Fluorescence turn-on chemosensors based on surface-functionalized MoS2 quantum dots

Lin, Tsung Yi; Dhenadhayalan, Namasivayam; Lee, Hsin-Lung; Lin, Yih-Tyng; Lin, Kui; Chang, Agnes H. H.

doi:10.1016/j.snb.2018.11.009

Cited by 42 publications

(25 citation statements)

References 74 publications

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“…More importantly, there is a broad absorption at 370-450 nm, which provides conditions for the construction of fluorescence resonance energy transfer (FRET) system. The absorption spectrum of the prepared MoS2 QDs showed no absorption peak from 500 to 600 nm, this characteristic agrees with the result reported before (Lin, et al, 2019).…”

Section: Characterizations Of Prepared Materialssupporting

confidence: 92%

Visual detection of nitrite in sausage based on a ratiometric fluorescent system

Shi

et al. 2019

Food Control

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Section: Characterizations Of Prepared Materialssupporting

confidence: 92%

Visual detection of nitrite in sausage based on a ratiometric fluorescent system

Shi

et al. 2019

Food Control

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“…As shown in Figure d, the fluorescence response 1/( F − F 0 ) was plotted against 1/[Ni 2+ ], where F 0 and F are the fluorescence intensity of Pd/C‐dots in the absence and presence of the metal ion (Ni 2+ ), respectively. The resultant B–H plot displays the linearity which confirms the 1:1 stoichiometry between the Pd/C‐dots and Ni 2+ . In addition, the association constant was determined from the B–H plot via a ratio of the intercept to slope values, thus yielding the association constant of 1.15 × 10 7 M −1 .…”

Section: Resultsmentioning

confidence: 60%

“…Initially, the fluorescence increases dramatically in the lower concentration of Ni 2+ ion until saturation is reached at above 20 × 10 −6 m . Thus, the detection limit was determined from the fluorescence responses at lower concentrations of Ni 2+ ion by using the relation of 3(σ/slope), where σ is the standard deviation of the fluorescence response . The slope was obtained from the linear plot as shown in Figure c, thereby the detection limit of Ni 2+ was calculated to be 7.26 × 10 −9 m .…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications

Dhenadhayalan

Hsin

Lin

2019

Adv Materials Inter

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and textile. [2,7] It can be readily bound to biomolecules and consequently used as a strain to tissue and cells. [8] However, the application of abnormal level of EY becomes toxic and unfriendly to both the environment and living things. The development of reduction/degradation of nitro compound and dye is thus much needed to convert these materials into harmless products. For instance, the 4-NP and EY could be catalytically reduced into the formation of 4-aminophenol and reduced form of EY, respectively, and believe that this process could become potentially an effective way to treat 4-NP and EY in polluted water. Accordingly, the design and development of proficient catalyst are a significant task for the catalytic reduction of 4-NP and EY with aspects of the efficient and fast process. The nanomaterial-based catalysts are enormously developed for their superior catalytic performance in the reduction of pollutants. [9][10][11][12][13] In general, metal nanoparticles are usually adopted for the catalysis application; especially palladium nanoparticles (Pd NPs) exhibited excellent catalytic activities. [14][15][16] Such metal nanoparticles play a vital role in the catalytic reduction showing effective performance compared to other bare nanomaterials. In order to further improve their catalytic activity, the metal nanoparticles were incorporated with diverse nanomaterials including carbon-based materials, transition metal dichalcogenides (TMD), and porous organic cages. [17][18][19][20][21][22][23][24][25] Compared to other fluorescent nanomaterials, the C-dots can be easily synthesized from different kind of sources including organic molecules, biowastes, proteins, amino acids, and so on. [26][27][28][29][30][31][32] Moreover, the surface of C-dots can be modified with several capping agents to improve their fluorescence properties according to the applications. [33][34][35][36][37] That's why the C-dots have been extensively utilized in the fields of chemo-and biosensors, and optoelectronic applications. Thus far, the C-dots are much less utilized in the catalysis as in the sensing application. By taking advantage of C-dots and Pd NPs, this work aims to develop a superior multifunctional nanohybrid in the multiple applications including chemical sensor and catalysis.With this intention, we have synthesized carbon-dots to encapsulate palladium nanoparticles (Pd/C-dots) by the photochemical method. Prior to the synthesis of Pd/C-dots, Palladium nanoparticles encapsulated in the carbon dots (Pd/C-dots) are demonstrated to play a role of multifunctional nanohybrid in the synergetic applications of sensor and catalysis. The photochemical method is applied to synthesize Pd/C-dots in which Pd nanoparticles (NPs) are dispersedly encapsulated by C-dots layer. The nanohybrid can function as a fluorescent sensor and reductive catalyst, due to the inherent properties of C-dots and Pd NPs, respectively. The Pd/C-dots exhibit a highly selective and sensitive detection toward the nickel (Ni 2+ ) ion with a detection limit of ...

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“…To enhance MoS 2 -based nanocomposites performance for biosensing, − hybridization or functionalization with various moieties is the most fascinating strategy . Biosensing − of MoS 2 -based nanomaterials has achieved great progress in many biomedical applications, including specific detection, , bioimaging, − disease diagnostics, , real time, tracing, environmental monitoring, electrochemical detection, ,, catalysis, and so on. − Some widely used technologies, such as rolling circle amplification (RCA) and polymerase chain reaction (PCR), have many shortcomings within the process of targeting and signal amplification. Researchers have been seeking for proper fluorescent probes, which have high selectivity and sensitivity as sensing platforms for the detection of biomolecules, which mostly rely on the fluorescence resonance energy transfer (FRET) .…”

Section: Functionalized Mos2-based Nanomaterials For Other Biomedical...mentioning

confidence: 99%

Functionalized MoS₂-Based Nanomaterials for Cancer Phototherapy and Other Biomedical Applications

Zhu

Wang

et al. 2021

ACS Materials Lett.

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Transition-metal dichalcogenides (TMDs), as a novel category of nanomaterials and a potential alternate to graphene, are attracting great interest of researchers, because of their strong conductivity, superior catalytic performance, and good optical properties. As the most representative type of all TMDs, molybdenum disulfide (MoS 2 )-based nanomaterials are expanded into two-dimensional (2D) nanosheets, quantum dots (QDs), flower-like nanoparticles, nanospheres and nanotubes. These types are regarded as promising nanoplatforms for various applications in biomedicine, such as drug delivery, phototherapy, biosensing, bioimaging, theranostics, and antimicrobials, because of the unique planar structures, superb electronic and optical properties (such as thickness-dependent bandgap, strong near-infrared absorbance, and large surface area), and easily functionalized surface sites. Until now, there have been a few reviews about MoS 2 -based nanomaterials, with regard to functionalization for improvement of properties, such as high drug loading efficiency, dispersibility, physiological stability, biocompatibility, targeting ability, pharmacodynamics, controllable drug release, enhanced treatment and therapeautic efficacy, and even biodegradability and toxicity reduction. Here, we systematically summarized the progress of functionalized MoS 2 -based nanomaterials with improved physicochemical and biological properties for the biomedical applications. First, we emphatically introduced these biomedical applications in drug delivery, anticancer photothermal therapy (PTT), photodynamic therapy (PDT), and combined phototherapy. Besides, other biomedical applications were also introduced in detail including bioimaging, biosensing, theranostics, toxicity, tissue engineering, and antimicrobials. Lastly, the current challenges, opportunities and prospects of MoS 2 -based nanomaterials were also discussed in depth. We expect that this review will contribute to a quick and in-depth understanding of the latest progress in bioapplication of MoS 2 -based nanomaterials, inspiring the creation of various techniques to design and fabricate MoS 2based nanomaterials with multiple capability and high biological safety, and expand them into more application in the field of biomedicine.

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Fluorescence turn-on chemosensors based on surface-functionalized MoS2 quantum dots

Cited by 42 publications

References 74 publications

Visual detection of nitrite in sausage based on a ratiometric fluorescent system

Visual detection of nitrite in sausage based on a ratiometric fluorescent system

Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications

Functionalized MoS₂-Based Nanomaterials for Cancer Phototherapy and Other Biomedical Applications

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Fluorescence turn-on chemosensors based on surface-functionalized MoS2 quantum dots

Cited by 42 publications

References 74 publications

Visual detection of nitrite in sausage based on a ratiometric fluorescent system

Visual detection of nitrite in sausage based on a ratiometric fluorescent system

Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications

Functionalized MoS2-Based Nanomaterials for Cancer Phototherapy and Other Biomedical Applications

Contact Info

Product

Resources

About

Functionalized MoS₂-Based Nanomaterials for Cancer Phototherapy and Other Biomedical Applications