6533b870fe1ef96bd12cefc0

RESEARCH PRODUCT

Structure and optical properties of a monolayer single crystal of a cyanine dye

Helmuth MöhwaldStefan Kirstein

subject

genetic structuresChemistryStereochemistryGeneral Physics and AstronomyEpitaxychemistry.chemical_compoundCrystallographyElectron diffractionPulmonary surfactantMonolayerMoleculePhysical and Theoretical ChemistryCyanineSpectroscopySingle crystal

description

Abstract Molecularly thin single crystals of a cyanine dye prepared by adsorption at a charged surfactant monolayer are studied by polarized optical spectroscopy and electron diffraction. Both techniques independently show a herringbone arrangement of the dye with the long axes of translationally inequivalent molecules forming an angle of 80°. The dye arranges in a primitive rectangular unit cell (a=21.2 A, b=6.14 A) adjacent to an epitaxially related hexagonal cell of the aliphatic tails of the surfactant.

https://doi.org/10.1016/0009-2614(92)85223-w