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Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water
Development of stable blue-emitting materials has always been a challenging task because of the necessity of high crystal quality and good optical properties. We have developed a highly efficient blue-emitter, based on environmentally friendly indium phosphide/zinc sulphide quantum dots (InP/ZnS QDs...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10189856/ https://www.ncbi.nlm.nih.gov/pubmed/37206393 http://dx.doi.org/10.1039/d3sc00164d |
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author | Roy, Pradyut Virmani, Mishika Pillai, Pramod P. |
author_facet | Roy, Pradyut Virmani, Mishika Pillai, Pramod P. |
author_sort | Roy, Pradyut |
collection | PubMed |
description | Development of stable blue-emitting materials has always been a challenging task because of the necessity of high crystal quality and good optical properties. We have developed a highly efficient blue-emitter, based on environmentally friendly indium phosphide/zinc sulphide quantum dots (InP/ZnS QDs) in water, by controlling the growth kinetics of the core as well as the shell. A rational combination of less-reactive metal-halides, phosphorus, and sulphur precursors is the key for achieving the uniform growth of the InP core and ZnS shell. The InP/ZnS QDs showed long-term stable photoluminescence (PL) in the pure-blue region (∼462 nm), with an absolute PL quantum yield of ∼50% and a colour purity of ∼80% in water. Cytotoxicity studies revealed that the cells can withstand up to ∼2 micromolar concentration of pure-blue emitting InP/ZnS QDs (∼120 μg mL(−1)). Multicolour imaging studies show that the PL of InP/ZnS QDs was well-retained inside the cells as well, without interfering with the fluorescence signal of commercially available biomarkers. Moreover, the ability of InP based pure-blue emitters to participate in an efficient Förster resonance energy transfer (FRET) process is demonstrated. Installing a favorable electrostatic interaction turned out to be crucial in achieving an efficient FRET process (E ∼75%) from blue-emitting InP/ZnS QDs to rhodamine B dye (Rh B) in water. The quenching dynamics fits well with the Perrin formalism and the distance-dependent quenching (DDQ) model, which confirms an electrostatically driven multi-layer assembly of Rh B acceptor molecules around the InP/ZnS QD donor. Furthermore, the process of FRET was successfully translated into the solid state, proving their suitability for device-level studies as well. In short, our study expands the spectrum of aqueous QDs based on InP towards the blue region for future biological and light harvesting studies. |
format | Online Article Text |
id | pubmed-10189856 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-101898562023-05-18 Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water Roy, Pradyut Virmani, Mishika Pillai, Pramod P. Chem Sci Chemistry Development of stable blue-emitting materials has always been a challenging task because of the necessity of high crystal quality and good optical properties. We have developed a highly efficient blue-emitter, based on environmentally friendly indium phosphide/zinc sulphide quantum dots (InP/ZnS QDs) in water, by controlling the growth kinetics of the core as well as the shell. A rational combination of less-reactive metal-halides, phosphorus, and sulphur precursors is the key for achieving the uniform growth of the InP core and ZnS shell. The InP/ZnS QDs showed long-term stable photoluminescence (PL) in the pure-blue region (∼462 nm), with an absolute PL quantum yield of ∼50% and a colour purity of ∼80% in water. Cytotoxicity studies revealed that the cells can withstand up to ∼2 micromolar concentration of pure-blue emitting InP/ZnS QDs (∼120 μg mL(−1)). Multicolour imaging studies show that the PL of InP/ZnS QDs was well-retained inside the cells as well, without interfering with the fluorescence signal of commercially available biomarkers. Moreover, the ability of InP based pure-blue emitters to participate in an efficient Förster resonance energy transfer (FRET) process is demonstrated. Installing a favorable electrostatic interaction turned out to be crucial in achieving an efficient FRET process (E ∼75%) from blue-emitting InP/ZnS QDs to rhodamine B dye (Rh B) in water. The quenching dynamics fits well with the Perrin formalism and the distance-dependent quenching (DDQ) model, which confirms an electrostatically driven multi-layer assembly of Rh B acceptor molecules around the InP/ZnS QD donor. Furthermore, the process of FRET was successfully translated into the solid state, proving their suitability for device-level studies as well. In short, our study expands the spectrum of aqueous QDs based on InP towards the blue region for future biological and light harvesting studies. The Royal Society of Chemistry 2023-04-20 /pmc/articles/PMC10189856/ /pubmed/37206393 http://dx.doi.org/10.1039/d3sc00164d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Roy, Pradyut Virmani, Mishika Pillai, Pramod P. Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water |
title | Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water |
title_full | Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water |
title_fullStr | Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water |
title_full_unstemmed | Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water |
title_short | Blue-emitting InP quantum dots participate in an efficient resonance energy transfer process in water |
title_sort | blue-emitting inp quantum dots participate in an efficient resonance energy transfer process in water |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10189856/ https://www.ncbi.nlm.nih.gov/pubmed/37206393 http://dx.doi.org/10.1039/d3sc00164d |
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