Optical properties of donor-acceptor phenylene-ethynylene systems containing the 6-methylpyran-2-one group as an acceptor.
Donor-acceptor phenylene ethynylene systems containing the 6-methylpyran-2-one group, synthesized via classic or microwave-assisted Sonogashira cross-coupling, exhibit pronounced solvatochromism in fluorescence suggesting a highly polar excited state; 4-[4-(4-N,N-dihexylaminophenylethynyl)phenylethynyl]-6-methylpyran-2-one has a fluorescence quantum yield >0.9 in cyclohexane.
Collings
Jonathan C
JC
Department of Chemistry, University of Durham, Durham DH1 3LE, UK.
Parsons
Alexander C
AC
Porrès
Laurent
L
Beeby
Andrew
A
Batsanov
Andrei S
AS
Howard
Judith A K
JA
Lydon
Donocadh P
DP
Low
Paul J
PJ
Fairlamb
Ian J S
IJ
Marder
Todd B
TB
D000480:Alkynes / Q000737:chemistry*; D004987:Ethers / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009904:Optical Rotation; D010084:Oxidation-Reduction; D011753:Pyrones / Q000138:chemical synthesis* / Q000737:chemistry
D000480:Alkynes; D004987:Ethers; D011753:Pyrones; C436384:phenyleneethynylene