Jump to main content
Jump to site search

Issue 16, 2015
Previous Article Next Article

Strong solid emission and mechanofluorochromism of carbazole-based terephthalate derivatives adjusted by alkyl chains

Author affiliations

Abstract

Three 2,5-dialkylcarbazole-substituted terephthalate derivatives, in which carbazole and ethoxylcarbonyl groups are used as electron-donating and -accepting moieties, respectively, were synthesized. Owing to the presence of steric hindrance between ethoxylcarbonyl and carbazole groups, three compounds show intense blue fluorescence in both solution and the solid state. The fluorescence quantum yields of compounds with octyl and hexadecyl groups in the solid state exceed 95%. Single-crystal structures of three compounds were obtained and used to interpret the strong emission in the solid state. More interestingly, three compounds exhibited alkyl length-dependent mechanofluorochromism. The compound with ethyl groups exhibited the largest spectral shift under force stimuli, but that with a hexadecyl moiety did not change its emission color after grinding. Because of strong fluorescence in solution and the solid state, we believe that they can be used as luminescent materials and sensors.

Graphical abstract: Strong solid emission and mechanofluorochromism of carbazole-based terephthalate derivatives adjusted by alkyl chains

Back to tab navigation

Supplementary files

Publication details

The article was received on 27 Jan 2015, accepted on 12 Mar 2015 and first published on 12 Mar 2015


Article type: Paper
DOI: 10.1039/C5TC00267B
J. Mater. Chem. C, 2015,3, 4086-4092

  •   Request permissions

    Strong solid emission and mechanofluorochromism of carbazole-based terephthalate derivatives adjusted by alkyl chains

    P. Xue, J. Sun, P. Chen, P. Gong, B. Yao, Z. Zhang, C. Qian and R. Lu, J. Mater. Chem. C, 2015, 3, 4086
    DOI: 10.1039/C5TC00267B

Search articles by author

Spotlight

Advertisements