88223-35-2Relevant articles and documents
Phthalocyanine-cored fluorophores with fluorene-containing peripheral two-photon antennae as photosensitizers for singlet oxygen generation
Abid, Seifallah,Hassine, Sarra Ben,Richy, Nicolas,Camerel, Franck,Jamoussi, Bassem,Blanchard-Desce, Mireille,Mongin, Olivier,Paul, Frédéric,Paul-Roth, Christine O.
, (2020)
A series of free base and Zn(II) phthalocyanines featuring fluorenyl antennae linked by methoxy or oxo bridges to the phthalocyanine core (Pc) were synthesized and characterized. Selected linear and nonlinear (two-photon absorption) optical properties of these new compounds were subsequently studied. As previously observed for related porphyrin dendrimers bearing 2-fluorenyl peripheral dendrons, an efficient energy transfer occurs from the peripheral antennae to the central phthalocyanine core following excitation in the fluorenyl-based π–π* absorption band of these chromophores. Once excited, these compounds relax to the ground state, mostly by emitting intense red light or by undergoing intersystem crossing. As a result, the tetrafunctionalized Zn(II) phthalocyanines are fluorescent, but can also efficiently photosensitize molecular oxygen in tetrahydrofurane (THF), forming singlet oxygen with nearly comparable yields to bare Zn(II) phthalocyanine (ZnPc). In comparison with the latter complex, the positive role of the fluorenyl-containing antennae on one- and two-photon brightness (2PA) is presently demonstrated when appended in peripheral (β) position to the phthalocyanine core. Furthermore, when compared to known porphyrin analogues, the interest in replacing the porphyrin by a phthalocyanine as the central core to obtain more fluorescent two-photon oxygen photosensitizers is clearly established. As such, this contribution paves the way for the future development of innovative biphotonic photosensitizers usable in theranostics.
Two-Photon Absorption and Cell Imaging of Fluorene-Functionalized Epicocconone Analogues
Oger, Samuel,Schapman, Damien,Mougeot, Romain,Leleu, Stéphane,Lascoux, No?lle,Baldeck, Patrice,Bénard, Magalie,Gallavardin, Thibault,Galas, Ludovic,Franck, Xavier
, p. 10954 - 10964 (2019)
Epicocconone 1 is a natural chromophore isolated from the fungus Epicoccum nigrum that has shown applications in proteomics and fluorescent microscopy thanks to its unique pro-fluorescence properties. The modification of the skeleton of the natural produc
Novel hole transport material applied to solid-state dye-sensitized solar cell
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Paragraph 0036-0039, (2020/08/18)
According to the design of the invention, a trifluorene ammonia compound is applied as a hole transport material to a solid-state dye-sensitized solar cell. Compared with common Spiro-OMeTAD, the compound has the characteristics that the molecular structure is simple, the solubility in an organic solvent is good, the compound and cations do not generate spectral competition with a photosensitizerand the like. The compound has a proper HOMO energy level and can be used as a hole transport material to be applied to a solid-state dye-sensitized solar cell.