Miura, Tomoaki published the artcileSupramolecular Control of the Spin-Dependent Dynamics of Long-Lived Charge-Separated States at the Micellar Interface As Studied by Magnetic Field Effect, Recommanded Product: 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, the main research area is supramol spin dynamics charge separation micellar interface magnetic field.
Spin selectivity in long-lived charge separation at the micellar interface is studied using the magnetic field effect (MFE). An amphiphilic viologen is complexed with a nonionic surfactant to form a supramol. acceptor cage, of which the size is controlled by the acceptor concentration, as confirmed by dynamic light scattering measurement. Photoinduced electron transfer (ET) from a guest polyaromatic mol. to the viologen moiety is observed spin-dependently with time-resolved fluorescence (trFL) and transient absorption (TA). A neg. MFE on the radical yield is successfully observed, which indicates generation of singlet-born long-lived radical pair that is realized by supramol. control of the donor-acceptor (D-A) distances. The dominance of the singlet-precursor MFE is sensitive to the acceptor concentration, which presumably affects the D-A distance as well as the cage size. However, theor. anal. of the MFE gives large recombination rates of ca. 108 s-1, which indicate the contribution of spin-allowed recombination of the pseudocontact radical pair generated by still active in-cage diffusion. Dependence of the viologen concentration and alkyl chain length on the recombination and escape dynamics is discussed in terms of precursor spin states and the microenvironments in the cage.
Journal of Physical Chemistry B published new progress about Charge separation. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Recommanded Product: 1,1-Di-n-octyl-4,4-bipyridinium Dibromide.