Novel 10,13-disubstituted dipyrido[3,2-a:2′,3′-c]phenazines and their platinum(II) complexes: highly luminescent ICT-type fluorophores based on D–A–D structures

Novel donor–acceptor–donor (D–A–D) π-conjugated molecules based on a dipyrido[3,2-a:2′,3′-c]phenazine (dppz) skeleton were synthesized, and their luminescent properties were investigated. Introduction of various aryl substituents to the 10- and 13-positions of dppz allowed us to tune the emission pr...

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Bibliographic Details
Published in:Tetrahedron letters 2014-09, Vol.55 (37), p.5195-5198
Main Authors: Shigehiro, Tatsuya, Yagi, Shigeyuki, Maeda, Takeshi, Nakazumi, Hiroyuki, Fujiwara, Hideki, Sakurai, Yoshiaki
Format: Article
Language:English
Subjects:
Chromophore
Dipyridophenazine
Fluorescence
Intramolecular charge transfer
Platinum complex
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Summary:Novel donor–acceptor–donor (D–A–D) π-conjugated molecules based on a dipyrido[3,2-a:2′,3′-c]phenazine (dppz) skeleton were synthesized, and their luminescent properties were investigated. Introduction of various aryl substituents to the 10- and 13-positions of dppz allowed us to tune the emission properties through modulation of the intramolecular charge transfer (ICT) character on the D–A–D chromophores. Coordination of platinum(II) to the diimine site of dppz also gave rise to facilitation of the ICT to induce a significant red shift of the emission.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2014.07.069