Photoactivatable Fluorescent Tags for Dual-Modality Positron Emission Tomography Optical Imaging
作者:Amaury Guillou、Eda Nisli、Simon Klingler、Anthony Linden、Jason P. Holland
DOI:10.1021/acs.jmedchem.1c01899
日期:2022.1.13
Fluorescent protein conjugates are vital tools in a wide range of scientific disciplines from basic biochemical research to applications in clinical pathology and intraoperative surgery. We report the synthesis and characterization of photoactivatable fluorophores (PhotoTags) based on the functionalization of coumarin, fluorescein, BODIPY, rhodamine B, and cyanine dyes with a photochemically active
A new reagent, N-[2-(diphenylphosphino)ethyl]-4-(1,3,5,7-tetramethyl-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene-8-yl)benzamide (DPPEA-BODIPY), was designed and synthesized for analysis of hydroperoxides. DPPEA-BODIPY fluoresces at low levels in the visible range (λex⁄λem = 502 nm/515 nm) and reacts with hydroperoxides to produce DPPEA-BODIPY oxide, which fluoresces at high levels. The fluorescence intensity of the reaction mixture was observed to be linearly related to the methyl linoleate hydroperoxide (MeLOOH) concentration.
BODIPYs as optical limiters: The optical limiting properties of a series of 3,5-dithienylenevinylene BODIPY dyes with D-π-A type structures were studied by using the z-scan technique at 532 nm in the nanosecond pulse range. An unusually strong reverse saturable absorption response was observed when the compounds are embedded in poly(bisphenol carbonate A) polymer thin films.
Silica nanoparticles doped with multiple dyes featuring highly efficient energy transfer and tunable Stokes-shift
申请人:Bonacchi Sara
公开号:US09616141B2
公开(公告)日:2017-04-11
The present invention relates to silica nanoparticles comprising at least two dyes. Said dyes have a respective relationship of donor-acceptor couple in an energy transfer process and have a molar absorption coefficient ≧10,000 M−1 cm−1 for the considered spectral region, a fluorescence quantum yield ≧0.01, good overlap integral, according to the Förster theory, between said donor and said acceptor dye; said active compounds may be lipophilic or may present a functionality useful for the introduction of a trialkoxysilane moiety. The dyes provide an efficient energy transfer process. Said nanoparticles are useful as probes in the field of medicine, in particular therapy and diagnostics, more particularly in theranostics, and in the field of analytical chemistry.
RGD peptide respectively. Results: Boron-dipyrromethene (BODIPY) used as a model NIR dye can be efficiently dispersed in the RGD-HFBI solution by simple mixing and sonication for 30 min. The data shows that self-assembled RGD-HFBI forms a protein nanocage by using the BODIPY as the assembly template. Cell uptake assay proves that RGD-HFBI/BODIPY can efficiently stain αvβ3 integrin-positive cancer cells