Donor-acceptor 9-uncapped fluorenes and fluorenones as stable blue light emitters.
The "green emission defect" (GED) produced by fluorenones has significantly retarded the commercial scope of fluorene-based B-OLEDs. In this paper, for the first time, it is demonstrated that the "green light" emitting fluorenones 7 can be converted to "blue light" emitting fluorenones 10 by appropriate positioning of donor-acceptor and chromophoric groups onto the fluorene/fluorenone backbone. Additionally, we report an elegant highly rapid synthetic route for donor-acceptor fluorenes and fluorenones at room temperature with excellent yields.
Goel
Atul
A
Medicinal and Process Chemistry Division, Central Drug Research Institute, Lucknow 226001, India. goela@chemie.uni-wuerzburg.de
Chaurasia
Sumit
S
Dixit
Manish
M
Kumar
Vijay
V
Prakash
Sattey
S
Jena
Bijayalaxmi
B
Verma
Jai K
JK
Jain
Mayank
M
Anand
R S
RS
Manoharan
S Sundar
SS
D005449:Fluorenes / Q000138:chemical synthesis* / Q000737:chemistry; D049449:Luminescence; D015394:Molecular Structure; D010777:Photochemistry
D005449:Fluorenes