Da. Leigh et al., 2ND-HARMONIC GENERATION FROM LANGMUIR-BLODGETT-FILMS OF FULLERENE AZA-CROWN ETHERS AND THEIR POTASSIUM-ION COMPLEXES, Langmuir, 11(7), 1995, pp. 2334-2336
Langmuir and Langmuir-Blodgett (LB) films of a family of amphiphilic f
ullerene derivatives, the fullerene-aza-crown ethers, have been produc
ed. The use of high concentrations of K+ ions in the subphase leads to
Langmuir films (type II) with significantly higher areas/molecule tha
n are obtained with no ions in the subphase (type I). The type I films
were transferred onto hydrophilic glass substrates and were found to
exhibit second-order nonlinear susceptibilities, chi(pp)((2)), of 2.3-
3.6 pm/V, the first chi(pp)((2)) values to be determined of LB films o
f fullerene derivatives.