首页>
外国专利>
Producing organic films with innovative optical characteristics in the form of hypsochromic and/or bathochromic wavelength shifts, comprises dissolving nucleation material and polymethine dye molecules in an aprotic apolar organic solvent
Producing organic films with innovative optical characteristics in the form of hypsochromic and/or bathochromic wavelength shifts, comprises dissolving nucleation material and polymethine dye molecules in an aprotic apolar organic solvent
The method for producing organic films with innovative optical characteristics in the form of hypsochromic and/or bathochromic wavelength shifts, where the film comprises polymethine dye aggregate such as H-aggregate and/or J-aggregate on a substrate, comprises dissolving a nucleation material and polymethine dye molecules in a first aprotic apolar organic solvent, which subsequently serves for coating the substrate, and forming a lateral separate structure comprising separate nucleation material cluster and polymethine dye molecules cluster by evaporating the first solvent. The method for producing organic films with innovative optical characteristics in the form of hypsochromic and/or bathochromic wavelength shifts, where the film comprises polymethine dye aggregate such as H-aggregate and/or J-aggregate on a substrate, comprises dissolving a nucleation material and polymethine dye molecules in a first aprotic apolar organic solvent, which subsequently serves for coating the substrate, forming a lateral separate structure comprising separate nucleation material cluster and polymethine dye molecules cluster by evaporating the first solvent, resulting a spontaneous formation of H-aggregates from polymethine dye molecules, selectively and partially or completely dissolving the nucleation material cluster from the substrate using a second aprotic apolar organic solvent, so that a spontaneous progression of phase conversion of H-aggregates to J-aggregates occurs, and selectively and completely removing the organic polymethine dye molecules in the polymethine dye aggregate with a third solvent before the substrate is immersed in a further diluted solvent comprising polymethine dye molecules with the remaining nucleation material cluster within the lateral separate structure , so that a spontaneous formation of H-aggregates from polymethine dye molecules results on the nucleation material cluster. The polymethine dye molecules in the diluted solvent and the polymethine dye molecules of the first solvent are differently selected. The aprotic apolar organic solvent is selected with a dielectric constant of 5-6. The first aprotic apolar organic solvent is chlorobenzene solution, which is mixed with 1.5-3.5 wt.% of a mixture of nucleation material and polymethine dye molecules in a molar mixing ratio of 1:1-1.5:1. The nucleation material is particles with highly ordered surfaces comprising functionalized fullerene derivative and carbon nanotubes or nanocrystalline highly ordered semiconductor surfaces, is a highly oriented semiconductor single-crystal nanoparticle, and is crystalline nanorod and crystalline nanotubes. A spin coating, dip-coating, screen printing, doctor blading, ink jet printing, spray coating or curtain-coating is used as coating process to produce polymethine dye aggregates. The spin coating is carried out with rotations of 150-4000 rotations per minute. An independent claim is included for an organic film that is applied on the substrate.
展开▼
