microphase separation of block copolymers in confined geometries has been widely investigated over the last few decades. The controllability and versatility of the confinement-induced morphologies, however, are still difficult to be achieved because of the limited experimental parameters in the process of fabricating the confined nanostructures. In this work, we study the morphology transitions of lamellae-forming polystyrene-block-polydimethylsiloxane (PS-b-PDMS) nanorods confined in the nanopores of anodic aluminum oxide (AAO) templates. The nanorods are formed by solvent-assisted template wetting, and the morphologies are compared to those in the bulk state. By blending PS-b-PDMS with homopolystyrene (hPS), the morphologies of the nanorods can be controlled because of the changes of the effective volume fractions. Special morphology transitions from concentric lamellar morphology, to multihelical morphology, and finally to spherical-like morphology are observed by increasing the weight ratios of hPS. hPS with different molecular weights is also applied to investigate the effect of hPS on the morphologies of the PS-b-PDMS/hPS blend nanostructures. The unusual morphologies are further confirmed by a selective removal process, which also generates nanochannels for possible refilling with functional materials.
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Affiliation(s)
- Ming-Hsiang Cheng
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Yu-Chen Hsu
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Chun-Wei Chang
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Hao-Wen Ko
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Pei-Yun Chung
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Jiun-Tai Chen
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
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14
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Sanz B, von Bilderling C, Tuninetti JS, Pietrasanta L, Mijangos C, Longo GS, Azzaroni O, Giussi JM. Thermally-induced softening of PNIPAm-based nanopillar arrays. SOFT MATTER 2017; 13:2453-2464. [PMID: 28287232 DOI: 10.1039/c7sm00206h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The surface properties of soft nanostructured hydrogels are crucial in the design of responsive materials that can be used as platforms to create adaptive devices. The lower critical solution temperature (LCST) of thermo-responsive hydrogels such as poly(N-isopropylacrylamide) (PNIPAm) can be modified by introducing a hydrophilic monomer to create a wide range of thermo-responsive micro-/nano-structures in a large temperature range. Using surface initiation atom-transfer radical polymerization in synthesized anodized aluminum oxide templates, we designed, fabricated, and characterized thermo-responsive nanopillars based on PNIPAm hydrogels with tunable mechanical properties by incorporating acrylamide monomers (AAm). In addition to their LCST, the incorporation of a hydrophilic entity in the nanopillars based on PNIPAm has abruptly changed the topological and mechanical properties of our system. To gain an insight into the mechanical properties of the nanostructure, its hydrophilic/hydrophobic behavior and topological characteristics, atomic force microscopy, molecular dynamics simulations and water contact angle studies were combined. When changing the nanopillar composition, a significant and opposite variation was observed in their mechanical properties. As temperature increased above the LCST, the stiffness of PNIPAm nanopillars, as expected, did so too, in contrast to the stiffness of PNIPAm-AAm nanopillars that decreased significantly. The molecular dynamics simulations proposed a local molecular rearrangement in our nanosystems at the LCST. The local aggregation of NIPAm segments near the center of the nanopillars displaced the hydrophilic AAm units towards the surface of the structure leading to contact with the aqueous environment. This behavior was confirmed via contact angle measurements below and above the LCST.
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Affiliation(s)
- Belén Sanz
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Catalina von Bilderling
- Instituto de Física de Buenos Aires (IFIBA-CONICET) and Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EHA Buenos Aires, Argentina
| | - Jimena S Tuninetti
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) - Departamento de Química - Facultad de Ciencias Exactas - Universidad Nacional de La Plata - CONICET, 1900 La Plata, Argentina.
| | - Lía Pietrasanta
- Instituto de Física de Buenos Aires (IFIBA-CONICET) and Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EHA Buenos Aires, Argentina and Centro de Microscopías Avanzadas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EHA Buenos Aires, Argentina
| | - Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Gabriel S Longo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) - Departamento de Química - Facultad de Ciencias Exactas - Universidad Nacional de La Plata - CONICET, 1900 La Plata, Argentina.
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) - Departamento de Química - Facultad de Ciencias Exactas - Universidad Nacional de La Plata - CONICET, 1900 La Plata, Argentina.
| | - Juan M Giussi
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) - Departamento de Química - Facultad de Ciencias Exactas - Universidad Nacional de La Plata - CONICET, 1900 La Plata, Argentina.
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15
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Toolan DTW, Adlington K, Isakova A, Kalamiotis A, Mokarian-Tabari P, Dimitrakis G, Dodds C, Arnold T, Terrill NJ, Bras W, Hermida Merino D, Topham PD, Irvine DJ, Howse JR. Selective molecular annealing: in situ small angle X-ray scattering study of microwave-assisted annealing of block copolymers. Phys Chem Chem Phys 2017; 19:20412-20419. [DOI: 10.1039/c7cp03578k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A new experimental set-up facilitating in situ SAXS during microwave annealing of polymers.
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16
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Chi MH, Su CH, Cheng MH, Chung PY, Peng CH, Chen JT. Shaping the Light: The Key Factors Affecting the Photophysical Properties of Fluorescent Polymer Nanostructures. Macromol Rapid Commun 2016; 37:2037-2044. [DOI: 10.1002/marc.201600529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 10/02/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Mu-Huan Chi
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Chun-Hsien Su
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Ming-Hsiang Cheng
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Pei-Yun Chung
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Chi-How Peng
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
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17
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Abstract
Nature makes use of tubular structures for the spatial separation of matter on many different length scales, ranging from the nanometer scale (selective channels based on folded proteins) up to the centimeter scale (blood vessels). Today, polymer chemists and engineers can prepare polymeric tubular structures via a variety of different methods also covering many lengthscales, from nanometers to meters. The synthetic approaches described in this chapter vary significantly from the folding of single polymer chains via the self-assembly of DNA fragments to coordinative metal-organic nanotubes to tubes engineerd from bulk polymers using a range of porous or fibrous templates. While all examples reported in this chapter form tubular structures and thereby mimic their naturally occuring counterparts, it is mainly the engineered tubes that are more straightforward to prepare that also show some bio-inspired function.
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Affiliation(s)
- Samantha Doninelli
- Department of Chemistry, University of Fribourg Chemin du Musée 9 CH-1700 Fribourg Switzerland
| | - Michael Badoux
- Department of Chemistry, University of Fribourg Chemin du Musée 9 CH-1700 Fribourg Switzerland
| | - Andreas F. M. Kilbinger
- Department of Chemistry, University of Fribourg Chemin du Musée 9 CH-1700 Fribourg Switzerland
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18
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Chu CW, Jeng KS, Chi MH, Tsai CC, Cheng MH, Chen JT. Confinement Effects on the Optical Properties and Chain Conformations of Poly(9,9-di-n
-octylfluorene-alt
-benzothiadiazole) Nanotubes. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600178] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chien-Wei Chu
- Department of Applied Chemistry; National Chiao Tung University; 1001 Ta Hsueh Road Hsinchu 30010 Taiwan
| | - Kai-Sheng Jeng
- Department of Applied Chemistry; National Chiao Tung University; 1001 Ta Hsueh Road Hsinchu 30010 Taiwan
| | - Mu-Huan Chi
- Department of Applied Chemistry; National Chiao Tung University; 1001 Ta Hsueh Road Hsinchu 30010 Taiwan
| | - Chia-Chan Tsai
- Department of Applied Chemistry; National Chiao Tung University; 1001 Ta Hsueh Road Hsinchu 30010 Taiwan
| | - Ming-Hsiang Cheng
- Department of Applied Chemistry; National Chiao Tung University; 1001 Ta Hsueh Road Hsinchu 30010 Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry; National Chiao Tung University; 1001 Ta Hsueh Road Hsinchu 30010 Taiwan
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19
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Ko HW, Cheng MH, Chi MH, Chang CW, Chen JT. Selective Template Wetting Routes to Hierarchical Polymer Films: Polymer Nanotubes from Phase-Separated Films via Solvent Annealing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2110-2116. [PMID: 26831764 DOI: 10.1021/acs.langmuir.5b04746] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate a novel wetting method to prepare hierarchical polymer films with polymer nanotubes on selective regions. This strategy is based on the selective wetting abilities of polymer chains, annealed in different solvent vapors, into the nanopores of porous templates. Phase-separated films of polystyrene (PS) and poly(methyl methacrylate) (PMMA), two commonly used polymers, are prepared as a model system. After anodic aluminum oxide (AAO) templates are placed on the films, the samples are annealed in vapors of acetic acid, in which the PMMA chains are swollen and wet the nanopores of the AAO templates selectively. As a result, hierarchical polymer films containing PMMA nanotubes can be obtained after the AAO templates are removed. The distribution of the PMMA nanotubes of the hierarchical polymer films can also be controlled by changing the compositions of the polymer blends. This work not only presents a novel method to fabricate hierarchical polymer films with polymer nanotubes on selective regions, but also gives a deeper understanding in the selective wetting ability of polymer chains in solvent vapors.
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Affiliation(s)
- Hao-Wen Ko
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Ming-Hsiang Cheng
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Mu-Huan Chi
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Chun-Wei Chang
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
| | - Jiun-Tai Chen
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu, Taiwan 30010
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Tan AW, Torkelson JM. Poly(methyl methacrylate) nanotubes in AAO templates: Designing nanotube thickness and characterizing the T-confinement effect by DSC. POLYMER 2016. [DOI: 10.1016/j.polymer.2015.11.054] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ko HW, Chang CW, Chi MH, Chu CW, Cheng MH, Fang ZX, Luo KH, Chen JT. Hierarchical hybrid nanostructures: controlled assembly of polymer-encapsulated gold nanoparticles via a Rayleigh-instability-driven transformation under cylindrical confinement. RSC Adv 2016. [DOI: 10.1039/c6ra10430d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
A novel method to fabricate hierarchical hybrid nanostructures assembled from polystyrene-encapsulated gold nanoparticles is developed.
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Affiliation(s)
- Hao-Wen Ko
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
| | - Chun-Wei Chang
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
| | - Mu-Huan Chi
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
| | - Chien-Wei Chu
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
| | - Ming-Hsiang Cheng
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
| | - Zhi-Xuan Fang
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
| | - Ke-Hsuan Luo
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
| | - Jiun-Tai Chen
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu
- Taiwan 30010
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Chi MH, Chang CW, Ko HW, Su CH, Lee CW, Peng CH, Chen JT. Solvent-Induced Dewetting on Curved Substrates: Fabrication of Porous Polymer Nanotubes by Anodic Aluminum Oxide Templates. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01207] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Mu-Huan Chi
- Department
of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | - Chun-Wei Chang
- Department
of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | - Hao-Wen Ko
- Department
of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | - Chun-Hsien Su
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua University, Hsinchu, Taiwan 30013
| | - Chih-Wei Lee
- Department
of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
| | - Chi-How Peng
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua University, Hsinchu, Taiwan 30013
| | - Jiun-Tai Chen
- Department
of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30010
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