Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Photon upconversion

Wenger OS, Giidel HU (2003) Influence of Crystal Field Parameters on Near-Infrared to Visible Photon Upconversion in Ti2+ andNi2+ Doped Halide Lattices 106 59-70 Wheatley AEH, see Linton DJ (2003) 105 67-139 Wilhelm M, see Haubner R (2002) 102 1-46... [Pg.227]

Soukka T, Rantanen T, Kuningas K (2008) Photon upconversion in homogeneous fluorescence-based bioanalytical assays. Ann N Y Acad Sci 1130 188-200, Fluorescence Methods and Applications Spectroscopy, Imaging, and Probes... [Pg.34]

Ultrashort fluorescence lifetimes are best determined by photon upconversion. An excellent description of the technique for non-specialists wishing to set up an experiment is in preparation as part of a current IUPAC project on ultrafast intense laser chemistry .181 The time resolution is basically limited by the temporal width of the laser pulses that are being used. An intense gate pulse at frequency vq is mixed with the fluorescence at a frequency vp in a nonlinear optical crystal (Special Topic 3.1), to create a short pulse at the sum frequency i j. The gate pulse thus represents a time window for the fluorescence... [Pg.91]

Tiible 10.1 The difTereni two-photon upconversion processes, iheir mechanism, their efficiency normalized to incident power (1 W cm ), and an example, after Refs [1] and [2], Compare Fig. 10.2... [Pg.243]

Gudel HU, PoUnau M. Near-infrared to visible photon upconversion processes in lanthanide doped chloride, bromide and iodide lattices. J Alloys Compd 2000 303-304 307. [Pg.199]

Wong KL, Kwok WM, Wong WT, Phillips DL, Cheah KW. Green and red three-photon upconversion from polymeric lanthanide complexes. Angew Chem Int Ed 2004 43 4659. [Pg.199]

SuyvCT JF, Aebischer A, Biner D, Gemer P, Grimm J, Heer S, Kramer J, Reinhard C, Giidel HU (2005) Novel materials doped with trivalent lanthanides and transition metal ions showing near-infrared to visible photon upconversion. Opt Mater 27 1111-1130... [Pg.179]

Valiente R, Wenger O, Giidel HU (2000) New photon upconversion processes in Yb doped CsMnCla and RbMnCls. Chem Phys Lett 320 639-644... [Pg.231]

The LaOBr host has low phonon energy, which indicates that LaOBrEr " may have high luminescent efficiency [14]. Under excitation into the " In/2 level of Er ions by 980-nm laser, the two- and three-photon upconversion luminescence of... [Pg.287]

Figure 20 (a) Ovaview of sensitized triplet-triplet annihilation (TTA) photon upconversion taking place between triplet sensitizers... [Pg.1695]

Figure 21 Noncoherent photon upconversion in DMF solutions containing Pd(II) octaethylporphyrin and DPA using terrestrial sunlight and a long-pass filter (a and b) and in a fluorimeter using a Xe lamp/monochromator and long-pass filter (c) demonstrating efficient green-to-blue upconversion via the sensitized TTA process. Figure 21 Noncoherent photon upconversion in DMF solutions containing Pd(II) octaethylporphyrin and DPA using terrestrial sunlight and a long-pass filter (a and b) and in a fluorimeter using a Xe lamp/monochromator and long-pass filter (c) demonstrating efficient green-to-blue upconversion via the sensitized TTA process.
Rantanen T, Jarvenpaa ML, Vuojola J, Kuningas K, Soukka T (2008) Fluorescence-quenching-based enzyme-activity assay by using photon upconversion. Angew Chem Int Ed 47 3811-3813... [Pg.50]

Figure 7 Excitation and emission wavelengths of luminescence sources are plotted on a graph. Fluorophores are helow the reflectance line because they absorb a higher energy photon and emit a lower energy photon. Upconversion nanoparticles are fundamentally different a high-energy photon is emitted following absorption of two low-energy photons. (Reproduced with permission from Ref. 68. The Optical Society, 2008.)... Figure 7 Excitation and emission wavelengths of luminescence sources are plotted on a graph. Fluorophores are helow the reflectance line because they absorb a higher energy photon and emit a lower energy photon. Upconversion nanoparticles are fundamentally different a high-energy photon is emitted following absorption of two low-energy photons. (Reproduced with permission from Ref. 68. The Optical Society, 2008.)...
LIS 13] Lissau J.S., Nauroozi D., Santoni M.P. et ai, Anchoring energy acceptors to nanostructured Z1O2 enhances photon upconversion by sensitized triplet-triplet aiuiihilation under simulated solar flux . The Journal of Physical Chemistry C, vol. 117, pp. 14493-14501, 2013. [Pg.389]

See other pages where Photon upconversion is mentioned: [Pg.124]    [Pg.124]    [Pg.17]    [Pg.24]    [Pg.419]    [Pg.453]    [Pg.244]    [Pg.124]    [Pg.124]    [Pg.87]    [Pg.198]    [Pg.9]    [Pg.29]    [Pg.211]    [Pg.212]    [Pg.288]    [Pg.336]    [Pg.1695]    [Pg.29]    [Pg.32]   
See also in sourсe #XX -- [ Pg.91 ]



SEARCH



Upconversion

Upconversion photonic

© 2024 chempedia.info