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Rose KA, Marino E, O'Bryan CS, Murray CB, Lee D, Composto RJ. Nanoparticle dynamics in hydrogel networks with controlled defects. SOFT MATTER 2022; 18:9045-9056. [PMID: 36416054 DOI: 10.1039/d2sm01224c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The effect of nanoscale defects on nanoparticle dynamics in defective tetra-poly(ethylene glycol) (tetra-PEG) hydrogels is investigated using single particle tracking. In a swollen nearly homogeneous hydrogel, PEG-functionalized quantum dot (QD) probes with a similar hydrodynamic diameter (dh = 15.1 nm) to the mesh size (〈ξs〉 = 16.3 nm), are primarily immobile. As defects are introduced to the network by reaction-tuning, both the percentage of mobile QDs and the size of displacements increase as the number and size of the defects increase with hydrolysis time, although a large portion of the QDs remain immobile. To probe the effect of nanoparticle size on dynamics in defective networks, the transport of dh = 47.1 nm fluorescent polystyrene (PS) and dh = 9.6 nm PEG-functionalized QDs is investigated. The PS nanoparticles are immobile in all hydrogels, even in highly defective networks with an open structure. Conversely, the smaller QDs are more sensitive to perturbations in the network structure with an increased percentage of mobile particles and larger diffusion coefficients compared to the larger QDs and PS nanoparticles. The differences in nanoparticle mobility as a function of size suggests that particles of different sizes probe different length scales of the defects, indicating that metrics such as the confinement ratio alone cannot predict bulk dynamics in these systems. This study provides insight into designing hydrogels with controlled transport properties, with particular importance for degradable hydrogels for drug delivery applications.
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Affiliation(s)
- Katie A Rose
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
| | - Emanuele Marino
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Palermo, 90123, Italy
| | - Christopher S O'Bryan
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, 65211, USA
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
| | - Russell J Composto
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
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Nakagawa S, Yoshie N. Star polymer networks: a toolbox for cross-linked polymers with controlled structure. Polym Chem 2022. [DOI: 10.1039/d1py01547h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of precisely controlled polymer networks has been a long-cherished dream of polymer scientists. Traditional random cross-linking strategies often lead to uncontrolled networks with various kinds of defects. Recent...
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Watanabe N, Li X, Shibayama M. Probe Diffusion during Sol–Gel Transition of a Radical Polymerization System Using Isorefractive Dynamic Light Scattering. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nobuyuki Watanabe
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Xiang Li
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Mitsuhiro Shibayama
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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Li X, Watanabe N, Sakai T, Shibayama M. Probe Diffusion of Sol–Gel Transition in an Isorefractive Polymer Solution. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02573] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiang Li
- Institute
for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Nobuyuki Watanabe
- Institute
for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Takamasa Sakai
- Department
of Bioengineering, The University of Tokyo, Yayoi, Tokyo, Japan
| | - Mitsuhiro Shibayama
- Institute
for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, Japan
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Khairulina K, Chung UI, Sakai T. New design of hydrogels with tuned electro-osmosis: a potential model system to understand electro-kinetic transport in biological tissues. J Mater Chem B 2017; 5:4526-4534. [DOI: 10.1039/c7tb00064b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of charged polymer gels with precisely controlled magnitude and direction of electro-osmotic flow was prepared and opens up the possibility for understanding the contribution of electro-osmosis to transport phenomenon in native biological tissues.
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Affiliation(s)
- Kateryna Khairulina
- Department of Bioengineering
- School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Ung-il Chung
- Department of Bioengineering
- School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Takamasa Sakai
- Department of Bioengineering
- School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
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