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Santosa, Sri Juari; Tanaka, Shigeru; Yamanaka, Kazuo

doi:10.1023/a:1005782500773

Cited by 10 publications

(4 citation statements)

References 13 publications

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“…The detection of Fe 3+ has garnered significant attention, underpinning pivotal advancements across diverse scientific and technological fields including synthetic chemistry [1] , biological imaging [2,3] , and food safety analytics [4,5] . There is a pressing demand for adept methodologies to monitor Fe 3+ both in vivo and in vitro.…”

Section: Introductionmentioning

confidence: 99%

A highly sensitive ratiometric near-infrared nanosensor based on erbium-hyperdoped silicon quantum dots for iron(Ⅲ) detection

Wang,

Lai,

et al. 2024

J. Semicond.

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Ratiometric fluorescent detection of iron(Ⅲ) (Fe3+) offers inherent self-calibration and contactless analytic capabilities. However, realizing a dual-emission near-infrared (NIR) nanosensor with a low limit of detection (LOD) is rather challenging. In this work, we report the synthesis of water-dispersible erbium-hyperdoped silicon quantum dots (Si QDs:Er), which emit NIR light at the wavelengths of 810 and 1540 nm. A dual-emission NIR nanosensor based on water-dispersible Si QDs:Er enables ratiometric Fe3+ detection with a very low LOD (0.06 μM). The effects of pH, recyclability, and the interplay between static and dynamic quenching mechanisms for Fe3+ detection have been systematically studied. In addition, we demonstrate that the nanosensor may be used to construct a sequential logic circuit with memory functions.

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Section: Introductionmentioning

confidence: 99%

A highly sensitive ratiometric near-infrared nanosensor based on erbium-hyperdoped silicon quantum dots for iron(Ⅲ) detection

Wang,

Lai,

et al. 2024

J. Semicond.

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“…3 To monitor and minimize the harm of excess Cu 2+ , the development of simple, sensitive and selective analytical tools for analyzing Cu 2+ are urgently needed. The traditional analytical protocols such as atomic absorption spectrometry 4 and inductively coupled plasma mass spectrometry 5 have been used as the most common methods for sensitive Cu 2+ detection. However, these methods require sophisticated instruments, elaborate sample pretreatment and professional training to operate.…”

Section: Introductionmentioning

confidence: 99%

A label-free fluorescent molecular switch for Cu2+ based on metal ion-triggered DNA-cleaving DNAzyme and DNA intercalator

Zhang

Wei

et al. 2013

New J. Chem.

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“…Traditional analytical protocols such as atomic absorption spectrometry (AAS) 2 and inductively coupled plasma mass spectrometry (ICP-MS) 3 have been the most commonly used methods for the detection of heavy metal ions. Although these methods are sensitive, they still have some limitations, such as the requirement for extensive and large equipment and complicated sample preparation.…”

Section: Introductionmentioning

confidence: 99%

Label-free DNA sensor for Pb2+ based on a duplex–quadruplex exchange

Zhang

et al. 2013

Anal. Methods

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A simple label-free Pb 2+ fluorescent aptasensor was proposed in this work. It is known that SYBR Green1 can embed into double-stranded DNA resulting in fluorescence enhancement, but it cannot bind to the G-quadruplex formed by Pb 2+ and PS2.M. In the absence of Pb 2+ , SYBR Green1 intercalated into the double-stranded DNA hybridized between PS2.M and its complementary strand and the fluorescence was greatly enhanced. In the presence of Pb 2+ , a compact G-quadruplex structure was formed and the double-stranded structure was destroyed, releasing SYBR Green1 and causing the fluorescence intensity to significantly decrease. The detection limit of the sensor was as low as 3 nM. This proposed assay strategy was a low-cost detection method for Pb 2+ with high sensitivity and good selectivity.

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Untitled

Cited by 10 publications

References 13 publications

A highly sensitive ratiometric near-infrared nanosensor based on erbium-hyperdoped silicon quantum dots for iron(Ⅲ) detection

A highly sensitive ratiometric near-infrared nanosensor based on erbium-hyperdoped silicon quantum dots for iron(Ⅲ) detection

A label-free fluorescent molecular switch for Cu2+ based on metal ion-triggered DNA-cleaving DNAzyme and DNA intercalator

Label-free DNA sensor for Pb2+ based on a duplex–quadruplex exchange

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