[60]fullerene radical cation: Reactions and mechanism

Siedschlag, Christina; Luftmann, Heinrich; Wolff, Christian; Mattay, Jochen

doi:10.1016/s0040-4020(99)00395-6

Cited by 40 publications

(21 citation statements)

References 16 publications

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“…116 For instance, the reaction with propionaldehyde 37 affords 38 , consistent with a process involving H-atom abstraction by C 60 •+ followed by attack of the resulting acyl radical 40 on H-C 60 + 39 . 117,118 …”

Section: Photoinduced Electron Transfermentioning

confidence: 99%

Dual Catalysis Strategies in Photochemical Synthesis

2016

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The interaction between an electronically excited photocatalyst and an organic molecule can result in the genertion of a diverse array of reactive intermediates that can be manipulated in a variety of ways to result in synthetically useful bond constructions. This Review summarizes dual-catalyst strategies that have been applied to synthetic photochemistry. Mechanistically distinct modes of photocatalysis are discussed, including photoinduced electron transfer, hydrogen atom transfer, and energy transfer. We focus upon the cooperative interactions of photocatalysts with redox mediators, Lewis and Brønsted acids, organocatalysts, enzymes, and transition metal complexes.

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Section: Photoinduced Electron Transfermentioning

confidence: 99%

Dual Catalysis Strategies in Photochemical Synthesis

2016

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“…This electron transfer proceeds efficiently only by addition of promoters such as Sc(OTf) 3 or triflic acid, both of which strongly enhance the electron-transfer process [72,73]. Another possibility to produce the cation is the electron transfer from C 60 to the singlet excited state of a strong electron acceptor such as N-methylacridinium hexafluorophosphate (NMA + ) [74,75], triphenylpyriliumtetrafluoroborate (TPP + ) [74,75] or 9,10-dicyanoanthracene [76]. The latter electron transfer can also be mediated by the biphenyl radical cation produced by PET from biphenyl (BP) to photosensitizers (NMA + ) (Scheme 8.9) [74,75].…”

Section: Reactions With Strong Oxidizing Reagents and Acidsmentioning

confidence: 99%

“…Another possibility to produce the cation is the electron transfer from C 60 to the singlet excited state of a strong electron acceptor such as N-methylacridinium hexafluorophosphate (NMA + ) [74,75], triphenylpyriliumtetrafluoroborate (TPP + ) [74,75] or 9,10-dicyanoanthracene [76]. The latter electron transfer can also be mediated by the biphenyl radical cation produced by PET from biphenyl (BP) to photosensitizers (NMA + ) (Scheme 8.9) [74,75]. C 60 cations that are formed via PET are intermediates in various addition reactions, such as the addition of alcohols, ethers, aldehydes or hydrocarbons (RH in Scheme 8.9) [75][76][77].…”

Section: Reactions With Strong Oxidizing Reagents and Acidsmentioning

confidence: 99%

“…The latter electron transfer can also be mediated by the biphenyl radical cation produced by PET from biphenyl (BP) to photosensitizers (NMA + ) (Scheme 8.9) [74,75]. C 60 cations that are formed via PET are intermediates in various addition reactions, such as the addition of alcohols, ethers, aldehydes or hydrocarbons (RH in Scheme 8.9) [75][76][77].…”

Section: Reactions With Strong Oxidizing Reagents and Acidsmentioning

confidence: 99%

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Oxidation and Reactions with Electrophiles

Hirsch

Brettreich

2004

Fullerenes

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“…Кроме этого, представляет интерес использование лазерного излучения для разработки методов функционализации поверхности наноуглеродных материалов за счет фотостимулированных реакций. Так, например, в работе [12] наблюдали реакции фуллеренов с Н-донорными молекулами в присутствии фотосенсибилизаторов. С учетом того, что МУНТ способны поглощать электромагнитное излучение в широком диапазоне длин волн [13], их функционализация за счет лазерно-стимулированных реакций представляет большой интерес.…”

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Analytical studies of suspension acoustics

Galimzyanov

Shagapov

2019

MFS

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The one-dimensional unsteady flow of the suspension is considered taking into account the standard assumptions for this problems: the mixture is monodisperse, there is no crushing and sticking of particles, viscosity and thermal conductivity are essential only in the process of interfacial interaction. The mixture supposed perfect. The particles are taken absolutely solid and spherical, and the liquid is linearly compressible. The frictional force acting on a single spherical particle is taken into account. The solution to the original system is sought in the form of a traveling wave. On the basis of one-dimensional unsteady equations of fluid flow with solid particles dispersion relations are written out and formulas for phase velocities are derived. Formulas for the attenuation coefficient of the perturbation frequency are got. It has been established that at low frequencies, depending on the magnitude of ρ̃0p0=ρ0p0/ρ0ℓ0 the equilibrium speed can be higher or lower than the speed of sound in the carrier phase. If the dispersed phase is heavier than the carrier phase (ρ̃0p0>1), then the equilibrium velocity exceeds the speed of sound. This is due to the fact that at low frequencies, when velocity equilibrium is realized, the compressibility of the mixture occurs only owing to the carrier phase, and the mixture becomes heavier (inertial) because of the content of the dispersed phase at (ρ̃0p0>1). When (ρ̃0p0<1), the mixture in contrast is lighter than the carrier phase, and the equilibrium velocity becomes higher than the speed of sound. At high frequencies the sound velocity does not depend on ρ̃0p0 and is equal to the sound velocity for the carrier phase.

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[60]fullerene radical cation: Reactions and mechanism

Cited by 40 publications

References 16 publications

Dual Catalysis Strategies in Photochemical Synthesis

Dual Catalysis Strategies in Photochemical Synthesis

Oxidation and Reactions with Electrophiles

Analytical studies of suspension acoustics

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