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Khalid A, Norello R, N Abraham A, Tetienne JP, J Karle T, W C Lui E, Xia K, A Tran P, J O'Connor A, G Mann B, de Boer R, He Y, Man Ching Ng A, B Djurisic A, Shukla R, Tomljenovic-Hanic S. Biocompatible and Biodegradable Magnesium Oxide Nanoparticles with In Vitro Photostable Near-Infrared Emission: Short-Term Fluorescent Markers. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1360. [PMID: 31547487 PMCID: PMC6835516 DOI: 10.3390/nano9101360] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/13/2019] [Accepted: 09/17/2019] [Indexed: 12/15/2022]
Abstract
Imaging of biological matter by using fluorescent nanoparticles (NPs) is becoming a widespread method for in vitro imaging. However, currently there is no fluorescent NP that satisfies all necessary criteria for short-term in vivo imaging: biocompatibility, biodegradability, photostability, suitable wavelengths of absorbance and fluorescence that differ from tissue auto-fluorescence, and near infrared (NIR) emission. In this paper, we report on the photoluminescent properties of magnesium oxide (MgO) NPs that meet all these criteria. The optical defects, attributed to vanadium and chromium ion substitutional defects, emitting in the NIR, are observed at room temperature in NPs of commercial and in-house ball-milled MgO nanoparticles, respectively. As such, the NPs have been successfully integrated into cultured cells and photostable bright in vitro emission from NPs was recorded and analyzed. We expect that numerous biotechnological and medical applications will emerge as this nanomaterial satisfies all criteria for short-term in vivo imaging.
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Affiliation(s)
- Asma Khalid
- School of Physics, University of Melbourne, Parkville, VIC 3010, Australia.
- School of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia.
| | - Romina Norello
- School of Physics, University of Melbourne, Parkville, VIC 3010, Australia.
| | - Amanda N Abraham
- School of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia.
| | | | - Timothy J Karle
- School of Physics, University of Melbourne, Parkville, VIC 3010, Australia.
| | - Edward W C Lui
- Department of Mechanical Engineering, University of Melbourne, Parkville, VIC 3010, Australia.
| | - Kenong Xia
- Department of Mechanical Engineering, University of Melbourne, Parkville, VIC 3010, Australia.
| | - Phong A Tran
- Faculty of Science and Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, Melbourne, VIC 3010, Australia.
| | - Andrea J O'Connor
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, Melbourne, VIC 3010, Australia.
| | - Bruce G Mann
- The Department of Surgery, University of Melbourne, Parkville, VIC 3010, Australia.
- The Breast Service, Victorian Comprehensive Cancer Centre, Parkville, VIC 3052, Australia.
| | - Richard de Boer
- The Breast Service, Victorian Comprehensive Cancer Centre, Parkville, VIC 3052, Australia.
| | - Yanling He
- Department of Physics, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China.
| | - Alan Man Ching Ng
- Department of Physics, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China.
| | | | - Ravi Shukla
- School of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia.
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Sangeeta M, Karthik K, Ravishankar R, Anantharaju K, Nagabhushana H, Jeetendra K, Vidya Y, Renuka L. Synthesis of ZnO, MgO and ZnO/MgO by Solution Combustion Method: Characterization and Photocatalytic Studies. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.matpr.2017.09.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chung K, Tomljenovic-Hanic S. Emission Properties of Fluorescent Nanoparticles Determined by Their Optical Environment. NANOMATERIALS 2015; 5:895-905. [PMID: 28347043 PMCID: PMC5312883 DOI: 10.3390/nano5020895] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 05/11/2015] [Accepted: 05/25/2015] [Indexed: 11/16/2022]
Abstract
The emission rate of a radiating dipole within a nanoparticle is crucially dependent on its surrounding refractive index environment. In this manuscript, we present numerical results on how the emission rates are affected for nanoparticles in a homogenous and substrate environment. These results are general, applicable to any refractive index distribution and emitter.
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Affiliation(s)
- Kelvin Chung
- School of Physics, The University of Melbourne, Parkville, Victoria 3010, Australia.
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