Miethe Jan F, Schlosser Anja, Eckert J Gerrit, Lübkemann Franziska, Bigall Nadja C
Institute of Physical Chemistry and Electrochemistry , Leibniz Universität Hannover , Callinstr. 3a , D-30167 Hannover , Germany . Email:
J Mater Chem C Mater. 2018 Oct 28;6(40):10916-10923. doi: 10.1039/c8tc03879a. Epub 2018 Oct 3.
One of the most significant objectives in the field of nanotechnology is the transfer of specific properties of smaller nanoparticle building blocks into larger units. In this way, nanoscopic properties can be linked to the macroscopic addressability of larger systems. Such systems might find applications in fields like photoelectrochemical sensing or solar energy harvesting. Our work reports on the novel synthesis of hybrid semiconductor/polymer fibres, which are based on stacks of 4 monolayer (ML) thick CdSe nanoplatelets (NPLs) encapsulated into a polymer shell. The polymer encapsulation not only enables the water transfer of the NPL stacks but also allows the preparation of photoelectrodes by linking the fibres to surface modified indium tin oxide (ITO) glass slides. By applying electrochemical techniques like intensity modulated photocurrent spectroscopy (IMPS), it was possible to prove the motion of charge carriers inside the nanoplatelet stacks and by this the electronic addressibility of them.
纳米技术领域最重要的目标之一是将较小纳米颗粒构建单元的特定性质转移到更大的单元中。通过这种方式，纳米级性质可以与更大系统的宏观可寻址性联系起来。此类系统可能在光电化学传感或太阳能收集等领域找到应用。我们的工作报道了基于包裹在聚合物壳中的4个单层（ML）厚的CdSe纳米片（NPL）堆叠的混合半导体/聚合物纤维的新型合成方法。聚合物封装不仅使NPL堆叠能够进行水转移，还允许通过将纤维连接到表面改性的氧化铟锡（ITO）载玻片上来制备光电极。通过应用强度调制光电流光谱（IMPS）等电化学技术，有可能证明纳米片堆叠内部电荷载流子的运动，并由此证明它们的电子可寻址性。
