Details

Autor(en) / Beteiligte

• Jia, Wen-Li
• Liu, Qin-De
• Song, Datong
• Wang, Suning

Titel

Blue Luminescent Organosilicon Compounds Based on 2,2‘-Dipyridylaminophenyl and 2,2‘-Dipyridylaminobiphenyl

Ist Teil von

• Organometallics, 2003-01, Vol.22 (2), p.321-327

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2003

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Five new luminescent organosilicon compounds, bis[p-(2,2‘-dipyridylamino)phenyl]dimethylsilane (1), bis[p-(2,2‘-dipyridylamino)-4,4‘-biphenyl]dimethylsilane (2), p-(2,2‘-dipyridylamino)phenyldimethylhydroxysilane (3), p-(2,2‘-dipyridylamino)-4,4‘-biphenyldimethylhydroxysilane (4), and 1,1,3,3-tetramethyl-1,3-bis[p-(2,2‘-dipyridylamino)phenyl]disiloxane (5), are synthesized. The structures of compounds 1 and 3−5 are determined by single-crystal X-ray diffraction. All five compounds have fluorescent emissions at 379−383 nm at room temperature. At 77 K, compounds 1−5 have phosphorescent emission bands with λmax ranging from 407 to 518 nm. Increasing the degree of conjugation of the ligand has no significant effect on the fluorescent emission energy of the complexes, but causes a substantial red shift of the phosphorescent emission energy. Both fluorescent and phosphorescent emission of these compounds originates from π* → π transitions centered on the p-(2,2‘-dipyridylamino)phenyl and p-(2,2‘-dipyridylamino)-4,4‘-biphenyl ligands.