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MacKenzie HK, Zhang Y, Zheng W, Shaikh H, MacFarlane LR, Musgrave RA, Manners I. Functional Noncentrosymmetric Nanoparticle-Nanofiber Hybrids via Selective Fragmentation. J Am Chem Soc 2024; 146:18504-18512. [PMID: 38946087 DOI: 10.1021/jacs.4c04234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Noncentrosymmetric nanostructures are an attractive synthetic target as they can exhibit complex interparticle interactions useful for numerous applications. However, generating uniform, colloidally stable, noncentrosymmetric nanoparticles with low aspect ratios is a significant challenge using solution self-assembly approaches. Herein, we outline the synthesis of noncentrosymmetric multiblock co-nanofibers by subsequent living crystallization-driven self-assembly of block co-polymers, spatially confined attachment of nanoparticles, and localized nanofiber fragmentation. Using this strategy, we have fabricated uniform diblock and triblock noncentrosymmetric π-conjugated nanofiber-nanoparticle hybrid structures. Additionally, in contrast to Brownian motion typical of centrosymmetric nanoparticles, we demonstrated that these noncentrosymmetric nanofibers undergo ballistic motion in the presence of H2O2 and thus could be employed as nanomotors in various applications, including drug delivery and environmental remediation.
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Affiliation(s)
- Harvey K MacKenzie
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Yifan Zhang
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, P. R. China
| | - Weijia Zheng
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
| | - Huda Shaikh
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
| | - Liam R MacFarlane
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
| | - Rebecca A Musgrave
- Department of Chemistry, King's College London, 7 Trinity Street, London SE1 1DB, United Kingdom
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
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Li Z, Guo H, Jin X. Fabrication of Uniform Anionic Polymeric Nanoplatelets as Building Blocks for Constructing Conductive Hydrogels with Enhancing Conductive and Mechanical Properties. Macromol Rapid Commun 2024; 45:e2400008. [PMID: 38659335 DOI: 10.1002/marc.202400008] [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: 01/05/2024] [Revised: 04/17/2024] [Indexed: 04/26/2024]
Abstract
Conductive hydrogels play a crucial role in advancing technologies like implantable bioelectronics and wearable electronic devices, owing to their favorable conductivity and appropriate mechanical properties. Here, a novel bottom-up approach is reported for crafting conductive nanocomposite hydrogels to achieve enhancing conductive and mechanical properties. In this approach, new poly(ɛ-caprolactone)-based block copolymers with sulfonic groups are first synthesized and self-assembled into uniform polyanionic nanoplatelets. Subsequently, these negatively charged nanoplatelets, with sulfonic groups on the surface, are employed as nanoadditives for the polymerization of 3,4-ethylenedioxythiophene (EDOT), resulting in poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/nanoplatelet complex with 3.8 times enhanced electrical conductivity compared with their counterparts prepared using block copolymers (BCPs). Blending the (PEDOT:PSS)/nanoplatelet complex with calcium alginate, nanocomposite hydrogels are successfully prepared. In comparison with hydrogels with (PEDOT:PSS)/BCP complexes prepared by a top-down method, the nanocomposite hydrogels are found to show twice as strong mechanical strength and 1.6 times higher conductivity. This work provides valuable insights into the bottom-up construction of conductive hydrogels for bioelectronics using well-controlled polymeric nanoplatelets.
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Affiliation(s)
- Zehua Li
- School of Chemistry, Beijing Institute of Technology, Beijing, 102488, China
| | - Hui Guo
- School of Chemistry, Beijing Institute of Technology, Beijing, 102488, China
| | - Xuhui Jin
- School of Chemistry, Beijing Institute of Technology, Beijing, 102488, China
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Leitao E, MacKenzie H. Ian Manners (1961-2023): Learning to Fly. Angew Chem Int Ed Engl 2024; 63:e202408692. [PMID: 38818737 DOI: 10.1002/anie.202408692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Ian Manners, an internationally renowned main-group and materials scientist, passed away on December 3, 2023. He will be remembered as a brilliant researcher, an avid birdwatching enthusiast, Pink Floyd fan, and champion of his students who had a profoundly positive impact on those around him.
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Affiliation(s)
- Erin Leitao
- School of Chemical Sciences, The University of Auckland, Auckland, 1010, New Zealand
| | - Harvey MacKenzie
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC, V8P 5C2, Canada
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Jin B, Hu L, Li X. Mesogenic Ordering-Driven Self-Assembly of Liquid Crystalline Block Copolymers in Solution. Chemistry 2024; 30:e202400312. [PMID: 38454618 DOI: 10.1002/chem.202400312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/09/2024]
Abstract
With the development of nanotechnology, the preparation of polymeric nanoparticles with nicely defined structures has been well-developed, and the functionalization and subsequent applications of the resultant nanostructures are becoming increasingly important. Particularly, by introducing mesogenic ordering as the driving force for the solution-state self-assembly of liquid crystalline (LC) block copolymers (BCPs), micellar nanostructures with different morphologies, especially anisotropic morphologies, can be easily prepared. This review summarizes the recent progress in the solution-state self-assembly of LC BCPs and is mostly focused on four main related aspects, including an in-depth understanding of the mesogenic ordering-driven self-assembly, precise assembly methods, utilization of these methods to fabricate hierarchical structures, and the potential applications of these well-defined nanostructures. We hope not only to make a systematic summary of previous studies but also to provide some useful thinking for the future development of this field.
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Affiliation(s)
- Bixin Jin
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Lingjuan Hu
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xiaoyu Li
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Key Laboratory of High Energy Density Materials, MOE. Beijing, Beijing Institute of Technology, Beijing, 100081, P. R. China
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Sakamoto Y, Fujii S, Takano S, Fukushima J, Ando M, Kodera N, Nishimura T. Manipulation of Macrophage Uptake by Controlling the Aspect Ratio of Graft Copolymer Micelles. NANO LETTERS 2024; 24:5838-5846. [PMID: 38661003 DOI: 10.1021/acs.nanolett.4c01054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Nanostructures of drug carriers play a crucial role in nanomedicine due to their ability to influence drug delivery. There is yet no clear consensus regarding the optimal size and shape (e.g., aspect ratio) of nanoparticles for minimizing macrophage uptake, given the difficulties in controlling the shape and size of nanoparticles while maintaining identical surface properties. Here, we employed graft copolymer self-assembly to prepare polymer micelles with aspect ratios ranging from 1.0 (spherical) to 10.8 (cylindrical) and closely matched interfacial properties. Notably, our findings emphasize that cylindrical micelles with an aspect ratio of 2.4 are the least susceptible to macrophage uptake compared with both their longer counterparts and spherical micelles. This reduced uptake of the short cylindrical micelles results in a 3.3-fold increase in blood circulation time compared with their spherical counterparts. Controlling the aspect ratio of nanoparticles is crucial for improving drug delivery efficacy through better nanoparticle design.
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Affiliation(s)
- Yusuke Sakamoto
- Department of Chemistry and Materials Science, Shinshu University, 3-15-1, Tokida, Ueda, Nagano 386-8567, Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Shin Takano
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Jokichi Fukushima
- Department of Chemistry and Materials Science, Shinshu University, 3-15-1, Tokida, Ueda, Nagano 386-8567, Japan
| | - Mitsuru Ando
- Department of Regeneration Science and Engineering, Institute for Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Noriyuki Kodera
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Ishikawa 920-1192, Japan
| | - Tomoki Nishimura
- Department of Chemistry and Materials Science, Shinshu University, 3-15-1, Tokida, Ueda, Nagano 386-8567, Japan
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Parkin HC, Street STG, Gowen B, Da-Silva-Correa LH, Hof R, Buckley HL, Manners I. Mechanism of Action and Design of Potent Antibacterial Block Copolymer Nanoparticles. J Am Chem Soc 2024; 146:5128-5141. [PMID: 38356186 DOI: 10.1021/jacs.3c09033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Self-assembled polymer nanoparticles are promising antibacterials, with nonspherical morphologies of particular interest as recent work has demonstrated enhanced antibacterial activity relative to their spherical counterparts. However, the reasons for this enhancement are currently unclear. We have performed a multifaceted analysis of the antibacterial mechanism of action of 1D nanofibers relative to nanospheres by the use of flow cytometry, high-resolution microscopy, and evaluations of the antibacterial activity of pristine and tetracycline-loaded nanoparticles. Low-length dispersity, fluorescent diblock copolymer nanofibers with a crystalline poly(fluorenetrimethylenecarbonate) (PFTMC) core (length = 104 and 472 nm, height = 7 nm, width = 10-13 nm) and a partially protonated poly(dimethylaminoethyl methacrylate) (PDMAEMA) corona (length = 12 nm) were prepared via seeded growth living crystallization-driven self-assembly. Their behavior was compared to that of analogous nanospheres containing an amorphous PFTMC core (diameter of 12 nm). While all nanoparticles were uptaken into Escherichia coli W3110, crystalline-core nanofibers were observed to cause significant bacterial damage. Drug loading studies indicated that while all nanoparticle antibacterial activity was enhanced in combination with tetracycline, the enhancement was especially prominent when small nanoparticles (ca. 15-25 nm) were employed. Therefore, the identified differences in the mechanism of action and the demonstrated consequences for nanoparticle size and morphology control may be exploited for the future design of potent antibacterial agents for overcoming antibacterial resistance. This study also reinforces the requirement of morphological control over polymer nanoparticles for biomedical applications, as differences in activity are observed depending on their size, shape, and core-crystallinity.
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Affiliation(s)
- Hayley C Parkin
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
| | - Steven T G Street
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
| | - Brent Gowen
- Department of Biology, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Luiz H Da-Silva-Correa
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
- Department of Civil Engineering, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Rebecca Hof
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
| | - Heather L Buckley
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
- Department of Civil Engineering, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
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Finnegan JR, FitzGerald LI, Chen MZ, Warne NM, Yuen D, Davis TP, Johnston APR, Kempe K. Length-Dependent Cellular Internalization of Nanobody-Functionalized Poly(2-oxazoline) Nanorods. NANO LETTERS 2024; 24:89-96. [PMID: 37939013 DOI: 10.1021/acs.nanolett.3c03342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
The ability to target specific tissues and to be internalized by cells is critical for successful nanoparticle-based targeted drug delivery. Here, we combined "stealthy" rod-shaped poly(2-oxazoline) (POx) nanoparticles of different lengths with a cancer marker targeting nanobody and a fluorescent cell internalization sensor via a heat-induced living crystallization-driven self-assembly (CDSA) strategy. A significant increase in association and uptake driven by nanobody-receptor interactions was observed alongside nanorod-length-dependent kinetics. Importantly, the incorporation of the internalization sensor allowed for quantitative differentiation between cell surface association and internalization of the targeted nanorods, revealing unprecedented length-dependent cellular interactions of CDSA nanorods. This study highlights the modularity and versatility of the heat-induced CDSA process and further demonstrates the potential of POx nanorods as a modular nanomedicine platform.
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Affiliation(s)
- John R Finnegan
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Laura I FitzGerald
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Moore Zhe Chen
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Nicole M Warne
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Daniel Yuen
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Thomas P Davis
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Angus P R Johnston
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Kristian Kempe
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
- Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
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