TY - JOUR
T1 - Donor-Pi-Acceptor Fluorene Conjugates, Based on Chalcone and Pyrimidine Derivatives
T2 - an Insight into Structure-Property Relationship, Photophysical and Electrochemical Properties
AU - Mahar, Jamaluddin
AU - Shabir, Ghulam
AU - Channar, Pervaiz Ali
AU - Saeed, Aamer
AU - Belfield, Kevin D.
AU - Irfan, Madiha
AU - Ul-Hamid, Anwar
N1 - Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - A small set of four new fluorenyl chromophores (5-5a-c) was accomplished by stepwise nucleophilic substitution, Friedel-Crafts acylation, Ullman coupling, aldol condensation and cyclization reactions. The fluorene moiety was substituted at 2,7,9 and 9′ positions with diverse groups. The synthesized derivatives were characterized by FTIR, 1H-NMR and 13C-NMR spectroscopic techniques. The optical properties were evaluated by by UV-VIS absorption and Fluorescence studies. HOMO and LUMO energy levels were evaluated by electrochemical studies and were found at −5.37-5.83 eV and − 2.47-2.94 eV respectively with band gap energy values 2.88 to 2.91 eV. The band gap energy values suggested that these synthesized molecules can be manipulated in the designing of blue and green OLEDS. [Figure not available: see fulltext.].
AB - A small set of four new fluorenyl chromophores (5-5a-c) was accomplished by stepwise nucleophilic substitution, Friedel-Crafts acylation, Ullman coupling, aldol condensation and cyclization reactions. The fluorene moiety was substituted at 2,7,9 and 9′ positions with diverse groups. The synthesized derivatives were characterized by FTIR, 1H-NMR and 13C-NMR spectroscopic techniques. The optical properties were evaluated by by UV-VIS absorption and Fluorescence studies. HOMO and LUMO energy levels were evaluated by electrochemical studies and were found at −5.37-5.83 eV and − 2.47-2.94 eV respectively with band gap energy values 2.88 to 2.91 eV. The band gap energy values suggested that these synthesized molecules can be manipulated in the designing of blue and green OLEDS. [Figure not available: see fulltext.].
KW - Band gap energy
KW - Fluorene conjugates
KW - HOMO and LUMO
KW - OLEDS
KW - Optoelectronic properties
UR - http://www.scopus.com/inward/record.url?scp=85082881686&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85082881686&partnerID=8YFLogxK
U2 - 10.1007/s10895-020-02516-z
DO - 10.1007/s10895-020-02516-z
M3 - Article
C2 - 32095970
AN - SCOPUS:85082881686
SN - 1053-0509
VL - 30
SP - 419
EP - 426
JO - Journal of Fluorescence
JF - Journal of Fluorescence
IS - 2
ER -