Adamantane-containing polymers

In addition, PAs from adamantane substituted tri-phenylamine (TPA) moiety have been prepared to study the effect of the fluorinated monomer on the final properties of PAs (Figure 4.27) [63]. All these TPA-containing polymers showed high gas permeabihty and permselectivity. But among these, the PA (PA-xl) derived from 4,4 -(hexafluoroisopropy lidene)te(benzoic acid) exhibited the highest gas... 

Adamantane containing epoxy compounds and unsaturated adaman-tane compounds reacted with peracids to give polymers [157]. 

Hexamethylenetetramine is a co-polymer (oligomer really such as those we met in Chapter 52) of formaldehyde and ammonia containing six formaldehyde and four ammonia molecules. It has a beautifully symmetrical cage structure belonging to the adamantane series. 

Wegner et al. developed a class of polymers containing sequences linked by ethylene, vinylene or ethynylene groups [130]. PPV-like polymers containing an adamantane spacer group (Scheme 50) [131] are also accessible via the palladium catalyzed Suzuki reaction. The polymers possessed excellent thermal stability and shows an onset of thermal decomposition temperature at 362 °C and a Tg at 151 °C due to the chain rigidity. 

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