A salen–Al/carbazole dyad-based guest–host assembly: enhancement of luminescence efficiency via intramolecular energy transfer. Issue 37 (23rd April 2018)

• Record Type: Journal Article
• Authors: Kwak, Sang Woo; Jin, Hyomin; Shin, Heuiseok; Lee, Ji Hye; Hwang, Hyonseok; Lee, Junseong; Kim, Min; Chung, Yongseog; Kim, Youngjo; Lee, Kang Mun; Park, Myung Hwan
• Is Part Of: Chemical communications. Volume 54:Issue 37(2018)
• Page Start: 4712
• Page End: 4715
• Publication Date: 2018-04-23
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c8cc01528g
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A novel class of salen–Al/carbazole dyads was synthesized. The dyads exhibited enhanced luminescence efficiency through a significant IET process. Abstract : A novel class of salen–Al/carbazole dyads (D1 and D2) was synthesized and fully identified. The emission spectra of the dyads presented intriguing dual-emission patterns via an intramolecular energy transfer (IET) state in solution. Furthermore, the IET feature of the dyads was clearly observed in the rigid state. Interestingly, the emission efficiency of the dyads was enhanced by the significant IET process from the carbazole group to the salen–Al moiety. Particularly, D1 exhibited a nearly three-fold enhanced luminescence efficiency compared to the corresponding mononuclear aluminum complexes (A1). Such an emission process of these guest–host systems was further supported by theoretical calculation.