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Persulfurated Benzene‐Cored Asterisks with π‐Extended ThioNaphthyl Arms: Synthesis, Structural, Photophysical and Covalent Dynamic Properties.
- Source :
- Chemistry - A European Journal; 8/16/2022, Vol. 28 Issue 46, p1-8, 8p
- Publication Year :
- 2022
-
Abstract
- The synthesis of regioisomeric asterisks (5) and (6) incorporating a benzene core with six 1‐naphthylthio or six 2‐naphthylthio arms are reported in search for new materials with optoelectronic properties. The consequences on the extension of a π system surrounding a persulfurated benzene core provide a new avenue to study the structural, photophysical, and chemical properties of such family of all‐organic phosphors. It also diverts the persulfuration mechanism after two radical cyclizations for making a [5]dithiohelicene by‐product (7) and favors dynamic sulfur component exchange reactions surrounding the core. These exchanges convert asterisks (5) and (6), non‐phosphorescent at 20 °C to the highly phosphorescent (4) (ϕ ∼100 %, solid state at 20 °C). For asterisks (5) and (6), the absence of the typical phosphorescence of the per(phenylthio)benzene core in the solid state at 20 °C and the presence of a weak naphthalene‐based phosphorescence at 77 K is attributed to an energy transfer from the triplet state of the persulfurated benzene core to the outer naphthalene moieties, resulting in an antenna system. [ABSTRACT FROM AUTHOR]
- Subjects :
- EXCHANGE reactions
CHEMICAL properties
PHOSPHORESCENCE
ENERGY transfer
BENZENE
Subjects
Details
- Language :
- English
- ISSN :
- 09476539
- Volume :
- 28
- Issue :
- 46
- Database :
- Complementary Index
- Journal :
- Chemistry - A European Journal
- Publication Type :
- Academic Journal
- Accession number :
- 158572980
- Full Text :
- https://doi.org/10.1002/chem.202200797