1
|
Bae S, Kim DH, Kim SY. Constructing a Comprehensive Nanopattern Library through Morphological Transitions of Block Copolymer Surface Micelles via Direct Solvent Immersion. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311939. [PMID: 38461516 DOI: 10.1002/smll.202311939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/23/2024] [Indexed: 03/12/2024]
Abstract
This study establishes a comprehensive library of nanopatterns achievable by a single block copolymer (BCP), ranging from spheres to complex structures like split micelles, flower-like clusters, toroids, disordered micelle arrays, and unspecified unique shapes. The ordinary nanostructures of polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) surface micelles deposited on a SiOx surface undergo a unique morphology transformation when immersed directly in solvents. Investigating parameters such as immersion solvents, BCP molecular weight, substrate interactions, and temperature, this work reveals the influence of these parameters on the thermodynamics and kinetics governing the morphology transformation. Additionally, the practical application of BCP nanopattern templates for fabricating metal nanostructures through direct solvent immersion of surface micelles is demonstrated. This approach offers an efficient and effective method for producing diverse nanostructures, with the potential to be employed in nanolithography, catalysts, electronics, membranes, plasmonics, and photonics.
Collapse
Affiliation(s)
- Seokyoung Bae
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dong Hyup Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
| | - So Youn Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| |
Collapse
|
2
|
Lin G, Tao J, Sun Y, Cui Y, Manners I, Qiu H. Breaking of Lateral Symmetry in Two-Dimensional Crystallization-Driven Self-Assembly on a Surface. J Am Chem Soc 2024; 146:14734-14744. [PMID: 38748980 DOI: 10.1021/jacs.4c02390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Symmetry breaking is prevalent in nature and provides distinctive access to hierarchical structures for artificial materials. However, it is rarely explored in two-dimensional (2D) entities, especially for lateral asymmetry. Herein, we describe a unique symmetry breaking process in surface-initiated 2D living crystallization-driven self-assembly. The 2D epitaxial growth occurs only at one lateral side of the immobilized cylindrical micelle seeds, accessing unilateral platelets with the yield increasing with the seed length, the growth temperature, and poly(2-vinylpyridine) corona length (maximum = 92%). Generally, the tilted immobilization of seeds blocks one lateral side and triggers the lateral symmetry breaking, where the intensity and spatial arrangement of seed-surface interactions dictate the regulation. Segmented unilateral platelets with segmented corona regions are further fabricated with the addition of different blended unimers. Remarkably, discrete slope-like and dense blade-like platelet arrays grow off the surface when seeds are compactly aligned either with spherical micelles or themselves. This strategy provides nanoscale insights into the symmetry breaking in long-range self-assembly and would be promising for the design of innovative colloids and smart surfaces.
Collapse
Affiliation(s)
- Geyu Lin
- School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jiawei Tao
- School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yan Sun
- School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yan Cui
- School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P5C2, Canada
| | - Huibin Qiu
- School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| |
Collapse
|
3
|
Niu B, Huang H, Zhang L, Tan J. Grafting Block Copolymer Nanoparticles to a Surface via Aqueous Photoinduced Polymerization-induced Self-Assembly at Room Temperature. ACS Macro Lett 2024; 13:577-585. [PMID: 38648524 DOI: 10.1021/acsmacrolett.4c00098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The creation of well-defined surface nanostructures is important for a diverse set of applications such as cell adhesion, superhydrophobic coating, and lithography. In this study, we describe a robust bottom-up method for surface functionalization that involves surface-initiated reversible deactivation radical polymerization (RDRP) and the grafting of block copolymer nanoparticles to material surfaces via aqueous photoinduced polymerization-induced self-assembly (photo-PISA) at room temperature. Using silica nanoparticles as a model substrate, colloidal mesoscale hybrid assemblies with various morphologies were successfully prepared. The morphologies can be easily tuned by changing the lengths of macromolecular chain transfer agents and parameters of the silica nanoparticles. The surface-initiated photo-PISA approach can also be employed for other large-scale substrates such as silicon wafer. Taking advantage of mild reaction conditions of this method (room temperature, aqueous medium, and visible light), enzymatic deoxygenation was introduced to develop oxygen-tolerant surface-initiated photo-PISA that can fabricate well-defined nanostructures on large-scale substrates under open-to-air conditions.
Collapse
Affiliation(s)
- Bing Niu
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Honggao Huang
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Li Zhang
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China
| | - Jianbo Tan
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China
| |
Collapse
|
4
|
Lu Y, Gao J, Ren Y, Ding Y, Jia L. Synergetic Self-Assembly of Liquid Crystalline Block Copolymer with Amphiphiles for Fabrication of Hierarchical Assemblies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304955. [PMID: 37649168 DOI: 10.1002/smll.202304955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/19/2023] [Indexed: 09/01/2023]
Abstract
Novel functions and advanced structure, where each single component could not be produced individually, can exhibit from the collective and synergistic behavior of component systems. This synergetic strategy has been successfully demonstrated for co-assembly of polymer-polymer to construct hierarchical nanomaterials. However, differences in the natures of polymer and small molecules impose challenges in the construction of sophisticated co-assemblies with geometrical and compositional control. Herein, a synergetic self-assembly strategy is proposed to prepare organic-organic hybrid colloidal mesostructures by blending a liquid crystalline block copolymer (LC-BCP) with small molecular amphiphiles. Through a classic solvent-exchange process, amphiphiles embedded with LC-BCP realize multi-component nucleation and hierarchical assembly driven by anisotropic interaction from the LC ordering alignment of the core-forming block. 1D nanofibers with a periodic striped structure are formed by further LC component fusion and refinement. In addition, LC ordering effect of LC-BCP can be regulated by selecting appropriate solvents and leads to the formation of vesicular co-micelles. By means of the thermal-responsive behavior of amphiphiles, hexagonal pore arrays are finally generated on the surface of those vesicles.
Collapse
Affiliation(s)
- Yue Lu
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Nanchen Street 333, Shanghai, 200444, China
| | - Juanjuan Gao
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Nanchen Street 333, Shanghai, 200444, China
| | - Yangge Ren
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Nanchen Street 333, Shanghai, 200444, China
| | - Yi Ding
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Nanchen Street 333, Shanghai, 200444, China
| | - Lin Jia
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Nanchen Street 333, Shanghai, 200444, China
| |
Collapse
|
5
|
Chen Y, Tan J, Shen L. Seeded RAFT Polymerization-Induced Self-assembly: Recent Advances and Future Opportunities. Macromol Rapid Commun 2023; 44:e2300334. [PMID: 37615609 DOI: 10.1002/marc.202300334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/30/2023] [Indexed: 08/25/2023]
Abstract
Over the past decade, polymerization-induced self-assembly (PISA) has fully proved its versatility for scale-up production of block copolymer nanoparticles with tunable sizes and morphologies; yet, there are still some limitations. Recently, seeded PISA approaches combing PISA with heterogeneous seeded polymerizations have been greatly explored and are expected to overcome the limitations of traditional PISA. In this review, recent advances in seeded PISA that have expanded new horizons for PISA are highlighted including i) general considerations for seeded PISA (e.g., kinetics, the preparation of seeds, the selection of monomers), ii) morphological evolution induced by seeded PISA (e.g., from corona-shell-core nanoparticles to vesicles, vesicles-to-toroid, disassembly of vesicles into nanospheres), and iii) various well-defined nanoparticles with hierarchical and sophisticated morphologies (e.g., multicompartment micelles, porous vesicles, framboidal vesicles, AXn -type colloidal molecules). Finally, new insights into seeded PISA and future perspectives are proposed.
Collapse
Affiliation(s)
- Yifei Chen
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325027, China
| | - Jianbo Tan
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Liangliang Shen
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325027, China
| |
Collapse
|
6
|
Lukáš Petrova S, Sincari V, Konefał R, Pavlova E, Hrubý M, Pokorný V, Jäger E. Microwave Irradiation-Assisted Reversible Addition-Fragmentation Chain Transfer Polymerization-Induced Self-Assembly of pH-Responsive Diblock Copolymer Nanoparticles. ACS OMEGA 2022; 7:42711-42722. [PMID: 36467927 PMCID: PMC9713868 DOI: 10.1021/acsomega.2c04036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/18/2022] [Indexed: 06/17/2023]
Abstract
Herein, we present a versatile platform for the synthesis of pH-responsive poly([N-(2-hydroxypropyl)]methacrylamide)-b-poly[2-(diisopropylamino)ethyl methacrylate] diblock copolymer (PHPMA-b-PDPA) nanoparticles (NPs) obtained via microwave-assisted reversible addition-fragmentation chain transfer polymerization-induced self-assembly (MWI-PISA). The N-(2-hydroxypropyl) methacrylamide (HPMA) monomer was first polymerized to obtain a macrochain transfer agent with polymerization degrees (DPs) of 23 and 51. Subsequently, using mCTA and 2-(diisopropylamino)ethyl methacrylate (DPA) as monomers, we successfully conducted MWI-PISA emulsion polymerization in aqueous solution with a solid content of 10 wt %. The NPs were obtained with high monomer conversion and polymerization rates. The resulting diblock copolymer NPs were analyzed by dynamic light scattering (DLS) and cryogenic-transmission electron microscopy (cryo-TEM). cryo-TEM studies reveal the presence of only NPs with spherical morphology such as micelles and polymer vesicles known as polymersomes. Under the selected conditions, we were able to fine-tune the morphology from micelles to polymersomes, which may attract considerable attention in the drug-delivery field. The capability for drug encapsulation using the obtained in situ pH-responsive NPs, the polymersomes based on PHPMA23-b-PDPA100, and the micelles based on PHPMA51-b-PDPA100 was demonstrated using the hydrophobic agent and fluorescent dye as Nile red (NR). In addition, the NP disassembly in slightly acidic environments enables fast NR release.
Collapse
|
7
|
Ma L, Huang H, Ercius P, Alexander-Katz A, Xu T. Symmetry-Breaking and Self-Sorting in Block Copolymer-Based Multicomponent Nanocomposites. ACS NANO 2022; 16:9368-9377. [PMID: 35638517 DOI: 10.1021/acsnano.2c02179] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Co-assembly of inorganic nanoparticles (NPs) and nanostructured polymer matrix represents an intricate interplay of enthalpic or entropic forces. Particle size largely affects the phase behavior of the nanocomposite. Theoretical studies indicate that new morphologies would emerge when the particles become comparable to the soft matrix's size, but this has rarely been supported experimentally. By designing a multicomponent blend composed of NPs, block copolymer-based supramolecules, and small molecules, a 3-D ordered lattice beyond the native BCP's morphology was recently reported when the particle is larger than the microdomain of BCP. The blend can accommodate various formulation variables. In this paper, when the particle size equals the microdomain size, a symmetry-broken phase appears in a narrow range of particle sizes and compositions, which we named the "train track" structure. In this phase, the NPs aligned into a 3-D hexagonal lattice and packed asymmetrically along the c axis, making the projection of the ac and the bc plane resemble train tracks. Computational studies show that the broken symmetry reduces the polymer chain deformation and stabilizes the metastable hexagonally perforated lamellar morphology. Given the mobility of the multicomponent blend, the system shows a self-sorting behavior: segregating into two macroscopic phases with different nanostructures based on only a few nanometers NP size differences. Smaller NPs form "train track" morphology, while larger NPs form a "simple hexagon" structure, where the NPs take a symmetric hexagonal arrangement. Detailed structural evolution and simulation studies confirm the systematic-wide cooperativity across different components, indicating the strong self-regulation of the multicomponent system.
Collapse
Affiliation(s)
- Le Ma
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Hejin Huang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Peter Ercius
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ting Xu
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| |
Collapse
|
8
|
Cai J, Manners I, Qiu H. "Self-Adaptive" Coassembly of Colloidal "Saturn-like" Host-Guest Complexes Enabled by Toroidal Micellar Rubber Bands. J Am Chem Soc 2022; 144:5734-5738. [PMID: 35324193 DOI: 10.1021/jacs.2c01109] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The creation of inclusion complexes with "Saturn-like" geometries has attracted increasing attention for supramolecular systems, but expansion of the concept to nanoscale colloidal systems remains a challenge. Here, we report a strategy to assemble toroidal polyisoprene-b-poly(2-vinylpyridine) (PI-b-P2VP) block copolymer micelles with a PI core and a P2VP corona and inorganic (e.g., silica) nanoparticles of variable shape and dimensions into "Saturn-like" constructs with high fidelity and yield. The precise nesting of the nanoparticles between the toroidal building units is realized by virtue of hydrogen bonding and self-adaptive expansion of the flexible toroidal units enabled by a flexible, low Tg PI core. Once the toroidal units are cross-linked, the self-adaptive feature is lost and coassembly yields instead out-of-cavity bound nanoparticles. "Saturn-like" assemblies can also be formed along silica nanosphere-decorated cylindrical micelles or, alternatively, at the hydroxyl-functionalized termini of cylindrical micelles to yield colloidal [3]rotaxanes.
Collapse
Affiliation(s)
- Jiandong Cai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.,Department of Chemistry, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Ian Manners
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.,Department of Chemistry, University of Victoria, Victoria, BC V8P 5C2, Canada.,Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Huibin Qiu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
9
|
Schmalz H, Abetz V. Block Copolymers with Crystallizable Blocks: Synthesis, Self-Assembly and Applications. Polymers (Basel) 2022; 14:polym14040696. [PMID: 35215610 PMCID: PMC8875877 DOI: 10.3390/polym14040696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/08/2022] [Indexed: 12/25/2022] Open
Abstract
Block copolymers with crystallizable blocks are a highly interesting class of materials owing to their unique self-assembly behaviour both in bulk and solution. This Special Issue brings together new developments in the synthesis and self-assembly of semicrystalline block copolymers and also addresses potential applications of these exciting materials.
Collapse
Affiliation(s)
- Holger Schmalz
- Macromolecular Chemistry II and Bavarian Polymer Institute, Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
- Correspondence: (H.S.); (V.A.)
| | - Volker Abetz
- Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146 Hamburg, Germany
- Institute of Membrane Research, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502 Geesthacht, Germany
- Correspondence: (H.S.); (V.A.)
| |
Collapse
|
10
|
Harniman RL, Pearce S, Manners I. Exploring the "Living" Growth of Block Copolymer Nanofibers from Surface-Confined Seeds by In Situ Solution-Phase Atomic Force Microscopy. J Am Chem Soc 2022; 144:951-962. [PMID: 34985896 DOI: 10.1021/jacs.1c11209] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Living crystallization-driven self-assembly of polymeric and molecular amphiphiles is of growing interest as a seeded growth route to uniform 1D, 2D, and more complex micellar nanoparticles with controlled dimensions and a range of potential applications. Although most studies have been performed using colloidally stable seeds in bulk solution, growth of block copolymer (BCP) nanofibers from seeds confined to a surface is attracting increased attention. Herein, we have used atomic force microscopy (AFM) to undertake detailed studies of the growth of BCP nanofibers from immobilized seeds located on a Si surface. Through initial ex situ AFM studies and in situ AFM video analysis in solution, we determined that growth occurred in four stages, whereby an initial surface-bound growth regime transitions to surface-limited growth. As the nanofiber length increases, surface influence is diminished as the newly grown micelle segment is no longer bound to the Si substrate. Finally, a surface-independent regime occurs where nanofiber growth continues into bulk solution. In addition to the anticipated nanofiber elongation, our studies revealed occasional examples of AFM tip-induced core fragmentation. In these cases, the termini of the newly formed fragments were also active to further growth. Furthermore, unidirectional growth was detected in cases where the seed was oriented at a significant angle with respect to the surface, thereby restricting unimer access to one terminus.
Collapse
Affiliation(s)
- Robert L Harniman
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Samuel Pearce
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom.,Bristol Centre for Functional Nanomaterials, H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada.,Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
| |
Collapse
|
11
|
Textured and Hierarchically Constructed Polymer Micro- and Nanoparticles. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112110421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Microfluidic techniques allow for the tailored construction of specific microparticles, which are becoming increasingly interesting and relevant. Here, using a microfluidic hole-plate-device and thermal-initiated free radical polymerization, submicrometer polymer particles with a highly textured surface were synthesized. Two types of monomers were applied: (1) methylmethacrylate (MMA) combined with crosslinkers and (2) divinylbenzene (DVB). Surface texture and morphology can be influenced by a series of parameters such as the monomer–crosslinker–solvent composition, surfactants, and additives. Generally, the most structured surfaces with the simultaneously most uniform particles were obtained in the DVB–toluene–nonionic-tensides system. In a second approach, poly-MMA (PMMA) particles were used to build aggregates with bigger polymer particles. For this purpose, tripropyleneglycolediacrylate (TPGDA) particles were synthesized in a microfluidic co-flow arrangement and polymerized by light- irradiation. Then, PMMA particles were assembled at their surface. In a third step, these composites were dispersed in an aqueous acrylamide–methylenebisacrylamide solution, which again was run through a co-flow-device and photopolymerized. As such, entities consisting of particles of three different size ranges—typically 0.7/30/600 µm—were obtained. The particles synthesized by both approaches are potentially suitable for loading with or incorporation of analytic probes or catalysts such as dyes or metals.
Collapse
|
12
|
Self-regulated co-assembly of soft and hard nanoparticles. Nat Commun 2021; 12:5682. [PMID: 34584088 PMCID: PMC8479080 DOI: 10.1038/s41467-021-25995-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 08/30/2021] [Indexed: 11/30/2022] Open
Abstract
Controlled self-assembly of colloidal particles into predetermined organization facilitates the bottom-up manufacture of artificial materials with designated hierarchies and synergistically integrated functionalities. However, it remains a major challenge to assemble individual nanoparticles with minimal building instructions in a programmable fashion due to the lack of directional interactions. Here, we develop a general paradigm for controlled co-assembly of soft block copolymer micelles and simple unvarnished hard nanoparticles through variable noncovalent interactions, including hydrogen bonding and coordination interactions. Upon association, the hairy micelle corona binds with the hard nanoparticles with a specific valence depending exactly on their relative size and feeding ratio. This permits the integration of block copolymer micelles with a diverse array of hard nanoparticles with tunable chemistry into multidimensional colloidal molecules and polymers. Secondary co-assembly of the resulting colloidal molecules further leads to the formation of more complex hierarchical colloidal superstructures. Notably, such colloidal assembly is processible on surface either through initiating the alternating co-assembly from a micelle immobilized on a substrate or directly grafting a colloidal oligomer onto the micellar anchor. Colloidal self-assembly enables bottom-up manufacture of materials with designed hierarchies and functions. Here the authors develop a facile method to construct multidimensional colloidal architectures via the association of soft block copolymer micelles with simple unvarnished hard nanoparticles.
Collapse
|
13
|
Guerin G, Rupar PA, Winnik MA. In-Depth Analysis of the Effect of Fragmentation on the Crystallization-Driven Self-Assembly Growth Kinetics of 1D Micelles Studied by Seed Trapping. Polymers (Basel) 2021; 13:3122. [PMID: 34578023 PMCID: PMC8472273 DOI: 10.3390/polym13183122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 01/26/2023] Open
Abstract
Studying the growth of 1D structures formed by the self-assembly of crystalline-coil block copolymers in solution at elevated temperatures is a challenging task. Like most 1D fibril structures, they fragment and dissolve when the solution is heated, creating a mixture of surviving crystallites and free polymer chains. However, unlike protein fibrils, no new nuclei are formed upon cooling and only the surviving crystallites regrow. Here, we report how trapping these crystallites at elevated temperatures allowed us to study their growth kinetics at different annealing times and for different amounts of unimer added. We developed a model describing the growth kinetics of these crystallites that accounts for fragmentation accompanying the 1D growth process. We show that the growth kinetics follow a stretched exponential law that may be due to polymer fractionation. In addition, by evaluating the micelle growth rate as a function of the concentration of unimer present in solution, we could conclude that the micelle growth occurred in the mononucleation regime.
Collapse
Affiliation(s)
- Gerald Guerin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Paul A. Rupar
- Department of Chemistry, University of Alabama, Tuscaloosa, AL 35487, USA;
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E2, Canada
| |
Collapse
|
14
|
Tang Z, Gao L, Lin J, Cai C, Yao Y, Guerin G, Tian X, Lin S. Anchorage-Dependent Living Supramolecular Self-Assembly of Polymeric Micelles. J Am Chem Soc 2021; 143:14684-14693. [PMID: 34472352 DOI: 10.1021/jacs.1c06020] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Anchorage-dependent contact-inhibited growth usually refers to on-surface cell proliferation inhibited by the proximity of other cells. This phenomenon, prominent in nature, has yet to be achieved with polymeric micelles. Here, we report the control living supra-macromolecular self-assembly of elongated micelles with a liquid crystalline core onto a hydrophobic substrate via the synergetic interactions between the substrate and aggregates dispersed in solution. In this system, seed formation is a transient phenomenon induced by the adsorption and rearrangement of the core-swollen aggregates. The seeds then trigger the growth of elongated micelles onto the substrate in a living controllable manner until the contact with the substrate is disrupted. Brownian dynamic simulations show that this unique behavior is due to the fusion of the aggregates onto both ends of the anchored seeds. More important, the micelle length can be tuned by varying the substrate hydrophobicity, a key step toward the fabrication of intricate structures.
Collapse
Affiliation(s)
- Zhengmin Tang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Liang Gao
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiaping Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chunhua Cai
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yuan Yao
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Gerald Guerin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaohui Tian
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shaoliang Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| |
Collapse
|
15
|
Cao J, Tan Y, Chen Y, Zhang L, Tan J. Expanding the Scope of Polymerization-Induced Self-Assembly: Recent Advances and New Horizons. Macromol Rapid Commun 2021; 42:e2100498. [PMID: 34418199 DOI: 10.1002/marc.202100498] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/18/2021] [Indexed: 12/26/2022]
Abstract
Over the past decade or so, polymerization-induced self-assembly (PISA) has become a versatile method for rational preparation of concentrated block copolymer nanoparticles with a diverse set of morphologies. Much of the PISA literature has focused on the preparation of well-defined linear block copolymers by using linear macromolecular chain transfer agents (macro-CTAs) with high chain transfer constants. In this review, a recent process is highlighted from an unusual angle that has expanded the scope of PISA including i) synthesis of block copolymers with nonlinear architectures (e.g., star block copolymer, branched block copolymer) by PISA, ii) in situ synthesis of blends of polymers by PISA, and iii) utilization of macro-CTAs with low chain transfer constants in PISA. By highlighting these important examples, new insights into the research of PISA and future impact these methods will have on polymer and colloid synthesis are provided.
Collapse
Affiliation(s)
- Junpeng Cao
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yingxin Tan
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ying Chen
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China
| | - Li Zhang
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China
| | - Jianbo Tan
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China
| |
Collapse
|
16
|
Tong Z, Su Y, Jiang Y, Xie Y, Chen S, O’Reilly RK. Spatially Restricted Templated Growth of Poly(ε-caprolactone) from Carbon Nanotubes by Crystallization-Driven Self-Assembly. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02739] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zaizai Tong
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Institute of Smart Biomedical Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yawei Su
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Institute of Smart Biomedical Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yikun Jiang
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yujie Xie
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Shichang Chen
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Rachel K. O’Reilly
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| |
Collapse
|
17
|
MacFarlane L, Zhao C, Cai J, Qiu H, Manners I. Emerging applications for living crystallization-driven self-assembly. Chem Sci 2021; 12:4661-4682. [PMID: 34163727 PMCID: PMC8179577 DOI: 10.1039/d0sc06878k] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/12/2021] [Indexed: 01/02/2023] Open
Abstract
The use of crystallization as a tool to control the self-assembly of polymeric and molecular amphiphiles in solution is attracting growing attention for the creation of non-spherical nanoparticles and more complex, hierarchical assemblies. In particular, the seeded growth method termed living crystallization-driven self-assembly (CDSA) has been established as an ambient temperature and potentially scalable platform for the preparation of low dispersity samples of core-shell fiber-like or platelet micellar nanoparticles. Significantly, this method permits predictable control of size, and access to branched and segmented structures where functionality is spatially-defined. Living CDSA operates under kinetic control and shows many analogies with living chain-growth polymerizations of molecular organic monomers that afford well-defined covalent polymers of controlled length except that it covers a much longer length scale (ca. 20 nm to 10 μm). The method has been applied to a rapidly expanding range of crystallizable polymeric amphiphiles, which includes block copolymers and charge-capped homopolymers, to form assemblies with crystalline cores and solvated coronas. Living CDSA seeded growth methods have also been transposed to a wide variety of π-stacking and hydrogen-bonding molecular species that form supramolecular polymers in processes termed "living supramolecular polymerizations". In this article we outline the main features of the living CDSA method and then survey the promising emerging applications for the resulting nanoparticles in fields such as nanomedicine, colloid stabilization, catalysis, optoelectronics, information storage, and surface functionalization.
Collapse
Affiliation(s)
- Liam MacFarlane
- Department of Chemistry, University of Victoria British Columbia Canada
| | - Chuanqi Zhao
- Department of Chemistry, University of Victoria British Columbia Canada
| | - Jiandong Cai
- Department of Chemistry, University of Victoria British Columbia Canada
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Huibin Qiu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Ian Manners
- Department of Chemistry, University of Victoria British Columbia Canada
| |
Collapse
|
18
|
El-Zubir O, Kynaston EL, Gwyther J, Nazemi A, Gould OEC, Whittell GR, Horrocks BR, Manners I, Houlton A. Bottom-up device fabrication via the seeded growth of polymer-based nanowires. Chem Sci 2020; 11:6222-6228. [PMID: 32953017 PMCID: PMC7480267 DOI: 10.1039/d0sc02011g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/01/2020] [Indexed: 12/17/2022] Open
Abstract
Living crystallisation-driven self-assembly facilitates the bottom-up assembly of electronic devices.
The bottom-up assembly of nanoelectronic devices from molecular building blocks is a target of widespread interest. Herein we demonstrate an in situ seeded growth approach to produce a nanowire-based electrical device. This exploits the chemisorption of block terpolymer-based seed fibres with a thiophene-functionalised corona onto metal electrodes as the initial step. We then use these surface-bound seeds to initiate the growth of well-defined one-dimensional fibre-like micelles via the seeded growth method known as “Living crystallisation-driven self-assembly’’ and demonstrate that they are capable of spanning an interelectrode gap. Finally, a chemical oxidation step was used to transform the nanofibres into nanowires to generate a two-terminal device. This seeded growth approach of growing well-defined circuit elements provides a useful new design tool for bottom-up device fabrication.
Collapse
Affiliation(s)
- Osama El-Zubir
- Chemical Nanoscience Labs , School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , UK .
| | - Emily L Kynaston
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK
| | - Jessica Gwyther
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK
| | - Ali Nazemi
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK
| | - Oliver E C Gould
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK
| | - George R Whittell
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK
| | - Benjamin R Horrocks
- Chemical Nanoscience Labs , School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , UK .
| | - Ian Manners
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK.,Department of Chemistry , University of Victoria , Victoria , V8W 3V6 , British Columbia , Canada .
| | - Andrew Houlton
- Chemical Nanoscience Labs , School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , UK .
| |
Collapse
|
19
|
Cai J, Li C, Kong N, Lu Y, Lin G, Wang X, Yao Y, Manners I, Qiu H. Tailored multifunctional micellar brushes via crystallization-driven growth from a surface. Science 2020; 366:1095-1098. [PMID: 31780551 DOI: 10.1126/science.aax9075] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 10/17/2019] [Indexed: 12/13/2022]
Abstract
The creation of nanostructures with precise chemistries on material surfaces is of importance in a wide variety of areas such as lithography, superhydrophobicity, and cell adhesion. We describe a platform for surface functionalization that involves the fabrication of cylindrical micellar brushes on a silicon wafer through seeded growth of crystallizable block copolymers at the termini of immobilized, surface-confined crystallite seeds. The density, length, and coronal chemistry of the micellar brushes can be precisely tuned, and post-growth decoration with nanoparticles enables applications in catalysis and antibacterial surface modification. The micellar brushes can also be grown on ultrathin two-dimensional materials such as graphene oxide nanosheets and further assembled into a membrane for the separation of oil-in-water emulsions and gold nanoparticles.
Collapse
Affiliation(s)
- Jiandong Cai
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.,School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.,Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Na Kong
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yi Lu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Geyu Lin
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xinyan Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yuan Yao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Ian Manners
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China. .,School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.,Department of Chemistry, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Huibin Qiu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China. .,School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
20
|
Guerin G, Cruz M, Yu Q. Formation of 2D and 3D multi-tori mesostructures via crystallization-driven self-assembly. SCIENCE ADVANCES 2020; 6:eaaz7301. [PMID: 32494620 PMCID: PMC7159922 DOI: 10.1126/sciadv.aaz7301] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 01/22/2020] [Indexed: 06/11/2023]
Abstract
The fabrication of three-dimensional (3D) objects by polymer self-assembly in solution is extremely challenging. Here, multi-tori mesostructures were obtained from the crystallization-driven self-assembly of a coil-crystalline block copolymer (BCP) in mixed solvents. The formation of these structures follows a multistep process. First, the BCP self-assembles into amorphous micrometer-large vesicles. Then, the BCP confined in these mesosized vesicles crystallizes. This second step leads to the formation of objects with shapes ranging from closed 3D multi-tori spherical shells to 2D toroid mesh monolayers, depending on the solvent mixture composition. This approach demonstrates how topological constraints induced by the specific interactions between coil-crystalline BCP and solvents can be used to prepare mesostructures of complex morphologies.
Collapse
Affiliation(s)
- Gerald Guerin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Menandro Cruz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK
| | - Qing Yu
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| |
Collapse
|
21
|
Wang M, Zhu Y, Han L, Qi R, He F. Inky flower-like supermicelles assembled from π-conjugated block copolymers. Polym Chem 2020. [DOI: 10.1039/c9py01625b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conjugated block copolymers PPV7-b-P2VPn are utilized as building blocks to construct inky flower-like hierarchical supermicelles. The assembly process is tracked and the control of morphology is successfully realized.
Collapse
Affiliation(s)
- Meijing Wang
- Shenzhen Grubbs of Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Yulin Zhu
- Shenzhen Grubbs of Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Liang Han
- Shenzhen Grubbs of Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Rui Qi
- Shenzhen Grubbs of Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Feng He
- Shenzhen Grubbs of Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| |
Collapse
|
22
|
Abstract
A variety of surfaces are patterned with precisely defined cylindrical micelles
Collapse
Affiliation(s)
- Alejandro Presa Soto
- Department of Organic and Inorganic Chemistry, School of Chemistry, University of Oviedo, 33006 Oviedo, Spain.
| |
Collapse
|
23
|
Gould OC, Box SJ, Boott CE, Ward AD, Winnik MA, Miles MJ, Manners I. Manipulation and Deposition of Complex, Functional Block Copolymer Nanostructures Using Optical Tweezers. ACS NANO 2019; 13:3858-3866. [PMID: 30794379 PMCID: PMC6482436 DOI: 10.1021/acsnano.9b00342] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 02/22/2019] [Indexed: 05/23/2023]
Abstract
Block copolymer self-assembly has enabled the creation of a range of solution-phase nanostructures with applications from optoelectronics and biomedicine to catalysis. However, to incorporate such materials into devices a method that facilitates their precise manipulation and deposition is desirable. Herein we describe how optical tweezers can be used to trap, manipulate, and pattern individual cylindrical micelles and larger hybrid micellar materials. Through the combination of TIRF imaging and optical trapping we can precisely control the three-dimensional motion of individual cylindrical block copolymer micelles in solution, enabling the creation of customizable arrays. We also demonstrate that dynamic holographic assembly enables the creation of ordered customizable arrays of complex hybrid block copolymer structures. By creating a program which automatically identifies, traps, and then deposits multiple assemblies simultaneously we have been able to dramatically speed up this normally slow process, enabling the fabrication of arrays of hybrid structures containing hundreds of assemblies in minutes rather than hours.
Collapse
Affiliation(s)
- Oliver
E. C. Gould
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Stuart J. Box
- School
of Physics, University of Bristol, Bristol BS8 1TL, United Kingdom
| | - Charlotte E. Boott
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Andrew D. Ward
- Central
Laser Facility, Rutherford Appleton Laboratories, Oxford OX11 0QX, United Kingdom
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Mervyn J. Miles
- School
of Physics, University of Bristol, Bristol BS8 1TL, United Kingdom
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
- Department
of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| |
Collapse
|
24
|
Wang K, Hohn N, Kreuzer LP, Widmann T, Haese M, Moulin JF, Müller-Buschbaum P. Morphology Tuning of ZnO/P3HT/P3HT- b-PEO Hybrid Films Deposited via Spray or Spin Coating. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10998-11005. [PMID: 30794374 DOI: 10.1021/acsami.9b00599] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hybrid films of zinc oxide (ZnO) and poly(3-hexylthiophen-2,5-diyl) (P3HT) show promising characteristics for application in hybrid bulk-heterojunction solar cells (HBSCs). However, the incompatibility of ZnO and P3HT may lead to a reduced interface area, thus reducing the probability of exciton separation and consequently lowering solar cell efficiencies. Here, a diblock copolymer P3HT- b-poly(ethylene oxide) (PEO) is introduced to improve the interface between ZnO and P3HT. ZnO is synthesized via a block copolymer assisted sol-gel approach, and the used zinc precursor is directly incorporated into the PEO blocks. Thus, the possibility of aggregation is reduced for both the inorganic and the organic components, and a good intermixing is ascertained. Two deposition methods, namely, spray and spin coating, are compared with respect to the resulting film structure, which is investigated with scanning electron microscopy and time-of-flight grazing-incidence small-angle neutron scattering measurements. Both the surface and inner morphologies reveal that the spin coated samples possess smaller and less diverse domain sizes than the sprayed films. Due to the advantage of spray coating in large-scale production, the morphology of the sprayed samples is tailored more meticulously by changing the weight fraction of ZnO in the films. The sprayed hybrid films show smaller domains and less aggregation with decreasing the amount of ZnO. This reveals that both the deposition method and composition of the ZnO/P3HT/P3HT- b-PEO hybrid films play an important role for tailoring the film morphology and thus for improving the performance of HBSCs in future application.
Collapse
Affiliation(s)
- Kun Wang
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Nuri Hohn
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Lucas P Kreuzer
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Tobias Widmann
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Martin Haese
- Helmholtz-Zentrum Geesthacht at Heinz Maier-Leibnitz Zentrum , Lichtenbergstr. 1 , 85747 Garching , Germany
| | - Jean-Francois Moulin
- Helmholtz-Zentrum Geesthacht at Heinz Maier-Leibnitz Zentrum , Lichtenbergstr. 1 , 85747 Garching , Germany
| | - Peter Müller-Buschbaum
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
- Heinz Maier-Leibnitz Zentrum (MLZ) , Technische Universität München , Lichtenbergstr. 1 , 85748 Garching , Germany
| |
Collapse
|
25
|
Xu Q, Li S, Yu C, Zhou Y. Self‐assembly of Amphiphilic Alternating Copolymers. Chemistry 2019; 25:4255-4264. [DOI: 10.1002/chem.201804067] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 11/07/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Qingsong Xu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Shanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Chunyang Yu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Yongfeng Zhou
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| |
Collapse
|
26
|
Guerin G, Molev G, Pichugin D, Rupar PA, Qi F, Cruz M, Manners I, Winnik MA. Effect of Concentration on the Dissolution of One-Dimensional Polymer Crystals: A TEM and NMR Study. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02126] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Gerald Guerin
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Gregory Molev
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Dmitry Pichugin
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Paul A. Rupar
- School of Chemistry, University of Bristol, Bristol, U.K. BS8 1TS
| | - Fei Qi
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Menandro Cruz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Ian Manners
- School of Chemistry, University of Bristol, Bristol, U.K. BS8 1TS
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| |
Collapse
|
27
|
Jia L, Guerin G, Lu Y, Yu Q, Manners I, Winnik MA. Creating Biomorphic Barbed and Branched Mesostructures in Solution through Block Copolymer Crystallization. Angew Chem Int Ed Engl 2018; 57:17205-17210. [DOI: 10.1002/anie.201809605] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/03/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Lin Jia
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Laboratory of Polymer Chemistry Department of Polymer Materials College of Materials Science and Engineering Shanghai University Nanchen Street 333 Shanghai 200444 China
| | - Gerald Guerin
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Yijie Lu
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Qing Yu
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Ian Manners
- School of Chemistry University of Bristol Bristol BS8 1TS UK
| | - Mitchell A. Winnik
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| |
Collapse
|
28
|
Jia L, Guerin G, Lu Y, Yu Q, Manners I, Winnik MA. Creating Biomorphic Barbed and Branched Mesostructures in Solution through Block Copolymer Crystallization. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lin Jia
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Laboratory of Polymer Chemistry Department of Polymer Materials College of Materials Science and Engineering Shanghai University Nanchen Street 333 Shanghai 200444 China
| | - Gerald Guerin
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Yijie Lu
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Qing Yu
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Ian Manners
- School of Chemistry University of Bristol Bristol BS8 1TS UK
| | - Mitchell A. Winnik
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| |
Collapse
|
29
|
Schöbel J, Hils C, Weckwerth A, Schlenk M, Bojer C, Stuart MCA, Breu J, Förster S, Greiner A, Karg M, Schmalz H. Strategies for the selective loading of patchy worm-like micelles with functional nanoparticles. NANOSCALE 2018; 10:18257-18268. [PMID: 30238948 DOI: 10.1039/c8nr05935g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Block copolymer self-assembly in solution paves the way for the construction of well-defined compartmentalized nanostructures. These are excellent templates for the incorporation and stabilisation of nanoparticles (NPs), giving rise to highly relevant applications in the field of catalysis or sensing. However, the regio-selective incorporation of NPs in specific compartments is still an issue, especially concerning the loading with different NP types. Using crystallisation-driven self-assembly (CDSA), functional worm-like crystalline-core micelles (wCCMs) with a tailor-made, nanometre-sized patchy corona were prepared as versatile templates for the incorporation and stabilisation of metal and metal oxide NPs. Different strategies, like ligand exchange or co-precipitation of polymer stabilised NPs with one surface patch, were developed that allow the incorporation of NPs in specific regions of the patchy wCCM corona. Independent of the NP type and the incorporation method, the NPs showed no tendency for agglomeration and were fixed within the corona patches of the wCCMs. The binary loading of patchy micelles with metal and metal oxide NPs was realised by combining different loading strategies, yielding hybrids with homogeneously dispersed NPs guided by the patchy structure of the template.
Collapse
Affiliation(s)
- Judith Schöbel
- Makromolekulare Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Tan J, Xu Q, Zhang Y, Huang C, Li X, He J, Zhang L. Room Temperature Synthesis of Self-Assembled AB/B and ABC/BC Blends by Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA) in Water. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01456] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
31
|
Cai J, Mineart KP, Li X, Spontak RJ, Manners I, Qiu H. Hierarchical Self-Assembly of Toroidal Micelles into Multidimensional Nanoporous Superstructures. ACS Macro Lett 2018; 7:1040-1045. [PMID: 35650958 DOI: 10.1021/acsmacrolett.8b00445] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Materials with controlled porosity play a prominent role in industrial and domestic applications. Although a rich array of methods has been developed to tune the pore size over a broad range (from <1 nm to >1 μm), the fabrication of functional materials with a fully open porous structure with sub-100 nm pore size has remained a significant challenge. Herein, we report the hierarchical assembly of block copolymer toroidal micelles with an intrinsic cavity into multidimensional nanoporous superstructures (pore size 85-90 nm) by modulation of interparticle interactions. The toroids aggregate into oligo-supermicelles or 2D hexagonal arrays through van der Waals interactions upon drying on a substrate, while synergistic hydrogen bonding interactions further promote the formation of 3D nanoporous superstructures directly in solution. Thus, toroidal micelles can be manipulated as a type of distinctive building block to construct nanoporous materials.
Collapse
Affiliation(s)
- Jiandong Cai
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | | | - Xiaoyu Li
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | | | - Ian Manners
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Huibin Qiu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| |
Collapse
|
32
|
Xu Q, Huang T, Li S, Li K, Li C, Liu Y, Wang Y, Yu C, Zhou Y. Emulsion‐Assisted Polymerization‐Induced Hierarchical Self‐Assembly of Giant Sea Urchin‐like Aggregates on a Large Scale. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802833] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qingsong Xu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Tong Huang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Shanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Ke Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chuanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yannan Liu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yuling Wang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chunyang Yu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yongfeng Zhou
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| |
Collapse
|
33
|
Xu Q, Huang T, Li S, Li K, Li C, Liu Y, Wang Y, Yu C, Zhou Y. Emulsion‐Assisted Polymerization‐Induced Hierarchical Self‐Assembly of Giant Sea Urchin‐like Aggregates on a Large Scale. Angew Chem Int Ed Engl 2018; 57:8043-8047. [DOI: 10.1002/anie.201802833] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/02/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Qingsong Xu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Tong Huang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Shanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Ke Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chuanlong Li
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yannan Liu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yuling Wang
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Chunyang Yu
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Yongfeng Zhou
- School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| |
Collapse
|
34
|
He J, Xu Q, Tan J, Zhang L. Ketone-Functionalized Polymer Nano-Objects Prepared via Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA) Using a Poly(diacetone acrylamide)-Based Macro-RAFT Agent. Macromol Rapid Commun 2018; 40:e1800296. [DOI: 10.1002/marc.201800296] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/23/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Jun He
- Department of Polymeric Materials and Engineering; School of Materials and Energy; Guangdong University of Technology; Guangzhou 510006 China
| | - Qin Xu
- Department of Polymeric Materials and Engineering; School of Materials and Energy; Guangdong University of Technology; Guangzhou 510006 China
| | - Jianbo Tan
- Department of Polymeric Materials and Engineering; School of Materials and Energy; Guangdong University of Technology; Guangzhou 510006 China
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter; Guangdong University of Technology; Guangzhou 510006 China
| | - Li Zhang
- Department of Polymeric Materials and Engineering; School of Materials and Energy; Guangdong University of Technology; Guangzhou 510006 China
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter; Guangdong University of Technology; Guangzhou 510006 China
| |
Collapse
|
35
|
Explosive dissolution and trapping of block copolymer seed crystallites. Nat Commun 2018; 9:1158. [PMID: 29559614 PMCID: PMC5861044 DOI: 10.1038/s41467-018-03528-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 02/20/2018] [Indexed: 01/05/2023] Open
Abstract
Enhanced control over crystallization-driven self-assembly (CDSA) of coil-crystalline block copolymers has led to the formation of intricate structures with well-defined morphology and dimensions. While approaches to build those sophisticated structures may strongly differ from each other, they all share a key cornerstone: a polymer crystallite. Here we report a trapping technique that enables tracking of the change in length of one-dimensional (1D) polymer crystallites as they are annealed in solution at different temperatures. Using the similarities between 1D polymeric micelles and bottle-brush polymers, we developed a model explaining how the dissolving crystallites reach a critical size independent of the annealing temperature, and then explode in a cooperative process involving the remaining polymer chains of the crystallites. This model also allows us to demonstrate the role of the distribution in seed core crystallinity on the dissolution of the crystallites. The study of the dissolution of polymer crystals is a challenging task. Here the authors use crystallization-driven self-assembly of coil-crystalline block copolymers as a trapping technique to track the change in length of 1D seed crystallites during annealing.
Collapse
|
36
|
Han L, Wang M, Jia X, Chen W, Qian H, He F. Uniform two-dimensional square assemblies from conjugated block copolymers driven by π-π interactions with controllable sizes. Nat Commun 2018; 9:865. [PMID: 29491384 PMCID: PMC5830438 DOI: 10.1038/s41467-018-03195-y] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/26/2018] [Indexed: 01/22/2023] Open
Abstract
Two-dimensional (2-D) micro- and nano-architectures are attractive because of their unique properties. However, the formation of 2-D supramolecular highly symmetrical structures with considerable control is still a major challenge. Here we present a simple approach for the preparation of regular and homogeneous 2-D fluorescent square non-crystallization micelles with conjugated diblock copolymers PPV12-b-P2VPn through a process of dissolving–cooling–aging. The scale of the formed micelles can be controlled by the ratio of PPV/P2VP blocks and the concentration of the solution. The results reveal that the micelles of PPV12-b-P2VPn initially form 1-D structures and then grow into 2-D structures in solution, and the growth is driven by intermolecular π–π interactions with the PPV12 blocks. The formation of 2-D square micelles is induced by herringbone arrangement of the molecules, which is closely related to the presence of the branched alkyl chains attached to conjugated PPV12 cores. Crystallization-driven processes play a vital role in preparing 2D nanostructures which makes structures with high symmetry hard to access. Here the authors present a non-crystallization approach which is based on π–π interactions of a copolymer for the fabrication of 2D symmetric structures with good dimensional control.
Collapse
Affiliation(s)
- Liang Han
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Meijing Wang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiangmeng Jia
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, China
| | - Wei Chen
- Materials Science Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, IL, 60439, USA.,Institute of Molecular Engineering, The University of Chicago, 5640 South Ellis Avenue, Chicago, IL, 60637, USA
| | - Hujun Qian
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, China
| | - Feng He
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| |
Collapse
|
37
|
Tan J, Li X, Zeng R, Liu D, Xu Q, He J, Zhang Y, Dai X, Yu L, Zeng Z, Zhang L. Expanding the Scope of Polymerization-Induced Self-Assembly: Z-RAFT-Mediated Photoinitiated Dispersion Polymerization. ACS Macro Lett 2018; 7:255-262. [PMID: 35610903 DOI: 10.1021/acsmacrolett.8b00035] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In this communication, we developed the first well-controlled Z-RAFT (RAFT = reversible addition-fragmentation chain transfer) mediated polymerization-induced self-assembly (PISA) formulation based on photoinitiated RAFT dispersion polymerization of tert-butyl acrylate (tBA) in ethanol/water (60/40, w/w) at room temperature using a Z-type macromolecular chain transfer agent (macro-CTA). Polymerizations proceeded rapidly via the exposure of visible-light irradiation (405 nm, 0.45 mW/cm2) with high monomer conversion (>95%) being achieved within 1 h. A variety of polymer nano-objects (spheres, worms, and vesicles) with narrow molar mass distributions were prepared by this Z-RAFT mediated PISA formulation. Silver nanoparticles were loaded with the vesicles via in situ reduction, which can be used as a catalyst for the reduction of methylene blue (MB) in the presence of NaBH4. Finally, gel permeation chromatography (GPC) analysis demonstrated that the corona block and the core-forming block could be cleaved by treating with excess initiator. This novel PISA formulation will greatly expand the scope of PISA and provide more mechanistic insights into the PISA research.
Collapse
Affiliation(s)
- Jianbo Tan
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China
| | - Xueliang Li
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Ruiming Zeng
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Dongdong Liu
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Qin Xu
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Jun He
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuxuan Zhang
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiaocong Dai
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Liangliang Yu
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhaohua Zeng
- School
of Materials Science and Engineering, Sun-Yat Sen University, Guangzhou 510275, China
| | - Li Zhang
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China
| |
Collapse
|
38
|
Wu CY, Chang CW, Yuan RH, Chiang YC, Chen JT, Kang DY, Chen HY. Multifunctional nanoparticles with controllable dimensions and tripled orthogonal reactivity. NANOSCALE 2017; 9:14787-14791. [PMID: 28952633 DOI: 10.1039/c7nr04771a] [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
Multifunctional nanoparticles featuring three distinct and orthogonal functionalities for performing catalyst-free click reactions of azide-alkyne and maleimide-thiol and atom transfer radical polymerization (ATRP) are fabricated using a simple chemical vapor deposition copolymerization approach with the flexibility to control the particle size and geometry.
Collapse
Affiliation(s)
- Chih-Yu Wu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | | | | | | | | | | | | |
Collapse
|
39
|
Tritschler U, Pearce S, Gwyther J, Whittell GR, Manners I. 50th Anniversary Perspective: Functional Nanoparticles from the Solution Self-Assembly of Block Copolymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02767] [Citation(s) in RCA: 238] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ulrich Tritschler
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Sam Pearce
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Jessica Gwyther
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - George R. Whittell
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Ian Manners
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| |
Collapse
|
40
|
Khozeimeh Sarbisheh E, Bhattacharjee H, Cao MPT, Zhu J, Müller J. How Strained are [1]Ferrocenophanes? Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00808] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Elaheh Khozeimeh Sarbisheh
- Department
of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Hridaynath Bhattacharjee
- Department
of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - My Phan Thuy Cao
- Department
of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Jianfeng Zhu
- Department
of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Jens Müller
- Department
of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| |
Collapse
|
41
|
Huang C, Tan J, Xu Q, He J, Li X, Liu D, Zhang L. Adding a solvophilic comonomer to the polymerization-induced self-assembly of block copolymer and homopolymer: a cooperative strategy for preparing large compound vesicles. RSC Adv 2017. [DOI: 10.1039/c7ra09120f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
We report a RAFT dispersion polymerization of styrene and 4-vinylpyridine in methanol/water at 70 °C. The polymerization was mediated by a binary mixture of DDMAT and mPEG45-DDMAT.
Collapse
Affiliation(s)
- Chundong Huang
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Jianbo Tan
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Qin Xu
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Jun He
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Xueliang Li
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Dongdong Liu
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Li Zhang
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| |
Collapse
|
42
|
Tan J, Liu D, Bai Y, Huang C, Li X, He J, Xu Q, Zhang X, Zhang L. An insight into aqueous photoinitiated polymerization-induced self-assembly (photo-PISA) for the preparation of diblock copolymer nano-objects. Polym Chem 2017. [DOI: 10.1039/c6py02135b] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Photoinitiated polymerization-induced self-assembly (photo-PISA) is utilized to investigate the sole effect of reaction temperature on PISA.
Collapse
Affiliation(s)
- Jianbo Tan
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Dongdong Liu
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Yuhao Bai
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Chundong Huang
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Xueliang Li
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Jun He
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Qin Xu
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Xuechao Zhang
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Li Zhang
- Department of Polymeric Materials and Engineering
- School of Materials and Energy
- Guangdong University of Technology
- Guangzhou 510006
- China
| |
Collapse
|
43
|
Gonzalez-Alvarez MJ, Jia L, Guerin G, Kim KS, An Du V, Walker G, Manners I, Winnik MA. How a Small Modification of the Corona-Forming Block Redirects the Self-Assembly of Crystalline–Coil Block Copolymers in Solution. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01616] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
| | - Lin Jia
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Gerald Guerin
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Kris Sanghyun Kim
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Van An Du
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
| | - Gilbert Walker
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
44
|
Li X, Gao Y, Harniman R, Winnik M, Manners I. Hierarchical Assembly of Cylindrical Block Comicelles Mediated by Spatially Confined Hydrogen-Bonding Interactions. J Am Chem Soc 2016; 138:12902-12912. [DOI: 10.1021/jacs.6b05973] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoyu Li
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Yang Gao
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Robert Harniman
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Mitchell Winnik
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| |
Collapse
|
45
|
Guerin G, Rupar P, Molev G, Manners I, Jinnai H, Winnik MA. Lateral Growth of 1D Core-Crystalline Micelles upon Annealing in Solution. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01487] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Gerald Guerin
- Department
of Chemistry, University of Toronto, 80 Saint George Street, Toronto, ON M5S
3H6, Canada
| | - Paul Rupar
- School
of Chemistry, University of Bristol, Bristol, U.K., BS8 1TS
| | - Gregory Molev
- Department
of Chemistry, University of Toronto, 80 Saint George Street, Toronto, ON M5S
3H6, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol, U.K., BS8 1TS
| | - Hiroshi Jinnai
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira,
Aoba-ku, Sendai, 980-8577, Japan
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, 80 Saint George Street, Toronto, ON M5S
3H6, Canada
| |
Collapse
|
46
|
Sakai H, Watanabe K, Kudoh F, Kamada R, Chuman Y, Sakaguchi K. Patterning nanofibrils through the templated growth of multiple modified amyloid peptides. Sci Rep 2016; 6:31993. [PMID: 27559011 PMCID: PMC4997568 DOI: 10.1038/srep31993] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 08/01/2016] [Indexed: 01/08/2023] Open
Abstract
There has been considerable interest in the patterning of functionalized nanowires because of the potential applications of these materials to the construction of nanodevices. A variety of biomolecular building blocks containing amyloid peptides have been used to functionalize nanowires. However, the patterning of self-assembled nanowires can be challenging because of the difficulties associated with controlling the self-assembly of these functionalized building blocks. Herein, we present a versatile approach for the patterning of nanowires based on the combination of templated fibril growth with a versatile functionalization method using our structure-controllable amyloid peptides (SCAPs). Using this approach, we have succeeded in the formation of multi-type nanowires with tandem domain structures in high yields. Given that the mixing-SCAP method can lead to the formation of tandem fibrils, it is noteworthy that our method allowed us to control the initiation of fibril formation from the gold nanoparticles, which were attached to a short fibril as initiation points. This approach could be used to prepare a wide variety of fibril patterns, and therefore holds great potential for the development of novel self-assembled nanodevices.
Collapse
Affiliation(s)
- Hiroki Sakai
- Department of Chemistry, Faculty of Science, Hokkaido University, N10 W8, Kita-ku, Sapporo 060-0810, Japan
| | - Ken Watanabe
- Department of Chemistry, Faculty of Science, Hokkaido University, N10 W8, Kita-ku, Sapporo 060-0810, Japan
| | - Fuki Kudoh
- Department of Chemistry, Faculty of Science, Hokkaido University, N10 W8, Kita-ku, Sapporo 060-0810, Japan
| | - Rui Kamada
- Department of Chemistry, Faculty of Science, Hokkaido University, N10 W8, Kita-ku, Sapporo 060-0810, Japan
| | - Yoshiro Chuman
- Department of Chemistry, Faculty of Science, Hokkaido University, N10 W8, Kita-ku, Sapporo 060-0810, Japan
| | - Kazuyasu Sakaguchi
- Department of Chemistry, Faculty of Science, Hokkaido University, N10 W8, Kita-ku, Sapporo 060-0810, Japan
| |
Collapse
|
47
|
Tan J, Huang C, Liu D, Zhang X, Bai Y, Zhang L. Alcoholic Photoinitiated Polymerization-Induced Self-Assembly (Photo-PISA): A Fast Route toward Poly(isobornyl acrylate)-Based Diblock Copolymer Nano-Objects. ACS Macro Lett 2016; 5:894-899. [PMID: 35607218 DOI: 10.1021/acsmacrolett.6b00439] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report a fast alcoholic photoinitiated polymerization-induced self-assembly (photo-PISA) formulation via photoinitiated RAFT dispersion polymerization of isobornyl acrylate (IBOA) in an ethanol/water mixture at 40 °C using a monomethoxy poly(ethylene glycol) (mPEG) based chain transfer agent. Polymerization proceeded rapidly via the exposure to visible light irradiation (405 nm, 0.5 mW/cm2), and high monomer conversion (>95%) was achieved within 30 min. Kinetic studies confirmed that good control was maintained during the photo-PISA process, and the polymerization can be activated or deactivated by light. Finally, we demonstrated that a diverse set of complex morphologies (spheres, worms, or vesicles) could be achieved by varying reaction parameters, and a phase diagram was constructed.
Collapse
Affiliation(s)
- Jianbo Tan
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial
Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China
| | - Chundong Huang
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Dongdong Liu
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Xuechao Zhang
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuhao Bai
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Li Zhang
- Department
of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial
Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China
| |
Collapse
|
48
|
Qiu H, Gao Y, Boott CE, Gould OEC, Harniman RL, Miles MJ, Webb SED, Winnik MA, Manners I. Uniform patchy and hollow rectangular platelet micelles from crystallizable polymer blends. Science 2016; 352:697-701. [PMID: 27151866 DOI: 10.1126/science.aad9521] [Citation(s) in RCA: 254] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 03/17/2016] [Indexed: 01/10/2023]
Abstract
The preparation of colloidally stable, self-assembled materials with tailorable solid or hollow two-dimensional (2D) structures represents a major challenge. We describe the formation of uniform, monodisperse rectangular platelet micelles of controlled size by means of seeded-growth methods that involve the addition of blends of crystalline-coil block copolymers and the corresponding crystalline homopolymer to cylindrical micelle seeds. Sequential addition of different blends yields solid platelet block comicelles with concentric rectangular patches with distinct coronal chemistries. These complex nano-objects can be subject to spatially selective processing that allows their disassembly to form perforated platelets, such as well-defined hollow rectangular rings. The solid and hollow 2D micelles provide a tunable platform for further functionalization and potential for a variety of applications.
Collapse
Affiliation(s)
- Huibin Qiu
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Yang Gao
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | | | | | | | - Mervyn J Miles
- School of Physics, University of Bristol, Bristol BS8 1TL, UK
| | - Stephen E D Webb
- Central Laser Facility, Science and Technology Facilities Council, Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
| | - Mitchell A Winnik
- Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6, Canada
| | - Ian Manners
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.
| |
Collapse
|
49
|
Zhou H, Lu Y, Zhang M, Guerin G, Manners I, Winnik MA. PFS-b-PNIPAM: A First Step toward Polymeric Nanofibrillar Hydrogels Based on Uniform Fiber-Like Micelles. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00544] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hang Zhou
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Yijie Lu
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Meng Zhang
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Gerald Guerin
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
50
|
Dey S, Sun W, Müller J. [n]Ferrocenophanes (n = 2, 3) with Nitrogen and Phosphorus in Bridging Positions. Inorg Chem 2016; 55:3630-9. [PMID: 26986956 DOI: 10.1021/acs.inorgchem.6b00170] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The in situ prepared dilithio derivative of the known species 1-bromo-1'-(trimethylsilylamino)ferrocene (1) reacted with tBuPCl2 to form the first example of a [2]ferrocenophane ([2]FCP) bridged by nitrogen and phosphorus (2). Sulfurization of 2 followed by column chromatography on silica gel gave the expected [2]FCP with a tBu(S)PN(SiMe3) bridging moiety (3a) and its desilylated counterpart with a tBu(S)PNH bridging moiety (3b). The molecular structure of 3b was determined by single-crystal X-ray analysis (α = 18.40(11)°). Using a common synthetic methodology, two new 1-amino-1'-bromoferrocene derivatives were prepared, one species with a PhCH2 (6a) and another with a tBuCH2 group (6b) on nitrogen. Dilithiation of 6a followed by addition of tBuPCl2 gave a mixture of three constitutional isomers: the targeted [2]FCP (7a), the 1,1'-disubstituted ferrocene derivative (tBuPH)(PhCH═N)fc (8a), and the [3]FCP bridged by a (NH)(CHPh)PtBu moiety (9a). NMR spectroscopy revealed that 8a is the precursor for 9a. The salt-metathesis reaction of the dilithio derivative of 6b with tBuPCl2 exclusively gave the 1,1'-disubstituted ferrocene derivative (tBuPH)(tBuCH═N)fc (8b), which does not isomerize to the respective [3]FCP. DFT calculations at the M06/6-311+G(d,p) level were used to better rationalize these unexpected results.
Collapse
Affiliation(s)
- Subhayan Dey
- Department of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan , 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Wei Sun
- Department of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan , 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Jens Müller
- Department of Chemistry and ‡Saskatchewan Structural Sciences Centre, University of Saskatchewan , 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| |
Collapse
|