Visible-light fluorescence photomodulation in azo-BF2 switches

TETRAHEDRON

卷:73

Article

Qian, Hai¹  Shao, Baihao¹  Aprahamian, Ivan¹ 

[1] Dartmouth Coll, Dept Chem, Hanover, NH 03755 USA

关键词: Azo-BF2;    Molecular switch;    Switchable fluorescence;    Visible light;   

DOI  :  10.1016/j.tet.2017.05.012

来源: Elsevier

【 摘 要 】

Azo-BF2 switches 1 and 2 with their extended phenanthridinyl pi-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 pi-pi interaction in the system. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

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