CdS Nanoparticles as Efficient Fluorescence Resonance Energy Transfer Donors for Various Organic Dyes in an Aqueous Solution

Abstract

CdS nanoparticles (NPs) were synthesized in an aqueous phase in order to investigate their spectral behaviors as efficient fluorescence resonance energy transfer (FRET) donors for various organic dye acceptors. Our prepared CdS NPs exhibiting strong and broad emission spectra between 480-520 nm were able to transfer energy in a wide wavelength region from green to red fluorescence dyes. Rhodamine 6G (Rh6G), rhodamine B (RhB), and sulforhodamine 101 acid (Texas red) were tested as acceptors of the energy transfer from the CdS NPs. The three dyes and synthesized CdS NPs exhibited good FRET behaviors as acceptors and donors, respectively. Energy transfers from the CdS NPs and organic Cy3 dye were compared to the same acceptor Texas red dye at different concentrations. Our prepared CdS NPs appeared to exhibit better FRET behaviors comparable to those of the Cy3 dye. These CdS NPs in an aqueous solution may be efficient FRET donors for various organic dyes in a wide wavelength range between green and red colors.

CsPbBr3 Perovskite Quantum Dots-Based Monolithic Electrospun Fiber Membrane as an Ultrastable and Ultrasensitive Fluorescent Sensor in Aqueous Medium

“…It is notable that in the concentration range of 1–10 ppm, the FM sensor exhibits an excellent liner relationship between the concentration and PL intensities located at ∼513 and ∼560 nm for CPBQDs and R6G, respectively). Remarkably, the detection limit has been pushed down to 0.01 ppm (inset Figure d), which is superior to any previously reported QDs-based sensing systems. , …”

“…Remarkably, the detection limit has been pushed down to 0.01 ppm (inset Figure 2d), which is superior to any previously reported QDs-based sensing systems. 21,22 To gain information on the durability of CPBQDs/PS FM, its aqueous stability and photostability were investigated, respectively. The aqueous stability of CPBQDs/PS FM was assessed by directly immersing the composite membrane into water, which would lead instant destruction of unprotected pure CPBQDs.…”

Self‐assembly of Renewable Nano‐sized Triterpenoids

“…In recent years, templated growth of CdS nanoparticles (CdSNP) in the form of nano and micro sized spherical objects and fibers has become an area of intense research because of their applications in industry as well as advanced areas such as biological labelling, light emitting diodes, photoelectronic devices, etc . As the self‐assembled 18β‐glycyrrhetinic acid 64 yielded 3D flower‐like nano and microsized superstructures with very high surface area, we utilized those self‐assembled nano and microstructures for the templated growth of CdSNPs .…”

CsPbBr3 perovskite quantum dot decorated ZIF-8 MOF: a selective dual recognition fluorometric visual probe for 4-nitroaniline and rhodamine blue

“…Noticeably, the limit of detection has been reduced to 0.088 ppm, and shows comparable results with some previously reported studies for detecting various dyes. [34][35][36][37] The performance of this PL sensor indicated by some important parameters like durability, photostability, and uorescence response time was studied. The sensitivity of the sensing probe was established by the speed with which the quenching took place at 518 nm with RhB addition.…”