Plasmonic colloidal Au nanoparticles in DMSO: a facile synthesis and characterisation

Dzhagan, Volodymyr; Kapush, O.A.; Plokhovska, Svitlana; Buziashvili, Anastasiia; Pirko, Ya. V.; Yeshchenko, Oleg A.; Yukhymchuk, Volodymyr; Yemets, А. І.; Zahn, Dietrich R. T.

doi:10.1039/d2ra03605c

Cited by 4 publications

(4 citation statements)

References 83 publications

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“…The underlying mechanisms of such influence may include a change in the potential barrier at the outer surface of the QD due to different dielectric properties of the solvent, rearrangement of the intrinsic ligand molecules due to their interaction with solvent molecules, or direct involvement of the solvent molecules into the electronic interaction with the QD. Here we investigated the effect of dimethyl sulfoxyl (DMSO), as well as Au NPs synthesized in this DMSO in analogy to the synthesis of Au NPs in water [28].…”

Section: Resultsmentioning

confidence: 99%

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Tuning the photoluminescence of CdTe quantum dots by controllable coupling to plasmonic Au nanoparticles

Dzhagan

Kapush

Isaeva

et al. 2022

Phys. Chem. Solid St.

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A controllable variation of the photoluminescence (PL) intensity of semiconductor quantum dots (QDs) via their coupling to plasmonic nanoparticles (NPs) is the potential basis for optoelectronic and sensing applications. In this work, the effect of Au NPs on the PL of colloidal CdTe QDs is investigated in solution and solid films. An PL enhancement for the QDs synthesized in water was observed in case of spectral overlap of the plasmon absorption band of and QD PL band. In case of Au NPs synthesized in dimethyl sulfoxyl the trend is to reduction of the PL intensity. For the reference samples prepared by mixing QDs not with Au NP solutions but with corresponding pure solvent, certain PL enhancement was observed and presumably attributed to reduction of self-absorption or non-radiative interparticle interaction in less concentrated QD solution. However, the contribution of this dilution-related enhancement is expected to be independent of the spectral properties of NPs and QDs. Therefore, the observed in this work different behavior of QD PL in certain combinations of QDs and NPs is attributed to interaction between electronic excitation in the QD and plasmon.

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Section: Resultsmentioning

confidence: 99%

“…The molar ratio of NaCt to HAuCl4 was the primary factor controlled to achieve the desired particle size. Deionized water or DMSO was used as the dispersion medium [28].…”

Section: Methodsmentioning

confidence: 99%

Tuning the photoluminescence of CdTe quantum dots by controllable coupling to plasmonic Au nanoparticles

Dzhagan

Kapush

Isaeva

et al. 2022

Phys. Chem. Solid St.

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“…By varying temperature, pressure, pH, and sodium citrate concentration, AuNPs with different diameters, parameters, and features can be produced [ 38 ]. Later studies have modified the Turkevich method to attain lower variability, enhanced uniformity, and repeatability [ 39 , 40 , 41 , 42 , 43 , 44 ]. The use of certain reducing agents or stabilizers in the chemical synthesis process, such as sodium borohydride, could potentially be toxic to both individuals and the environment [ 37 , 45 ].…”

Section: Synthesis Of Aunpsmentioning

confidence: 99%

Prospect of Gold Nanoparticles in Pancreatic Cancer

Yin,

Han,

Cui

et al. 2024

Pharmaceutics

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Pancreatic cancer (PC) is characterized by its notably poor prognosis and high mortality rate, underscoring the critical need for advancements in its diagnosis and therapy. Gold nanoparticles (AuNPs), with their distinctive physicochemical characteristics, demonstrate significant application potential in cancer therapy. For example, upon exposure to lasers of certain wavelengths, they facilitate localized heating, rendering them extremely effective in photothermal therapy. Additionally, their extensive surface area enables the conjugation of therapeutic agents or targeting molecules, increasing the accuracy of drug delivery systems. Moreover, AuNPs can serve as radiosensitizers, enhancing the efficacy of radiotherapy by boosting the radiation absorption in tumor cells. Here, we systematically reviewed the application and future directions of AuNPs in the diagnosis and treatment of PC. Although AuNPs have advantages in improving diagnostic and therapeutic efficacy, as well as minimizing damage to normal tissues, concerns about their potential toxicity and safety need to be comprehensively evaluated.

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“…Modifying the NP surface is a well-known approach to both modifying the properties of the NPs and clarifying the nature of some properties, particularly the origin of different PL bands. 40,45,46 Dimethyl sulfoxide (DMSO), for instance, a very useful solvent, miscible with water, oen used in biomedical applications and the synthesis of nanoparticles, [47][48][49] was shown to be an efficient stabilizer of the ZnO colloidal NPs, 37,38 ensuring a very high intensity of both surface-related (DPL) 38,45 Fig. 3 XRD patterns (a) and Raman spectra (b) of ZnO NPs synthesized using G. lucidum extract.…”

Section: Characterization Of Zno Npsmentioning

confidence: 99%

ZnO and Ag NP-decorated ZnO nanoflowers: green synthesis using Ganoderma lucidum aqueous extract and characterization

et al. 2023

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Plasmonic colloidal Au nanoparticles in DMSO: a facile synthesis and characterisation

Abstract: We report on the synthesis of stable plasmonic gold nanoparticles (Au NPs) in dimethyl sulfoxide (DMSO) and demonstrate that the AU NPs are biocompatible and function as SERS-active substrates.

Cited by 4 publications

References 83 publications

Tuning the photoluminescence of CdTe quantum dots by controllable coupling to plasmonic Au nanoparticles

Tuning the photoluminescence of CdTe quantum dots by controllable coupling to plasmonic Au nanoparticles

Prospect of Gold Nanoparticles in Pancreatic Cancer

ZnO and Ag NP-decorated ZnO nanoflowers: green synthesis using Ganoderma lucidum aqueous extract and characterization

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