Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (10): 20230171.doi: 10.7503/cjcu20230171

• Organic Chemistry • Previous Articles     Next Articles

Effects of Cucurbit[n]uril Hosts on Mechanochromic Properties of Divinylanthracene Derivatives

LI Zhuo, SUN Dongdong, HAN Xie, LIU Simin()   

  1. School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China
  • Received:2023-04-01 Online:2023-10-10 Published:2023-05-09
  • Contact: LIU Simin E-mail:liusimin@wust.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21871216)

Abstract:

Three 9,10-divinylanthracene derivatives(G1—G3) were designed and synthesized in this work. The host-guest complexation of those derivatives with cucurbit[n]urils(CB[n]s, n=8, 10) host and the effects of host-guest interaction on their mechanochromic luminescent(MCL) properties were studied by means of UV-Vis spectroscopy, fluorescence spectroscopy, nuclear magnetic resonance(NMR) and mass spectrometries. The results showed that CB[8] and CB[10] could form 2∶2 and 1∶2 inclusion complexes with guest molecules, respectively, with the enhancement of intermolecular π-π interaction of included molecules. Compared with free guest molecules, the fluorescence emissions of the host-guest complexes exhibited a significant red-shift(>100 nm) and further red-shift after grinding. The results also showed that the effects of different CB[n]s on the MCL properties of guest molecules differ. This study disclosed the effect of CB[n]-based host-guest interaction on the MCL properties of guest molecules, further providing a new way for the construction of novel MCL materials.

Key words: Mechanochromic luminescence, 9, 10-Divinylanthracene derivative, Cucurbit[n]uril, Host-guest interaction, π-π Interaction

CLC Number: 

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