Mechanochromic luminescence of a bionanocomposite hydrogel.

Bionanocomposite hydrogels were prepared from gelatin hydrogel and subsequent ionic crosslinking in the presence of a smectite with adsorbed cyanine dye (pseudoisocyanine). In addition to the improved mechanical properties achieved by the hybridization with the smectite, the composite hydrogel underwent a photoluminescence color change from red to blue upon stretching and recovered from blue to red upon relaxing. The novel luminescence mechanochromism was explained by the aggregation/de-aggregation of the cyanine dye adsorbed on the smectite by stretching/relaxing.

Citation

Ploypailin Milin Saengdet, Makoto Ogawa. Mechanochromic luminescence of a bionanocomposite hydrogel. Chemical communications (Cambridge, England). 2022 Mar 08;58(20):3278-3281

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PMID: 35179173

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