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Topochemical copolymerization of fullerenes with cubane in their rotor‐stator phases
Author(s) -
Kováts É.,
Klupp G.,
Jakab E.,
Pekker Á.,
Kamarás K.,
Jalsovszky I.,
Pekker S.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200669195
Subject(s) - cubane , fullerene , copolymer , thermal stability , polymerization , polymer , isomerization , stator , chemistry , rotor (electric) , molecule , polymer chemistry , crystallography , materials science , organic chemistry , catalysis , physics , quantum mechanics
A new family of heteromolecular crystals has been described recently: the rotor‐stator phases of fullerenes with cubane. Cubane (C 8 H 8 ), the stator component of these materials is a highly strained molecule which decomposes to higher stability C 8 H 8 hydrocarbons at 200 °C. This unimolecular isomerization takes also place in the rotor–stator phases, inducing a single phase topochemical reaction with the surrounding fullerenes. The resulting material is a random copolymer, percolating in the primitive cubic sublattices of the parent crystals. We followed the polymerization by HPLC, IR and UV–VIS spectroscopy, and determined the thermal stability by TG‐MS analysis. The polymers are insoluble, and stable up to 400 °C. At this temperature they start to decompose while preserving their crystalline appearance. The influence of the side groups of substituted cubanes on the polymerization will also be discussed. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)