Lead(II)-triggered aggregation-induced emission enhancement of adenosine-stabilized gold nanoclusters for enhancing photoluminescence detection of nabam—disodium ethylenebis(dithiocarbamate)

Zhuang, Qianfen; Zeng, Chao; Mu, Yaxin; Zhang, Tao; Yi, Guotao; Wang, Yong

doi:10.1016/j.cej.2023.144113

Cited by 14 publications

(2 citation statements)

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“…As explained, GNC has a good affinity towards Pb 2+ due to surface functional groups. The enhanced colour intensity is primarily due to the aggregation mechanism as reported [42]. To understand the Pb 2+ interaction with GNC, we have performed UV-vis, FT-IR, emission spectra, HR-TEM, FE-SEM, particle size, zeta potential, and XPS experiments to prove the structural transition phenomenon due to the binding of Pb 2+ .…”

Section: Optical and Surface Morphological Characterizations Of Gnc A...mentioning

confidence: 80%

A simple naked eye detection of Pb²⁺ on a gold nanocluster decorated disposable paper spot arrays

Kumara,

Naveen,

Sonia

et al. 2024

Phys. Scr.

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: Among all the heavy metal ions, Lead (Pb2+) has become a serious threat to human health and the environment. It is vital to develop an accurate system to monitor the Pb2+ level. Fluorescent and colorimetric sensors are one such system to detect Pb2+ with high accuracy. Herein, we used thiolated gold nanoclusters (GNC) decorated paper spot arrays for the detection of Pb2+ through a simple colorimetric method. The prepared GNC and the developed complex were well-studied using various characterizations. The addition of Pb2+ to GNC results in a slight shift in the absorption spectra from 485 nm to 534 nm. Further, GNC showed a broad emission peak centered around 650 nm, and the addition of Pb2+ resulted in an enhancement in the peak intensity, due to cation-induced-aggregation-induced emission enhancement (AIEE). The HR-TEM analysis confirms the spherical shape of the prepared GNCs with an average size of 2.60 nm. Whereas, the addition of Pb2+ onto GNC leads to the formation of an aggregated structure of size 6.17 nm due to the formation of a chelation complex. The GNC showed a particle size of 2 nm with a zeta potential of -16.45 mV, whereas the Pb2+@GNC complex exhibited an increment in an average size to 96 nm having a zeta potential of -19.67 mV, substantially demonstrating the capturing of Pb2+ by GNC. Overall, spectroscopic and surface morphology studies indicated aggregated induced emission (AIE) phenomena between GNC and Pb2+. The selective detection of Pb2+ by GNC was observed by the appearance of salmon pink to mauves colour and was captured using a smartphone. The developed paper spot array can detect up to 10 ppm of Pb2+. Further, the developed probe showed a distinguishable color change for Pb2+ along with other cations of interest such as Hg2+, Mg2+, K+, Mn2+, and Fe2+. Therefore, the present paper spot array could detect Pb2+ even in the presence of other metal ions due to its evident distinguishability. The fabricated GNC-embedded paper spot array obeys the new REASSURED criteria proposed by the World Health Organization (WHO) and could be used for on-spot detection of Pb2+.

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Section: Optical and Surface Morphological Characterizations Of Gnc A...mentioning

confidence: 80%

A simple naked eye detection of Pb²⁺ on a gold nanocluster decorated disposable paper spot arrays

Kumara,

Naveen,

Sonia

et al. 2024

Phys. Scr.

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“…S5, ESI†), which may be caused by aggregation-induced emission (AIE). 35–37 Indeed, by incubating DAMP-AuNCs with fibrinogen and thrombin separately, it was found that AuNCs aggregated only with fibrinogen (Fig. S6, ESI†).…”

mentioning

confidence: 99%

Mercaptopyrimidine-templated gold nanoclusters for antithrombotic therapy

Dai,

Lei,

Zhang

et al. 2024

J. Mater. Chem. B

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hROS‐Responsive Behavior for Long‐Term Stability of Cellulosic Gold Nanoclusters

Yu,

Li,

Duan

et al. 2023

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Understanding the gold core‐ligand interaction in gold nanoclusters (GNCs) is essential for the on‐demand tailoring of their photoluminescence properties and long‐term stability. Here, inspired by the suckers arranged directionally on the tentacles of octopus, a series of GNCs with regulating ligand structures are grown and stabilized on the cellulose nanocrystals (CNCs). The carboxylated CNCs providing an electron‐rich environment to promote the luminescence of GNCs and stabilize it within a long‐term of 1 year through anchoring and diluting effects, and the highest quantum yields reaches 31.02% in ultrapure water. Interestingly, this bionic preparation strategy is generally applicable to various ligands for tailoring on‐demand hROS‐responsive and nonresponsive GNCs to construct tunable‐emission wavelength dual GNCs ratiometric probes. The results show that designing a specific ligand structure to inhibit the transformation of Au‐Au to Au (I)‐ligand in GNCs is crucial to regulate the hROS‐responsive characteristics. As expected, the interfacial compatible dual GNCs ratiometric probe with a hROS limit of detection of 0.74 µmol L−1 can diagnose certain diseases through intracellular hROS imaging. This work provides important insights for understanding the gold core‐ligand interaction in GNCs during the oxidation process triggered by intracellular hROS.

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Lead(II)-triggered aggregation-induced emission enhancement of adenosine-stabilized gold nanoclusters for enhancing photoluminescence detection of nabam—disodium ethylenebis(dithiocarbamate)

Cited by 14 publications

References 35 publications

A simple naked eye detection of Pb²⁺ on a gold nanocluster decorated disposable paper spot arrays

A simple naked eye detection of Pb²⁺ on a gold nanocluster decorated disposable paper spot arrays

Mercaptopyrimidine-templated gold nanoclusters for antithrombotic therapy

hROS‐Responsive Behavior for Long‐Term Stability of Cellulosic Gold Nanoclusters

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Lead(II)-triggered aggregation-induced emission enhancement of adenosine-stabilized gold nanoclusters for enhancing photoluminescence detection of nabam—disodium ethylenebis(dithiocarbamate)

Cited by 14 publications

References 35 publications

A simple naked eye detection of Pb2+ on a gold nanocluster decorated disposable paper spot arrays

A simple naked eye detection of Pb2+ on a gold nanocluster decorated disposable paper spot arrays

Mercaptopyrimidine-templated gold nanoclusters for antithrombotic therapy

hROS‐Responsive Behavior for Long‐Term Stability of Cellulosic Gold Nanoclusters

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Product

Resources

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A simple naked eye detection of Pb²⁺ on a gold nanocluster decorated disposable paper spot arrays

A simple naked eye detection of Pb²⁺ on a gold nanocluster decorated disposable paper spot arrays