Magnetic Properties of Langmuir–Blodgett (LB) Films: A Theoretical Study. III. LB Films Consisting of Different Types of Stable π-Monoradicals

Drebov, Nedko; Tyutyulkov, N.; Dietz, F.

doi:10.1021/la304416u

Cited by 2 publications

(1 citation statement)

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“…Investigation of properties' changes caused by molecular aggregation is difficult to evaluate by quantum-mechanics computer simulation even now [9,10]. Therefore, experimental techniques are almost only way to get a deep knowledge about properties of organized complex systems.…”

Section: Introductionmentioning

confidence: 99%

Self-aggregates formation of tetrachloroperylene acid esters in Langmuir and Langmuir-Blodgett films

Modlińska¹,

Chrzumnicka²,

Martyński³

2017

Opto-Electronics Review

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Using Langmuir and Langmuir-Blodgett techniques molecular films of chlorinated perylene derivatives, namely tetra-n-butyl-1,6,7,12-tetrachloroperylene-3,4,9,10-tetracarboxylate (PCn for n = 1, 5, 9) have been studied. The Langmuir films of pure compounds and mixed with liquid crystalline 4-octyl-4cyanobiphenyl (8CB) were characterized by surface pressure-mean molecular area isotherms. An additive rule reveals miscibility of all the dyes with 8CB but shows different types of intermolecular interaction forces. The pure and mixed Langmuir films were transferred onto quartz plates and characterized spectroscopically. Absorption and fluorescence spectra were recorded for the samples in form of diluted chloroform solution, the dye with 8CB mixtures in monomolecular Langmuir-Blodgett films and in liquid crystal cells. Different tendency to aggregation of the dye with short and long alkyl chains was observed. It is shown that the dye molecule stacking and aggregation of the chlorinated perylene dyes depend on the dye concentration and are related to the torsion of the perylene core.

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Section: Introductionmentioning

confidence: 99%