MOLECULAR-ORIENTATION OF OCTAALKOXYPHTHALOCYANINE DERIVATIVES IN LANGMUIR-BLODGETT-FILMS

Electron spin resonance and electronic absorption spectra were measure d to obtain structural information concerning the out-of-plane anisotr opy of Cu(II) 1,4,8,11,15,18,22,25-octaalkoxyphthalocy (CnPcCu: n = 6, 10, 18) in Langmuir-Blodgett (LB) films. It was revealed that tilt an gles with respect to a substrate surface and the aggregation mode of t he macrocyclic rings in LB films depend on the length of alkoxy substi tuents as consistent with our previous results from pi-A isotherms, UV -visible absorption spectra and Brewster angle microscopy measurements . (C) 1998 Elsevier Science S.A. All rights reserved.