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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: J Photochem Photobiol A Chem. 2015 Oct 1;311:1–15. doi: 10.1016/j.jphotochem.2015.05.008

Fig. 7.

Fig. 7

Examples of D–π–A (push–pull) dyes similar to AVBs. Different colors represent different π bridges: blue—(poly) vinyl bridges in compounds 16 [54], 17 [72], and 18 [73]; yellow: fused aromatics in 20 [74] and 21 [62]; yellow and blue: both fused aromatic and vinyl in 19 [75]; red: single ring aromatics in 22 [76]. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)