Novel Substituted Tetrathia[7]helicenes by Direct Functionalization of the Helical System or Photocyclization of Substituted 1,2-(Bis-benzodithienyl)ethenes
Diastereocontrolled synthesis of optically pure functionalized heterohelicenes
作者:Kazuhiko Tanaka、Hideji Osuga、Hitomi Suzuki
DOI:10.1016/s0957-4166(00)80425-5
日期:1993.8
preparation of functionalized opticallypureheterohelicenes. The diastereoselectivities in the synthesis of the helicenes via photocyclization were controlled by the use of these chiral auxiliaries and the resulting diastereomers were readily separated by column chromatography. Removal of the chiral auxiliaries gave opticallypure (+)-(P)- and (−)-(M)-[7]heterohelicenes, whose rotational values were
[EN] PHOTOLUMINESCENT COMPOUND OR MIXTURE OF PHOTOLUMINESCENT COMPOUNDS<br/>[FR] COMPOSÉ PHOTOLUMINESCENT OU MÉLANGE DE COMPOSÉS PHOTOLUMINESCENTS
申请人:ENI SPA
公开号:WO2013060702A1
公开(公告)日:2013-05-02
A compound comprising a metal belonging to the family of lanthanides and at least one ligand comprising at least one benzodithiophene group or a mixture of compounds comprising a metal belonging to the family of lanthanides and at least one ligand comprising at least one benzodithiophene group. Both said compound and said mixture of compounds can be advantageously used in the construction of spectrum converters capable of enhancing the performances of solar devices (i.e. devices for exploiting solar energy) such as, for example, photovoltaic cells, photoelectrolytic cells.
Novel Substituted Tetrathia[7]helicenes by Direct Functionalization of the Helical System or Photocyclization of Substituted 1,2-(Bis-benzodithienyl)ethenes