Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Martin Goez"'
Autor:
Martin Goez, Martin Vogtherr
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 1448-1454 (2013)
Electron transfer between the title compounds and their radical cations, which were generated by photoinduced electron transfer from the sulfides to excited 2,4,6-triphenylpyrylium cations, was investigated by time-resolved measurements of chemically
Externí odkaz:
https://doaj.org/article/15edb583b5364408a538f97c2d488112
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 437-446 (2013)
The photoreactions of diazabicyclo[2,2,2]octane (DABCO) and triisopropylamine (TIPA) with the sensitizers anthraquinone (AQ) and xanthone (XA) or benzophenone (BP) were investigated by time-resolved photo-CIDNP (photochemically induced dynamic nuclea
Externí odkaz:
https://doaj.org/article/d25aac052db14f70b1d6d64b0cb3ebf4
Autor:
Tim Kohlmann, Martin Goez
Publikováno v:
Physical Chemistry Chemical Physics. 24:5868-5878
Experiment is better than theory at identifying which neutral radicals NRx of the popular antioxidant quercetin and its derivatives are formed in a nonionic micelle and how they are deprotonated to give radical anions RANxy.
Autor:
Tim Kohlmann, Martin Goez
Publikováno v:
Physical Chemistry Chemical Physics. 23:9709-9714
We have studied the combined static and dynamic quenching of pyrene by methyl viologen in sodium alkyl sulfate micelles varying in volume by a factor of more than 4. Size controls were the temperature T (283 K-333 K) and the alkyl chain length n (9-1
Autor:
Tim Kohlmann, Martin Goez
Publikováno v:
Photochemical & Photobiological Sciences. 19:71-79
Through a formal-kinetic treatment, we rigorously derive the micellar occupations in the presence of fluorophore-quencher ground-state complexes and the resulting expressions for the time-dependent and stationary observables in the case of combined s
Autor:
Martin Goez, Tim Kohlmann
Publikováno v:
Physical Chemistry Chemical Physics. 21:10075-10085
We have conducted a theoretical and experimental study of Stern-Volmer experiments in micellar systems for the important case that fluorophore and quencher remain confined to their micelle during the luminescence decay (the "immobile probe/immobile q
Autor:
Martin Goez, Robert Naumann
Publikováno v:
Green Chemistry. 21:4470-4474
By complementing laser flash photolysis with product studies in visible-LED driven syntheses, we show that the one-electron reduced forms OER of tris(2,2′-bipyridine)ruthenium(II) and its more reactive derivative with 4,4′-dimethylated ligands ex
Autor:
Martin Goez, Robert Naumann
Publikováno v:
Chemistry - A European Journal. 24:17557-17567
Hydrated electrons are super-reductants, yet can be generated with visible light when two photons are pooled, most efficiently through storing the energy of the first photon in a radical pair formed by the reduction of an excited catalyst by a sacrif
Autor:
Tim Kohlmann, Martin Goez
Publikováno v:
Chemistry (Weinheim an Der Bergstrasse, Germany)
We have demonstrated the feasibility and ease of producing quercetin radicals by photoionization with a pulsed 355 nm laser. A conversion efficiency into radicals of 0.4 is routinely achieved throughout the pH range investigated (pH 2–9), and the r
Publikováno v:
Chemistry - A European Journal. 24:13259-13269
We have explored alkyl substitution of the ligands as a means to improve the performance of the title complexes in photoredox catalytic systems that produce synthetically useable amounts of hydrated electrons through photon pooling. Despite generatin