Issue 13, 2016
From the journal:

Dalton Transactions

Novel aluminum–BODIPY dyads: intriguing dual-emission via photoinduced energy transfer†

Changho Sohn,a   Jisu Jeong,b   Ji Hye Lee,a   Byung Hoon Choi,a   Hyonseok Hwang,a   Gyun-Tack Bae,c   Kang Mun Lee*a  and  Myung Hwan Park*c  

* Corresponding authors

a Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
E-mail: kangmunlee@kangwon.ac.kr

b Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea

c Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
E-mail: mhpark98@chungbuk.ac.kr

Abstract

Three novel BODIPY-based heterodinuclear complexes, [salen(3,5-tBu)2Al-(OC6H4-BODIPY)] (6), [salen(3,5-tBu)2Al-(OC6F2H2-BODIPY)] (7), and [(mq)2Al-(OC6H4-BODIPY)] (8) (salen = N,N′-bis(salicylidene)ethylenediamine, BODIPY = 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene, and mq = methyl-8-quinolinolato) were prepared and characterized by multinuclear NMR spectroscopy. The specific structures of 6–8 were also determined by single crystal X-ray analysis. In particular, the salen-based heterodinuclear complexes 6 and 7 exhibited higher thermal stability (Td5 = 309 and 306 °C, respectively) than that of the closely related mononuclear aluminum or BODIPY compounds, except for 8. The UV/vis absorption and PL spectra for 6 and 7 indicated a significant photoinduced energy transfer from the aluminum–salen moiety to the BODIPY group in an intramolecular manner. Theoretical calculations revealed independent transition states of the aluminum–salen moiety or the BODIPY group in the AlIII–BODIPY dyads, further supporting these experimental results.

Graphical abstract: Novel aluminum–BODIPY dyads: intriguing dual-emission via photoinduced energy transfer

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Article information

DOI
https://doi.org/10.1039/C5DT05067G
Article type
Paper
Submitted
31 Dec 2015
Accepted
19 Feb 2016
First published
03 Mar 2016

Dalton Trans., 2016,45, 5825-5832

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Novel aluminum–BODIPY dyads: intriguing dual-emission via photoinduced energy transfer

C. Sohn, J. Jeong, J. H. Lee, B. H. Choi, H. Hwang, G. Bae, K. M. Lee and M. H. Park, Dalton Trans., 2016, 45, 5825 DOI: 10.1039/C5DT05067G

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