TY - JOUR
T1 - Investigation of photophysical properties of 1,8-naphthalimides with an extended conjugation on naphthalene moiety via Suzuki coupling reaction
AU - Jang, Eunju
AU - Ding, Ting
AU - Xie, Meng
AU - Cao, Haishi
N1 - Funding Information:
Authors greatly appreciate the financial supports by the National Center for Research Resources ( 5P20RR016469 ), the National Institute for General Medical Science ( 8P20GM103427 ), and Nebraska Research Initiative.
Publisher Copyright:
© 2018
PY - 2018/9/1
Y1 - 2018/9/1
N2 - Five 4-substituted 1,8-naphthalimides (1-5), with an extended conjugation on the naphthalene ring, have been synthesized via Suzuki coupling reaction. These derivatives showed a large Stokes shift (up to 200 nm) and longer emission due to the increase of conjugation. Besides strong solvation effect, the low quantum yield were observed in protic solvents compared to in aprotic solvents. The anion forms of 1-5 obtained from reacting with NaH gave a significant red-shift for both absorption and emission spectra. These results provided a new strategy for preparation of fluorescent dyes with a long emission on the basis of 1,8-naphthalimde structure by using Suzuki coupling reaction.
AB - Five 4-substituted 1,8-naphthalimides (1-5), with an extended conjugation on the naphthalene ring, have been synthesized via Suzuki coupling reaction. These derivatives showed a large Stokes shift (up to 200 nm) and longer emission due to the increase of conjugation. Besides strong solvation effect, the low quantum yield were observed in protic solvents compared to in aprotic solvents. The anion forms of 1-5 obtained from reacting with NaH gave a significant red-shift for both absorption and emission spectra. These results provided a new strategy for preparation of fluorescent dyes with a long emission on the basis of 1,8-naphthalimde structure by using Suzuki coupling reaction.
KW - 1,8-Naphthalimide
KW - Photophysical properties
KW - Suzuki coupling reaction
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U2 - 10.1016/j.jphotochem.2018.05.046
DO - 10.1016/j.jphotochem.2018.05.046
M3 - Article
AN - SCOPUS:85048294000
SN - 1010-6030
VL - 364
SP - 145
EP - 150
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
ER -