RT Journal Article
T1 Intramolecular energy transfer in naphthalene-containing polyesters: Experiment and simulation for model compounds derived from five aliphatic dicarboxylic acids and 2-hydroxynaphthalene
A1 Sánchez-Camacho, Ana
A1 Pozuelo de Diego, Javier
A1 Mendicuti, Francisco
A1 Mattice, Wayne L.
AB Steady-state fluorescence depolarization measurements and molecular dynamics simulations have been used to study the efficiency of nonradiative intramolecular singlet energy transfer between 2-naphthoxy groups, denoted N, in model compounds for polyesters derived from 2,6-dihydroxy-naphthalene and aliphatic dicarboxylic acids. The five bichromophoric compounds studied are the diesters abbreviated as N-OOC-(CH₂)n-COO-N;n = 2–6, which are condensation products obtained from 2-naphthol and aliphatic dicarboxylic acids. The anisotropy of the fluorescence of these compounds dispersed in a solid matrix of glassy poly(methyl methacrylate) indicates that there is nonradiative singlet energy transfer between naphthoxy groups. The efficiency of this transfer depends on<n>. A theoretical treatment using molecular dynamics simulations for the conformations of the five model compounds has been performed in order to evaluate the parameters related to the efficiency of the transfer. The experimental and theoretical variation of such parameters withn is consistent with the estimated Förster radius of 9–10 Å for this system.
PB Springer Verlag
SN 1053-0509
YR 1997
FD 1997-06
LK https://hdl.handle.net/10016/24505
UL https://hdl.handle.net/10016/24505
LA eng
NO This research was supported by Grants DGICYT PB94-0364 and UAH 017/95 (A.S.-C., J.P., and F.M.) and by NSF Grant DMR 9523278 (W.L.M.)
DS e-Archivo
RD 27 jul. 2024