Search results for "dye molecules"

showing 2 items of 2 documents

Triggering dissymmetry in achiral dye molecules by chiral solvents: Circular dichroism experiments and DFT calculations

2011

The electronic circular dichroism spectra of achiral product “Lumogen F Red” (ROT-300) in four different chiral solvents are recorded at different temperatures. DFT calculations allow to identify two enantiomeric conformers for ROT-300. In vacuo they are equally populated; in chiral solvents one enantiomer prevails. Thermodynamic quantities involved in the chiral preference are derived. Chirality, 2011. © 2011 Wiley-Liss, Inc.

Models MolecularCircular dichroismMolecular ConformationPhotochemistryCatalysisAnalytical ChemistryProchiralityComputational chemistryDrug Discoverycircular dichroism (CD)time-dependent density functional theory (TDDFT)MoleculeColoring AgentsConformational isomerismSpectroscopySettore CHIM/02 - Chimica FisicaPharmacologyChemistryCircular DichroismOrganic ChemistryStereoisomerismCircular dichroism spectradye molecules solvent effectSolventsQuantum TheoryEnantiomerChirality (chemistry)Chirality
researchProduct

Interaction between surface plasmon polaritons and molecules in strong coupling limit

2016

Miniaturization of optical elements and their integration to electronic circuits is limited by diffraction limit. It was realized that light being coupled to surface plasmons (SP) can overcome this limit. Employing also optically active molecules in combination with SPs can drive optical circuits to nm-scale and add functionalities. For efficient performance of plasmonic elements involving fluorescent dye molecules investigation of physics behind their interaction is of high priority. In this thesis interaction between surface plasmon polaritons (SPPs) and different dye molecules has been studied, especially within strong coupling limit, which brings in totally new physical properties in th…

vahva kytkentädye moleculesväriaineetsurface plasmon coupled emissionscatteringPhysics::Opticsmolekyylitoptiset ominaisuudetpintaplasmonitplasmonitsurface plasmon polaritonstrong couplingsirontaohutkalvotmetallit
researchProduct