2134/32670
Chuan-Zeng Wang
Chuan-Zeng
Wang
Xing Feng
Xing
Feng
Zannatul Kowser
Zannatul
Kowser
Chong Wu
Chong
Wu
Thamina Akther
Thamina
Akther
Mark Elsegood
Mark
Elsegood
Carl Redshaw
Carl
Redshaw
Takehiko Yamato
Takehiko
Yamato
Pyrene-based color-tunable dipolar molecules: Synthesis, characterization and optical properties
Loughborough University
2018
Regioselective synthesis
Pyrene chemistry
K-region
Tunable emission
Dipolar molecules
Chemical Sciences not elsewhere classified
2018-04-23 08:19:45
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Pyrene-based_color-tunable_dipolar_molecules_Synthesis_characterization_and_optical_properties/9394424
© 2018 Elsevier Ltd A controllable regioselective approach to achieve dipolar functionalization at the active sites (1,3-positions) and K-region (5,9-positions) of pyrene is demonstrated. Following this strategy, a set of dipolar 1,3-diphenyl-5,9-di(4-R-phenylethynyl)pyrenes were synthesized and systematically investigated by 1 H/ 13 C NMR spectroscopy, X-ray crystallography, electronic spectra, as well as by theoretical calculations. By adjusting the substituents at the 5,9-positions of pyrene, the pyrene-based dipolar molecules 4 (H, F, OMe, CN, CHO, NMe 2 ) exhibit tunable optical properties with a wide emission band from blue (437 nm) to orange-red (571 nm).