Indirect approach for CN− detection via Cu2+ induced turn-off sensor: Using novel AIEE fluorophore with logic gate and antimicrobial application

Maurya, Nirma; Singh, Ashok Kumar

doi:10.1016/j.dyepig.2017.08.046

Cited by 26 publications

(7 citation statements)

References 43 publications

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“…[12][13][14] However, most of them are based on "turn-off" changes in uorescence intensity because Cu 2+ is usually used as a uorescent quencher via an energy or electron-transfer mechanism. [15][16][17][18] Therefore, the sensitive "turn-on" uorescent sensors to monitor and visualize Cu 2+ are highly demanded.…”

Section: Introductionmentioning

confidence: 99%

A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu²⁺ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

et al. 2019

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Section: Introductionmentioning

confidence: 99%

A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu²⁺ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

et al. 2019

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“…As a result, the cell membrane permeability increased, and the intra cellular components leaked out, leading to the death of fungi. Singh's group from India found that chromone S1 with both ESIPT and aggregation-induced emission enhancement (AIEE) property, could also be applied for fungi killing115. The supramolecular aggregates of S1 underwent disaggregation in the presence of Cu 2+ with decrease in fluorescence intensity.…”

Section: Fungal Discrimination and Killingmentioning

confidence: 99%

AIE-based theranostic systems for detection and killing of pathogens

He¹,

Xiong²,

Zhao³

et al. 2019

Theranostics

129

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Pathogenic bacteria, fungi and viruses pose serious threats to the human health under appropriate conditions. There are many rapid and sensitive approaches have been developed for identification and quantification of specific pathogens, but many challenges still exist. Culture/colony counting and polymerase chain reaction are the classical methods used for pathogen detection, but their operations are time-consuming and laborious. On the other hand, the emergence and rapid spread of multidrug-resistant pathogens is another global threat. It is thus of utmost urgency to develop new therapeutic agents or strategies. Luminogens with aggregation-induced emission (AIEgens) and their derived supramolecular systems with unique optical properties have been developed as fluorescent probes for turn-on sensing of pathogens with high sensitivity and specificity. In addition, AIE-based supramolecular nanostructures exhibit excellent photodynamic inactivation (PDI) activity in aggregate, offering great potential for not only light-up diagnosis of pathogen, but also image-guided PDI therapy for pathogenic infection.

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“…Recently, the selective detection of trace Cu 2+ through fluorescence techniques has aroused great interest in many areas . The fluorescence analysis method is the most efficient way to detect low concentrations of Cu 2+ …”

Section: Introductionmentioning

confidence: 99%

“…The fluorescence probes have important effect for fluorescence sensors . Organic probes and nanomaterial probes are the two main fluorescence probes used to date.…”

Section: Introductionmentioning

confidence: 99%

Ratiometric fluorescent detection of Cu²⁺ based on dual‐emission ZIF‐8@rhodamine‐B nanocomposites

et al. 2019

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Zeolitic imidazolate framework-8 (ZIF-8) loading rhodamine-B (ZIF-8@rhodamine-B) nanocomposites was proposed and used as ratiometric fluorescent sensor to detect copper(II) ion (Cu 2+ ). Scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, nitrogen adsorption/desorption isotherms and fluorescence emission spectroscopy were employed to characterize the ZIF-8@rhodamine-B nanocomposites. The results showed the rhodamine-B was successfully assembled on ZIF-8 based on the π-π interaction and the hydrogen bond between the nitrogen atom of ZIF-8 and -COOH of rhodamine-B. The as-obtained ZIF-8@rhodamine-B nanocomposites were octahedron with size about 150-200 nm, had good water dispersion, and exhibited the characteristic fluorescence emission of ZIF-8 at 335 nm and rhodamine-B at 575 nm. The Cu 2+ could quench fluorescence of ZIF-8 rather than rhodamine-B. The ZIF-8 not only acted as the template to assemble rhodamine-B, but also was employed as the signal fluorescence together with the fluorescence of rhodamine-B as the reference to construct a novel ratiometric fluorescent sensor to detect Cu 2+ . The resulted ZIF-8@rhodamine-B nanocomposite fluorescence probe showed good linear range (68.4 nM to 125 μM) with a low detection limit (22.8 nM) for Cu 2+ combined with good sensitivity and selectivity. The work also provides a better way to design ratiometric fluorescent sensors from ZIF-8 and other fluorescent molecules. KEYWORDSCu 2 + , ratiometric fluorescent sensor, rhodamine-B, zeolitic imidazolate framework-8 biotoxicity, poor aqueous solubility and stability, etc. Nanomaterial fluorescent probes, especially the metal-organic frameworks (MOFs) or zeolitic imidazolate framework-8 (ZIF-8) based probes, are attracting more and more interest and are used for different applications due to their predictable pore sizes, considerable specific surface area, good encapsulation and hierarchical structures. [35][36][37][38][39] For example, carbon dots (CDs)@MOFs have been prepared to enhance fluorescence sensing. [40] A ratiometric type fluorescence sensor has two or more emission wavelengths, and the target content is usually quantified based on the relationship between the ratio of fluorescence intensities at two wavelengths and the concentration of the analyte. At the same time, this sensor mode enhances the dynamic response range by adjusting the change of intensity ratio, and establishes an internal standard to make it self-regulating, greatly weakening the effect some experimental conditions such as probe concentration, temperature, polarity, environmental pH, and stability. These experimental conditions are usually difficult to control in the experimental process. Moreover, as the concentration of analyte changes, the color of the ratio probe changes step-by-step, thereby enabling visual detection of the analyte, and semi-quantitative and qualitative analysis of the analyte can be achieved depending on the color of the ratio probe. [41,42] Therefore, the construction of rati...

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Indirect approach for CN− detection via Cu2+ induced turn-off sensor: Using novel AIEE fluorophore with logic gate and antimicrobial application

Cited by 26 publications

References 43 publications

A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu²⁺ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu²⁺ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

AIE-based theranostic systems for detection and killing of pathogens

Ratiometric fluorescent detection of Cu²⁺ based on dual‐emission ZIF‐8@rhodamine‐B nanocomposites

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Indirect approach for CN− detection via Cu2+ induced turn-off sensor: Using novel AIEE fluorophore with logic gate and antimicrobial application

Cited by 26 publications

References 43 publications

A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu2+ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu2+ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

AIE-based theranostic systems for detection and killing of pathogens

Ratiometric fluorescent detection of Cu2+ based on dual‐emission ZIF‐8@rhodamine‐B nanocomposites

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A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu²⁺ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

A colorimetric and ratiometric fluorescent sensor for sequentially detecting Cu²⁺ and arginine based on a coumarin–rhodamine B derivative and its application for bioimaging

Ratiometric fluorescent detection of Cu²⁺ based on dual‐emission ZIF‐8@rhodamine‐B nanocomposites