AUTHOR=Ma Chang-Shun , Yu Chengyuan , Zhao Cai-Xin , Zhou Shang-Wu , Gu Ruirui 

TITLE=Multicolor emission based on a N, N′—Disubstituted dihydrodibenzo [a, c] phenazine crown ether macrocycle

JOURNAL=Frontiers in Chemistry

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1087610

DOI=10.3389/fchem.2022.1087610

ISSN=2296-2646

ABSTRACT=<p>Dynamic fluorophore 9,14-diphenyl-9,14-dihydrodibenzo[a,c]phenazine (DPAC) affords a new platform to produce diverse emission outputs. In this paper, a novel DPAC-containing crown ether macrocycle <bold>D-6</bold> is synthesized and characterized. Host-guest interactions of <bold>D-6</bold> with different ammonium guests produced a variety of fluorescence with hypsochromic shifts up to 130 nm, which are found to be affected by choice of solvent or guest and host/guest stoichiometry. Formation of supramolecular complexes were confirmed by UV-vis titration, <sup>1</sup>H NMR and HRMS spectroscopy.</p>