Light induced charging of polymer functionalized nanorods.
Light induced charging of polymer functionalized nanorods.
复制标题
聚合物功能化纳米棒的光诱导充电
DOI：
10.1021/nl100741n
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发表时间：
2010
期刊：
影响因子：
10.8
通讯作者：
R. Zentel
中科院分区：
文献类型：
--
作者：
M. Zorn;S. A. L. Weber;M. N. Tahir;W. Tremel;H.-J. Butt;R. Berger;R. Zentel
ZnO纳米棒功能化与新的嵌段共聚物含有空穴传输部分在一个嵌段和染料和锚系统在第二个嵌段。功能化后，ZnO纳米棒在有机介质中分散良好，染料的荧光被猝灭。开尔文探针力显微镜被用来测量ZnO纳米棒和聚合物电晕之间的电势变化。在光照射时，在单个结构上观察到几十毫伏量级的电位变化。这种效应归因于ZnO纳米棒和其空穴传输聚合物电晕之间的光诱导电荷分离。
ZnO nanorods were functionalized with new block copolymers containing a hole transporting moiety in one block and a dye and an anchor system in the second block. After functionalization, the ZnO nanorods are well dispersible in organic media and the fluorescence of the dye is quenched. Kelvin probe force microscopy was used to measure changes in electrical potential between the ZnO nanorod and the polymeric corona. Upon light irradiation, potential changes on the order of some tens of millivolts were observed on individual structures. This effect is attributed to light-induced charge separation between the ZnO nanorod and its hole transporting polymeric corona.