Chinese Journal of Organic Chemistry ›› 2020, Vol. 40 ›› Issue (6): 1658-1664.DOI: 10.6023/cjoc201912016 Previous Articles     Next Articles


杨玉杰a, 徐莉a, 王华b   

  1. a 河南大学化学化工学院 河南开封 475004;
    b 河南大学纳米材料工程研究中心 河南开封 475004
  • 收稿日期:2019-12-11 修回日期:2020-02-29 发布日期:2020-03-06
  • 通讯作者: 徐莉, 王华;
  • 基金资助:

Synthesis of Pyrene-Cyclooctatetrathiophene Derivatives and Their Behaviors of Photoluminescence

Yang Yujiea, Xu Lia, Wang Huab   

  1. a College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004;
    b Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004
  • Received:2019-12-11 Revised:2020-02-29 Published:2020-03-06
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos. 21672053, 21672054).

Cyclooctatetrathiophene (COTh) is a saddle-typed molecule with the interesting property of aggregation induced emission (AIE) discovered recently. In this paper, pyrene was introduced to the framework of COTh as a luminescent group. Three pyrene-COTh derivatives, mono-pyrene substituted COTh (Py-COTh), tetra-pyrene substituted COTh (4Py-COTh) and tetra(tri(trimethylsilyl)cyclooctatetrathiophenyl)pyrene (12TMS-4COTh-Py) were designed and synthesized. Their absorption spectra, fluorescene emission behaviors in solution, rigid state (77 K) and the aggregation state were explored. On the one hand, with increasing pyrene group to the framework of COTh, the molecular conjugation of pyrene-COTh derivatives, Py-COTh and 4Py-COTh changed slightly, but their emission intensity increased heavily with large red shift in both dilute solution and aggregation state. On the other hand, with the increase of COTh group to the framework of pyrene, the molecular conjugation of pyrene-COTh derivatives, Py-COTh and 12TMS-4COTh-Py changed significantly, and their emission intensity increased remarkably with large red shift in dilute solution. The relationship between the photophysical property and molecular structure is remarkably exhibited in our case.

Key words: cyclooctatetrathiophene, pyrene, synthesis of derivative, absorption spectrum, fluorescence spectrum, aggregation induced emission, structure-activity relationship