6533b7d1fe1ef96bd125ced5

RESEARCH PRODUCT

Density Functional Theory Study of the Trans-Trans-Cis (TTC)→Trans-Trans-Trans (TTT) Isomerization of a Photochromic Spiropyran Merocyanine

Rosina NotoGrazia CottoneGianfranco La Manna

subject

Models MolecularIndolesVacuumSpiropyran; photochromism; DFT calculation; solvent influence on activation energy; merocyanine.merocyaninesolvent influence on activation energyPharmaceutical ScienceDFT calculationPyrimidinonesPhotochemistryArticleAnalytical Chemistrylcsh:QD241-441Photochromismchemistry.chemical_compoundlcsh:Organic chemistryDrug DiscoveryBenzopyransMerocyaninePhysical and Theoretical ChemistryMethyleneFluorescent DyesIndole testSpiropyranMethylene ChlorideOrganic ChemistryStereoisomerismModels TheoreticalNitro CompoundsphotochromismSolutionschemistrymerocyanine.Chemistry (miscellaneous)ThermodynamicsMolecular MedicineDensity functional theorySpiropyranIsomerizationCis–trans isomerism

description

Density Functional Theory (DFT) calculations have been performed on the TTC→TTT isomerization reaction of the open forms of the 1',3'-dihydro-8-bromo-6-nitro- 1',3',3'-trimethylspiro[2H-1-benzopyran-2,2'-(2H)indole (8-Br-6-nitro-BIPS) system. The calculations were carried out in vacuo and in methylene chloride solution at different temperatures. Results are compared with the available experimental values of free energy difference and activation energy in solution.

yearjournalcountryeditionlanguage
2008-06-01Molecules
10.3390/molecules13061246http://www.mdpi.com/1420-3049/13/6/1246/