TY - JOUR
T1 - Fabrication of ordered Langmuir-Blodgett multilayers of octa-n-alkoxy phthalocyanines
AU - Cook, M. J.
AU - Dunn, A. J.
AU - Daniel, M. F.
AU - Hart, R. C.O.
AU - Richardson, R. M.
AU - Roser, S. J.
PY - 1988/1/1
Y1 - 1988/1/1
N2 - The monolayer and deposition behaviour was investigated for a series of eight 1, 4, 8, 11, 15, 18, 22, 25-octa-alkoxy phthalocyanines. Relative to their metal-free analogues, the copper octapropoxy, copper octabutoxy and copper octapentyloxy phthalocyanines gave larger values for the average area per molecule at a standard surface pressure, showed much reduced hysteresis in the π-A isotherm and exhibited greater monolayer stability. The best deposition onto hydrophilic glass was observed for compounds bearing octabutoxy and octapentyloxy chains. These gave even, green multilayer films by either Y- or Z-type deposition. Films of copper and zinc octapentyloxy phthalocyanines gave X-ray diffraction patterns consistent with domains of layer structuring. The layer thickness was 24 Å for the former and 26 Å for the latter. These values correspond well to the maximum molecular dimension obtained from space-filling models and suggest that, where layer structuring occurs, the molecules are arranged with their planes approximately orthogonal to the substrate surface. The photostability of two examples was investigated.
AB - The monolayer and deposition behaviour was investigated for a series of eight 1, 4, 8, 11, 15, 18, 22, 25-octa-alkoxy phthalocyanines. Relative to their metal-free analogues, the copper octapropoxy, copper octabutoxy and copper octapentyloxy phthalocyanines gave larger values for the average area per molecule at a standard surface pressure, showed much reduced hysteresis in the π-A isotherm and exhibited greater monolayer stability. The best deposition onto hydrophilic glass was observed for compounds bearing octabutoxy and octapentyloxy chains. These gave even, green multilayer films by either Y- or Z-type deposition. Films of copper and zinc octapentyloxy phthalocyanines gave X-ray diffraction patterns consistent with domains of layer structuring. The layer thickness was 24 Å for the former and 26 Å for the latter. These values correspond well to the maximum molecular dimension obtained from space-filling models and suggest that, where layer structuring occurs, the molecules are arranged with their planes approximately orthogonal to the substrate surface. The photostability of two examples was investigated.
UR - http://www.scopus.com/inward/record.url?scp=0024002396&partnerID=8YFLogxK
U2 - 10.1016/0040-6090(88)90653-0
DO - 10.1016/0040-6090(88)90653-0
M3 - Article (Academic Journal)
AN - SCOPUS:0024002396
SN - 0040-6090
VL - 159
SP - 395
EP - 404
JO - Thin Solid Films
JF - Thin Solid Films
IS - 1-2
ER -