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Balhara A, Gupta SK, Debnath AK, Sudarshan K. Utilizing Energy Transfer in Mn 2+/Ho 3+/Yb 3+ Tri-doped ZnAl 2O 4 Nanophosphors for Tunable Luminescence and Highly Sensitive Visual Cryogenic Thermometry. ACS OMEGA 2023; 8:30459-30473. [PMID: 37636912 PMCID: PMC10448494 DOI: 10.1021/acsomega.3c03629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023]
Abstract
Lanthanide (Ln3+)-doped upconversion (UC) phosphors converting near-infrared (NIR) light to visible light hold very high promise toward biomedical applications. The scientific findings on luminescent thermometers revealed their superiority for noninvasive thermal sensing. However, only few reports showcase their potential for applications in extreme conditions (temperatures below -70 °C) restricted by low thermal sensitivity. Here, we demonstrate the tailoring of luminescence properties via introducing Ho3+-Mn2+ energy transfer (ET) routes with judicious codoping of Mn2+ ions in ZnAl2O4/Ho3+,Yb3+ phosphor. Preferentially, a singular red UC emission is required to improve the bioimaging sensitivity and minimize tissue damage. We could attain UC emission with 94% red component by a two-photon UC process. Higher temperature annealing brings the color coordinates to the green domain, highlighting the potential for color-tunable luminescence switch. Moreover, this work investigates the thermometric properties of ZnAl2O4/Yb3+, Ho3+ in the range of 80-300 K and influence of inducing extra ET pathways by Mn2+ codoping. Interestingly, the luminescence intensities for nonthermally coupled (5F4,5S2) and the 5F5 radiative transitions of Ho3+ ions display opposite behavior at 80 and 300 K, which revealed competition between temperature-sensitive decay pathways. The codoping of Mn2+ ions is fruitful in causing a fourfold increase of absolute sensitivity. Notably, the color tunability from green through yellow to red is helpful in rough temperature estimation by naked eyes. The maximum relative (Sr) and absolute sensitivities (Sa) were estimated to be 1.89% K-1 (140 K) and 0.0734 K-1 (300 K), respectively. Even at 80 K, a Sa of 0.00447 K-1 and Sr of 0.6025% K-1 were achievable in our case, which are higher than most of the other Ln3+-based systems. The above-mentioned results demonstrate the potential of ZnAl2O4/Yb3+,Ho3+ for cryogenic optical thermometry and a strategy to design new Ln3+-based UC thermometers by taking advantage of ET routes.
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Affiliation(s)
- Annu Balhara
- Homi
Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
- Radiochemistry
Division, Bhabha Atomic Research Centre,Trombay, Mumbai 400085, India
| | - Santosh Kumar Gupta
- Homi
Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
- Radiochemistry
Division, Bhabha Atomic Research Centre,Trombay, Mumbai 400085, India
| | - Anil Krishna Debnath
- Homi
Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
- Technical
Physics Division, Bhabha Atomic Research
Centre, Trombay, Mumbai 400085, India
| | - Kathi Sudarshan
- Homi
Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
- Radiochemistry
Division, Bhabha Atomic Research Centre,Trombay, Mumbai 400085, India
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Shwetabh K, Maurya SK, Banerjee A, Poddar R, Kumar K. Synthesis of NaYF 4:Ho 3+/Yb 3+ colloidal upconversion phosphor and its application for OCT-based imaging, temperature sensing, fingerprinting and security ink. NEW J CHEM 2022. [DOI: 10.1039/d2nj03878a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this work, an NaYF4:Ho3+/Yb3+ upconversion phosphor in colloidal form was synthesized and then its suitability for image contrast enhancement in optical coherence tomography (OCT) and photothermal (PT) OCT imaging was analysed.
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Affiliation(s)
- Kumar Shwetabh
- Optical Materials and Bio-imaging Research Laboratory, Department of Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Sachin K. Maurya
- Optical Materials and Bio-imaging Research Laboratory, Department of Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Abhishek Banerjee
- Biophotonics Lab, Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand-835215, India
| | - Raju Poddar
- Biophotonics Lab, Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand-835215, India
| | - K. Kumar
- Optical Materials and Bio-imaging Research Laboratory, Department of Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
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Kumar R, Mondal K, Panda PK, Kaushik A, Abolhassani R, Ahuja R, Rubahn HG, Mishra YK. Core-shell nanostructures: perspectives towards drug delivery applications. J Mater Chem B 2020; 8:8992-9027. [PMID: 32902559 DOI: 10.1039/d0tb01559h] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nanosystems have shown encouraging outcomes and substantial progress in the areas of drug delivery and biomedical applications. However, the controlled and targeted delivery of drugs or genes can be limited due to their physicochemical and functional properties. In this regard, core-shell type nanoparticles are promising nanocarrier systems for controlled and targeted drug delivery applications. These functional nanoparticles are emerging as a particular class of nanosystems because of their unique advantages, including high surface area, and easy surface modification and functionalization. Such unique advantages can facilitate the use of core-shell nanoparticles for the selective mingling of two or more different functional properties in a single nanosystem to achieve the desired physicochemical properties that are essential for effective targeted drug delivery. Several types of core-shell nanoparticles, such as metallic, magnetic, silica-based, upconversion, and carbon-based core-shell nanoparticles, have been designed and developed for drug delivery applications. Keeping the scope, demand, and challenges in view, the present review explores state-of-the-art developments and advances in core-shell nanoparticle systems, the desired structure-property relationships, newly generated properties, the effects of parameter control, surface modification, and functionalization, and, last but not least, their promising applications in the fields of drug delivery, biomedical applications, and tissue engineering. This review also supports significant future research for developing multi-core and shell-based functional nanosystems to investigate nano-therapies that are needed for advanced, precise, and personalized healthcare systems.
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Affiliation(s)
- Raj Kumar
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan-52900, Israel.
| | - Kunal Mondal
- Materials Science and Engineering Department, Idaho National Laboratory, Idaho Falls, ID 83415, USA.
| | - Pritam Kumar Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120, Uppsala, Sweden
| | - Ajeet Kaushik
- NanoBioTech Laboratory, Department of Natural Sciences, Division of Sciences, Art, & Mathematics, Florida Polytechnic University, Lakeland, FL-33805, USA
| | - Reza Abolhassani
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, DK-6400, Sønderborg, Denmark.
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120, Uppsala, Sweden and Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology (KTH), SE-10044 Stockholm, Sweden
| | - Horst-Günter Rubahn
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, DK-6400, Sønderborg, Denmark.
| | - Yogendra Kumar Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, DK-6400, Sønderborg, Denmark.
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4
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Advances in nanotechnology and nanomaterials based strategies for neural tissue engineering. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101617] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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5
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Prorok K, Olk M, Skowicki M, Kowalczyk A, Kotulska A, Lipiński T, Bednarkiewicz A. Near-infrared excited luminescence and in vitro imaging of HeLa cells by using Mn 2+ enhanced Tb 3+ and Yb 3+ cooperative upconversion in NaYF 4 nanocrystals. NANOSCALE ADVANCES 2019; 1:3463-3473. [PMID: 36133550 PMCID: PMC9416878 DOI: 10.1039/c9na00336c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 07/10/2019] [Indexed: 06/16/2023]
Abstract
Advanced biodetection and bioimaging require fluorescent labels which exhibit many, easily distinguishable colors to identify or study numerous biotargets in a single sample. Although numerous different colors have been demonstrated with lanthanide doped nanoparticles, these colors usually originate from various ratios of overlapping multiple emission bands from activators, which severely limits the number of available labels. As a consequence, different lanthanide doped labels cannot be easily distinguished from each other (e.g. Er3+ from Ho3+) in a quantitative way, when such labels are co-localized during microscopy wide-field imaging. It is therefore reasonable to expand the available choice of spectral signatures and not rely on just different colors. Other ions, such as Tb3+ or Eu3+, can offer new possibilities and unique spectral features in upconversion mode in this respect. For example, despite partial overlap with Er3+ or Ho3+ emission spectra, Tb3+ ions display also unique and easily distinguishable spectral features at 580 nm. Unfortunately, in terms of brightness, Tb3+ emission in upconversion mode is typically too weak to be useful. To improve the Tb3+ upconversion emission intensity, a new approach, i.e. Mn2+ co-doping, has been proposed and verified in this work. A versatile optimization of Tb3+, Yb3+ and Mn2+ ion concentrations has been performed based on luminescence spectra and lifetime studies. The most intense emission was achieved for nanoparticles doped with 10% Mn2+ ions, with over 30 times brighter intensity of Tb3+ ions compared to the emission of nanocrystals without the addition of Mn2+ ions. Additionally, as a proof of the concept, the surface of nanoparticles was coated with proteins and conjugated with folic acid, and such biofunctionalized nanoparticles were subsequently used for bioimaging of HeLa cells.
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Affiliation(s)
- Katarzyna Prorok
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences Okolna 2 50-422 Wroclaw Poland
| | - Michał Olk
- Institute of Immunology and Experimental Therapy, Polish Academy of Sciences R. Weigla 12 53-114 Wroclaw Poland
| | - Michał Skowicki
- Lukasiewicz Research Network - PORT Polish Center for Technology Development Stablowicka 147 54-066 Wroclaw Poland
| | - Agnieszka Kowalczyk
- Lukasiewicz Research Network - PORT Polish Center for Technology Development Stablowicka 147 54-066 Wroclaw Poland
| | - Agata Kotulska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences Okolna 2 50-422 Wroclaw Poland
| | - Tomasz Lipiński
- Lukasiewicz Research Network - PORT Polish Center for Technology Development Stablowicka 147 54-066 Wroclaw Poland
| | - Artur Bednarkiewicz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences Okolna 2 50-422 Wroclaw Poland
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Cesaria M, Di Bartolo B. Nanophosphors-Based White Light Sources. NANOMATERIALS 2019; 9:nano9071048. [PMID: 31336578 PMCID: PMC6669494 DOI: 10.3390/nano9071048] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/14/2019] [Accepted: 07/17/2019] [Indexed: 11/16/2022]
Abstract
Miniaturization requests and progress in nanofabrication are prompting worldwide interest in nanophosphors as white-emission mercury-free lighting sources. By comparison with their bulk counterparts, nanophosphors exhibit reduced concentration quenching effects and a great potential to enhance luminescence efficiency and tunability. In this paper, the physics of the nanophoshors is overviewed with a focus on the impact of spatial confinement and surface-to-volume ratio on the luminescence issue, as well as rare earth-activated multicolor emission for white light (WL) output. In this respect, the prominently practiced strategies to achieve WL emission are single nanophosphors directly yielding WL by means of co-doping and superposition of the individual red, green, and blue emissions from different nanophosphors. Recently, a new class of efficient broadband WL emitting nanophosphors has been proposed, i.e., nominally un-doped rare earth free oxide (yttrium oxide, Y2O3) nanopowders and Cr transition metal-doped garnet nanocrystals. In regard to this unconventional WL emission, the main points are: it is strictly a nanoscale phenomenon, the presence of an emitting center may favor WL emission without being necessary for observing it, and, its inherent origin is still unknown. A comparison between such an unconventional WL emission and the existing literature is presented to point out its novelty and superior lighting performances.
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Affiliation(s)
- Maura Cesaria
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, prov.le Via Arnesano, 73100 Lecce, Italy.
- Department of Physics, Boston College, Chestnut Hill, MA 02215, USA.
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7
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Reddy KL, Kumar S, Kumar A, Krishnan V. Wide spectrum photocatalytic activity in lanthanide-doped upconversion nanophosphors coated with porous TiO 2 and Ag-Cu bimetallic nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2019; 367:694-705. [PMID: 30654287 DOI: 10.1016/j.jhazmat.2019.01.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 12/07/2018] [Accepted: 01/02/2019] [Indexed: 05/10/2023]
Abstract
Approaches towards maximum utilization of solar light spectrum for photocatalysis have currently attracted great interest. The combination of profoundly different properties, such as, upconversion, semiconducting and plasmonic properties can produce a favorable path in efficient utilization of the different regions of solar light reaching to earth. In this regard, design and fabrication of microstructures consisting of upconverting lanthanide doped nanophosphors coated with porous semiconducting material, TiO2 and decorated with plasmonic Ag-Cu bimetallic nanoparticles is presented in this work. These microstructures display great stability and exceptional photocatalytic activity by absorbing wide spectrum from ultraviolet to near infrared. The photocatalytic activity could be attributed to the synergistic effects between the different components and the efficient energy transfer between them. The development of such sort of hybrid microstructures could pave way for the development of new materials for the efficient utilization of the wide spectrum of sunlight.
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Affiliation(s)
- Kumbam Lingeshwar Reddy
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi-175005, Himachal Pradesh, India
| | - Suneel Kumar
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi-175005, Himachal Pradesh, India
| | - Ajay Kumar
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi-175005, Himachal Pradesh, India
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi-175005, Himachal Pradesh, India.
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8
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Du S, Wang Y. Near-white photoluminescence in paramagnetic Gd 6O 5F 8 nanoparticles. CrystEngComm 2019. [DOI: 10.1039/c9ce01067j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
White light emission has been achieved by near full band excitation from 10.7 nm sized pure Gd6O5F8 nanoparticles.
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Affiliation(s)
- Shanshan Du
- National and Local Joint Engineering Laboratory for Optical Conversion Materials and Technology of the National Development and Reform Commission
- Lanzhou University
- Lanzhou
- China
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education
| | - Yuhua Wang
- National and Local Joint Engineering Laboratory for Optical Conversion Materials and Technology of the National Development and Reform Commission
- Lanzhou University
- Lanzhou
- China
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education
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9
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Amine-functionalized, porous silica-coated NaYF 4:Yb/Er upconversion nanophosphors for efficient delivery of doxorubicin and curcumin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 96:86-95. [PMID: 30606601 DOI: 10.1016/j.msec.2018.11.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 09/24/2018] [Accepted: 11/04/2018] [Indexed: 12/18/2022]
Abstract
Upconversion nanoparticles (UCNP) with unique multi-photon excitation photo-luminescence properties have been extensively explored as novel contrast agents for low-background biomedical imaging. There is an increasing interest in employing UCNPs as carrier for drug delivery as these offers a unique opportunity to combine therapy and diagnostics in one platform (theranostics). In the present work, we report microwave-assisted synthesis of hexagonal NaYF4:Yb/Er UCNPs coated with porous silica and functionalized with amine (UCNP@mSiO2). The UCNP@mSiO2 were investigated for controlled delivery of a chemotherapeutic agent, doxorubicin (DOX, hydrophilic), and a chemosensitizing agent, curcumin (CCM, hydrophobic). The drug loading was relatively higher for DOX (17.4%), in comparison to CCM (8.1%). The cumulative drug release from DOX-loaded UCNP@mSiO2 were 30 and 41% at physiological (7.4) and tumoral (6.4) pH, following a pseudo Fickian release pattern, whereas the release from CCM-loaded UCNP@mSiO2 were 27 and 50% at pH 7.4 and 6.4, following a non-Fickian and pseudo-Fickian release patterns, respectively. Both DOX and CCM-loaded UCNP@mSiO2 exhibited pH-dependent controlled drug delivery but the effect was more pronounced for CCM, the hydrophobic chemosensitizer. Cell viability assay using HeLa cells showed that DOX-loaded UCNP@mSiO2 inhibit cell growth in a dose-dependent manner, similar to free DOX, but the cell inhibition activity of free CCM was lower than CCM passively entrapped in UCNP@mSiO2. Confocal microscopy studies revealed cell uptake of both the drug by HeLa cells. Thus, UCNP@mSiO2 exhibited the unique capability to deliver hydrophilic and hydrophobic drugs, individually. UCNP@mSiO2 carrier, equipped with theranostic capabilities, may potentially be used for pH-responsive release of chemotherapeutic agents in cancer environment.
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10
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Recent progress in the green synthesis of rare-earth doped upconversion nanophosphors for optical bioimaging from cells to animals. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.03.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Lingeshwar Reddy K, Balaji R, Kumar A, Krishnan V. Lanthanide Doped Near Infrared Active Upconversion Nanophosphors: Fundamental Concepts, Synthesis Strategies, and Technological Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801304. [PMID: 30066489 DOI: 10.1002/smll.201801304] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/31/2018] [Indexed: 06/08/2023]
Abstract
Near infrared (NIR) light utilization in a range of current technologies has gained huge significance due to its abundance in nature and nondestructive properties. NIR active lanthanide (Ln) doped upconversion nanomaterials synthesized in controlled shape, size, and surface functionality can be combined with various pertinent materials for extensive applications in diverse fields. Upconversion nanophosphors (UCNP) possess unique abilities, such as deep tissue penetration, enhanced photostability, low toxicity, sharp emission peaks, long anti-Stokes shift, etc., which have bestowed them with prodigious advantages over other conventional luminescent materials. As new generation fluorophores, UCNP have found a wide range of applications in various fields. In this Review, a comprehensive overview of lanthanide doped NIR active UCNP is provided by discussing the fundamental concepts including the different mechanisms proposed for explaining the upconversion processes, followed by the different strategies employed for the synthesis of these materials, and finally the technological applications of UCNP, mainly in the fields of bioimaging, drug delivery, sensing, and photocatalysis by highlighting the recent works in these areas. In addition, a brief note on the applications of UCNP in other fields is also provided along with the summary and future perspectives of these materials.
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Affiliation(s)
- Kumbam Lingeshwar Reddy
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175005, India
| | - Ramachandran Balaji
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175005, India
| | - Ashish Kumar
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175005, India
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175005, India
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12
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Lingeshwar Reddy K, Prabhakar N, Rosenholm JM, Krishnan V. Core-Shell Structures of Upconversion Nanocrystals Coated with Silica for Near Infrared Light Enabled Optical Imaging of Cancer Cells. MICROMACHINES 2018; 9:E400. [PMID: 30424333 PMCID: PMC6187455 DOI: 10.3390/mi9080400] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 11/25/2022]
Abstract
Optical imaging of cancer cells using near infrared (NIR) light is currently an active area of research, as this spectral region directly corresponds to the therapeutic window of biological tissues. Upconversion nanocrystals are photostable alternatives to conventional fluorophores. In our work, we have prepared upconversion nanocrystals of NaYF₄:Yb/Er and encapsulated them in silica to form core-shell structures. The as-prepared core-shell nanostructures have been characterized for their structure, morphology, and optical properties using X-ray diffraction, transmission electron microscopy coupled with elemental mapping, and upconversion luminescence spectroscopy, respectively. The cytotoxicity examined using cell viability assay indicated a low level of toxicity of these core-shell nanostructures. Finally, these core-shell nanostructures have been utilized as photostable probes for NIR light enabled optical imaging of human breast cancer cells. This work paves the way for the development of advanced photostable, biocompatible, low-toxic core-shell nanostructures for potential optical imaging of biological cells and tissues.
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Affiliation(s)
- Kumbam Lingeshwar Reddy
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi 175005, Himachal Pradesh, India.
| | - Neeraj Prabhakar
- Pharmaceutical Sciences Laboratory, Faculty of Sciences and Engineering, Åbo Akademi University, 20520 Turku, Finland.
| | - Jessica M Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Sciences and Engineering, Åbo Akademi University, 20520 Turku, Finland.
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi 175005, Himachal Pradesh, India.
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Role of Mn 2+ Doping in the Preparation of Core-Shell Structured Fe₃O₄@upconversion Nanoparticles and Their Applications in T₁/T₂-Weighted Magnetic Resonance Imaging, Upconversion Luminescent Imaging and Near-Infrared Activated Photodynamic Therapy. NANOMATERIALS 2018; 8:nano8070466. [PMID: 29949933 PMCID: PMC6070927 DOI: 10.3390/nano8070466] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 06/21/2018] [Accepted: 06/22/2018] [Indexed: 01/10/2023]
Abstract
Core-shell (C/S) structured upconversion coated Fe3O4 nanoparticles (NPs) are of great interest due to their potential as magnetic resonance imaging (MRI) and upconversion luminescent (UCL) imaging agents, as well as near-infrared activated photodynamic therapy (PDT) platforms. When C/S structured Fe3O4@Mn2+-doped NaYF4:Yb/Er NPs were prepared previously, well-defined C/S-NPs could not be formed without the doping of Mn2+ during synthesis. Here, the role of Mn2+ doping on the synthesis of core-shell structured magnetic-upconversion nanoparticles (MUCNPs) is investigated in detail. Core-shell-shell nanoparticles (C/S/S-MUCNPs) with Fe3O4 as the core, an inert layer of Mn2+-doped NaYF4 and an outer shell consisting of Mn2+-doped NaYF4:Yb/Er were prepared. To further develop C/S/S-MUCNPs applications in the biological field, amphiphilic poly(maleic anhydride-alt-1-octadecene) (C18PMH) modified with amine functionalized methoxy poly(ethylene glycol) (C18PMH-mPEG) was used as a capping ligand to modify the surface of C/S/S-MUCNPs to improve biocompatibility. UCL imaging, T1-weighted MRI ascribed to the Mn2+ ions and T2-weighted MRI ascribed to the Fe3O4 core of C/S/S-MUCNPs were then evaluated. Finally, chlorine e6 (Ce6) was loaded on the C/S/S-MUCNPs and the PDT performance of these NPs was explored. Mn2+ doping is an effective method to control the formation of core-shell structured MUCNPs, which would be potential candidate as multifunctional nanoprobes for future T1/T2-weighted MR/UCL imaging and PDT platforms.
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14
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Jain N, Singh RK, Sinha S, Singh RA, Singh J. Color tunable emission through energy transfer from Yb3+ co-doped SrSnO3: Ho3+ perovskite nano-phosphor. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0778-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Chen D, Xu M, Liu Y, Wang R, Zhang Z, Sun K, Tao K. Fixed-diameter upconversion nanorods with controllable length and their interaction with cells. J Colloid Interface Sci 2018; 512:591-599. [PMID: 29100163 DOI: 10.1016/j.jcis.2017.10.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/19/2017] [Accepted: 10/20/2017] [Indexed: 10/18/2022]
Abstract
A series of NaYF4: Yb, Er upconversion nanorods with fixed diameter and controllable length were synthesized by the injection of sodium trifluoroacetate (CF3COONa) mixed with potassium trifluoroacetate (CF3COOK) precursor into a heated solution of ligand. We found that with the increased percentage of CF3COOK, the length of resultant nanorods was increased from ∼40 nm to ∼200 nm whilst the diameter was kept in a narrow range of 37-42 nm. The elongation of nanorods was attributed to the specific absorption of sodium oleate on the prismatic facets, and the integration of potassium ions into the lattice as well. We further found that the elongated length affected the relative fluorescence intensity between red and green emission. More importantly, with fixed diameter, the cellular uptake of nanorods was found decreasing with the increase of their length. Meanwhile the decrease of diameter resulted in an increased cellular uptake. These results were attributed to both specific surface area and possibly varied contacting angle between nanorods and cell membrane. The current work not only suggested a synthetic method for the precise control of upconversion nanorods, but also shed light on the design of nanocrystals for cell-related biomedical applications.
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Affiliation(s)
- Dexin Chen
- State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Mengyuan Xu
- Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 201620, PR China; Department of Burn and Plastic Surgery, Jiangsu Taizhou People's Hospital, 225300 Taizhou, PR China
| | - Yanyue Liu
- State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Rongying Wang
- State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Zhaofeng Zhang
- Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 201620, PR China
| | - Kang Sun
- State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Ke Tao
- State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China.
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16
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Reddy KL, Venkateswarulu M, Shankar KR, Ghosh S, Krishnan V. Upconversion Luminescent Material-Based Inorganic-Organic Hybrid Sensing System for the Selective Detection of Hydrazine in Environmental Samples. ChemistrySelect 2018. [DOI: 10.1002/slct.201702666] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kumbam Lingeshwar Reddy
- School of Basic Sciences and Advanced Materials Research Center; Indian Institute of Technology Mandi, Kamand; Mandi 175005 Himachal Pradesh India
| | - Mangili Venkateswarulu
- School of Basic Sciences and Advanced Materials Research Center; Indian Institute of Technology Mandi, Kamand; Mandi 175005 Himachal Pradesh India
| | - Konathala Ravi Shankar
- School of Basic Sciences and Advanced Materials Research Center; Indian Institute of Technology Mandi, Kamand; Mandi 175005 Himachal Pradesh India
- Current address: School of Nano Sciences; Central University of Gujarat; Gandhinagar 382030 Gujarat India
| | - Subrata Ghosh
- School of Basic Sciences and Advanced Materials Research Center; Indian Institute of Technology Mandi, Kamand; Mandi 175005 Himachal Pradesh India
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research Center; Indian Institute of Technology Mandi, Kamand; Mandi 175005 Himachal Pradesh India
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17
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Chen X, Sun J, Zhao H, Yang K, Zhu Y, Luo H, Yu K, Fan H, Zhang X. Theranostic system based on NaY(Mn)F4:Yb/Er upconversion nanoparticles with multi-drug resistance reversing ability. J Mater Chem B 2018; 6:3586-3599. [DOI: 10.1039/c8tb00416a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An innovative theranostic system (D-UNT) for MDR tumors diagnosis and therapy based on the red emitter NaY(Mn)F4:Yb/Er with optimized luminescence was developed.
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Affiliation(s)
- Xiaoqin Chen
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Jing Sun
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Huan Zhao
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Ke Yang
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Yuda Zhu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Hongrong Luo
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Kui Yu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Hongsong Fan
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
- P. R. China
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