fluorescence enhancement type chemosensor due to the cavity of calixarene changing from a ‘flattened-cone’ to a more-upright form and inhibition of PET. In contrast, the results suggested that receptor 1 is highly sensitive and selective for Cu2+ and Fe3+ as a fluorescence quenching type chemosensor due to the photoinduced electron transfer (PET) or heavy atom effect.
A Rare and Exclusive Endoperoxide Photoproduct Derived from a Thiacalix[4]arene Crown-Shaped Derivative Bearing a 9,10-Substituted Anthracene Moiety
作者:Jiang-Lin Zhao、Chong Wu、Hirotsugu Tomiyasu、Xi Zeng、Mark R. J. Elsegood、Carl Redshaw、Takehiko Yamato
DOI:10.1002/asia.201600202
日期:2016.5.20
A rare and exclusive endoperoxide photoproduct was quantitatively obtained from a thiacalix[4]arene crown‐shaped derivative upon irradiation at λ=365 nm; the structure was unambiguously confirmed by 1H/13C NMR spectroscopy and X‐ray crystallography. The prerequisites for the formation of the endoperoxide photoproduct have also been discussed. Furthermore, the photochemical reaction rate could be greatly
在λ = 365 nm照射时,从硫杂杯[4]芳烃冠状衍生物中定量获得了稀有且独家的过氧化物过氧化物产物;通过1 H / 13 C NMR光谱学和X射线晶体学明确证实了该结构。还讨论了形成内过氧化物光产物的前提条件。此外,在硫杂杯[4]芳烃平台的存在下,光化学反应速率可以大大提高,因为它可以作为捕获氧气的主体。