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Romero M, Sánchez-Valencia JR, Lozano G, Míguez H. Effect of the effective refractive index on the radiative decay rate in nanoparticle thin films. NANOSCALE 2023; 15:15279-15287. [PMID: 37676237 DOI: 10.1039/d3nr03348a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
In this work, we theoretically and experimentally study the influence of the optical environment on the radiative decay rate of rare-earth transitions in luminescent nanoparticles forming a thin film. We use electric dipole sources in finite-difference time-domain simulations to analyze the effect of modifying the effective refractive index of transparent layers made of phosphor nanocrystals doped with rare earth cations, and propose a correction to previously reported analytical models for calculating the radiative decay rate. Our predictions are tested against an experimental realization of such luminescent films, in which we manage to vary the effective refractive index in a gradual and controllable manner. Our model accurately accounts for the measurements attained, allows us to discriminate the radiative and non-radiative contributions to the time-resolved photoluminescence, and provides a way to rationally tune the spontaneous decay rate and hence the photoluminescence quantum yield in an ensemble of luminescent nanoparticles.
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Affiliation(s)
- Manuel Romero
- Institute of Materials Science of Seville, Spanish National Research Council - University of Seville, C. Américo Vespucio 49, 41092, Seville, Spain.
| | - Juan Ramón Sánchez-Valencia
- Institute of Materials Science of Seville, Spanish National Research Council - University of Seville, C. Américo Vespucio 49, 41092, Seville, Spain.
| | - Gabriel Lozano
- Institute of Materials Science of Seville, Spanish National Research Council - University of Seville, C. Américo Vespucio 49, 41092, Seville, Spain.
| | - Hernán Míguez
- Institute of Materials Science of Seville, Spanish National Research Council - University of Seville, C. Américo Vespucio 49, 41092, Seville, Spain.
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Yan X, Zhao K, Yang Y, Qiu A, Zhang X, Liu J, Zha C, Mai X, Ai F, Zheng X. Utilizing dual carriers assisted by enzyme digestion chemiluminescence signal enhancement strategy simultaneously detect tumor markers CEA and AFP. ANAL SCI 2022; 38:889-897. [PMID: 35403957 DOI: 10.1007/s44211-022-00109-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/12/2022] [Indexed: 11/26/2022]
Abstract
To measure two tumor biomarkers, alpha-fetoprotein (AFP) and carcinoembryonic antigen (CEA), a dual-carrier CL sensor with restriction enzyme digestion (Exo I) and aptamer technology utilizing gold nanoparticles (hydroxylamine amplification) and horseradish peroxidase (HRP) as the CL signal enhancement in the sensing strategy was formed. These nanoparticles and nano-enzyme were precisely detected and tagged to the appropriate position attributable to the particular recognition of biotin and streptavidin. In this sensing strategy, target markers were further enriched and recognized sensitively by CL following enrichment, and matching strong chemical signals were collected under luminol catalysis, allowing for marker identification. For CEA (0.1-80 ng/mL) and AFP (2-500 ng/mL), the proposed method has a large linear range, with detection limits of 36.6 pg/mL and 0.94 ng/mL, respectively.
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Affiliation(s)
- Xiluan Yan
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, People's Republic of China
- School of Pharmacy, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Kun Zhao
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Yunting Yang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Aojun Qiu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Xinlei Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Jie Liu
- School of Pharmacy, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Chengyi Zha
- Department of Pharmacy, The 3rd People's Hospital, Jingdezhen, 333000, China
| | - Xi Mai
- School of Pharmacy, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Fanrong Ai
- School of Mechanical & Electrical Engineering, Nanchang University, Nanchang, 330031, People's Republic of China
| | - Xiangjuan Zheng
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, People's Republic of China.
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Timofeeva II, Vakh CS, Bulatov AV, Worsfold PJ. Flow analysis with chemiluminescence detection: Recent advances and applications. Talanta 2017; 179:246-270. [PMID: 29310229 DOI: 10.1016/j.talanta.2017.11.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/03/2017] [Accepted: 11/04/2017] [Indexed: 10/18/2022]
Abstract
This article highlights the most important developments in flow analysis with chemiluminescence (CL) detection, describing different flow systems that are compatible with CL detection, detector designs, commonly applied CL reactions and approaches to sample treatment. Recent applications of flow analysis with CL detection (focusing on outputs published since 2010) are also presented. Applications are classified by sample matrix, covering foods and beverages, environmental matrices, pharmaceuticals and biological fluids. Comprehensive tables are provided for each area, listing the specific sample matrix, CL reaction used, linear range, limit of detection and sample treatment for each analyte. Finally, recent and emerging trends in the field are also discussed.
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Affiliation(s)
- Irina I Timofeeva
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskayanab., St. Petersburg 199034, Russia.
| | - Christina S Vakh
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskayanab., St. Petersburg 199034, Russia
| | - Andrey V Bulatov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskayanab., St. Petersburg 199034, Russia
| | - Paul J Worsfold
- School of Geography, Earth and Environmental Sciences and Biogeochemistry Research Centre, Plymouth University, Plymouth, Devon PL4 8AA, UK
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Investigation on the preparation and luminescence emission of LaF3:Eu3+@LaF3/SiO2 core-shell nanostructure. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Luo K, Li Y, Zheng X, Song Z. Pharmacokinetic of pseudoephedrine in rat serum with luminol-pepsin chemiluminescence system by flow injection analysis. Appl Biochem Biotechnol 2014; 175:1805-16. [PMID: 25427591 DOI: 10.1007/s12010-014-1396-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Accepted: 11/12/2014] [Indexed: 11/26/2022]
Abstract
Pepsin (Pep) accelerated the electron transferring rate of excited 3-aminophathlate and enhanced luminol-dissolved oxygen chemiluminescence (CL) intensity, and the flow injection (FI) luminol-Pep CL system was first developed. It was found that the CL intensity of luminol-Pep reaction could be remarkably inhibited by pseudoephedrine (PE); the decrement of CL intensity was linear to the logarithm of PE concentration in the range of 0.1∼100.0 nmol L(-1) with a detection limit of 0.03 nmol mL(-1) (3σ). At a flow rate of 2.0 mL min(-1), the complete process including washing and sampling was performed within 40 s, offering a sample throughput of 90 h(-1). This proposed method was successfully applied to determining PE in rat serum for 18 h after intragastric administration with the elimination ratio of 42.34 % and recoveries from 90.3 to 110.6 %. The pharmacokinetic results showed that PE could be rapidly absorbed into serum with peak concentration (C max) of 1.45 ± 0.18 g L(-1) at the time (T max) of 1.49 ± 0.02 h; the absorption half-life (0.35 ± 0.04 h), elimination half-life (1.86 ± 0.24 h), the area under curve (109.81 ± 6.03 mg L(-1) h(-1)), mean residence time (3.82 ± 0.27 h), and elimination rate constant (2.26 ± 0.23 L g(-1) h(-1)) in rats vivo were derived, respectively. The possible CL mechanism of luminol-Pep-PE reaction was discussed by FI-CL, fluorescence, and molecular docking (MD) methods.
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Affiliation(s)
- Kai Luo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi'an, 710069, China
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Iranifam M. Revisiting flow-chemiluminescence techniques: pharmaceutical analysis. LUMINESCENCE 2012; 28:798-820. [DOI: 10.1002/bio.2441] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Revised: 08/28/2012] [Accepted: 08/29/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Mortaza Iranifam
- Department of Chemistry, Faculty of Science; University of Maragheh; Maragheh East Azerbaijan Iran
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Wang L, Tang Y. Determination of dipyridamole using TCPO-H2O2 chemiluminescence in the presence of silver nanoparticles. LUMINESCENCE 2011; 26:703-9. [DOI: 10.1002/bio.1301] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 03/02/2011] [Accepted: 03/03/2011] [Indexed: 11/08/2022]
Affiliation(s)
| | - Yuhai Tang
- College of Science; Xi'an Jiaotong University; Xi'an; People's Republic of China
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