Ag<sub>2</sub>S quantum dot theragnostics

Purushothaman, Baskaran; Song, Joon Myong

doi:10.1039/d0bm01576h

Cited by 37 publications

(30 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, silver sulfide quantum dots (Ag 2 S QDs) enjoy almost non-existent toxicity and attractive fluorescence properties, which can cover the area between infrared and NIR, making them ideal objects for metal ion detection . As a kind of near-infrared fluorescent agent, a silver sulfide quantum dot has exerted tremendous fascination on biomedical labeling and imaging in recent years. − Although great progress has been made in the synthesis and application of nano-silver sulfide quantum dots in the past decade, there are still challenges in the biological system. The physical and chemical pathways of traditional Ag 2 S quantum dot synthesis usually require harsh conditions and toxic reagents, including modified particle size engineering surface ligands.…”

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Water-Soluble Silver Sulfide Quantum Dots and Their Application to Bioimaging

Ren

Zhang

et al. 2021

ACS Omega

View full text Add to dashboard Cite

This work reports a simple water-phase microwave method for the synthesis of water-soluble red emission Ag2S quantum dots at low temperatures without the need for an anaerobic process. It is worth noting that the prepared water-soluble Ag2S quantum dots enjoy positive water dispersion stability. 3-(4,5)-Dimethylthiahiazo(-z-y1)-3,5-di-phenytetrazoliumromide (MTT) results showed that the prepared Ag2S quantum dots had promising biocompatibility and low cytotoxicity. In addition, we further applied the low-toxicity near-infrared Ag2S quantum dots for cell imaging, demonstrating a promising biological probe for cell imaging.

show abstract

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Water-Soluble Silver Sulfide Quantum Dots and Their Application to Bioimaging

Ren

Zhang

et al. 2021

ACS Omega

View full text Add to dashboard Cite

show abstract

“…Metal–sulfide based semiconductors MS x (except ZnS) as their narrow band gap can facilitate the light absorbance at a wide wavenumber of visible to infrared range. , Among the metal sulfides, Ag 2 S has attracted great attention in the field of photocatalysis, as its narrow band gap (∼1 eV) and relatively larger absorption coefficients (∼10 6 cm –1 ), − high chemical stability, and negligible toxicity. − More recently, Masoud et al reported a porous hollow Ag/Ag 2 S/Ag 3 PO 4 catalyst: it has a suitable band gap energy of 2.17 eV and showed high efficiency in the photocatalytic degradation of tetracycline under simulated sunlight irradiation. They attributed the good photocatalytic activity of Ag/Ag 2 S/Ag 3 PO 4 nanocomposites to the unique hierarchical architectures, which promoted visible-light harvesting, reduced a recombination, and boosted the separation of electron–hole pairs that originated from the as-formed heterojunctions .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Reduction of Aromatic Nitro Compounds with Ag/Ag_xS Composites under Visible Light Irradiation

2021

View full text Add to dashboard Cite

A series of silver sulfide composites were prepared via the hydrothermal method with L-cysteine and AgNO 3 in water at a range of Lcysteine/AgNO 3 molar ratio of 0.5−8. The prepared Ag/Ag x S materials were consisted of Ag, Ag 2 S, Ag 2 S 2 , and Ag 2 S n species as confirmed by XRD, TEM, and XPS. The Ag/Ag x S composites are active for the photocatalytic reduction of aromatic nitro compounds under the visible light irradiation. The composition of the stoichiometric Ag 2 S, the nonstoichiometric Ag 2 S 2 and Ag 2 S n , and metallic Ag species affected the photocatalytic performances largely. When more nonstoichiometric Ag 2 S 2 and Ag 2 S n presented on the surface, the absorption in the visible (vis) light region was enhanced remarkably and presented a blue shift, leading to a bigger band gap energy value (E g ) and higher cathodic conduction band edge potential (E CB ), which promoted the formation of photogenerated electrons and inhibited the combination of photoelectrons and holes. When the more Ag 0 presented on the surface, the more photogenerated electrons were transferred from the conduction band of Ag x S to Ag 0 , preventing the combination of photoelectrons and holes. Thus, the photocatalytic performances of the Ag/Ag x S composites could be controlled by varying the surface composition.

show abstract

“…In recent years, metal sulfides have received extensive attention in biomedical applications due to their fascinating properties, such as low-cost, suitable bandgap, environmentally high stability, etc. [24,26,203,[259][260][261][262][263][264] SnS is also biocompatible and nontoxic due to its poor absorption by human body and rapid excretion in faeces. [203,265] Up to now, 0D SnS QDs, 2D SnS NSs, and triangular SnS nanopyramids were used in biomedical applications such as photothermal therapy, chemo-therapy agents, and photoacoustic imaging.…”

Section: Biomedical Applicationsmentioning

confidence: 99%

Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications

Zhu

et al. 2021

Small Science

View full text Add to dashboard Cite

Tin-based binary chalcogenide Sn-X (X ¼ S, Se, Te) compounds have attracted extensive interest in the optical, optoelectronic, catalysis, and flexible systems due to their intriguing performances. [1][2][3][4][5][6][7] The Sn-X (X ¼ S, Se, Te) compounds are typically layered materials and usually have three crystalline phases: hexagonal, monoclinic, and orthorhombic; orthorhombic phase is denoted by chemical formula SnX, and hexagonal and monoclinic phases are labeled as SnX 2 . [8] Until now, SnSe and SnTe compounds have already achieved great progress in many fields, especially for thermoelectronics and ferroelectrics, [9][10][11][12] and many important reviews have been reported on SnSe and SnTe compounds due to their rapid development. [8,[13][14][15][16] For example, in 2020, Chen et al. [14] summarized a comprehensive overview of controlled synthesis, characterization, and thermoelectric performance in SnSe. In 2018, Shi et al. [8] summarized the growth, characterization, and applications (photovoltaics, supercapacitors, rechargeable batteries, phase-change memory devices, and topological insulator) of SnSe. In 2018, Li et al. [15] reviewed the development of SnS, SnSe, and SnTe, mainly focusing on the controllable tuning of the electron and phonon transport as well as the challenges for further optimization and practical applications. Among Sn-X (X ¼ S, Se, Te) compounds, tin monosulfide (SnS) as a typical black phosphorus analogue, has also received intensive scientific attention due to its unique properties, such as inexpensive, sustainable, suitable bandgap between Si (1.12 eV) and GaAs (1.43 eV), [17] high absorption coefficient (10 À4 cm À1 ), [18] strong mechanical properties, and anisotropic optoelectronic, [19][20][21] which are of great value in optoelectronics, catalysis, sensors, and nanomedicines. [7,[22][23][24][25][26][27] In addition, layered SnS with suitable spacing structures hold promising potentials in the field of lithium (Li)-ion batteries and sodium (Na)-ion batteries due to their relatively high electrical conductivity and theoretical capacity. [28][29][30][31][32] However, although popular SnS has achieved great progress in a variety of fields, few comprehensive reviews have hitherto focused on the field of SnS-based nanostructures and their fascinating applications.Inspired by important reviews on SnSe reported by Chen [14] and Li [8] in recent years, we comprehensively summarized the synthesis, characterization, and the latest progress of SnS-based nanostructures, as shown in Figure 1. First, the most commonly employed techniques (hydrothermal, vapor deposition, electrostatic assembly, etc.) for preparing SnS and SnS-based nanostructures are presented in detail with their recent progress. Furthermore, the fundamental properties (crystal structure, electronic band structure, optical property, and Raman spectroscopy) and diverse applications (batteries, solar cells, catalysis, optoelectronics, sensors, ferroelectrics, thermoelectrics, nonlinear properties, and biomedical applicatio...

show abstract

Ag₂S quantum dot theragnostics

Abstract: The silver sulfide quantum dot (Ag2S QD) as a theragnostic agent has received much attention because it provides excellent optical and chemical properties to facilitate diagnosis and therapy simultaneously. Ag2S...

Cited by 37 publications

References 72 publications

One-Step Synthesis of Water-Soluble Silver Sulfide Quantum Dots and Their Application to Bioimaging

One-Step Synthesis of Water-Soluble Silver Sulfide Quantum Dots and Their Application to Bioimaging

Photocatalytic Reduction of Aromatic Nitro Compounds with Ag/Ag_xS Composites under Visible Light Irradiation

Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications

Contact Info

Product

Resources

About

Ag2S quantum dot theragnostics

Abstract: The silver sulfide quantum dot (Ag2S QD) as a theragnostic agent has received much attention because it provides excellent optical and chemical properties to facilitate diagnosis and therapy simultaneously. Ag2S...

Cited by 37 publications

References 72 publications

One-Step Synthesis of Water-Soluble Silver Sulfide Quantum Dots and Their Application to Bioimaging

One-Step Synthesis of Water-Soluble Silver Sulfide Quantum Dots and Their Application to Bioimaging

Photocatalytic Reduction of Aromatic Nitro Compounds with Ag/AgxS Composites under Visible Light Irradiation

Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications

Contact Info

Product

Resources

About

Ag₂S quantum dot theragnostics

Photocatalytic Reduction of Aromatic Nitro Compounds with Ag/Ag_xS Composites under Visible Light Irradiation