Lasing and fluorescent characteristics of nine, new, flashlamp-pumpable, coumarin dyes in ethanol and ethanol: Water

Fletcher, A. N.; Bliss, D. E.; Kauffman, Joel M.

doi:10.1016/0030-4018(83)90336-x

Cited by 46 publications

(14 citation statements)

References 8 publications

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“…Despite the very long history and wide use of coumarin dyes (figure 2), their structure-property relationships are not studied in depth [67,[70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89]. Large Stokes shifts in coumarins are provided by using intramolecular charge transfer (ICT) and (rarely) excited state intramolecular proton transfer (ESIPT) mechanisms [66].…”

Section: Fluorophores With Large Stokes Shifts Caused By Intramoleculmentioning

confidence: 99%

Fluorescent dyes with large Stokes shifts for super-resolution optical microscopy of biological objects: a review

Sednev

Belov

Hell

2015

Methods Appl. Fluoresc.

188

177

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The review deals with commercially available organic dyes possessing large Stokes shifts and their applications as fluorescent labels in optical microscopy based on stimulated emission depletion (STED). STED microscopy breaks Abbe's diffraction barrier and provides optical resolution beyond the diffraction limit. STED microscopy is non-invasive and requires photostable fluorescent markers attached to biomolecules or other objects of interest. Up to now, in most biology-related STED experiments, bright and photoresistant dyes with small Stokes shifts of 20-40 nm were used. The rapid progress in STED microscopy showed that organic fluorophores possessing large Stokes shifts are indispensable in multi-color super-resolution techniques. The ultimate result of the imaging relies on the optimal combination of a dye, the bio-conjugation procedure and the performance of the optical microscope. Modern bioconjugation methods, basics of STED microscopy, as well as structures and spectral properties of the presently available fluorescent markers are reviewed and discussed. In particular, the spectral properties of the commercial dyes are tabulated and correlated with the available depletion wavelengths found in STED microscopes produced by LEICA Microsytems, Abberior Instruments and Picoquant GmbH.

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Section: Fluorophores With Large Stokes Shifts Caused By Intramoleculmentioning

confidence: 99%

Fluorescent dyes with large Stokes shifts for super-resolution optical microscopy of biological objects: a review

Sednev

Belov

Hell

2015

Methods Appl. Fluoresc.

188

177

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“…1͒, a more fluorescent dye (PLϳ90%) with better color could be realized by virtue of its structural coplanarity which aligns the p-orbital of nitrogen to overlap with the -orbitals of the phenyl ring for more effective conjugation. 11 The enhancement of quantum efficiency is believed to be derived from diminishing the nonradiative deactivation of the excited state by reducing the internal mobility inherent in the ͓Et 2 N-͔ moiety of C-6. that its emission, now about 15 nm redshifted ͑to 519 nm͒ from that of C-6, is closer to the peak of eye sensitivity near 550 nm.…”

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confidence: 99%

Efficient green organic light-emitting diodes with stericly hindered coumarin dopants

Chen

Tang

2001

Applied Physics Letters

129

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We have discovered two stericly hindered green coumarin derivatives which showed significantly better thermal stability and overall electroluminescence (EL) performance than those of the corresponding 3-(2-benzothiazolyl)-7-(diethylamino)-2H-1-benzopyran-2-one (C-6) and 10-(2-benzothiazolyl)-1,1,7,7-tetramethyl- 2,3,6,7-tetrahydro-1H,5H,11H-benzo[l]pyrano[6,7, 8-ij] quinolizin-11-one (C-545T). The strategic incorporation of bulky spacer t-butyl groups in these dopants considerably delays the onset of concentration quenching. In particular, 10-[2(5,7-di-t-butyl)benzothiazolyl]-1,1,7,7-tetramethyl-2,3,6,7-tetrahydro-1H,5H,11H-benzo-[l]pyrano[6,7,8-ij]quinolizin-11-one (C-545TB) with its superb thermal stability (Tg=142 °C; Td=327 °C), high luminance efficiency (∼13 cd/A), good Commission Interationale d’Eclairage (CIE) coordinates (x=0.30; y=0.64) and a nearly flat EL efficiency dependence on drive current stands out as one of the best choice of green dopants for use in the passive-matrix organic light-emitting diode displays.

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“…Fluorescence quantum yield (QY) of the investigated mixtures was calculated by taking the values of the absorbance at the excitation wavelength (435.8 nm), the integrals of the fluorescence intensity over the visual band, and the values of the solvent refractive index. The fluorescence quantum yield of TTFPP in acetone and chloroform was determined using coumarin 510 in ethanol-water (50:50) solution as a standard (QY = 0.98, [28]). To avoid reabsorption of the emitted light in this case, the molar fraction of the dye was chosen to be of the order 1 Â 10 À7 .…”

Section: Methodsmentioning

confidence: 99%

“…Molar extinction (a) and fluorescence intensity (b) of TTFPP in chloroform(1)and acetone(2), perylene in cyclohexane (3) (data from[28]), and coumarin 510 fluorescence standard (QY = 0.98) in ethanol-water (50:50) (4).…”

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confidence: 99%

Electronic absorption and fluorescence of new tetrafluoro-pentenyl-perylene in isotropic solvents, liquid crystal layers, and LB films

Wolarz

Mykowska

Martyński

et al. 2009

Journal of Molecular Structure

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Lasing and fluorescent characteristics of nine, new, flashlamp-pumpable, coumarin dyes in ethanol and ethanol: Water

Cited by 46 publications

References 8 publications

Fluorescent dyes with large Stokes shifts for super-resolution optical microscopy of biological objects: a review

Fluorescent dyes with large Stokes shifts for super-resolution optical microscopy of biological objects: a review

Efficient green organic light-emitting diodes with stericly hindered coumarin dopants

Electronic absorption and fluorescence of new tetrafluoro-pentenyl-perylene in isotropic solvents, liquid crystal layers, and LB films

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