2,4,6-Triphenylpyrylium Tetrafluoroborate as an Electron-Transfer Photosensitizer

Miranda, Miguel A.; García, H.

doi:10.1021/cr00028a009

Cited by 341 publications

(272 citation statements)

References 60 publications

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“…2,4,6-Triphenylpyrylium tetrafluoroborate is a dye that absorbs from 360 to 430 nm, presents intense emission at 470 nm, and has been previously used as fluorescence standard. 23 The procedure for determining φ fl has been included in the Supporting Information, and the obtained φ fl are reported in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Photophysics of Fluorene Copolymers: Control of Fluorescence and Charge Separation by the Presence of Carbazole, Oxadiazole, or Biphenyl Units

Miguel¹,

Ferrer²,

Teruel³

et al. 2009

J. Phys. Chem. C

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A set of fluorene copolymers designed to introduce electron donor/acceptor structures in the polymer chain that could eventually produce more efficient charge separation with long lifetimes has been prepared. To validate our approach, herein we report photoluminescence and laser flash photolysis measurements of the series of alternating specially functionalized fluorene copolymers. The copolymers contain 9,9-dioctylfluorene and N-octylcarbazole, oxadiazole, and oxadiazole−octafluorobiphenyl−oxadiazole units. It appears that the copolymer with the longest charge separated state lifetime and the highest charge separation quantum yield of the series is an alternating copolymer of a N-octylcarbazole and trifluorene units in which two fluorenes were attached with hydroxyhexyl side groups and the central fluorene with octyl side group at C-9 positions, respectively. These photophysical data suggest that this polymer a good candidate for photovoltaic cell and polymer light-emitting diode applications.

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Section: Resultsmentioning

confidence: 99%

Photophysics of Fluorene Copolymers: Control of Fluorescence and Charge Separation by the Presence of Carbazole, Oxadiazole, or Biphenyl Units

Miguel¹,

Ferrer²,

Teruel³

et al. 2009

J. Phys. Chem. C

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“…处于光激发态的吡喃盐是良好的氧化剂, 在光化学反应过程中, 不产生任何单线态氧或超氧化自由基, 这极大程度减少了副反应的发生, 简化了光反应过程, 因此可以作为一种高效的光敏化剂 [56] . 选择吡喃盐作为 [59] .…”

Section: 吡喃盐作为光敏化剂unclassified

Research Progress on the Synthesis and Application of Pyrylium Salts

Ye¹,

Wang²,

Gao³

et al. 2015

Chin. J. Org. Chem.

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Pyrylium salts are a type of heterocyclic compounds with unique chemical reactivity and photophysical properties. They show great potential applications in the many fields such as organic synthesis, biosensor and organic optoelectronic materials. Based on our recent research results, in this review, the developments in the synthesis of both α-non-active pyrylium salts and α-active pyrylium salts are summarized, and the applications of some typical pyrylium salts in the organic synthesis, photosensitizers, ion liquid and fluorescent sensor are exemplified.

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“…[11][12][13][14][15][16] Chemical activation with cerium ammonium nitrate (CAN) affords stereoselectively cis-2,4-disubstituted tetrahydroquinolines from N-arylimines and N-vinylpyrrolidin-2-one or N-methyl-N-vinylacetamide. 11 Concomitant reduction of Ce 4+ to Ce 3+ supports ET catalysis.…”

Section: Azadienesmentioning

confidence: 99%

“…12 Likewise, the reaction works with tris(4-bromophenyl)aminium hexachloroantimonate (BAHA) as EToxidizing reagent. 13 Photoinduced electron transfer (PET) between N-arylimines and alkenes, using 2,4,6-triphenylpyrylium (TP + ) tetrafluoroborate as sensitizer (E* RED = 2.0 V vs SCE) 14 , has also been reported. 15,16 Under these conditions, styrene derivatives (E OX = 1.7-1.9 V vs SCE), affords substituted tetrahydroquinolines (stereoisomeric mixtures), together with aromatized quinolines.…”

Section: Azadienesmentioning

confidence: 99%

Hetero-cycloreversions Mediated by Photoinduced Electron Transfer

2014

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The Diels-Alder cycloaddition was discovered more than eight decades ago; however, it still remains one of the most versatile tools in synthetic organic chemistry, and its mechanism continues to attract considerable interest, both from the experimental and theoretical points of view. Specifically, hetero-Diels This account deals with electron transfer-mediated hetero cycloaddition and cycloreversion reactions. The attention has been focused on the ionization of oxadienes, azadienes and thiadienes, to give six-membered heterocycles, as well as on the oxidative and reductive electron transfer splitting of oxetanes, azetidines and thietanes.

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2,4,6-Triphenylpyrylium Tetrafluoroborate as an Electron-Transfer Photosensitizer

Cited by 341 publications

References 60 publications

Photophysics of Fluorene Copolymers: Control of Fluorescence and Charge Separation by the Presence of Carbazole, Oxadiazole, or Biphenyl Units

Photophysics of Fluorene Copolymers: Control of Fluorescence and Charge Separation by the Presence of Carbazole, Oxadiazole, or Biphenyl Units

Research Progress on the Synthesis and Application of Pyrylium Salts

Hetero-cycloreversions Mediated by Photoinduced Electron Transfer

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