Published

  (School of Materials and Chemical Technology /  Dr. Saulius Juodkazis)

“Fluorescence Colour Control in Perylene-Labeled Polymer Chains Trapped by Nanotextured Silicon”

Angew. Chem. （DOI:10.1002/anie.202117227）

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<Abstract>
An optical tweezer technique using nanotextured Si (black-Si) can efficiently trap polymer chains. By increasing the laser intensity, the local concentration of perylene-labelled water-soluble polymer chains increased inside the trapping potential. Accordingly, the excimer fluorescence of perylene increased while the monomer fluorescence decreased. Based on the behaviour, we can control the fluorescence colour; blue, green, yellow-green, yellow, and orange.