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Moustafa S, Almarashi JQM, Zayed MK, Almokhtar M, Rashad M, Fares H. Plasmon resonances of GZO core-Ag shell nanospheres, nanorods, and nanodisks for biosensing and biomedical applications in near-infrared biological windows I and II. Phys Chem Chem Phys 2024; 26:17817-17829. [PMID: 38884203 DOI: 10.1039/d4cp00817k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
There is currently a great deal of interest in realizing localized surface plasmon resonances (LSPRs) in two distinct windows in the near-infrared (NIR) spectrum for in vivo biosensing and medical applications, the biological window (BW) I and II (BW I, 700-900 nm; BW II, 1000-1700 nm). This study aims to demonstrate that LSPRs of Ga-doped ZnO (GZO) core-silver (Ag) shell structures exhibit promising features for biological applications in the NIR BW I and II. Here, we study three different shapes for nanoshells: the core-shell nanosphere, nanorod, and nanodisk. In the calculation of the optical response of these nanoshells, an effective medium approach is first used to reduce the dielectric function of a nanoshell to that of an equivalent homogenous NP with an effective dielectric function. Then, the LSPR spectra of nanoshells are calculated using the modified long-wavelength approximation (MLWA), which corrects the polarizability of the equivalent NP as obtained by Gans theory. Through numerical investigations, we examine the impacts of the core and shell sizes of the proposed nanoshells as well as the medium refractive index on the position and line width of the plasmon resonance peaks. It is shown that the plasmon resonances of the three proposed nanoshells exhibit astonishing resonance tunability in the NIR region by varying their geometrical parameters. Specifically, the improved spectrum characteristics and tunability of its plasmon resonances make the GZO-Ag nanosphere a more viable platform for NIR applications than the spherical metal colloid. Furthermore, we demonstrate that the sensitivity and figure of merit (FOM) of the plasmon resonances may be significantly increased by using GZO-Ag nanorods and nanodisks in place of GZO-Ag nanospheres. It is found that the optical properties of the transverse plasmon resonance of the GZO-Ag nanodisk are superior to all plasmon resonances produced by the GZO-Ag nanorods and GZO-Ag nanospheres in terms of sensitivity and FOM. The FOM of the transverse plasmon mode of the GZO-Ag nanodisk is almost two orders of magnitude higher than that of the longitudinal and transverse plasmon modes of the GZO-Ag nanorod in BW I and BW II. And it is 1.5 and 2 times higher than the plasmon resonance FOM of GZO-Ag nanospheres in BW I and BW II, respectively.
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Affiliation(s)
- Samar Moustafa
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
- Department of Physics, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Jamal Q M Almarashi
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
| | - Mohamed K Zayed
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
- Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 6111, Egypt
| | - Mohamed Almokhtar
- Department of Physics, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Mohamed Rashad
- Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Hesham Fares
- Physics Department, College of Science, Taibah University, P. O. Box 30002, Medina, Saudi Arabia.
- Department of Physics, Faculty of Science, Assiut University, Assiut 71516, Egypt
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Liu J, Yang F, Hu J, Zhang X. Nanoparticles for efficient drug delivery and drug resistance in glioma: New perspectives. CNS Neurosci Ther 2024; 30:e14715. [PMID: 38708806 PMCID: PMC11071172 DOI: 10.1111/cns.14715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/24/2024] [Accepted: 03/27/2024] [Indexed: 05/07/2024] Open
Abstract
Gliomas are the most common primary tumors of the central nervous system, with glioblastoma multiforme (GBM) having the highest incidence, and their therapeutic efficacy depends primarily on the extent of surgical resection and the efficacy of postoperative chemotherapy. The role of the intracranial blood-brain barrier and the occurrence of the drug-resistant gene O6-methylguanine-DNA methyltransferase have greatly limited the efficacy of chemotherapeutic agents in patients with GBM and made it difficult to achieve the expected clinical response. In recent years, the rapid development of nanotechnology has brought new hope for the treatment of tumors. Nanoparticles (NPs) have shown great potential in tumor therapy due to their unique properties such as light, heat, electromagnetic effects, and passive targeting. Furthermore, NPs can effectively load chemotherapeutic drugs, significantly reduce the side effects of chemotherapeutic drugs, and improve chemotherapeutic efficacy, showing great potential in the chemotherapy of glioma. In this article, we reviewed the mechanisms of glioma drug resistance, the physicochemical properties of NPs, and recent advances in NPs in glioma chemotherapy resistance. We aimed to provide new perspectives on the clinical treatment of glioma.
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Affiliation(s)
- Jiyuan Liu
- Department of Neurosurgerythe First Hospital of China Medical UniversityShenyangChina
| | - Fan Yang
- Department of Cardiologythe Fourth Affiliated Hospital of China Medical UniversityShenyangChina
| | - Jinqu Hu
- Department of Neurosurgerythe First Hospital of China Medical UniversityShenyangChina
| | - Xiuchun Zhang
- Department of Neurologythe First Hospital of China Medical UniversityShenyangChina
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Jumbo-Nogales A, Rao A, Olejniczak A, Grzelczak M, Rakovich Y. Unveiling the Synergy of Coupled Gold Nanoparticles and J-Aggregates in Plexcitonic Systems for Enhanced Photochemical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:35. [PMID: 38202491 PMCID: PMC10780452 DOI: 10.3390/nano14010035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/06/2023] [Accepted: 12/17/2023] [Indexed: 01/12/2024]
Abstract
Plexcitonic systems based on metal nanostructures and molecular J-aggregates offer an excellent opportunity to explore the intriguing interplay between plasmonic excitations and excitons, offering unique insights into light-matter interactions at the nanoscale. Their potential applications in photocatalysis have prompted a growing interest in both their synthesis and the analysis of their properties. However, in order to construct a high-performing system, it is essential to ensure chemical and spectral compatibility between both components. We present the results of a study into a hybrid system, achieved through the coupling of gold nanobipyramids with organic molecules, and demonstrate the strengthened photochemical properties of such a system in comparison with purely J-aggregates. Our analysis includes the absorbance and photoluminescence characterization of the system, revealing the remarkable plexcitonic interaction and pronounced coupling effect. The absorbance spectroscopy of the hybrid systems enabled the investigation of the coupling strength (g). Additionally, the photoluminescence response of the J-aggregates and coupled systems reveals the impact of the coupling regime. Utilizing fluorescence lifetime imaging microscopy, we established how the photoluminescence lifetime components of the J-aggregates are affected within the plexcitonic system. Finally, to assess the photodegradation of J-aggregates and plexcitonic systems, we conducted a comparative analysis. Our findings reveal that plasmon-enhanced interactions lead to improved photostability in hybrid systems.
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Affiliation(s)
- Alba Jumbo-Nogales
- Centro de Física de Materiales (MPC, CSIC-UPV/EHU), 20018 San Sebastián, Spain; (A.J.-N.); (A.R.); (A.O.); (M.G.)
| | - Anish Rao
- Centro de Física de Materiales (MPC, CSIC-UPV/EHU), 20018 San Sebastián, Spain; (A.J.-N.); (A.R.); (A.O.); (M.G.)
| | - Adam Olejniczak
- Centro de Física de Materiales (MPC, CSIC-UPV/EHU), 20018 San Sebastián, Spain; (A.J.-N.); (A.R.); (A.O.); (M.G.)
| | - Marek Grzelczak
- Centro de Física de Materiales (MPC, CSIC-UPV/EHU), 20018 San Sebastián, Spain; (A.J.-N.); (A.R.); (A.O.); (M.G.)
- Donostia International Physics Center (DIPC), 20018 San Sebastián, Spain
| | - Yury Rakovich
- Centro de Física de Materiales (MPC, CSIC-UPV/EHU), 20018 San Sebastián, Spain; (A.J.-N.); (A.R.); (A.O.); (M.G.)
- Donostia International Physics Center (DIPC), 20018 San Sebastián, Spain
- Polymers and Materials, Physics, Chemistry and Technology, Chemistry Faculty, University of the Basque Country (UPV/EHU), 20018 San Sebastián, Spain
- Ikerbasque Basque Foundation for Science, 48013 Bilbao, Spain
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