Fig. 4: Photopatterning of chiral PDA into various 2D patterns. | Nature Communications

Fig. 4: Photopatterning of chiral PDA into various 2D patterns.

From: Highly enantioselective photo-polymerization enhanced by chiral nanoparticles and in situ photopatterning of chirality

Fig. 4

a Tai-Chi patterns where the red and blue regions filled with left-handed and right-handed PDA when stained with a small chiral alcohol. The filling colors are switched for the two enantiomers of the alcohol. Scale bars, 1 cm. b A microarray of chiral PDA patches in 5 µm × 5 µm squares and 2 µm spacing. Scale bars, 5 µm. c A piece of hidden information coded with chirality that can be deciphered with chiral molecules only. Scale bars, 1 cm.

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