TY - JOUR
T1 - Structure and composition of thin films of peripherally unsubstituted phthalocyanine deposited using the Langmuir-Blodgett technique
AU - George, R. D.
AU - McMillan, P. F.
AU - Burrows, Veronica
AU - Hervig, Richard
N1 - Funding Information:
Science Foundation (NSF) Equipment Grant ECS-8706140. The micro Raman studies were made available through NSF Grant EAR-8616990 to P,M. The authors also gratefully acknowledge the Center for Solid State Electronics Research for LB film preparation support and the Center for Solid State Science for donation of materials and assistance in substrate preparation.
PY - 1991/8/30
Y1 - 1991/8/30
N2 - Langmuir-Blodgett films of peripherally unsubstituted phthalocyanine (Pc) have been deposited on substrates of silicon, aluminized silicon and gallium arsenide by means of a precursor compound, dilithium phthalocyanine (Li2Pc), from an aqueous subphase. The resulting films have been chemically and structurally characterized using surface IR reflection spectroscopy, Raman spectroscopy, and secondary ion mass spectrometry. The results show that the films contain both Li2Pc and metal-free phthalocyanine, indicating that hydrolysis of Li2Pc by the aqueous subphase is not complete, contrary to previous assumptions in the literature. The resulting films are brittle and polycrystalline in nature, with little or no preferred molecular orientation. This behavior is thought to be due to the molecular association of the Li2Pc both in the spreading solution and on the aqueous subphase.
AB - Langmuir-Blodgett films of peripherally unsubstituted phthalocyanine (Pc) have been deposited on substrates of silicon, aluminized silicon and gallium arsenide by means of a precursor compound, dilithium phthalocyanine (Li2Pc), from an aqueous subphase. The resulting films have been chemically and structurally characterized using surface IR reflection spectroscopy, Raman spectroscopy, and secondary ion mass spectrometry. The results show that the films contain both Li2Pc and metal-free phthalocyanine, indicating that hydrolysis of Li2Pc by the aqueous subphase is not complete, contrary to previous assumptions in the literature. The resulting films are brittle and polycrystalline in nature, with little or no preferred molecular orientation. This behavior is thought to be due to the molecular association of the Li2Pc both in the spreading solution and on the aqueous subphase.
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U2 - 10.1016/0040-6090(91)90138-N
DO - 10.1016/0040-6090(91)90138-N
M3 - Article
AN - SCOPUS:0026205138
SN - 0040-6090
VL - 203
SP - 303
EP - 316
JO - Thin Solid Films
JF - Thin Solid Films
IS - 2
ER -