Wu Jian, Yang Jinglei
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, South Taoyuan Road, Taiyuan, Shanxi 030001, China.
Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China.
ACS Omega. 2017 May 24;2(5):2264-2272. doi: 10.1021/acsomega.7b00219. eCollection 2017 May 31.
Controlling the molecular assembling and nanomorphology of organic semiconductors is crucial to obtain high-performance electronic devices. In this work, we have first reported novel superlong salicylideneaniline nanobelts (mHBA) using the magnetic nanoparticle-assisted self-assembly process. Our results show that magnetic nanoparticles will obviously influence the self-assembly behavior, nanomorphology, and crystal structure of molecular HBA. Moreover, the intensity of fluorescence mHBA exhibits decreasing and increasing patterns, with the increase in temperature over a wide temperature range of 8 to 295 K. To elucidate the origin of tautomer forms, the ground and excited states of mHBA were experimentally and theoretically studied. Our results suggest that superlong HBA nanobelts provide a promising intelligent fluorescent thermometer and an organic field-effect transistor.
控制有机半导体的分子组装和纳米形态对于获得高性能电子器件至关重要。在这项工作中，我们首次报道了利用磁性纳米粒子辅助自组装过程制备的新型超长水杨醛苯胺纳米带（mHBA）。我们的结果表明，磁性纳米粒子将显著影响分子HBA的自组装行为、纳米形态和晶体结构。此外，在8至295K的宽温度范围内，随着温度升高，mHBA的荧光强度呈现出先降低后升高的模式。为了阐明互变异构体形式的起源，对mHBA的基态和激发态进行了实验和理论研究。我们的结果表明，超长HBA纳米带为智能荧光温度计和有机场效应晶体管提供了广阔前景。
