Quinoline-Derived Two-Photon Sensitive Quadrupolar Probes

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• 作者：Dr. Christine Tran ; Nawel Berqouch ; Prof. Hamid Dhimane ; Guillaume Clermont ; Dr. Mireille Blanchard-Desce ; Dr. David Ogden and Dr. Peter I. Dalko
• 刊名：Chemistry - A European Journal
• 出版年：2017
• 出版时间：February 3, 2017
• 年：2017
• 卷：23
• 期：8
• 页码：1860-1868
• 全文大小：1439K
• ISSN：1521-3765

文摘

Quadrupolar probes derived from 8-dimethylamino-quinoline (8-DMAQ) having a pegylated fluorene core were prepared and studied under “one-photon” (λ=365 nm) and “two-photon” (TP) (λ=730 nm) irradiation conditions. Compound 1 a was identified as the most efficient probe by UV activation that showed sequential release of acetic acid as a model. Although the probe showed high two-photon absorption it stayed inert under femtosecond irradiation conditions. Fast and selective photolysis was observed, however, by using picosecond irradiation conditions with a remarkably high TP uncaging cross-section (δ_u=2.3 GM).