Determination of the energy transfer efficiency between CdSe/ZnS quantum dots with two different sizes through a photothermal approach

Martins, V. M.; Andrade, Acácio A.; Pilla, Viviane; Messias, Djalmir N.

doi:10.1016/j.jlumin.2018.02.033

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…There is an increasing interest in simplified instrumentation for measurements of such FRET processes and FRET-based reporter systems. In last few years several approaches have been developed: increasing the spatial resolution using microscope in experimental setup [43,44] upconversion time-gated fluorescence [45] pump-probe schemes [46] and mathematical models [9] among others. However, these schemes are often rather complicated.…”

Section: Time-resolved Fret Studymentioning

confidence: 99%

“…This has meanwhile triggered the development of a large toolbox of molecular and nanoscale PL reporters to choose from, ranging from organic dyes over metal-ligand complexes and luminescent proteins to luminescent nanoparticles and nanocrystals like semiconductor quantum dots (QDs) [1][2][3]. Depending on the application and type of reporter or probe, the response of the reporter's PL properties [4,5] to temperature [6][7][8] and its chemical environment [9][10][11][12] including e.g. pH [13,14] and oxygen concentration [15,16] are exploited.…”

Section: Introductionmentioning

confidence: 99%

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Time-resolved FRET in AgInS₂/ZnS-CdSe/ZnS quantum dot systems

Evstigneev¹,

Parfenov²,

Dubavik³

et al. 2019

Nanotechnology

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The fast and accurate detection of disease-related biomarkers and potentially harmful analytes in different matrices is one of the main challenges in the life sciences. In order to achieve high signal-to-background ratios with frequently used photoluminescence techniques, luminescent reporters are required that are either excitable in the first diagnostic window or reveal luminescence lifetimes exceeding that of autofluorescent matrix components. Here, we demonstrate a reporter concept relying on broad band emissive ternary quantum dots (QDs) with luminescence lifetimes of a few hundred nanoseconds utilized for prolongating the lifetimes of organic or inorganic emitters with lifetimes in the order of a very few 10 ns or less through fluorescence resonant energy transfer. Using spectrally resolved and time-resolved measurements of the system optical response we demonstrate the potential of lifetime multiplexing with such systems exemplarily for AgInS 2 /ZnS and CdSe/ZnS QDs.

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