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Multilayer Self-Assemblies as Electronic and Optical Materials

Published online by Cambridge University Press:  10 February 2011

DeQuan Li,
M. Lütt,
Xiaobo Shi and
M. R. Fitzsimmons
DeQuan Li
Affiliation:
Chemical Science and Technology Division (CST-4) and Manuel Lujan Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, NM 87545
M. Lütt
Affiliation:
Chemical Science and Technology Division (CST-4) and Manuel Lujan Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, NM 87545
Xiaobo Shi
Affiliation:
Chemical Science and Technology Division (CST-4) and Manuel Lujan Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, NM 87545
M. R. Fitzsimmons
Affiliation:
Chemical Science and Technology Division (CST-4) and Manuel Lujan Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, NM 87545
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Abstract

The layer-by-layer growth of film structures consisting of sequential depositions of oppositely charged polymers and macrocycles (ring-shaped molecules) have been constructed using molecular self-assembly techniques. These self-assembled thin films were characterized with X-ray reflectometry, which yielded (1) the average electron density, (2) the average thicknesses, and (3) the roughness of the growth surface of the self-assembled multilayer of macrocycles and polymers. These observations suggest that inorganic-organic interactions play an important role during the initial stages of thin-film growth, but less so as the thin film becomes thicker. Optical absorption techniques were also used to characterize the self-assembled multilayers. Phorphyrin and phthalocyanine derivatives were chosen as the building blocks of the self-assembled multilayers because of their interesting optical properties.

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