A new spirobifluorene-bridged bipolar system for a nitric oxide turn-on fluorescent probe |
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| Authors: | Lin Li-Yen Lin Xiauo-Yun Lin Francis Wong Ken-Tsung |
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| Affiliation: | Department of Chemistry, National Taiwan University , Taipei 10617, Taiwan. |
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| Abstract: | A new spirobifluorene-bridged bipolar molecule (EDADO) as a nitric oxide (NO) turn-on fluorescent probe was designed and synthesized. The fluorescence of EDADO is strongly quenched by photoinduced electron transfer (PET) from the electron-donating o-phenylenediamine-containing biphenyl branch to the orthogonally arranged electron-accepting 1,3,4-oxadiazole-containing conjugated oligoaryl system. Upon reacting with NO, EDADO is converted to EDADO-T, which exhibits strong fluorescence due to the suppression of PET. |
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