5 years ago

Visible-light fluorescence photomodulation in azo-BF2 switches

Visible-light fluorescence photomodulation in azo-BF2 switches
Azo-BF2 switches 1 and 2 with their extended phenanthridinyl π-system exhibit red-light fluorescence whose intensity can be photomodulated using visible-light. The para-methoxy group in 2 leads to a bathochromic shift in the emission band, pushing its tail further to the near infrared region. This group also changes the isomerization properties in 2, as it does not display the concentration-dependent isomerization rate change observed in 1, most likely because of a change in mechanism from rotation to inversion, and weaker π−π interaction in the system.

Publisher URL: www.sciencedirect.com/science

DOI: S0040402017304787

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