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| 1 | Reversible photoswitching aggregation and dissolution of spiropyran-functionalized copolymer and light-responsive FRET process显示文摘Well-defined, reversibly light-responsive amphiphilic diblock copolymer grafted with spiropyran, was prepared by reversible addition–fragmentation chain transfer(RAFT) polymerization. The copolymer self-assembles into polymeric micelles in water and exhibits reversible dissolution and re-aggregation characteristics upon ultraviolet(UV) and visible(Vis)-light irradiation. The fluorescence response of spiropyran immobilized onto the copolymer was light switchable. When nitrobenzoxadiazolyl derivative(NBD) dyes are encapsulated into the core of the micelles, a reversible, light-responsive, dual-color fluorescence resonance energy transfer(FRET) system is constructed and processed, which is well regulated by alternatively UV/vis irradiation. We anticipate these photoswitchable and FRET lighting up nanoparticles will be useful in drug delivery and cell imaging or tracking synchronously. | Lei-Xiao Yu Yang Liu Si-Chong Chen Yue Guan Yu-Zhong Wang | 2014 | Chinese Chemical Letters2014，25，3： | 3 |
| 2 | 纳米金/石墨烯/硫辛酰胺修饰的金电极对儿茶酚的催化氧化显示文摘利用电化学还原的方法将还原氧化石墨烯(ERGO)和纳米金(AuNPs)电沉积到硫辛酰胺(T-NH2)修饰的金电极表面,研究了儿茶酚在该修饰电极上的电化学行为.实验表明,在0.10mol/L磷酸缓冲(pH=7.0)溶液中,该修饰电极对儿茶酚具有良好的电催化作用,儿茶酚氧化峰电位比未修饰的金电极负移了80 mV,氧化还原峰电流增大很多,响应电流与儿茶酚浓度在1.40×10-6~9.42×10-3 mol/L范围内呈良好的线性关系,检测的灵敏度为2 682.8μA·(mmol/L)/cm2,检测下限为7.00×10-7 mol/L.此电极具有较好的重现性和稳定性.对样品进行测定及加标回收实验,回收率在97.3%~103.0%之间. | 王娜 李献锐 王贝贝 赵海燕 籍雪平 | 2016 | 西南大学学报(自然科学版)2016，38，7： | 0 |
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