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Kemal E, Peters R, Bourke S, Fairclough S, Bergstrom-Mann P, Owen DM, Sandiford L, Dailey LA, Green M. Magnetic conjugated polymer nanoparticles doped with a europium complex for biomedical imaging. Photochem Photobiol Sci 2018; 17:718-721. [DOI: 10.1039/c7pp00402h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Self-assembling conjugated polymer nanoparticles containing PVK and PLGA-PEG as a matrix polymer were doped with both a luminescent rare-earth complex and magnetic nanoparticles (SPIONs), giving rise to materials that are both luminescent and magnetic.
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Affiliation(s)
- E. Kemal
- Department of Physics
- King's College London
- Strand
- London
- UK
| | - R. Peters
- Department of Physics
- King's College London
- Strand
- London
- UK
| | - S. Bourke
- Department of Physics
- King's College London
- Strand
- London
- UK
| | - S. Fairclough
- Department of Physics
- King's College London
- Strand
- London
- UK
| | | | - D. M. Owen
- Department of Physics
- King's College London
- Strand
- London
- UK
| | - L. Sandiford
- Department of Physics
- King's College London
- Strand
- London
- UK
| | - L. A. Dailey
- Department of Pharmacy
- Martin-Luther-Universität Halle-Wittenberg
- 06120 Halle (Saale)
- Germany
| | - M. Green
- Department of Physics
- King's College London
- Strand
- London
- UK
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Abelha TF, Phillips TW, Bannock JH, Nightingale AM, Dreiss CA, Kemal E, Urbano L, deMello JC, Green M, Dailey LA. Bright conjugated polymer nanoparticles containing a biodegradable shell produced at high yields and with tuneable optical properties by a scalable microfluidic device. Nanoscale 2017; 9:2009-2019. [PMID: 28106200 DOI: 10.1039/c6nr09162h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study compares the performance of a microfluidic technique and a conventional bulk method to manufacture conjugated polymer nanoparticles (CPNs) embedded within a biodegradable poly(ethylene glycol) methyl ether-block-poly(lactide-co-glycolide) (PEG5K-PLGA55K) matrix. The influence of PEG5K-PLGA55K and conjugated polymers cyano-substituted poly(p-phenylene vinylene) (CN-PPV) and poly(9,9-dioctylfluorene-2,1,3-benzothiadiazole) (F8BT) on the physicochemical properties of the CPNs was also evaluated. Both techniques enabled CPN production with high end product yields (∼70-95%). However, while the bulk technique (solvent displacement) under optimal conditions generated small nanoparticles (∼70-100 nm) with similar optical properties (quantum yields ∼35%), the microfluidic approach produced larger CPNs (140-260 nm) with significantly superior quantum yields (49-55%) and tailored emission spectra. CPNs containing CN-PPV showed smaller size distributions and tuneable emission spectra compared to F8BT systems prepared under the same conditions. The presence of PEG5K-PLGA55K did not affect the size or optical properties of the CPNs and provided a neutral net electric charge as is often required for biomedical applications. The microfluidics flow-based device was successfully used for the continuous preparation of CPNs over a 24 hour period. On the basis of the results presented here, it can be concluded that the microfluidic device used in this study can be used to optimize the production of bright CPNs with tailored properties with good reproducibility.
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Affiliation(s)
- T F Abelha
- King's College London, Institute of Pharmaceutical Science, Waterloo Campus, SE1 9NH, London, UK
| | - T W Phillips
- Imperial College London, Department of Chemistry, South Kensington Campus, SW7 2AZ, London, UK
| | - J H Bannock
- Imperial College London, Department of Chemistry, South Kensington Campus, SW7 2AZ, London, UK
| | - A M Nightingale
- Faculty of Engineering and the Environment, University of Southampton, Southampton, UK
| | - C A Dreiss
- King's College London, Institute of Pharmaceutical Science, Waterloo Campus, SE1 9NH, London, UK
| | - E Kemal
- King's College London, Department of Physics, Strand Campus, WC2R 2LS, London, UK.
| | - L Urbano
- King's College London, Institute of Pharmaceutical Science, Waterloo Campus, SE1 9NH, London, UK
| | - J C deMello
- Imperial College London, Department of Chemistry, South Kensington Campus, SW7 2AZ, London, UK
| | - M Green
- King's College London, Department of Physics, Strand Campus, WC2R 2LS, London, UK.
| | - L A Dailey
- Institut für Pharmazeutische Technologie und Biopharmazie, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany.
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Peters R, Sandiford L, Owen DM, Kemal E, Bourke S, Dailey LA, Green M. Red-emitting protein-coated conjugated polymer nanoparticles. Photochem Photobiol Sci 2016; 15:1448-1452. [DOI: 10.1039/c6pp00160b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Red emitting materials are desirable in biology due to the transparency of certain biological tissues at these wavelengths.
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Affiliation(s)
- R. Peters
- Department of Physics
- King's College London
- Strand
- London WC2R 2LS
- UK
| | - L. Sandiford
- Department of Physics
- King's College London
- Strand
- London WC2R 2LS
- UK
| | - D. M. Owen
- Department of Physics
- King's College London
- Strand
- London WC2R 2LS
- UK
| | - E. Kemal
- Department of Physics
- King's College London
- Strand
- London WC2R 2LS
- UK
| | - S. Bourke
- Department of Physics
- King's College London
- Strand
- London WC2R 2LS
- UK
| | - L. A. Dailey
- Institute of Pharmaceutical Science
- King's College London
- London SE1 9NH
- UK
| | - M. Green
- Department of Physics
- King's College London
- Strand
- London WC2R 2LS
- UK
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