Colloids and Surfaces B: Biointerfaces, volume 181, pages 119-124
Towards biocompatible NIR-II nanoprobes – transfer of hydrophobic Ag2S quantum dots to aqueous solutions using phase transfer catalysed hydrolysis of poly(maleic anhydride-alt-1-octadecene)
2
Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. R. Weigla 12, 53-114, Wroclaw, Poland.
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Publication type: Journal Article
Publication date: 2019-09-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 5.8
ISSN: 09277765, 18734367
Physical and Theoretical Chemistry
General Medicine
Colloid and Surface Chemistry
Biotechnology
Surfaces and Interfaces
Abstract
• Highly stable, water soluble Ag 2 S QDs were prepared using amphiphilic polymer (PMAO). • PLQY after modification dropped only by 40% and was stable for at least 12 months. • Hydrodynamic diameter of water soluble Ag 2 S QDs was about 10 nm. • Cytotoxicity of Ag 2 S QDs water solutions was determined. Development of protocols for transferring of hydrophobic quantum dots (QDs) into aqueous solution is of special importance for their biomedical applications. Particularly, hydrophilization of Ag 2 S without quenching of photoluminescence is a great challenge. Application of standard protocol for amphiphilic polymer coating of hydrophobic Ag 2 S nanocrystals failed, whereas ligand exchange and direct synthesis of Ag 2 S in aqueous solution leads to poorly emitting materials. In this paper we present the facile method for transferring of hydrophobic Ag 2 S QDs into aqueous solution employing the phase transfer catalysed hydrolysis of a commercially available polymer - poly(maleic anhydride- alt -1-octadecene), (PMAO) in the presence of tetramethylammonium hydroxide. Because the original surface ligands are retained and we do not use solvents (like THF) detrimental for Ag 2 S emission, the modification does not deteriorate photoluminescence properties and quantum yield of modified QDs in aqueous solution reaches 60% of that for hydrophobic QDs in chloroform. The hydrodynamic diameter of modified, water soluble Ag 2 S QDs is about 10 nm and is only slightly larger than their original size. Moreover, the polymer coated nanocrystals are not aggregated and are stable for months. Surface characterization of QDs by NMR and IR spectroscopy indicates that polymer chains intercalate alkyl chains of dodecanethiol (DDT) bound to the surface of Ag 2 S. The cytotoxicity studies indicate that the presented method should be regarded as a notable progress towards the biocompatible Ag 2 S NIR-II emitting nanoprobes.
Top-30
Citations by journals
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1 publication, 6.67%
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Citations by publishers
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5
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Elsevier
5 publications, 33.33%
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Wiley
3 publications, 20%
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Royal Society of Chemistry (RSC)
2 publications, 13.33%
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IOP Publishing
1 publication, 6.67%
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Springer Nature
1 publication, 6.67%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 6.67%
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- We do not take into account publications without a DOI.
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- Statistics recalculated weekly.
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Rotko G. et al. Towards biocompatible NIR-II nanoprobes – transfer of hydrophobic Ag2S quantum dots to aqueous solutions using phase transfer catalysed hydrolysis of poly(maleic anhydride-alt-1-octadecene) // Colloids and Surfaces B: Biointerfaces. 2019. Vol. 181. pp. 119-124.
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Rotko G., Cichos J., Wysokińska E., Karbowiak M., Kalas W. Towards biocompatible NIR-II nanoprobes – transfer of hydrophobic Ag2S quantum dots to aqueous solutions using phase transfer catalysed hydrolysis of poly(maleic anhydride-alt-1-octadecene) // Colloids and Surfaces B: Biointerfaces. 2019. Vol. 181. pp. 119-124.
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TY - JOUR
DO - 10.1016/j.colsurfb.2019.04.068
UR - https://doi.org/10.1016/j.colsurfb.2019.04.068
TI - Towards biocompatible NIR-II nanoprobes – transfer of hydrophobic Ag2S quantum dots to aqueous solutions using phase transfer catalysed hydrolysis of poly(maleic anhydride-alt-1-octadecene)
T2 - Colloids and Surfaces B: Biointerfaces
AU - Rotko, Grzegorz
AU - Cichos, J.
AU - Wysokińska, Edyta
AU - Karbowiak, M.
AU - Kalas, Wojciech
PY - 2019
DA - 2019/09/01 00:00:00
PB - Elsevier
SP - 119-124
VL - 181
SN - 0927-7765
SN - 1873-4367
ER -
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@article{2019_Rotko,
author = {Grzegorz Rotko and J. Cichos and Edyta Wysokińska and M. Karbowiak and Wojciech Kalas},
title = {Towards biocompatible NIR-II nanoprobes – transfer of hydrophobic Ag2S quantum dots to aqueous solutions using phase transfer catalysed hydrolysis of poly(maleic anhydride-alt-1-octadecene)},
journal = {Colloids and Surfaces B: Biointerfaces},
year = {2019},
volume = {181},
publisher = {Elsevier},
month = {sep},
url = {https://doi.org/10.1016/j.colsurfb.2019.04.068},
pages = {119--124},
doi = {10.1016/j.colsurfb.2019.04.068}
}