| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 177490 | Dyes and Pigments | 2009 | 7 Pages |
Abstract
Triphenylamine core multipolar derivatives were synthesized via the Wittig reaction and Heck reaction and were characterized by MS, NMR, IR; melting points and decomposition temperatures were determined using differential scanning calorimetry. The photophysical as well as the linear and nonlinear spectral properties of multipolar compounds with a triphenylamine core were compared to those of corresponding dipolar compounds. The multipolar chromophores displayed large two-photon absorption and strong optical power limiting properties. An extended π-conjugated system and increased intramolecular cooperative effect are responsible for the observed, large two-photon absorption character.
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Ying Qian, Kang Meng, Chang-Gui Lu, Bao-ping Lin, Wei Huang, Yi-Ping Cui,