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Observation of Zinc Phthalocyanine Aggregates on a Water Surface Using Grazing Incidence X-ray Scattering

Observation of Zinc Phthalocyanine Aggregates on a Water Surface Using Grazing Incidence X-ray Scattering

Seán M O'Flaherty, Lutz Wiegart, Oleg Konovalov, Bernd Struth

Langmuir. 2005 Nov 22;21(24):11161-6.

PMID: 16285785

Abstract:

Reported here are the structural properties of a zinc 2,9,16,23-tetra-tert-butyl-29H,31H-phthalocyanine Langmuir monolayer on a water surface under progressive lateral compression investigated by grazing incidence X-ray scattering. Grazing incidence diffuse X-ray scattering out of the specular plane (GIXOS) is exploited to determine specular reflectivity-like information where the phase change of flat-lying molecules on the surface to edge-standing molecules perpendicular to the surface is directly observed. Furthermore, grazing incident X-ray diffraction (GIXD) is used to investigate the in-plane ordering of the system where it has been found that in the high-density state (approximately 0.35 nm2 per molecule) the system can be considered to be a monolayer consisting of arrays of side-by-side lying cofacially aggregated cylindrical rodlike entities.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP35984931	2,9,16,23-Tetra-tert-butyl-29H,31H-phthalocyanine		35984-93-1	Price
AP39001655	Zinc 2,9,16,23-tetra-tert-butyl-29H,31H-phthalocyanine		39001-65-5	Price

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