Open AccessФотополимеризация в слоях фуллерена молекулярного донорно-акцепторного комплекса \Pt(nPr-=SUB=-2-=/SUB=-dtc)-=SUB=-2-=/SUB=-\·(C-=SUB=-60-=/SUB=-)-=SUB=-2-=/SUB=-
Author(s) -
К.П. Мелетов
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.10.46539.119
Subject(s) - photopolymer , arrhenius equation , activation energy , kinetics , raman spectroscopy , acceptor , materials science , irradiation , analytical chemistry (journal) , photochemistry , chemistry , polymerization , polymer , optics , organic chemistry , physics , quantum mechanics , nuclear physics , composite material , condensed matter physics
We measured Raman spectra in crystals of molecular donor–acceptor fullerene complexes { Me ( n Pr_2 dtc )_2} · (C_60)_2 ( Me = Ni, Cu, Pt). In the spectra of the {Pt( n Pr_2 dtc )_2} · (C_60)_2 complex under prolonged irradiation with a laser with λ = 532 nm, characteristic changes in the photopolymerization of fullerene are observed, associated with the splitting of degenerate phonon Hg modes and softening of Ag modes of the C_60 molecule. The kinetics of photopolymerization under conditions of weak irradiation at room temperature is studied. It was found that thermal destruction of the photopolymer with increasing temperature leads to a decrease in its concentration in the final photopolymerization product. The kinetics of thermal destruction is described by the Arrhenius equation, with the activation energy E _A of (0.68 ± 0.03) eV; the dimers are destructed to a concentration of 1% within 15 min at ~114°C.