Facile Preparation of CuS Nanoparticles from the Interfaces of Hydrophobic Ionic Liquids and Water

Fan, Yunchang; Li, Yingcun; Han, Xiaojiang; Wu, Xing‐De; Zhang, Lina; Wang, Qiang

doi:10.3390/molecules24203776

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…An impurity (CuSO 4 •5H 2 O) present in M11-130-0 (Figure 2A) and M11-70 (Figure S9, Supporting Information) may result from partial oxidation of the CuS NCs. [33][34][35][36][37][38][39] The other samples showed pure CuS. The broad peaks confirmed the small crystallite size of CuS NCs observed with TEM.…”

Section: Structural and Spectral Characterization Of Cus Ncssupporting

confidence: 56%

Starch Capped Atomically Thin CuS Nanocrystals for Efficient Photothermal Therapy

Zheng

Cao

et al. 2021

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hampered to date by the limited success in the development of clinical photothermal therapy agents. [6] PTT exploits heat generated locally by a photosensitizer, [7] in which both the photothermal agents and laser sources, as well as the matching between them, are essential. Laser thermal therapy generally employs continuouswave lasers with wavelengths of either 808 or 980 nm. [8,9] The wavelengths are in the near-IR (NIR, λ = 700-1100 nm) window so that photons can penetrate deep into biological tissue. [10][11][12] Certain nanoparticles (NPs) have proper carrier densities enabling them to exhibit localized surface plasmon resonances (LSPRs) that efficiently facilitate the conversion of NIR light into heat. [10][11][12] Several types of NPs are currently being developed as photosensitizers, including metallic and semiconductor NPs. Noble metal NPs, for example, Ag and Au NPs, have been extensively applied for the LSPRs in the visible spectrum. [5,[13][14][15] Semi conductor NPs have tunable carrier concentration and LSPRs typically in the NIR range. [10,11] A high photothermal conversion efficiency is key to effective NP photosensitizers to avoid thermal damage to healthy tissue, which is a serious problem in PTT. The NPs with a high photothermal conversion efficiency and tumor selectivity can thus effectively destroy the cancer cells at a low photon density and in a short treatment time, while keeping the surrounding healthy tissue at a safe temperature. [16] Other key factors to consider for developing Photothermal therapy requires efficient plasmonic nanomaterials with small size, good water dispersibility, and biocompatibility. This work reports a one-pot, 2-min synthesis strategy for ultrathin CuS nanocrystals (NCs) with precisely tunable size and localized surface plasmon resonance (LSPR), where a single-starch-layer coating leads to a high LSPR absorption at the near-IR wavelength 980 nm. The CuS NC diameter increases from 4.7 (1 nm height along [101]) to 28.6 nm (4.9 nm height along [001]) accompanied by LSPR redshift from 978 to 1200 nm, as the precursor ratio decreases from 1 to 0.125. Photothermal temperature increases by 38.6 °C in 50 mg L −1 CuS NC solution under laser illumination (980 nm, 1.44 W cm −2 ). Notably, 98.4% of human prostate cancer PC-3/Luc+ cells are killed by as little as 5 mg L −1 starch-coated CuS NCs with 3-min laser treatment, whereas CuS NCs without starch cause insignificant cell death. LSPR modeling discloses that the starch layer enhances the photothermal effect by significantly increasing the free carrier density and blue-shifting the LSPR toward 980 nm. This study not only presents a new type of photothermally highly efficient ultrathin CuS NCs, but also offers in-depth LSPR modeling investigations useful for other photothermal nanomaterial designs.

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Section: Structural and Spectral Characterization Of Cus Ncssupporting

confidence: 56%

Starch Capped Atomically Thin CuS Nanocrystals for Efficient Photothermal Therapy

Zheng

Cao

et al. 2021

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“…Using this approach, Fan et al successfully synthesized CuS nanoparticles. [155] The authors used a mixture of 1-butyl-3-carboxymethylimidazolium bis (trifluoromethylsulfonyl)imide (C 4 C 2 OOHIm)NTf 2 and water, along with 1-methylimidazole, as the solvent and the reaction medium. The 1-methylimidazole also acted as a complexing ligand to ensure the transfer of the copper ions into the IL phase.…”

Section: Exp Approachmentioning

confidence: 99%

Metal Sulfide Nanoparticle Synthesis with Ionic Liquids – State of the Art and Future Perspectives

et al. 2021

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Metal sulfides are among the most promising materials for a wide variety of technologically relevant applications ranging from energy to environment and beyond. Incidentally, ionic liquids (ILs) have been among the top research subjects for the same applications and also for inorganic materials synthesis. As a result, the exploitation of the peculiar properties of ILs for metal sulfide synthesis could provide attractive new avenues for the generation of new, highly specific metal sulfides for numerous applications. This article therefore describes current developments in metal sulfide nanoparticle synthesis as exemplified by a number of highlight examples. Moreover, the article demonstrates how ILs have been used in metal sulfide synthesis and discusses the benefits of using ILs over more traditional approaches. Finally, the article demonstrates some technological challenges and how ILs could be used to further advance the production and specific property engineering of metal sulfide nanomaterials, again based on a number of selected examples.

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“…They are nanocrystalline and are highly lubricant. These features of transition metal sulphides make them a highly photo-luminescent material as compared to oxides [8]. Some sulphides show semimetallic nature and have the ability to form multiple oxidation states.…”

Section: Introductionmentioning

confidence: 99%

Structural, Optical and Ionic Properties of PVA Capped CuS Quantum Dots

Nath

Kalita

2023

JNanoR

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Copper sulphide quantum dots were synthesized by a simple chemical route using ammonia (aq.) as a complexing agent in PVA matrix. Copper acetate monohydrate and thiourea were used as precursors. The particle sizes as obtained from XRD results were found to be in good agreement with those of HRTEM. The UV-Vis. absorption and PL emission spectra exhibited a systematic blue shift of absorption and emission respectively confirming quantum confinement effect in the synthesized quantum dots. The band gap as estimated from Tauc-plot increased from 3.26eV to 3.92eV with change of concentration of complexing agent. The FTIR spectra exhibited Cu-S stretching peaks characteristic of CuS. Ionic contributions of the electrolytic ionic CuS solution as measured by a standard conductivity cell clearly showed the semiconducting behavior of the product material. The synthesized material may be exploited in fabrication of an optoelectronic device in UV-blue region.

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Facile Preparation of CuS Nanoparticles from the Interfaces of Hydrophobic Ionic Liquids and Water

Cited by 7 publications

References 28 publications

Starch Capped Atomically Thin CuS Nanocrystals for Efficient Photothermal Therapy

Starch Capped Atomically Thin CuS Nanocrystals for Efficient Photothermal Therapy

Metal Sulfide Nanoparticle Synthesis with Ionic Liquids – State of the Art and Future Perspectives

Structural, Optical and Ionic Properties of PVA Capped CuS Quantum Dots

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