Zhang Jie, Qiu Ling, Liu Linshan, Liu Yang, Cui Peng, Wang Fang, Zhang Zhuxia
College of Chemistry, Taiyuan University of Technology, Taiyuan 030024, China.
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.
Nanomaterials (Basel). 2022 Apr 20;12(9):1408. doi: 10.3390/nano12091408.
The photoelectrochemical properties of three metallofullerene-[12]cycloparaphenylene ([12]CPP) supramolecular complexes of ScN@C⊂[12]CPP, ScN@C⊂[12]CPP, and ScC@C⊂[12]CPP were studied. It was revealed that the photocurrent responses of these supramolecular complexes show enhancement compared with those of pristine metallofullerenes, indicating the efficient photocurrent generation and promoted charge carrier transport caused by the supramolecular interaction. The results show that ScC@C and ScC@C⊂[12]CPP have the strongest photocurrents. Then, by comparing the photocurrent intensities of the metallofullerene-biphenyl derivates mixture and the metallofullerene⊂[12]CPP complexes, it was demonstrated that the host-guest interaction is the key factor promoting photocurrent enhancement. At the same time, by observing the microscopic morphologies of pristine fullerenes and supramolecular complexes, it was found that the construction of supramolecules helps to improve the morphology of metallofullerenes on FTO glass. Additionally, their electrical conductivity in optoelectronic devices was tested, respectively, indicating that the construction of supramolecules facilitates the transport of charge carriers. This work discloses the potential application of metallofullerene supramolecular complexes as photodetector and photoelectronic materials.
研究了三种金属富勒烯 - [12]对环芳烷（[12]CPP）超分子配合物ScN@C₂[12]CPP、ScN@C₂[12]CPP和ScC@C₂[12]CPP的光电化学性质。结果表明，与原始金属富勒烯相比，这些超分子配合物的光电流响应增强，表明超分子相互作用导致了有效的光电流产生和促进了电荷载流子的传输。结果表明ScC@C和ScC@C₂[12]CPP具有最强的光电流。然后，通过比较金属富勒烯 - 联苯衍生物混合物和金属富勒烯₂[12]CPP配合物的光电流强度，证明主客体相互作用是促进光电流增强的关键因素。同时，通过观察原始富勒烯和超分子配合物的微观形态，发现超分子的构建有助于改善FTO玻璃上金属富勒烯的形态。此外，分别测试了它们在光电器件中的电导率，表明超分子的构建促进了电荷载流子的传输。这项工作揭示了金属富勒烯超分子配合物作为光探测器和光电子材料的潜在应用。
