TY - JOUR
T1 - Synthesis of furanochromones
T2 - A new step in improvement of fluorescence properties
AU - Klymchenko, Andrey S.
AU - Ozturk, Turan
AU - Demchenko, Alexander P.
PY - 2002/9/23
Y1 - 2002/9/23
N2 - New 3-hydroxychromone derivatives with a fused furan heterocycle (2-aryl-3-hydroxyfurano[3,2-g]chromones) have been synthesized. This was achieved by an important improvement in the synthetic procedure. Like their parent analogs, these new compounds exhibit two intensive fluorescence emission bands belonging to normal (N*) and tautomer (T*) excited-state forms. While the spectral position of the N* band remains unchanged, the T* band is shifted to longer wavelengths, providing larger separation between the two bands. The new compounds exhibit increased molecular extinction and, more importantly, have about twice as high fluorescence quantum yields. These properties make them very promising for designing new two-band fluorescence sensors.
AB - New 3-hydroxychromone derivatives with a fused furan heterocycle (2-aryl-3-hydroxyfurano[3,2-g]chromones) have been synthesized. This was achieved by an important improvement in the synthetic procedure. Like their parent analogs, these new compounds exhibit two intensive fluorescence emission bands belonging to normal (N*) and tautomer (T*) excited-state forms. While the spectral position of the N* band remains unchanged, the T* band is shifted to longer wavelengths, providing larger separation between the two bands. The new compounds exhibit increased molecular extinction and, more importantly, have about twice as high fluorescence quantum yields. These properties make them very promising for designing new two-band fluorescence sensors.
UR - http://www.scopus.com/inward/record.url?scp=0037163322&partnerID=8YFLogxK
U2 - 10.1016/S0040-4039(02)01547-2
DO - 10.1016/S0040-4039(02)01547-2
M3 - Article
AN - SCOPUS:0037163322
SN - 0040-4039
VL - 43
SP - 7079
EP - 7082
JO - Tetrahedron Letters
JF - Tetrahedron Letters
IS - 39
ER -