Facile synthesis of luminescent silver nanoparticles and fluorescence interactions with blue-emitting polyarylene ether nitrile

Jia, Kun; Wang, Pan; Yuan, Liting; Zhou, Xuefei; Chen, Wenjin; Liu, Xiaobo

doi:10.1039/c4tc02850c

Cited by 71 publications

(34 citation statements)

References 40 publications

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“…42 On the contrary, the co-reduction of metal ions precursor in one-pot reaction was considered as a promising protocol to prepare anisotropic bimetallic gold/silver nanoparticles in a much easier way. In our previous work, 43 the highly luminescent silver nanoparticles with average size of 6 nm were synthesized in the common polar solvent of DMF in the presence of water soluble polymer of PVP, which demonstrated that the silver ions can be readily reduced by DMF to nanoparticles that were stabilized with PVP. Herein, we found that the morphology of prepared nanostructures can be dramatically shaped when small amount of HAuCl 4 precursor solution was introduced into the AgNO 3 /PVP/DMF reaction system under the same experimental conditions.…”

Section: Resultsmentioning

confidence: 99%

One-pot synthesis of Au/Ag bimetallic nanoparticles to modulate the emission of CdSe/CdS quantum dots

et al. 2015

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In this work, the gold/silver bimetallic nanoparticles (Au/Ag NPs) have been synthesized via a facile one-pot protocol involving co-reduction of chloroauric acid and silver nitrate with N, Ndimethylformamide (DMF) solvent in the presence of water soluble polyvinylpyrrolidone (PVP). The morphology of obtained Au/Ag NPs can be readily modified by changing reaction time and relative concentration ratio of gold/silver precursor. Subsequently, the synthesized Au/Ag NPs have been employed to modulate the fluorescent emission of CdSe/CdS quantum dots (QD) in the solution phase on the basis of plasmon controlled fluorescence. The experimental results demonstrated that the fluorescent emission of CdSe/CdS QD can be either obviously quenched or enhanced, depending on the spectral overlap and local distances control between CdSe/CdS QD and Au/Ag bimetallic NPs. Specifically, the as-synthesized Au/Ag NPs significantly quenched the fluorescent emission of CdSe/CdS QD and the quenching effect was enhanced when the plasmonic wavelength of Au/Ag NPs was tuned towards fluorescent emission wavelength of CdSe/CdS QDs. On the contrary, the fluorescent emission of CdSe/CdS QD can be obviously enhanced in the presence of SiO 2 coated Au/Ag NPs with appropriate layer thickness.

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Section: Resultsmentioning

confidence: 99%

One-pot synthesis of Au/Ag bimetallic nanoparticles to modulate the emission of CdSe/CdS quantum dots

et al. 2015

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“…Для формирования покрытий, содержащих эти наночастицы, был использован полимерно-солевой метод, подробно описанный в [7,8,11]. Образование наночастиц серебра в растворе происходило в результате восстановления ионов Ag + поливинилпирролидоном (ПВП) [24][25][26]. Химические составы пленкообразующих растворов представлены в таблице.…”

Section: материалы и методыunclassified

“…Полоса поглощения с максимумом при 305 nm обусловлена наличием в растворе нитратов серебра и других металлов [28,29]. Более длинноволновая полоса поглощения с максимумом ∼ 425 nm определяется плазмонным поверхностным резонансом [25,26,[30][31][32][33][34][35] наночастиц Ag, формирующихся в растворе. Образование наночастиц Ag происходит при восстановлении ионов серебра поливинилпирролидоном [24,26].…”

Section: результаты и обсужденияunclassified

Генерация Синглетного Кислорода В Микрокапиллярных Оптических Элементах С Фотоактивными Покрытиями

Багров¹,

Киселев²,

Евстропьев³

et al. 2020

Журнал Технической Физики

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The results of the study of spectral and luminescence properties of oxide coatings comprising ZnO and Ag nanoparticles and the process of singlet oxygen generation by these coatings are presented. Based on experimental results the microcapillary photoactive cuvette for the air and water purification systems has been developed. Microcapillary photoactive cuvette is optical element made from silica glass and having the canals with predetermined sizes, shapes and spatial dispositions, which containing ZnO and MgO nanocrystals and Ag nanoparticles. High effectiveness of singlet oxygen generation by ZnO and ZnO-MgO-Ag coatings and microcapillary cuvette at the irradiation by UV (370 nm) and violet (405 nm) light has been demonstrated.

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“…The nitrile groups, with strong polar on the aromatic ring, can promote the adhesion of the polymer main‐chain to many substrates and improve the dielectric constant effectively . The aryl ether bonds on the macromolecular main‐chain of PEN facilitate the solubility of PEN in polar organic solvents , such as N , N ‐dimethylformamide (DMF) , tetrahydrofuran , and N ‐methyl‐2‐pyrrolidinone (NMP) , as well as wide range of processing window, making it easily to be processed into different kinds of products . In addition, PEN with different structures have been prepared by changing the monomer, especially the diphenols.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, dielectric, and thermal properties of polyarylene ether nitrile and boron nitride nanosheets composites

et al. 2017

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The thermal conductivity of polyarylene ether nitrile (PEN) is effectively improved by the incorporation of boron nitride nanosheet (BNNS). BNNS is obtained via sonication exfoliation of commercial available hexagonal boron nitride (h‐BN) microplatelets in N‐methylpyrrolidone solvent. The BNNS, which is in 1–3 layers, is characterized by Atomic Force Microscopy measurement, Transmission electron microscopy observation and Ultraviolet–visible (UV–Vis) spectrum. The BNNS is incorporated into the PEN matrix to fabricate BNNS/PEN nanocomposites by using the solution‐casting method. The micromorphologies, thermal, mechanical, dielectric, and thermal conductivity properties of the obtained BNNS/PEN nanocomposites are investigated in detail. Scanning electron microscopy observation shows that the BNNS is homogeneously dispersed in the PEN matrix. The obtained BNNS/PEN nanocomposites show good thermal stability as the glass transition temperatures and initial decomposition temperatures of them are higher than 200 and 490°C. The coefficients of thermal expansion decreases with the increasing of BNNS, and is as low as 0.33 µm/°C when 5.0 wt% of BNNS is incorporated. The thermal conductivity increases with 64% at 5.0 wt% content of BNNS. The incorporation of the BNNS makes these BNNS/PEN composites as potential candidates to be used at high temperature with small thermal deformation. POLYM. COMPOS., 39:E1598–E1605, 2018. © 2017 Society of Plastics Engineers

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Facile synthesis of luminescent silver nanoparticles and fluorescence interactions with blue-emitting polyarylene ether nitrile

Abstract: In this work, fluorescent silver nanoparticles with average size of 6 nm were synthesized in an organic phase via a facile one-step reaction.

Cited by 71 publications

References 40 publications

One-pot synthesis of Au/Ag bimetallic nanoparticles to modulate the emission of CdSe/CdS quantum dots

One-pot synthesis of Au/Ag bimetallic nanoparticles to modulate the emission of CdSe/CdS quantum dots

Генерация Синглетного Кислорода В Микрокапиллярных Оптических Элементах С Фотоактивными Покрытиями

Mechanical, dielectric, and thermal properties of polyarylene ether nitrile and boron nitride nanosheets composites

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