1
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Attwood M, Xu X, Newns M, Meng Z, Ingle RA, Wu H, Chen X, Xu W, Ng W, Abiola TT, Stavros VG, Oxborrow M. N-Heteroacenes as an Organic Gain Medium for Room-Temperature Masers. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:4498-4509. [PMID: 37332679 PMCID: PMC10268955 DOI: 10.1021/acs.chemmater.3c00640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/04/2023] [Indexed: 06/20/2023]
Abstract
The development of future quantum devices such as the maser, i.e., the microwave analog of the laser, could be well-served by the exploration of chemically tunable organic materials. Current iterations of room-temperature organic solid-state masers are composed of an inert host material that is doped with a spin-active molecule. In this work, we systematically modulated the structure of three nitrogen-substituted tetracene derivatives to augment their photoexcited spin dynamics and then evaluated their potential as novel maser gain media by optical, computational, and electronic paramagnetic resonance (EPR) spectroscopy. To facilitate these investigations, we adopted an organic glass former, 1,3,5-tri(1-naphthyl)benzene to act as a universal host. These chemical modifications impacted the rates of intersystem crossing, triplet spin polarization, triplet decay, and spin-lattice relaxation, leading to significant consequences on the conditions required to surpass the maser threshold.
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Affiliation(s)
- Max Attwood
- Department
of Materials, Imperial College London, South Kensington Campus, Exhibition
Road, London SW7 2AZ, U.K.
| | - Xiaotian Xu
- Department
of Materials, Imperial College London, South Kensington Campus, Exhibition
Road, London SW7 2AZ, U.K.
| | - Michael Newns
- Department
of Materials, Imperial College London, South Kensington Campus, Exhibition
Road, London SW7 2AZ, U.K.
| | - Zhu Meng
- Molecular
Sciences Research Hub, Department of Chemistry, Imperial College London, White City Campus, 82 Wood Lane, London W12 0BZ, U.K.
| | - Rebecca A. Ingle
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Hao Wu
- Center
for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic
Quantum Architecture and Measurements, School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Xi Chen
- Department
of Materials, Imperial College London, South Kensington Campus, Exhibition
Road, London SW7 2AZ, U.K.
- Department
of Computer Science, University of Southern
California, Los Angeles, California 90089, United States
| | - Weidong Xu
- Molecular
Sciences Research Hub, Department of Chemistry, Imperial College London, White City Campus, 82 Wood Lane, London W12 0BZ, U.K.
| | - Wern Ng
- Department
of Materials, Imperial College London, South Kensington Campus, Exhibition
Road, London SW7 2AZ, U.K.
| | - Temitope T. Abiola
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Canada
| | | | - Mark Oxborrow
- Department
of Materials, Imperial College London, South Kensington Campus, Exhibition
Road, London SW7 2AZ, U.K.
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2
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Castro KADF, Moura NMM, Simões MMQ, Mesquita MMQ, Ramos LCB, Biazzotto JC, Cavaleiro JAS, Faustino MAF, Neves MGPMS, da Silva RS. A Comparative Evaluation of the Photosensitizing Efficiency of Porphyrins, Chlorins and Isobacteriochlorins toward Melanoma Cancer Cells. Molecules 2023; 28:4716. [PMID: 37375269 DOI: 10.3390/molecules28124716] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/03/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Skin cancer is one of the cancers that registers the highest number of new cases annually. Among all forms of skin cancer, melanoma is the most invasive and deadliest. The resistance of this form of cancer to conventional treatments has led to the employment of alternative/complementary therapeutic approaches. Photodynamic therapy (PDT) appears to be a promising alternative to overcome the resistance of melanoma to conventional therapies. PDT is a non-invasive therapeutic procedure in which highly reactive oxygen species (ROS) are generated upon excitation of a photosensitizer (PS) when subjected to visible light of an adequate wavelength, resulting in the death of cancer cells. In this work, inspired by the efficacy of tetrapyrrolic macrocycles to act as PS against tumor cells, we report the photophysical characterization and biological assays of isobacteriochlorins and their corresponding chlorins and porphyrins against melanoma cancer cells through a photodynamic process. The non-tumoral L929 fibroblast murine cell line was used as the control. The results show that the choice of adequate tetrapyrrolic macrocycle-based PS can be modulated to improve the performance of PDT.
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Affiliation(s)
- Kelly A D F Castro
- Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo 05508-220, Brazil
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Nuno M M Moura
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mário M Q Simões
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mariana M Q Mesquita
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Loyanne C B Ramos
- Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo 05508-220, Brazil
| | - Juliana C Biazzotto
- Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo 05508-220, Brazil
| | - José A S Cavaleiro
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - M Amparo F Faustino
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | | | - Roberto S da Silva
- Department of Biomolecular Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo 05508-220, Brazil
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3
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Ng W, Xu X, Attwood M, Wu H, Meng Z, Chen X, Oxborrow M. Move Aside Pentacene: Diazapentacene-Doped para-Terphenyl, a Zero-Field Room-Temperature Maser with Strong Coupling for Cavity Quantum Electrodynamics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2300441. [PMID: 36919948 DOI: 10.1002/adma.202300441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/04/2023] [Indexed: 06/02/2023]
Abstract
Masers can deliver ultralow-noise amplification of microwave signals in medical imaging and deep-space communication, with recent research being rekindled through the discovery of gain media operating at room-temperature, eschewing bulky cryogenics that hindered their use. This work shows the discovery of 6,13-diazapentacene doped in para-terphenyl (DAP:PTP) as a maser gain medium that can operate at room-temperature, without an external magnetic field. With a maser output power of -10 dBm, it is on par with pentacene-doped para-terphenyl in masing power, while possessing compelling advantages such as faster amplification startup times, being pumped by longer wavelength light at 620 nm and greater chemical stability from nitrogen groups. Furthermore, the maser bursts from DAP:PTP allow one to reach the strong coupling regime for cavity quantum electrodynamics, with a high cooperativity of 182. The optical and microwave spin dynamics of DAP:PTP are studied in order to evaluate its capabilities as a maser gain medium, where it features fast intersystem crossing and an advantageously higher triplet quantum yield. The results pave the way for the future discovery of similar maser materials and help designate them as promising candidates for quantum sensors, optoelectronic devices and the study of cavity quantum electrodynamic effects at room-temperature.
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Affiliation(s)
- Wern Ng
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
| | - Xiaotian Xu
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
| | - Max Attwood
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
| | - Hao Wu
- Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements (MOE), School of Physics, Beijing Institute of Technology, Beijing, 100081, China
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, China
| | - Zhu Meng
- Department of Chemistry and Centre for Processible Electronics, Imperial College London, London, W12 0BZ, UK
| | - Xi Chen
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
- Department of Computer Science, University of Southern California, Los Angeles, CA, USA
| | - Mark Oxborrow
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
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4
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Ciuti S, Carella A, Lucotti A, Tommasini M, Barbon A, Di Valentin M. Insights into the phototautomerism of free-base 5, 10, 15, 20-tetrakis(4-sulfonatophenyl) porphyrin. Photochem Photobiol Sci 2023:10.1007/s43630-023-00413-5. [PMID: 37038020 DOI: 10.1007/s43630-023-00413-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/21/2023] [Indexed: 04/12/2023]
Abstract
Phototautomerism in the excited states of free-base 5, 10, 15, 20-tetrakis(4-sulfonatophenyl) porphyrin (H2TPPS4-) has been investigated combining, for the first time, advanced Electron Paramagnetic Resonance (EPR) with fluorescence and Raman spectroscopy. Triplet EPR spectroscopy, performed in protic and deuterated solvents and in the presence of photoselection, confirms the occurrence of phototautomerization and additionally suggests the formation of the cis tautomer as a minor component. The zero-field splitting parameters and triplet sublevel populations indicate that the process is slow in the triplet state. The results obtained by EPR combined with photoselection and fluorescence anisotropy have been interpreted within a model which accounts for a fast trans-trans tautomerization promoted by a spin-vibronic coupling mechanism for intersystem crossing, with an even distribution of the two trans tautomers at liquid nitrogen temperatures for H2TPPS4-.
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Affiliation(s)
- Susanna Ciuti
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Angelo Carella
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Andrea Lucotti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, Politecnico di Milano, P.zza L. da Vinci 32, 20133, Milano, Italy
| | - Matteo Tommasini
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, Politecnico di Milano, P.zza L. da Vinci 32, 20133, Milano, Italy
| | - Antonio Barbon
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131, Padova, Italy.
| | - Marilena Di Valentin
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131, Padova, Italy
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5
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Phthalocyanine photosensitizers with bathochromic shift, of suitable brightness, capable of producing singlet oxygen with effective efficiency. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Dozza B, Rodrigues BM, Tisoco I, de Souza VB, Angnes L, Iglesias BA. Spectroelectrochemistry as a powerful technique for porphyrins/corroles derivatives electro-characterization: Fundamentals and some examples. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Nene LC, Magadla A, Nyokong T. Enhanced mitochondria destruction on MCF-7 and HeLa cell lines in vitro using triphenyl-phosphonium-labelled phthalocyanines in ultrasound-assisted photodynamic therapy activity. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 235:112553. [PMID: 36084362 DOI: 10.1016/j.jphotobiol.2022.112553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/24/2022] [Accepted: 08/30/2022] [Indexed: 11/18/2022]
Abstract
This work reports on the reactive oxygen species (ROS) generation and the therapeutic activities of new triphenyl-phosphonium-labelled phthalocyanines (Pcs), the 2,9,16,23-tetrakis(N-(N-butyl-4-triphenyl-phosphonium)- pyridine-4-yloxy) Zn(II) Pc (3) and 2,9,16,23-tetrakis-(N-(N-butyl-4-triphenyl-phosphonium)-morpholino) Zn(II) Pc (4) upon exposure to light, ultrasound and the combination of light and ultrasound. Two types of ROS were detected: the singlet oxygen (1O2) and hydroxyl radicals. For light irradiations, only the 1O2 was detected. An increase in the ROS generation was observed for samples treated with the combination of light and ultrasound compared to the light and ultrasound mono-treatments. The in vitro anticancer activity through photodynamic (PDT) and sonodynamic (SDT) therapy for the Pcs were also determined and compared to the photo-sonodynamic combination therapy (PSDT). The two cancer cell lines used for the in vitro studies included the Michigan Cancer Foundation-7 (MCF-7) breast cancer and Henrietta Lacks (HeLa) cervical cancer cell lines. The SDT treatments showed improved therapeutic efficacy on the cancer cells for both the Pcs compared to PDT. PSDT showed better therapeutic efficacy compared to both the PDT and SDT mono-treatments.
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Affiliation(s)
- Lindokuhle Cindy Nene
- Institute of Nanotechnology Innovation, P.O. 94, Rhodes University, Makhanda, South Africa
| | - Aviwe Magadla
- Institute of Nanotechnology Innovation, P.O. 94, Rhodes University, Makhanda, South Africa
| | - Tebello Nyokong
- Institute of Nanotechnology Innovation, P.O. 94, Rhodes University, Makhanda, South Africa.
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8
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Mkhondwane ST, Matshitse R, Nyokong T. Porphyrin-graphitic carbon nitride quantum dots decorated on titanium dioxide electrospun nanofibers for photocatalytic degradation of organic pollutants. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2132153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
| | - Refilwe Matshitse
- Institute of Nanotechnology Innovation, Rhodes University, Makhanda, South Africa
| | - Tebello Nyokong
- Institute of Nanotechnology Innovation, Rhodes University, Makhanda, South Africa
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9
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Mgidlana S, Sen P, Nyokong T. Photodegradation of tetracycline by asymmetrical zinc(II)phthalocyanines conjugated to cobalt tungstate nanoparticles. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Chizhova NV, Dmitrieva OA, Mamardashvili NZ. Synthesis, Structure, and Spectral Properties of Perhalogenated Metalloporphyrins. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622030056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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11
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Chen C, Gao H, Ou H, Kwok RTK, Tang Y, Zheng D, Ding D. Amplification of Activated Near-Infrared Afterglow Luminescence by Introducing Twisted Molecular Geometry for Understanding Neutrophil-Involved Diseases. J Am Chem Soc 2022; 144:3429-3441. [PMID: 35050608 DOI: 10.1021/jacs.1c11455] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Understanding the mechanism and progression of neutrophil-involved diseases (e.g., acute inflammation) is of great importance. However, current available analytical methods neither achieve the real-time monitoring nor provide dynamic information during the pathological processes. Herein, a peroxynitrite (ONOO-) and environmental pH dual-responsive afterglow luminescent nanoprobe is designed and synthesized. In the presence of ONOO- at physiological pH, the nanoprobes show activated near-infrared afterglow luminescence, whose intensity and lasting time can be highly enhanced by introducing the aggregation-induced emission (AIE) effect with a twisted molecular geometry into the system. In vivo studies using three diseased animal models demonstrate that the nanoprobes can sensitively reveal the development process of acute skin inflammation including infiltration of first arrived neutrophils and acidification initiating time, make a fast and accurate discrimination between allergy and inflammation, and rapidly screen the antitumor drugs capable of inducing immunogenic cell death. This work provides an alternative approach and advanced probes permitting precise disease monitoring in real time.
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Affiliation(s)
- Chao Chen
- Frontiers Science Center for Cell Responses, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Heqi Gao
- Frontiers Science Center for Cell Responses, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Hanlin Ou
- Frontiers Science Center for Cell Responses, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Ryan T K Kwok
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study, and Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Youhong Tang
- Australia-China Joint Centre for Personal Health Technologies, Medical Device Research Institute, Flinders University, South Australia 5042, Australia
| | - Donghui Zheng
- Department of Nephrology, Huai'an Hospital Affiliated to Xuzhou Medical College and Huai'an Second Hospital, Huai'an 223002, China
| | - Dan Ding
- Frontiers Science Center for Cell Responses, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, Tianjin 300071, China.,Department of Nephrology, Huai'an Hospital Affiliated to Xuzhou Medical College and Huai'an Second Hospital, Huai'an 223002, China
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12
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Matshitse R, Nwaji N, Managa M, Chen ZL, Nyokong T. Photodynamic therapy characteristics of phthalocyanines in the presence of boron doped detonation nanodiamonds: Effect of symmetry and charge. Photodiagnosis Photodyn Ther 2021; 37:102705. [PMID: 34954389 DOI: 10.1016/j.pdpdt.2021.102705] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 11/30/2022]
Abstract
The synthesis, photophysicochemical and photodynamic therapy (PDT) activity of benzothiazole substituted zinc phthalocyanine: 1 (asymmetrically substituted and composed of no charges), 2 (asymmetrically substituted and composed of three positive charges), and 3 (symmetrically substituted and composed of four positive charges), are presented. The triplet and singlet oxygen quantum yields were highest for complex 2 showing the importance of asymmetry and charge. The complexes are covalently and non-covalently linked to B doped detonation nanodiamonds (B@DNDs) to yield nanohybrids (B@DNDs-1, B@DNDs-2, B@DNDs-3). The presence of B@DNDs, asymmetry and positive charge resulted in improved PDT with the lowest cell viability being observed for B@DNDs-2 at 5%. The cell viability ranged from 5 to 7% for the nanohybrids compared to 19 to 26% for Pcs alone.
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Affiliation(s)
- Refilwe Matshitse
- Institute for Nanotechnology Innovation, Rhodes University, Makhanda, 6140, South Africa
| | - Njemuwa Nwaji
- Institute for Nanotechnology Innovation, Rhodes University, Makhanda, 6140, South Africa
| | - Muthumuni Managa
- Institute for Nanotechnology Innovation, Rhodes University, Makhanda, 6140, South Africa
| | - Zhi-Long Chen
- Department of Pharmaceutical Science & Technology, College of Chemistry and Biology, Donghua University, Shanghai, 201620, China
| | - Tebello Nyokong
- Institute for Nanotechnology Innovation, Rhodes University, Makhanda, 6140, South Africa.
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13
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Influence of progressive halogenation of Zn(II)-tetraarylporphyrins and their free bases on the structure and spectral-fluorescence properties of tetrapyrrolic macrocycle. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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14
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Synthesis, characterization, thermal and photophysical properties of novel strontium (II) phthalocyanine. J INCL PHENOM MACRO 2021. [DOI: 10.1007/s10847-021-01094-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Openda YI, Nyokong T. Enhanced photo-ablation effect of positively charged phthalocyanines-detonation nanodiamonds nanoplatforms for the suppression of Staphylococcus aureus and Escherichia coli planktonic cells and biofilms. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113200] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Openda YI, Ngoy BP, Nyokong T. Photodynamic Antimicrobial Action of Asymmetrical Porphyrins Functionalized Silver-Detonation Nanodiamonds Nanoplatforms for the Suppression of Staphylococcus aureus Planktonic Cells and Biofilms. Front Chem 2021; 9:628316. [PMID: 33777896 PMCID: PMC7991625 DOI: 10.3389/fchem.2021.628316] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 02/03/2021] [Indexed: 11/13/2022] Open
Abstract
New asymmetrical porphyrin derivatives containing a p-hydroxyphenyl moiety and p-acetylphenyl moieties along with their functionalized silver-detonation nanodiamonds nanohybrids were characterized and their photophysicochemical properties were established. The study provides evidence that the metalated porphyrin derivatives were red-shifted in absorption wavelength and possessed high singlet oxygen quantum yield comparative to the unmetalated core, thus making them suitable agents for photodynamic antimicrobial chemotherapy. As a result of conjugation to detonation nanodiamonds and silver nanoparticles, these compounds proved to be more effective as they exhibited stronger antibacterial and anti-biofilm activities on the multi-drug resistant S. aureus strain due to synergetic effect, compared to Ps alone. This suggests that the newly prepared nanohybrids could be used as a potential antimicrobial agent in the treatment of biofilms caused by S. aureus strain.
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Affiliation(s)
- Yolande I. Openda
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda, South Africa
| | - Bokolombe P. Ngoy
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda, South Africa
- Département de Chimie, Université de Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Tebello Nyokong
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda, South Africa
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17
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Buglak AA, Filatov MA, Hussain MA, Sugimoto M. Singlet oxygen generation by porphyrins and metalloporphyrins revisited: A quantitative structure-property relationship (QSPR) study. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112833] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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18
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Openda YI, Nyokong T. Detonation nanodiamonds-phthalocyanine photosensitizers with enhanced photophysicochemical properties and effective photoantibacterial activity. Photodiagnosis Photodyn Ther 2020; 32:102072. [PMID: 33130028 DOI: 10.1016/j.pdpdt.2020.102072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/05/2020] [Accepted: 10/19/2020] [Indexed: 01/09/2023]
Abstract
The nanophotosensitizers based on acetophenoxy tetrasubstituted metallophthalocyanines (MPc) and detonation nanodiamonds (DNDs) were successfully formed and their photophysicochemical properties were determined. The zinc(II)Pc and indium(III)Pc complexes along with their nanoconjugates were found to have high singlet oxygen quantum yields (0.72 - 0.84) associated with the heavy central metal effect. The ability of the functional groups present on the DNDs to bind to the bacteria cell and the improved solubility of the nanoconjugates due to DNDs resulted in effective photodynamic antimicrobial therapy (PACT) activity against S. aureus planktonic cells, with the highest log reduction of 9.72 ± 0.02 for the conjugate of InPc conjugate with DNDs after 30 min irradiation. PACT studies were investigated at a dose of 10 μg/mL for each sample. The results suggest that the readily synthesized nanoconjugates can be used as appropriate PACT agents.
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Affiliation(s)
- Yolande Ikala Openda
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda 6140, South Africa
| | - Tebello Nyokong
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda 6140, South Africa.
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19
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Openda YI, Matshitse R, Nyokong T. A search for enhanced photodynamic activity against Staphylococcus aureus planktonic cells and biofilms: the evaluation of phthalocyanine-detonation nanodiamond-Ag nanoconjugates. Photochem Photobiol Sci 2020; 19:1442-1454. [PMID: 33000851 DOI: 10.1039/d0pp00075b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The present work reports on the synthesis and characterization of novel zinc (2) and indium (3) 2-amino-4-bromophenoxy substituted phthalocyanines (Pcs) along with the self-assembled nanoconjugates formed viaπ-π stacking interaction onto detonation nanodiamonds (DNDs) to form 2@DNDs and 3@DNDs. 2@DNDs and 3@DNDs were covalently linked to chitosan-silver mediated nanoparticles (CSAg) to form 2@DNDs-CSAg and 3@DNDs-CSAg nanoconjugates. High singlet oxygen quantum yields in DMSO of 0.69 and 0.72 for Pcs alone and 0.90 and 0.92 for 2@DNDs-CSAg and 3@DNDs-CSAg, respectively, were obtained. The photodynamic antimicrobial chemotherapy (PACT) activity of both phthalocyanines and nanoconjugates was tested against planktonic cells and biofilms of S. aureus. 2@DNDs-CSAg and 3@DNDs-CSAg caused effective killing with a log reduction of 9.74. In addition, PACT studies on single-species S. aureus biofilms were carried out with log reduction values of 5.12 and 5.27 at 200 μg mL-1 for 2@DNDs-CSAg and 3@DNDs-CSAg, respectively.
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Affiliation(s)
- Yolande Ikala Openda
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda, 6140, South Africa.
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Delasoie J, Schiel P, Vojnovic S, Nikodinovic-Runic J, Zobi F. Photoactivatable Surface-Functionalized Diatom Microalgae for Colorectal Cancer Targeted Delivery and Enhanced Cytotoxicity of Anticancer Complexes. Pharmaceutics 2020; 12:E480. [PMID: 32466116 PMCID: PMC7285135 DOI: 10.3390/pharmaceutics12050480] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 02/06/2023] Open
Abstract
Systemic toxicity and severe side effects are commonly associated with anticancer chemotherapies. New strategies based on enhanced drug selectivity and targeted delivery to cancer cells while leaving healthy tissue undamaged can reduce the global patient burden. Herein, we report the design, synthesis and characterization of a bio-inspired hybrid multifunctional drug delivery system based on diatom microalgae. The microalgae's surface was chemically functionalized with hybrid vitamin B12-photoactivatable molecules and the materials further loaded with highly active rhenium(I) tricarbonyl anticancer complexes. The constructs showed enhanced adherence to colorectal cancer (CRC) cells and slow release of the chemotherapeutic drugs. The overall toxicity of the hybrid multifunctional drug delivery system was further enhanced by photoactivation of the microalgae surface. Depending on the construct and anticancer drug, a 2-fold increase in the cytotoxic efficacy of the drug was observed upon light irradiation. The use of this targeted drug delivery strategy, together with selective spatial-temporal light activation, may lead to lower effective concentration of anticancer drugs, thereby reducing medication doses, possible side effects and overall burden for the patient.
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Affiliation(s)
- Joachim Delasoie
- Department of Chemistry, Fribourg University, Chemin du Musée 9, 1700 Fribourg, Switzerland; (J.D.); (P.S.)
| | - Philippe Schiel
- Department of Chemistry, Fribourg University, Chemin du Musée 9, 1700 Fribourg, Switzerland; (J.D.); (P.S.)
| | - Sandra Vojnovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.V.); (J.N.-R.)
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (S.V.); (J.N.-R.)
| | - Fabio Zobi
- Department of Chemistry, Fribourg University, Chemin du Musée 9, 1700 Fribourg, Switzerland; (J.D.); (P.S.)
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Substituent effect on the photophysical and nonlinear optical characteristics of Si phthalocyanine – Detonated nanodiamond conjugated systems in solution. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119447] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Acetophenone substituted phthalocyanines and their graphene quantum dots conjugates as photosensitizers for photodynamic antimicrobial chemotherapy against Staphylococcus aureus. Photodiagnosis Photodyn Ther 2020; 29:101607. [DOI: 10.1016/j.pdpdt.2019.101607] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 11/18/2022]
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Excited-state investigations of meso-mono-substituted-(amino-ferrocenyl)porphyrins: Experimental and theoretical approaches. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.112048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Design of Phthalocyanine‐Nanoparticle Hybrids for Photodynamic Therapy Applications in Oxygen‐Deficient Tumour Environment. ChemistrySelect 2019. [DOI: 10.1002/slct.201901466] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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25
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Photophysical properties and in vitro photocytotoxicity of disodium salt 2.4-di(alpha-methoxyethyl)-deuteroporphyrin-IX (Dimegine). Photodiagnosis Photodyn Ther 2019; 25:35-42. [DOI: 10.1016/j.pdpdt.2018.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/24/2018] [Accepted: 11/05/2018] [Indexed: 02/05/2023]
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26
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Chen W, Song F, Tang S, Hong G, Wu Y, Peng X. Red-to-blue photon up-conversion with high efficiency based on a TADF fluorescein derivative. Chem Commun (Camb) 2019; 55:4375-4378. [DOI: 10.1039/c9cc01868a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new photon up-conversion system with a TADF fluorescein derivative as a photosensitizer was developed to achieve a quite large anti-Stokes shift from red to blue with a fairly high up-conversion emission quantum yield.
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Affiliation(s)
- Wenlong Chen
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
| | - Fengling Song
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
- Institute of Molecular Sciences and Engineering
| | - Shanliang Tang
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
| | - Gaobo Hong
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
| | - Yingnan Wu
- Institute of Molecular Sciences and Engineering
- Shandong University
- Qingdao 266237
- P. R. China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
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Managa M, Ngoy BP, Nyokong T. Photophysical properties and photodynamic therapy activity of ameso-tetra(4-carboxyphenyl)porphyrin tetramethyl ester–graphene quantum dot conjugate. NEW J CHEM 2019. [DOI: 10.1039/c8nj06175k] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ameso-tetra(4-carboxyphenyl)porphyrin tetramethyl ester and the Zn and GaCl derivatives were π–π stacked with graphene quantum dots to form conjugates and their photophysical and photodynamic therapy properties were investigated.
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Affiliation(s)
- Muthumuni Managa
- Centre for Nanotechnology Innovation
- Department of Chemistry
- Rhodes University
- Grahamstown 6140
- South Africa
| | - Bokolombe Pitchou Ngoy
- Centre for Nanotechnology Innovation
- Department of Chemistry
- Rhodes University
- Grahamstown 6140
- South Africa
| | - Tebello Nyokong
- Centre for Nanotechnology Innovation
- Department of Chemistry
- Rhodes University
- Grahamstown 6140
- South Africa
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Cocca LH, Gotardo F, Sciuti LF, Acunha TV, Iglesias BA, de Boni L. Investigation of excited singlet state absorption and intersystem crossing mechanism of isomeric meso-tetra(pyridyl)porphyrins containing peripheral polypyridyl platinum(II) complexes. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.07.061] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Wang LL, Peng SH, Wang H, Ji LN, Liu HY. Photophysical properties of free-base and manganese(iii) N-confused porphyrins. Phys Chem Chem Phys 2018; 20:20141-20148. [PMID: 30027945 DOI: 10.1039/c8cp02223b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The photophysical properties of N-confused 5,10,15,20-tetraphenyl porphyrin derivatives have been studied using steady-state and time-resolved spectroscopic techniques. The peripherally substituted N-confused 5,10,15,20-tetraphenyl free-base porphyrins (NCTPPs) show stronger B-band absorptions in DCM than in DMAc, while much stronger emissions have been observed in DMAc, which may be due to the shorter times (τIC) of internal conversion from the B-band to the Q-band. The Q-band spectral structures of NCTPPs in DCM are significantly different from those in DMAc. The introduction of ortho-OCH3 results in the strongest emission in both DCM and DMAc and significant fluorescence after N-methylation even though the emissions of other N-methyl complexes are quenched. The N-methylation of NCTPPs leads to a larger τIC and shorter emission lifetime. The excited-state dynamics of manganese(iii) N-confused porphyrins (Mn(Cl)NCH3NCTPPs) are influenced by both peripheral substituents and manganese(iii) metal ion, and exhibit ultrafast intersystem crossing processes.
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Affiliation(s)
- Li-Li Wang
- State Key Laboratory of Optoelectronics Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China.
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Matshitse R, Sekhosana KE, Achadu OJ, Nyokong T. Characterization and physicochemical studies of the conjugates of graphene quantum dots with differently charged zinc phthalocyanines. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1387652] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Refilwe Matshitse
- Department of Chemistry, Rhodes University, Grahamstown, South Africa
| | | | - Ojodomo J. Achadu
- Department of Chemistry, Rhodes University, Grahamstown, South Africa
| | - Tebello Nyokong
- Department of Chemistry, Rhodes University, Grahamstown, South Africa
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Gotardo F, Cocca LH, Acunha TV, Longoni A, Toldo J, Gonçalves PF, Iglesias BA, De Boni L. Investigating the intersystem crossing rate and triplet quantum yield of Protoporphyrin IX by means of pulse train fluorescence technique. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.02.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Synthesis, photophysical properties and spectroelectrochemical characterization of 10-(4-methyl-bipyridyl)-5,15-(pentafluorophenyl)corrole. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.09.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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