Jh. Wang et Yq. Shen, Synthesis and fluorescence properties of new derivatives of 4-dicyanomethylene-2,6-dimethyl-4H-pyran, ADV MAT OPT, 9(4), 1999, pp. 129-134
Two new derivatives of 4-dicyanomethylene-2,6-dimethyl-4H-pyran were synthe
sized and characterised. The fluorescence intensity, quantum yield and emis
sion wavelength of these derivatives are reported. Films made from poly(ami
c acid) with the corresponding chromophore covalently bound show better flu
orescence properties than the acid monomer, Copyright (C) 2000 John Wiley &
Sons, Ltd.