9-Anthryl and 1-pyrenyl groups as reporters of local environments and diffusion of two N,N-dialkylanilines in polyethylene films. Excited state lifetimes determine spatial information

Photochemical and Photophysical Studies of and in Bulk Polymers

“…11.12 ). Analogous Although good fi ts to the diffusion data for N , N -dimethylaniline ( DMA ) were obtained from Equation 11.12 , the histogram for N , N -dioctadecylaniline ( DODA ) required a modifi ed expression with two diffusion coeffi cients, D 1 and D 2, and their fractional contributions, C and (1 -C ), respectively, 94 indicating that two parallel pathways for diffusion are occurring ( Fig. 11.12 ).…”

Use of Fluorescence Spectroscopy To Study Polymeric Materials with Porous Structure Based on Imprinting by Self-Assembled Fibrillar Networks

“…However, our system does not seem to be suitable for the tested method. We tried to measure out-diffusion of a probe such as N , N -dimethylaniline, as done by Weiss and co-workers in polyethylene films, , but not enough signal was obtained from our methacrylic films, probably as a result of their high cross-linking degree. Nevertheless, we carried out a controlled monitorization of the diffusion of RhB through the microstructure of P04, P06, P10, P12, and P14, which demonstrates that the mass-transport abilities of such polymers are directly dependent on the amount of organogelator employed in their synthesis.…”