| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1231107 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2012 | 7 Pages |
Four new cyano-substituted styryl derivatives based on carbazole and phenothiazine were facilely synthesized by conventional Knoevenagel condensation and well characterized. The UV–vis spectra of these dyes showed the lowest-energy absorption bands were mainly caused by the HOMO–LUMO one-electron promotion as conformed by TD-DFT calculations. The thermogravimetric analysis showed these dyes were thermally stable up to 350 °C. The UV–vis absorption and fluorescence emission spectra were also studied in solvents of different polarity, these dyes exhibited unusual large Stokes shift.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Four cyano-substituted styryl derivatives based on carbazole and phenothiazine were synthesized. ► The TGA results show these derivatives are thermally stable. ► These derivatives exhibited unusual large Stokes shifts.
