Langmuir-Blodgett (LB) films of tetra-tert-butyl-substituted copper azaporphyrines, namely phthalocyanine (CuPc′), tetra-3-nitrophthalocyanine (CuPc*) and porphyrazine (CuPaz′), are studied by small-angle scattering technique. Two kinds of systems are under investigation: first, the CuPc′/Cd-stearate-d35 superlattices; second, the LB films of CuPc′, CuPc* and CuPaz′ doped with benzene-d6. X-ray diffraction patterns of the superlattices exhibit bilayer structural units indicating existence of not only 1D but also 3D nano-aggegates of CuPc′. The neutron reflectivity study on the films heavily doped with benzene-d6 indicates that π-deficiency and size of the azaporphyrine nuclei favor interactions between the nano-aggregates.
Small-angle X-ray scattering and neutron reflectivity studies of Langmuir-Blodgett films of copper tetra-tert-butyl-azaporphyrines / L. A., Valkova; A., Menelle; N., Borovkov; V., Erokhin; Pisani, Michela; F., Ciuchi; Carsughi, Flavio; Spinozzi, Francesco; M., Pergolini; R., Padke; S., Bernstorff; Rustichelli, Franco. - In: JOURNAL OF APPLIED CRYSTALLOGRAPHY. - ISSN 0021-8898. - STAMPA. - 36:(2003), pp. 758-762.
Small-angle X-ray scattering and neutron reflectivity studies of Langmuir-Blodgett films of copper tetra-tert-butyl-azaporphyrines
PISANI, MICHELA;CARSUGHI, Flavio;SPINOZZI, Francesco;RUSTICHELLI, Franco
2003-01-01
Abstract
Langmuir-Blodgett (LB) films of tetra-tert-butyl-substituted copper azaporphyrines, namely phthalocyanine (CuPc′), tetra-3-nitrophthalocyanine (CuPc*) and porphyrazine (CuPaz′), are studied by small-angle scattering technique. Two kinds of systems are under investigation: first, the CuPc′/Cd-stearate-d35 superlattices; second, the LB films of CuPc′, CuPc* and CuPaz′ doped with benzene-d6. X-ray diffraction patterns of the superlattices exhibit bilayer structural units indicating existence of not only 1D but also 3D nano-aggegates of CuPc′. The neutron reflectivity study on the films heavily doped with benzene-d6 indicates that π-deficiency and size of the azaporphyrine nuclei favor interactions between the nano-aggregates.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
