| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5282163 | Tetrahedron Letters | 2007 | 4 Pages |
Abstract
Tetraiodotrispirobifluorene (1) was synthesized through cyclization of 2,7-diiodofluorene with pentaerythrityl tetrabromide under base condition. Subsequent treatment of 1 with arylboronic acid or arylacetylene under Pd-catalyzed coupling condition led to corresponding tetraaryl trispirobifluorenes (3-8). These trispirobifluorene derivatives exhibited bright-violet to blue photoluminescence (PL) with excellent quantum efficiencies and showed high thermal stabilities. 'Green-emission tail' could not be detected for those tetraaryl substituted trispirobifluorenes (3-8) annealed both in N2 and in air.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Shuqiang Yu, Haiyao Lin, Zujin Zhao, Zixing Wang, Ping Lu,