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Dually fluorescent silica nanoparticles
(ELSEVIER SCIENCE BV, 2011)
The cationic dyes 9-aminoacridine (9AA) and safranine (Sf) were entrapped into silica spheres of about 0.2 mu m diameter prepared by modified Stober method. The fluorescent materials are investigated by steady-state and ...
Properties of singlet- and triplet-excited states of hemicyanine dyes
(Versita, 2014-06)
The fluorescence emission spectra and fluorescence quantum yields of hemicyanine dyes LDS 698, LDS 722, and LDS 730 were measured in different media. No transient species was detected in the laser flash-photolysis experiments ...
A systematic study on fluorescence contrast in near infrared diffuse transmittance imaging with indocyanine green
(N I R Publications, 2019-06-25)
Near infrared fluorescence imaging is a sensitive, noninvasive technique for diagnostic applications in biomedical optics. The main purpose of this work is thus to explore how to improve the contrast of images obtained by ...
Glowing-in-the-Screen: Teaching Fluorescence with a Homemade Accessible Setup
(American Chemical Society, 2021-07)
Teaching fluorescence aims to deeply communicate light-matter interactions. The main fluorescence concepts are covered in undergraduate courses and are difficult to comprehend as the proper lighting conditions for seeing ...
Synthesis and Characterization of Photoswitchable Fluorescent Silica Nanoparticles
(Wiley VCH Verlag, 2008-01)
We have designed and synthesized a new functional (amino reactive)highly efficient fluorescent molecular switch (FMS) with a photochromicdiarylethene and a rhodamine fluorescent dye. The reactive group in thisFMS ...
Frequency upconversion involving triads and quartets of ions in a Pr3+/Nd3+ codoped fluoroindate glass
(2002-09-15)
Frequency upconversion (UC) processes involving energy transfer (ET) among Nd 3+ and Pr 3+ ions in a fluoroindate glass are reported. In a first experiment, the excitation of Pr 3+ [transition 3H 4→ 1D 2] and of Nd 3+ ...
Rose bengal in poly(2-hydroxyethyl methacrylate) thin films: Selfquenching by photoactive energy traps
(IOP Publishing, 2017-03)
The effect of dye concentration on the fluorescence, ΦF, and singlet molecular oxygen, ΦΔ, quantum yields of rose bengal loaded poly(2-hydroxyethyl methacrylate) thin films (∼200 nmthick) was investigated, with the aim of ...