10.1021/acs.organomet.5b00016.s002
Tatsuro Annaka
Tatsuro
Annaka
Norio Nakata
Norio
Nakata
Akihiko Ishii
Akihiko
Ishii
Synthesis, Structures, and Temperature-Dependent Photoluminescence
of 1,4-Diphenyl-1-telluro-1,3-butadiene Incorporated in a Dibenzobarrelene
Skeleton and Derivatives
American Chemical Society
2015
dibenzobarrelene skeleton
PL
selenium congeners
Dibenzobarrelene Skeleton
77 K
telluride
room temperature
2015-04-13 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Synthesis_Structures_and_Temperature_Dependent_Photoluminescence_of_1_4_Diphenyl_1_telluro_1_3_butadiene_Incorporated_in_a_Dibenzobarrelene_Skeleton_and_Derivatives/2177917
1,4-Diphenyl-1-telluro-1,3-butadiene
incorporated in a dibenzobarrelene
skeleton was synthesized with a good yield by an intramolecular Diels–Alder
reaction of the corresponding 1-(9-anthyltelluro)enyne. Oxidation
and bromination of the telluride yielded telluroxide and hypervalent <i>Te</i>,<i>Te</i>-dibromide, respectively. Their structures
were determined by X-ray crystallography. Unlike its highly fluorescent
sulfur and selenium congeners, the telluride is barely fluorescent
in solution at room temperature due to the heavy-atom effect of tellurium.
The telluride displayed temperature-dependent fluorescence; it is
fluorescent with a moderate quantum yield (Φ<sub>PL</sub> =
0.42) in the glass of 2-methyltetrahydrofuran at 77 K.