【摘 要】
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A novel spirobifluorene derivative SPF-TMS,which containing dithioacetal groups and triphenylamine units,was synthesized.The probing behaviors toward variou
【机 构】
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DepartmentofChemistry,ShanghaiNormalUniversity,Shanghai200234
【出 处】
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中国化学会第十三届全国有机合成化学学术研讨会
论文部分内容阅读
A novel spirobifluorene derivative SPF-TMS,which containing dithioacetal groups and triphenylamine units,was synthesized.The probing behaviors toward various metal ions were investigated via UV/Vis absorption spectra as well as one-photon fluorescence changes.The results indicated that SPF-TMS exhibits high sensitivity and selectivity for mercury ions.The detection limit was at least 8.6× 10-8M,which is excellent comparing with other optical sensors for Hg2+.When measured by two-photon excited fluorescence technique in THF at 800 nm,the two-photon cross-section of SPF-TMS is 272 GM.Especially,upon reaction with mercury species,SPF-TMS yielded another two-photon dye SPF-DA.Both SPF-TMS and SPF-DA emit strong two-photon induced fluorescence and can be applied in cell imaging by two-photon microscopy.
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