Photothermally induced local dissociation of collagens for harvesting of cell sheets

Jae Dong Kim, June Seok Heo, Teahoon Park, Chihyun Park, Hyun Ok Kim, Eunkyoung Kim

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31 Citations (Scopus)


The local heating of poly(3,4-ethylenedioxythiophene) (PEDOT) by a photothermal effect directed by near-infrared (NIR) light induces unfolding of absorbed collagen triple helices, yielding soluble collagen single-helical structures. This dissociation of collagens allowed the harvesting of a living idiomorphic cell sheet, achieved upon irradiation with NIR light (λ=808 nm). The PEDOT layer was patterned and cells were successfully cultured on the patterned substrate. Cell sheets of various shapes mirroring the PEDOT pattern could be detached after a few minutes of irradiation with NIR light. The PEDOT patterns guided not only the entire shape of the cell sheets but also the spreading direction of the cells in the sheets. This photothermally induced dissociation of collagen provided a fast non-invasive harvesting method and tailor-made cell-sheet patterns.

Original languageEnglish
Pages (from-to)5869-5873
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number20
Publication statusPublished - 2015 May 11

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)


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