Effect of C60 as a Filler on the Morphology of Polymer−Salt Complexes Based on Poly(ethylene oxide) and LiCF3SO3

• The inclusion of C60 as a filler in complexes of paly(ethylene oxide) (PEO) and LiCF3SO3 salt reduces the degree of crystallinity of the material at ambient temperature. The observed effects are manifested as changes in characteristic vibrational modes of the crystalline polymer in FT-Raman spectra over a range of temperatures. The introduction of relatively small amounts of C60 also stabilizes ionic substructures present in these systems. Interestingly, no internal modes of the C60 molecule are affected by dissolution in PEO or by the presence of varying amounts of LiCF3SO3 salt in the matrix. From the absence of a shift in the C60:s charge-transfer-sensitive Ag(2) mode, in particular, it appears as though C60 essentially acts as an inert filler in these complexes.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

poly(ethylene oxide)

LiCF3SO3

triflate

C-60

C60

fullerene

Raman

alkali-metal salts

ionic interactions

electrolytes

conductivity

association

transport

polyether

li

lithium

spectra

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