Complexation of novel multiply N-confused expanded calix[n]phyrins with boron difluoride afforded a new class of cyclic BODIPY (boron-dipyrromethene) arrays. The structures of circularly arranged BODIPY subunits linked in an N-confused fashion give rise to such photophysical properties unique to the macrocycles as redshifted emission wavelengths along with apparent large Stokes shifts, long emission lifetimes, and solid-state lasing. The DFT calculations support the size-dependent excited-state dynamics of the macrocycles.
Bibliographical noteFunding Information:
The present work in Japan was supported by Grant-in-Aids (15K13646 to H.F., 16K05700 to M.I., 16K13714 to S.F.) from the Japan Society for the Promotion of Science (JSPS). The work in Korea was supported by Global Research Laboratory (2013K1A1A2A02050183) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT (Information and Communication Technologies) and Future Planning. The authors acknowledge Dr. M. Watanabe (Kyushu Univ.) for help in the NMR measurement.
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
All Science Journal Classification (ASJC) codes