- Preparation of a hyperbranched porous polymer and its sensing performance for nitroaromatics
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A hyperbranched porous polymer P based on adamantane and pyrene was synthesized through the Sonogashira coupling reaction. The three-dimensional rigid molecular skeleton of adamantane makes polymer P porous. Compound M, which acts as the block moiety between two adamantane groups in polymer P, was also synthesized for the control experiment. Compared with M, the characteristics of P changed remarkably with it exhibiting different emission behaviors and performances for the detection of DNT. In saturated DNT vapor, the quenching efficiency (ηEP) of film P (82%) was remarkably superior compared with that of film M (22%). In addition, a series of films with different thicknesses and different amounts of polymer P were prepared. Results showed that the quenching efficiencies did not change with an increase in the film thickness.
- Wu, Hongtao,Xu, He,Tao, Furong,Su, Xi,Yu, William W.,Li, Tianduo,Cui, Yuezhi
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p. 12802 - 12810
(2018/08/04)
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- SYNTHESIS OF PYRENE DERIVATIVES
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The direct iodination of pyrene with the I2-HIO3-H2SO4 system gives a mixture of 1,6- and 1,8-diiodopyrenes with a preponderance of 1,6-diiodopyrene.Increase in the reaction temperature to 100 deg C leads to an increase in the yield of the second isomer.I
- Chaikovskii, V. K.,Novikov, A. N.
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p. 1350 - 1352
(2007/10/02)
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