This article is cited in 5 papers

Fullerenes

Photopolymerization in the fullerene layers of the molecular donor–acceptor complex $\{$Pt($n$Pr$_{2}dtc$)$_{2}\}$ $\cdot$ (C$_{60}$)$_{2}$

K. P. Meletov

Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region

Abstract: We measured Raman spectra in crystals of molecular donor–acceptor fullerene complexes $\{Me$($n$Pr$_{2}dtc$)$_{2}\}$ $\cdot$ (C$_{60}$)$_{2}$ ($Me$ = Ni, Cu, Pt). In the spectra of the $\{$Pt($n$Pr$_{2}dtc$)$_{2}\}$ $\cdot$ (C$_{60}$)$_{2}$ complex under prolonged irradiation with a laser with $\lambda$ = 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 $\pm$ 0.03) eV; the dimers are destructed to a concentration of 1% within 15 min at $\sim$114$^{\circ}$C.

Received: 26.04.2018

DOI: 10.21883/FTT.2018.10.46539.119

 English version: Physics of the Solid State, 2018, 60:10, 2103–2108

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