Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 4, Issue 36, Pages 8496-8505Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tc02945k
Keywords
-
Funding
- National Natural Science Foundation of China [51273045]
- Program for New Century Excellent Talents in University [NCET-12-0122]
Ask authors/readers for more resources
A series of symmetrical cross-conjugated luminophores with different substituents at the 2,3-positions of a quinoxaline unit have been designed and synthesized. Their intramolecular charge transfer (ICT), piezofluorochromic (PFC), and sensing properties have been systematically investigated. It can be found that four luminophores with the same conjugation backbone exhibit different ICT interactions between the electron-withdrawing quinoxaline unit and electron-donating triphenylamine units. Lippert-Mataga analysis reveals that luminophore 1 without substituents displays the largest dipole moment difference between ground and excited states. Moreover, the target luminophores present reversible PFC properties due to the phase transitions between crystalline and amorphous states. The most remarkable piezofluorochromism is achieved for luminophore 4 with pyridyl substituents. A bathochromic shift of 40 nm can be observed upon grinding the pristine sample. Furthermore, the target luminophores demonstrate selective and sensitive sensing properties to Fe3+ ions. In addition, luminophore 4 can also act as a colorimetric and fluorescent chemosensor for Ag+ ions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available