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Dhamo L, Wegner KD, Würth C, Häusler I, Hodoroaba VD, Resch-Genger U. Assessing the influence of microwave-assisted synthesis parameters and stabilizing ligands on the optical properties of AIS/ZnS quantum dots. Sci Rep 2022; 12:22000. [PMID: 36539585 PMCID: PMC9767924 DOI: 10.1038/s41598-022-25498-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
Luminescent semiconductor quantum dots (QDs) are frequently used in the life and material sciences as reporter for bioimaging studies and as active components in devices such as displays, light-emitting diodes, solar cells, and sensors. Increasing concerns regarding the use of toxic elements like cadmium and lead, and hazardous organic solvents during QD synthesis have meanwhile triggered the search for heavy-metal free QDs using green chemistry syntheses methods. Interesting candidates are ternary AgInS2 (AIS) QDs that exhibit broad photoluminescence (PL) bands, large effective Stokes shifts, high PL quantum yields (PL QYs), and long PL lifetimes, which are particularly beneficial for applications such as bioimaging, white light-emitting diodes, and solar concentrators. In addition, these nanomaterials can be prepared in high quality with a microwave-assisted (MW) synthesis in aqueous solution. The homogeneous heat diffusion and instant temperature rise of the MW synthesis enables a better control of QD nucleation and growth and thus increases the batch-to-batch reproducibility. In this study, we systematically explored the MW synthesis of AIS/ZnS QDs by varying parameters such as the order of reagent addition, precursor concentration, and type of stabilizing thiol ligand, and assessed their influence on the optical properties of the resulting AIS/ZnS QDs. Under optimized synthesis conditions, water-soluble AIS/ZnS QDs with a PL QY of 65% and excellent colloidal and long-term stability could be reproducible prepared.
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Affiliation(s)
- Lorena Dhamo
- grid.71566.330000 0004 0603 5458Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany ,grid.7468.d0000 0001 2248 7639Departments of Physics, Humboldt Universität Zu Berlin, 12489 Berlin, Germany
| | - K. David Wegner
- grid.71566.330000 0004 0603 5458Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Christian Würth
- grid.71566.330000 0004 0603 5458Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Ines Häusler
- grid.7468.d0000 0001 2248 7639Departments of Physics, Humboldt Universität Zu Berlin, 12489 Berlin, Germany
| | - Vasile-Dan Hodoroaba
- grid.71566.330000 0004 0603 5458Division Surface Analysis and Interfacial Chemistry, Federal Institute for Materials Research and Testing (BAM), 12203 Berlin, Germany
| | - Ute Resch-Genger
- grid.71566.330000 0004 0603 5458Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
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Choi YK, Park T, Lee DHD, Ahn J, Kim YH, Jeon S, Han MJ, Oh SJ. Wearable anti-temperature interference strain sensor with metal nanoparticle thin film and hybrid ligand exchange. NANOSCALE 2022; 14:8628-8639. [PMID: 35660846 DOI: 10.1039/d2nr02392j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Anti-interference characteristics, whereby undesirable signal interference is minimized, are required for multifunctional sensor platforms. In this study, an anti-temperature-interference resistive-type strain sensor, which does not respond to temperature but only to strain, is designed. Anti-interference properties were achieved by modulating the temperature coefficient of resistance (TCR) of metal nanoparticles (NPs) through hybrid chemical treatment with organic and halide ligands that induce negative and positive TCRs, respectively. Consequently, a very low TCR of 1.9 × 10-5 K-1 was obtained. To investigate the origin of this near-zero TCR, analyses of correlated electrical, thermal, and mechanical properties were performed in addition to structural characterization and analysis. Density functional theory calculations and electrical percolation modeling were performed to illuminate the transport behavior in the near-zero-TCR NP thin films. Finally, we fabricated a high-performance anti-temperature-interference strain sensor using a solution process. The sensors detect a variety of strains, including those arising from large movements, such as wrist and knee movements, and fine movements, such as artery pulses or movements made during calligraphy, and did not respond to temperature changes.
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Affiliation(s)
- Young Kyun Choi
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Taesung Park
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Dong Hyun David Lee
- Department of Physics, Korea Advanced Institute of Science and Technology, 291, Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Junhyuk Ahn
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Yong Hwan Kim
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Sanghyun Jeon
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Myung Joon Han
- Department of Physics, Korea Advanced Institute of Science and Technology, 291, Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Soong Ju Oh
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
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Hashemkhani M, Loizidou M, MacRobert AJ, Yagci Acar H. One-Step Aqueous Synthesis of Anionic and Cationic AgInS 2 Quantum Dots and Their Utility in Improving the Efficacy of ALA-Based Photodynamic Therapy. Inorg Chem 2022; 61:2846-2863. [PMID: 35104130 PMCID: PMC8895404 DOI: 10.1021/acs.inorgchem.1c03298] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Indexed: 01/10/2023]
Abstract
Silver-indium-sulfide quantum dots (AIS QDs) have potential applications in many areas, including biomedicine. Their lack of regulated heavy metals, unlike many commercialized QDs, stands out as an advantage, but the necessity for alloyed or core-shell structures and related costly and sophisticated processes for the production of stable and high quantum yield aqueous AIS QDs are the current challenges. The present study demonstrates the one-step aqueous synthesis of simple AgInS2 QD compositions utilizing for the first time either a polyethyleneimine/2-mercaptopropionic acid (AIS-PEI/2MPA) mixture or only 2-mercaptopropionic acid (AIS-2MPA) as the stabilizing molecules, providing a AgInS2 portfolio consisting of cationic and anionic AIS QDs, respectively, and tuneable emission. Small AIS QDs with long-term stability and high quantum yields (19-23%) were achieved at a molar ratio of Ag/In/S 1/10/10 in water without any dopant or a semiconductor shell. The theranostic potential of these cationic and anionic AIS QDs was also evaluated in vitro. Non-toxic doses were determined, and fluorescence imaging potential was demonstrated. More importantly, these QDs were electrostatically loaded with zwitterionic 5-aminolevulinic acid (ALA) as a prodrug to enhance the tumor availability of ALA and to improve ALA-induced porphyrin photodynamic therapy (PDT). This is the first study investigating the influence of nanoparticle charge on ALA binding, release, and therapeutic efficacy. Surface charge was found to be more critical in cellular internalization and dark toxicity rather than drug loading and release. Both QDs provided enhanced ALA release at acidic pH but protected the prodrug at physiological pH, which is critical for tumor delivery of ALA, which suffers from low bioavailability. The PDT efficacy of the ALA-loaded AIS QDs was tested in 2D monolayers and 3D constructs of HT29 and SW480 human colon adenocarcinoma cancer cell lines. The incorporation of ALA delivery by the AIS QDs, which on their own do not cause phototoxicity, elicited significant cell death due to enhanced light-induced ROS generation and apoptotic/necrotic cell death, reducing the IC50 for ALA dramatically to about 0.1 and 0.01 mM in anionic and cationic AIS QDs, respectively. Combined with simple synthetic methods, the strong intracellular photoluminescence of AIS QDs, good biocompatibility of especially the anionic AIS QDs, and the ability to act as drug carriers for effective PDT signify that the AIS QDs, in particular AIS-2MPA, are highly promising theranostic QDs.
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Affiliation(s)
- Mahshid Hashemkhani
- Graduate
School of Materials Science and Engineering, Koç University, Rumelifeneri Yolu, Sariyer, Istanbul 34450, Turkey
| | - Marilena Loizidou
- Division
of Surgery and Interventional Science, Centre for Nanomedicine and
Surgical Theranostics, University College
London, Royal Free Campus, Rowland Hill Street, London NW3 2PE, U.K.
| | - Alexander J. MacRobert
- Division
of Surgery and Interventional Science, Centre for Nanomedicine and
Surgical Theranostics, University College
London, Royal Free Campus, Rowland Hill Street, London NW3 2PE, U.K.
| | - Havva Yagci Acar
- Graduate
School of Materials Science and Engineering, Koç University, Rumelifeneri Yolu, Sariyer, Istanbul 34450, Turkey
- Department
of Chemistry, Koç University, KUYTAM, Rumelifeneri Yolu, Sariyer, Istanbul 34450, Turkey
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Miropoltsev M, Kuznetsova V, Tkach A, Cherevkov S, Sokolova A, Osipova V, Gromova Y, Baranov M, Fedorov A, Gun’ko Y, Baranov A. FRET-Based Analysis of AgInS 2/ZnAgInS/ZnS Quantum Dot Recombination Dynamics. NANOMATERIALS 2020; 10:nano10122455. [PMID: 33302496 PMCID: PMC7763287 DOI: 10.3390/nano10122455] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 12/13/2022]
Abstract
Ternary quantum dots (QDs) are very promising nanomaterials with a range of potential applications in photovoltaics, light-emitting devices, and biomedicine. Despite quite intensive studies of ternary QDs over the last years, the specific relaxation channels involved in their emission mechanisms are still poorly understood, particularly in the corresponding core-shell nanostructures. In the present work, we have studied the recombination pathways of AgInS2 QDs stabilized with the ZnAgInS alloy layer and the ZnS shell (AIS/ZAIS/ZnS QDs) using time-resolved fluorescence spectroscopy. We have also investigated FRET in complexes of AIS/ZAIS/ZnS QDs and cyanine dyes with the absorption bands overlapping in the different regions of the QD emission spectrum, which allowed us to selectively quench the radiative transitions of the QDs. Our studies have demonstrated that FRET from QDs to dyes results in decreasing of all QD PL decay components with the shortest lifetime decreasing the most and the longest one decreasing the least. This research presents important approaches for the investigation of ternary QD luminescence mechanisms by the selective quenching of recombination pathways. These studies are also essential for potential applications of ternary QDs in photodynamic therapy, multiplex analysis, and time-resolved FRET sensing.
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Affiliation(s)
- Maksim Miropoltsev
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Vera Kuznetsova
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
- Correspondence:
| | - Anton Tkach
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Sergei Cherevkov
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Anastasiia Sokolova
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Viktoria Osipova
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Yulia Gromova
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Mikhail Baranov
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Anatoly Fedorov
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
| | - Yurii Gun’ko
- Chemistry School, Trinity College Dublin, Dublin 2 Dublin, Ireland;
| | - Alexander Baranov
- Center of Information Optical Technology, ITMO University, 197101 Saint Petersburg, Russia; (M.M.); (A.T.); (S.C.); (A.S.); (V.O.); (Y.G.); (M.B.); (A.F.); (A.B.)
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Nevárez Martínez MC, Bajorowicz B, Klimczuk T, Żak A, Łuczak J, Lisowski W, Zaleska-Medynska A. Synergy between AgInS 2 quantum dots and ZnO nanopyramids for photocatalytic hydrogen evolution and phenol degradation. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:123250. [PMID: 32768851 DOI: 10.1016/j.jhazmat.2020.123250] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/31/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
Despite the unique properties of single semiconductor nanomaterials and quantum dots, poor photocatalytic activity has characterized them and the fabrication of nanocomposites has become necessary to enhance their photocatalytic performance. Thus, AgInS2 quantum dots (AIS QDs, 4.0 ± 1.6 nm), have been successfully prepared and loaded onto ZnO nanopyramids (ZnO NPy). The effect of the nominal amount of AIS QDs decorating ZnO NPy on the morphology, optical properties, structure and surface chemistry of the nanocomposites was systematically studied. Photocatalytic tests revealed that the 1%AIS@ZnO NPy sample reported the highest photoactivity for phenol degradation in aqueous phase (92 % after one hour of irradiation, λ > 350 nm) that was 4 and 68 times the reported for bare ZnO NPy and AIS QDs, respectively. Accordingly, the maximum photocatalytic hydrogen evolution, under UV-vis light, for the same sample corresponded to 17 and 21 times the estimated for pristine ZnO NPy and AIS QDs, respectively. Hence, the AIS QDs - ZnO system has been applied in the photocatalytic field for the first time in this work and a synergetic effect was confirmed owing to a strong heterojunction formation between both semiconductors that allows an enhanced charge carrier separation, improving the photocatalytic activity.
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Affiliation(s)
- María C Nevárez Martínez
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland.
| | - Beata Bajorowicz
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland.
| | - Tomasz Klimczuk
- Department of Solid State Physics, Gdansk University of Technology, 80-233 Gdansk, Poland.
| | - Andrzej Żak
- Electron Microscopy Laboratory, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland.
| | - Justyna Łuczak
- Department of Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdansk, Poland.
| | - Wojciech Lisowski
- Institute of Physical Chemistry, Polish Academy of Science, 01-224 Warsaw, Poland.
| | - Adriana Zaleska-Medynska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland.
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Zhang D, Cao W, Mao B, Liu Y, Li F, Dong W, Jiang T, Yong YC, Shi W. Efficient 0D/2D Heterostructured Photocatalysts with Zn-AgIn5S8 Quantum Dots Embedded in Ultrathin NiS Nanosheets for Hydrogen Production. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02397] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dongqi Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Weijing Cao
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Baodong Mao
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Yanhong Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Fenghua Li
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Weixuan Dong
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Tianyao Jiang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Yang-Chun Yong
- Biofuels Institute, School of the Environment, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P.R. China
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Sun L, Li J, Li X, Liu C, Wang H, Huo P, Yan YS. Molecularly imprinted Ag/Ag3VO4/g-C3N4 Z-scheme photocatalysts for enhanced preferential removal of tetracycline. J Colloid Interface Sci 2019; 552:271-286. [DOI: 10.1016/j.jcis.2019.05.060] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/12/2019] [Accepted: 05/19/2019] [Indexed: 01/16/2023]
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