Hassoon, Salah published the artcileElectron Transfer Photoreduction of 5,7-Diiodo-3-butoxy-6-fluorone with Tetrabutylammonium Triphenylbutylborate and N,N-Dimethyl-2,6-diisopropylaniline, Computed Properties of 2909-77-5, the publication is Journal of Physical Chemistry (1995), 99(23), 9416-24, database is CAplus.
The photoreduction of 5,7-diiodo-3-butoxy-6-fluorone (DIBF) in the presence of the electron donors, tetrabutylammonium triphenylbutylborate (BORATE), and N,N-dimethyl-2,6-diisopropylaniline (DIDMA) was studied in acetonitrile solution The transient phenomena examined using nanosecond laser flash photolysis confirm that the reduction is a one-electron transfer process from the electron donor to the excited triplet state of the dye. Triplet quenching rate constants were measured for BORATE and DIDMA as well as oxygen. The relative quenching rates for oxygen and DIDMA are ¡Ö20:1. The electron transfer rates calculated are 6.7 ¡Á 107 and 1.2 ¡Á 108 s-1 in the BORATE and DIDMA systems, resp. The dye radical anion (DIBF?, ¦Ëmax ¡Ö 420 nm) formed by the electron transfer reaction is the only product obtained in the BORATE case. However, with DIDMA the dye “neutral” radical (DIBF?, ¦Ëmax ¡Ö 360 nm) was detected as the only product. DIBF? formed after protonation of DIBF?- by proton transfer from the amino cation radical. This implies that the proton transfer is too fast to measure on the nanosecond time scale. This is the first such observation in these systems. Singlet oxygen formed by oxygen quenching of the dye triplet was found to be quenched by the electron donors via an electron transfer process also. No quenching of DIBF triplet occurred in the presence of the electron acceptor (4-octyloxyphenyl)phenyliodonium hexafluoroantimonate (OPPI). The principal photobleached products detected by HPLC were reduced quinomethines in the DIDMA case and the ammonium salts of the reduced quinomethines in the BORATE case. Reoxygenation of these products regenerates the original dye in a reaction the rate of which depends on the polarity of the solution However, the reoxygenation of the quinomethines is faster than that of their ammonium salts under the same conditions.
Journal of Physical Chemistry published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Computed Properties of 2909-77-5.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia