Synthesis and photophysical properties of syn- and anti-[2.n](3,9)carbazolophanes
摘要:
Both syn- and anti-[2.n](3,9)carbazolophanes (n = 4, 5) were obtained by the intramolecular [2 + 2] photocycloaddition of bis(3-vinyl-N-carbazolyl)alkanes. In the case of n = 4, the syn-isomer afforded sandwich excimer fluorescence, whereas the anti-isomer gave monomer fluorescence. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis and photophysical properties of syn- and anti-[2.n](3,9)carbazolophanes
摘要:
Both syn- and anti-[2.n](3,9)carbazolophanes (n = 4, 5) were obtained by the intramolecular [2 + 2] photocycloaddition of bis(3-vinyl-N-carbazolyl)alkanes. In the case of n = 4, the syn-isomer afforded sandwich excimer fluorescence, whereas the anti-isomer gave monomer fluorescence. (C) 1999 Elsevier Science Ltd. All rights reserved.