6533b82efe1ef96bd1293352

RESEARCH PRODUCT

"Though It Be but Little, It Is Fierce": Excited State Engineering of Conjugated Organic Materials by Fluorination.

Begoña Milián-medinaBegoña Milián-medinaJohannes Gierschner

subject

Chemistrychemistry.chemical_element02 engineering and technologyElectronic structureConjugated system010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesChemical physicsExcited stateFluorineOrganic chemistryGeneral Materials ScienceHypsochromic shiftPhysical and Theoretical Chemistry0210 nano-technologyAbsorption (electromagnetic radiation)Doppler broadening

description

Fluorination is frequently used to significantly change the properties of conjugated organic materials due to fluorine’s exceptional properties; well-known is its impact on electronic structure, but it also impacts the geometry despite fluorine’s small size. Less known, the changes in the electronic and geometrical properties may provoke drastic changes of the excited state properties like batho- and hypsochromic shifts of absorption and emission bands (inter alia leading to excited state switching), hypo- and hyperchromic effects, spectral broadening, and changes of the nonradiative deactivation pathways. The state of the art on these issues is summarized in the current Perspective to stimulate further discussions on this intriguing subject.

10.1021/acs.jpclett.6b02495https://pubmed.ncbi.nlm.nih.gov/27958747