Bohne, C.; Abuin, E. B.; Scaiano, J. C. published the artcile< Triplet-triplet annihilation of pyrene derivatives as mobility probes in sodium 1,4-bis(2-ethylhexyl)sulfosuccinate/water/isooctane reversed micelles>, Electric Literature of 112-63-0, the main research area is micelle Aerosol OT pyrene fluorescence probe; triplet annihilation pyrene probe AOT micelle; reverse micelle interaction pyrene probe mobility.
Triplet-triplet annihilation (TTA) of pyrene probe mols. was used as a probe to study mobility of AOT reversed micelles in the microsecond time domain. Inter- and intramicellar processes can be differentiated by using different probe-to-micelle concentration ratios. The TTA for micelles containing only 1 pyrene mol. occurs with a rate constant of ∼1/3 the value for the diffusion controlled limit and it is ascribed to an intermicellar process in which the collision of triplets does not require the contact of water cores of the 2 micelles. The delayed fluorescence excimer-to-monomer (E/M) intensity ratio resulting from TTA is much lower than the one observed in homogeneous solution, indicating that the microenvironment for triplet-triplet encounter is more rigid when compared to solutions The TTA from micelles containing >1 probe (multiple occupancy) show initially a higher E/M intensity ratio for the delayed emission than the one observed for intermicellar processes, indicating that when 2 pyrenes are in the same micelle a more favorable geometry for excimer formation exists in the triplet-triplet encounter complex. A decrease with time of the E/M intensity ratio is observed under multiple occupancy conditions.
Langmuir published new progress about Diffusion. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics