title: Donor-acceptor 9-uncapped fluorenes and fluorenones as stable blue light emitters.
abstract: 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.
authors.affiliation: Medicinal and Process Chemistry Division, Central Drug Research Institute, Lucknow 226001, India. goela@chemie.uni-wuerzburg.de
authors.forename: Atul
authors.initials: A
authors.lastname: Goel
authors.forename: Sumit
authors.initials: S
authors.lastname: Chaurasia
authors.forename: Manish
authors.initials: M
authors.lastname: Dixit
authors.forename: Vijay
authors.initials: V
authors.lastname: Kumar
authors.forename: Sattey
authors.initials: S
authors.lastname: Prakash
authors.forename: Bijayalaxmi
authors.initials: B
authors.lastname: Jena
authors.forename: Jai K
authors.initials: JK
authors.lastname: Verma
authors.forename: Mayank
authors.initials: M
authors.lastname: Jain
authors.forename: R S
authors.initials: RS
authors.lastname: Anand
authors.forename: S Sundar
authors.initials: SS
authors.lastname: Manoharan
mesh_terms: D005449:Fluorenes / Q000138:chemical synthesis* / Q000737:chemistry; D049449:Luminescence; D015394:Molecular Structure; D010777:Photochemistry
chemical_list: D005449:Fluorenes