Optical Properties of Mn-Doped CuGa(In)S-ZnS Nanocrystals (NCs): Effects of Host NC and Mn Concentration.
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| Title: | Optical Properties of Mn-Doped CuGa(In)S-ZnS Nanocrystals (NCs): Effects of Host NC and Mn Concentration. |
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| Authors: | Lee, Bryan1,2 (AUTHOR) bryanlee@nevada.unr.edu, Hegseth, Tristan1 (AUTHOR) tristanhegseth@nevada.unr.edu, Zhu, Xiaoshan1,2 (AUTHOR) xzhu@unr.edu |
| Source: | Nanomaterials (2079-4991). Mar2022, Vol. 12 Issue 6, p994. 16p. |
| Subjects: | Optical properties, Bio-imaging sensors, Nanocrystals, Visible spectra, Absorption spectra, Fluorescence, Optics |
| Abstract: | Time-gated fluorescence measurement (TGFM) using long-life fluorescence probes is a highly sensitive fluorescence-measurement technology due to the inherently high signal-to-background ratio. Although many probes for TGFM such as luminescent-metal-complex probes and lanthanide-doped nanoparticles are in development, they generally need sophisticated/expensive instruments for biosensing/imaging applications. Probes possessing high brightness, low-energy (visible light) excitation, and long lifetimes up to milliseconds of luminescence, are highly desired in order to simplify the optical and electronic design of time-gated instruments (e.g., adopting non-UV-grade optics or low-speed electronics), lower the instrument complexity and cost, and facilitate broader applications of TGFM. In this work, we developed Mn-doped CuGa(In)S-ZnS nanocrystals (NCs) using simple and standard synthetic steps to achieve all the desired optical features in order to investigate how the optical properties (fluorescence/absorption spectra, brightness, and lifetimes) of the Mn-doped NCs are affected by different host NCs and Mn concentrations in host NCs. With optimal synthetic conditions, a library of Mn-doped NCs was achieved that possessed high brightness (up to 47% quantum yield), low-energy excitation (by 405 nm visible light), and long lifetimes (up to 3.67 ms). Additionally, the time-domain fluorescence characteristics of optimal Mn-doped NCs were measured under pulsed 405 nm laser excitation and bandpass-filter-based emission collection. The measurement results indicate the feasibility of these optimal Mn-doped NCs in TGFM-based biosensing/imaging. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Optical Properties of Mn-Doped CuGa(In)S-ZnS Nanocrystals (NCs): Effects of Host NC and Mn Concentration. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lee%2C+Bryan%22">Lee, Bryan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> bryanlee@nevada.unr.edu</i><br /><searchLink fieldCode="AR" term="%22Hegseth%2C+Tristan%22">Hegseth, Tristan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tristanhegseth@nevada.unr.edu</i><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Xiaoshan%22">Zhu, Xiaoshan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> xzhu@unr.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Mar2022, Vol. 12 Issue 6, p994. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Optical+properties%22">Optical properties</searchLink><br /><searchLink fieldCode="DE" term="%22Bio-imaging+sensors%22">Bio-imaging sensors</searchLink><br /><searchLink fieldCode="DE" term="%22Nanocrystals%22">Nanocrystals</searchLink><br /><searchLink fieldCode="DE" term="%22Visible+spectra%22">Visible spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption+spectra%22">Absorption spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorescence%22">Fluorescence</searchLink><br /><searchLink fieldCode="DE" term="%22Optics%22">Optics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Time-gated fluorescence measurement (TGFM) using long-life fluorescence probes is a highly sensitive fluorescence-measurement technology due to the inherently high signal-to-background ratio. Although many probes for TGFM such as luminescent-metal-complex probes and lanthanide-doped nanoparticles are in development, they generally need sophisticated/expensive instruments for biosensing/imaging applications. Probes possessing high brightness, low-energy (visible light) excitation, and long lifetimes up to milliseconds of luminescence, are highly desired in order to simplify the optical and electronic design of time-gated instruments (e.g., adopting non-UV-grade optics or low-speed electronics), lower the instrument complexity and cost, and facilitate broader applications of TGFM. In this work, we developed Mn-doped CuGa(In)S-ZnS nanocrystals (NCs) using simple and standard synthetic steps to achieve all the desired optical features in order to investigate how the optical properties (fluorescence/absorption spectra, brightness, and lifetimes) of the Mn-doped NCs are affected by different host NCs and Mn concentrations in host NCs. With optimal synthetic conditions, a library of Mn-doped NCs was achieved that possessed high brightness (up to 47% quantum yield), low-energy excitation (by 405 nm visible light), and long lifetimes (up to 3.67 ms). Additionally, the time-domain fluorescence characteristics of optimal Mn-doped NCs were measured under pulsed 405 nm laser excitation and bandpass-filter-based emission collection. The measurement results indicate the feasibility of these optimal Mn-doped NCs in TGFM-based biosensing/imaging. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano12060994 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 994 Subjects: – SubjectFull: Optical properties Type: general – SubjectFull: Bio-imaging sensors Type: general – SubjectFull: Nanocrystals Type: general – SubjectFull: Visible spectra Type: general – SubjectFull: Absorption spectra Type: general – SubjectFull: Fluorescence Type: general – SubjectFull: Optics Type: general Titles: – TitleFull: Optical Properties of Mn-Doped CuGa(In)S-ZnS Nanocrystals (NCs): Effects of Host NC and Mn Concentration. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lee, Bryan – PersonEntity: Name: NameFull: Hegseth, Tristan – PersonEntity: Name: NameFull: Zhu, Xiaoshan IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 03 Text: Mar2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 12 – Type: issue Value: 6 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
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