中文摘要：

二噻吩基乙烯类荧光分子开关作为最为经典的二芳基乙烯结构之一，因具有优良的抗疲劳性和双稳态特征而被广泛地研究与应用。本文综述了二噻吩基乙烯荧光分子开关及其聚合物的发展历程，归纳了其荧光开关的机理，介绍了二噻吩基乙烯荧光分子开关及其聚合物近几年在结构与性能的研究基础上取得的重要进展，并重点对它们在可擦写光信息存储、无损读出、单分子荧光成像、生物光学成像、全光晶体管以及超分辨成像等领域的应用进行了系统地概述。文章最后总结了当前二噻吩基乙烯研究中遇到的一些问题，提出了二噻吩基乙烯荧光开关及其聚合物的未来研究方向，同时也对二噻吩基乙烯应用于超分辨成像的前景作出了展望。

英文摘要：

Photoswitehable fluorescent dithienylethene is one kind of the most typical diarylethene structures. Owing to its excellent fatigue resistance and unique thermal bistability, it has been widely studied and applied. This paper reviews the development history of photoswitchable fluorescent thienylethenes, summarized the mechanism of fluorescence photoswitching mechanisms, describes some important achievements on the foundational research about novel structures and improved properties of photoswitchable fluorescent thienylethene in recent years. We also focus on the systemic overview of the applications of photoswitchable fluorescent dithienylethylene in optical memory, non-destructive read-out, single-molecule fluorescence imaging, bio-imaging, all-optical transistors. In the end, the challenges encountered during the study of diarylethenes are analyzed. It is believable that photoswithcable fluorescent polymers based on dithienylethene is the research direction in the future. Moreover, the promising application of diarylethenes in super-resolution imaging is prospected.