A new series of near infrared（NIR） electrochromic anthraquinone imides containing a triphenylamine moiety as an electron donor was synthesized and their electrochemical and spectroelectrochemical behavior were inves...A new series of near infrared（NIR） electrochromic anthraquinone imides containing a triphenylamine moiety as an electron donor was synthesized and their electrochemical and spectroelectrochemical behavior were investigated.The results show that the new anthraquinone imides are redox active which can be reduced electrochemically from the neutral state to the radical anion form that absorbs in a range of 700―1200 nm.展开更多
A cholesterol-based organogelator bearing an anthraquinone imide （AQI） group was synthesized and characterized. It self-assembled into chiral gels in acetonitrile at low concentrations, which displayed a combination...A cholesterol-based organogelator bearing an anthraquinone imide （AQI） group was synthesized and characterized. It self-assembled into chiral gels in acetonitrile at low concentrations, which displayed a combination of electrochromic and chiroptical properties. Upon electrochemical reduction at -700 mV, the gel exhibited new absorption bands at around 820 nm corresponding to n＊-z＊ （SOMO---~LUMO） transitions of the radical anion of AQI and strong negative Cotton effects in the same spectral region. With further reduction at -1000 mY, a new CD band with a negative Cotton effect in the range from 500 nm to 800 nm appeared concomitant with the variation of absorption spectrum. Thus, with the use of electrochromic AQI chromophore as a switch-responsive unit and the stable gel of compound N-[3fl-cholest- 5-en-3-yl N-（2-aminoethyl） carbamate] anthraquinone-2,3-dicarboxylic imide as a chiral scaffold, a redox-triggered chiroptical switch operating in visible and near-infrared region was realized.展开更多
基金Supported by the Development Program for Outstanding Young Teachers in Harbin Institute of Technology,China(No.HITQNJS.2009.020).
文摘A new series of near infrared（NIR） electrochromic anthraquinone imides containing a triphenylamine moiety as an electron donor was synthesized and their electrochemical and spectroelectrochemical behavior were investigated.The results show that the new anthraquinone imides are redox active which can be reduced electrochemically from the neutral state to the radical anion form that absorbs in a range of 700―1200 nm.
基金financially supported by the National Natural Science Foundation of China(Nos.20674001,20325415, 20834001)the Research Fund for Doctoral Program of Higher Education of MOE of China(No.20060001029)
文摘A cholesterol-based organogelator bearing an anthraquinone imide （AQI） group was synthesized and characterized. It self-assembled into chiral gels in acetonitrile at low concentrations, which displayed a combination of electrochromic and chiroptical properties. Upon electrochemical reduction at -700 mV, the gel exhibited new absorption bands at around 820 nm corresponding to n＊-z＊ （SOMO---~LUMO） transitions of the radical anion of AQI and strong negative Cotton effects in the same spectral region. With further reduction at -1000 mY, a new CD band with a negative Cotton effect in the range from 500 nm to 800 nm appeared concomitant with the variation of absorption spectrum. Thus, with the use of electrochromic AQI chromophore as a switch-responsive unit and the stable gel of compound N-[3fl-cholest- 5-en-3-yl N-（2-aminoethyl） carbamate] anthraquinone-2,3-dicarboxylic imide as a chiral scaffold, a redox-triggered chiroptical switch operating in visible and near-infrared region was realized.
