Controlled wet chemical synthesis of gold nanorods for triclopyr butotyl herbicide detection based-plasmonic sensor

An'Nisa, Nur Zehan; Morsin, Marlia; Sanudin, Rahmat; Razali, Nur Liyana; Nafisah, Suratun

doi:10.1016/j.sbsr.2020.100359

Cited by 3 publications

(4 citation statements)

References 35 publications

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“…1. This component setup refers to previous research on herbicide detection using gold nanorods [16]. In contrast, for detecting formaldehyde, boric acid, and glyphosate, the duplex fiber optic type was used to have a different setup [5].…”

Section: Plasmonic Sensor Setupmentioning

confidence: 99%

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Thiol Functionalized Gold Nanobipyramids-Based Plasmonic Sensor for Glucose Detection

Salsabiila,

Morsin,

Hasbullah

et al. 2024

IIUMEJ

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Gold nanobipyramids (GNBPs) have high selectivity in detecting changes in their surrounding medium because of their electric field enhancements and larger surface areas. In this study, we functionalized GNBPs using a thiol group that acts as a ligand to improve the detection performance of the analytes. The investigation is carried out by varying the functionalization periods from 12 to 72 hours. The optimum thiol-functionalized GNBPs (t-GNBPs) are obtained in 60 hours, with a length of 36.84 ± 2.05 nm, a width of 24.02 ± 0.74 nm, and an aspect ratio of 1.54 ± 0.11. Then, the optimum t-GNBPs are used as a sensing material in a plasmonic sensor to detect glucose. The limit of detection (LoD) of glucose is 1 µM for this sensor. The plasmonic sensor has been successfully built with reliable performance in detecting glucose with excellent linearity, sensitivity and R2 = 1; good selectivity compared to four similar chemical structure analytes; high stability with a low error value, i.e., ± 0.02 a.u.; and almost consistent repeatability values in each cycle with low percent variance of 0.000025% for the t-SPR area and 0.000032% for the l-SPR area. Therefore, a plasmonic sensor based on t-GNBPs is an alternative method of detecting glucose with high sensitivity, selectivity and repeatability. ABSTRAK: Nanobipiramid Emas (GNBPs) memiliki selektiviti yang tinggi dalam mengesan perubahan medium sekitar kerana memiliki peningkatan medan elektrik dan luas permukaan yang besar. Kajian ini merupakan fungsionalisasi terhadap GNBPs dengan menggunakan kumpulan thiol sebagai ligan bagi meningkatkan prestasi pengesanan analit. Kajian ini dilakukan dengan mempelbagaikan tempoh masa fungsionalisasi dalam julat waktu 12 hingga 72 jam. GNBPs optimum yang difungsionalisasi oleh thiol (t-GNBPs) diperoleh pada 60 jam, dengan panjang 36.84 ± 2.05 nm, lebar 24.02 ± 0.74 nm, dan nisbah aspek 1.54 ± 0.11. Kemudian, t-GNBPs optimum digunakan sebagai bahan penderia pada sensor plasmonik bagi mengesan glukosa. Limit pengesanan glukosa (LoD) bagi sensor ini adalah sebanyak 100 µM. Sensor plasmonik telah berhasil dibangunkan dengan kecekapan boleh percaya dalam mengesan glukosa dengan lineariti dan sensitiviti sebanyak R2 = 1. Pemilihan yang baik dibandingkan dengan 4 analit yang sama dari segi struktur kimia. Kestabilan yang tinggi dengan nilai ralat rendah iaitu ± 0.02 a.u, dan memiliki nilai keberulangan yang hampir konsisten pada setiap kitar dengan peratusan varian rendah iaitu sebanyak 0.000025% bagi bahagian t-SPR dan 0.000032% bagi l-SPR. Oleh itu, pengesan plasmonik berdasarkan t-GNBPs ini adalah kaedah alternatif bagi mengesan glukosa dengan sensitiviti, selektiviti, dan kebolehulangan yang tinggi.

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Section: Plasmonic Sensor Setupmentioning

confidence: 99%

“…The aspect ratio is the ratio between the length and width of the nanomaterial. Meanwhile, the surface density is the ratio between the area covered by t-GNBPs and the entire area [16]. The analysis and calculations were done using ImageJ Software, as shown in Table 3.…”

Section: Effect Of Thiol Functionalization On Gnbpsmentioning

confidence: 99%

Thiol Functionalized Gold Nanobipyramids-Based Plasmonic Sensor for Glucose Detection

Salsabiila,

Morsin,

Hasbullah

et al. 2024

IIUMEJ

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“…This configuration consists of a similar instrument to the previous configuration but differs in setup style because of different fiber optics. For example, in herbicide detection using gold nanorods, an absorption method also consists of a light source, fiber optic, chamber, spectrometer, and computer to analyze the spectrum absorbance [61]. The schematic setup is shown in Fig.…”

Section: ∆𝜆𝜆mentioning

confidence: 99%

Mini Review of Glucose Detection Using Plasmonic Sensor

Salsabiila,

Morsin,

Nafisah

et al. 2023

EmAIT

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Glucose is a crucial compound in human life. Glucose has important roles in energy source production and overall brain health. In addition, it can be converted into other compounds essential for the growth, repair, and maintaining tissues throughout the body. Also, glucose becomes an indicator of diabetes, i.e., ill when the body can not produce insulin hormone properly. The poor management of diabetes can affect long-term complications that can significantly impact a person's quality of life and may lead to disability or even premature death if not properly addressed. Thus, it is important to do glucose detection to stay within a healthy range. The common methods patients use are glucose meters and urine testing on the laboratory scale. This method has several areas for improvement, such as being invasive, needing experts, and requiring a long-time detection. Thus, researchers come into various alternative glucose detection such as chromatography, mass spectrometry, electrochemical, and plasmonic sensor. Chromatography for glucose detection is rarely used in recent years because of its complexity. Then, for mass spectrometry, it is also complicated for the result and maintenance. As for electrochemical methods, the disadvantage is that other electroactive components on the sample can be interfered with. Plasmonic sensors that utilize the Localized Surface Plasmon Resonance (LSPR) phenomenon are considered due to their advantage, i.e., non-invasive, real-time monitoring, and highly sensitive to surrounding medium change. Plasmonic sensors usually use components of light absorption, luminescence, fluorescence, Raman scattering, reflectance, and refractive indexbased on the nanoparticles used as sensing materials. Still, transmission and reflection are popular and widely applied. Furthermore, plasmonic sensors generally consist of instruments such as a light source, fiber optic, chamber to place substrate/analyte, spectrometer/detector, and computer. Besides, plasmonic sensors can produce different analytical characteristics suitable for different cases and tuned for the need because of the various sensing materials used. Hence, plasmonic sensors become a promising alternative method for glucose detection.

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“…When excited with light, the free electrons in the plasmonic metal are collectively oscillated in responding to the electric field of the incident light and generate an intense localized plasmonic field that strongly depends on the metal's structure, size, and the dielectric constant of the surrounding medium. Therefore, huge attention has been paid to the fabrication techniques to control the plasmonic structures and ultimately their optical responses such as electron beam lithography (10), focused ion beam milling (11), laser interference lithography (12), furnace annealing (13) and wet chemical synthesis (14).…”

Section: Introductionmentioning

confidence: 99%

Laser Annealing of Gold Thin Films as a Platform for Plasmonic Sensing Applications

2022

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The future of the plasmonic devices is heavily challenged by the nanoconstruction schemes of metals which often require rather fast, low-cost, and high-throughput fabrication techniques. Laser annealing is considered to be an unrivaled tool for surface manipulation of thin metallic films, especially with functional plasmonic devices of pre-determined morphology. Herein, a commercial CW CO2 laser, wavelength of 10.6 µm and optimum power of 15W, has been used for surface reconstruction of thin Au films, with an initial film thickness of 15 nm (±3 nm) sputtered on quartz substrates, as plasmonic sensing platforms. The effect of two main laser parameters on the Au film morphology have been explored namely power density and scanning speed. Thermal annealing of Au nanostructured films by the electrical furnace is also been studied. UV-Visible (UV-Vis) spectroscopy characterization measurements is utilized to monitor the the plasmonic induced optical absorption changes with different experimental conditions. Surface annealed Au nanofilms were then used as a plasmonic sensing substrate to detect the size and density variation of Ag NPs, fabricated by pulsed Nd: YAG laser ablation, ith pulse duration of 7 nsec, in DI water with a wavelength of 1064 nm and different laser energies, imbedded in a solution-processed thin dielectric material (CeO2 NPs) to form a composite film. Our plasmonic sensing structure shows a remarkable detection to variable concentrations of Ag NPs reflected by a significant red-shift in the plasmonic resonance absorption of Au nanostructures with laser ablation energy at a fixed number of pulses of 50 (1Hz).

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Controlled wet chemical synthesis of gold nanorods for triclopyr butotyl herbicide detection based-plasmonic sensor

Cited by 3 publications

References 35 publications

Thiol Functionalized Gold Nanobipyramids-Based Plasmonic Sensor for Glucose Detection

Thiol Functionalized Gold Nanobipyramids-Based Plasmonic Sensor for Glucose Detection

Mini Review of Glucose Detection Using Plasmonic Sensor

Laser Annealing of Gold Thin Films as a Platform for Plasmonic Sensing Applications

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