Photothermal Welding, Melting, and Patterned Expansion of Nonwoven Mats of Polymer Nanofibers for Biomedical and Printing Applications.

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ID: 29256
2019
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Ranked #75 of 192 articles by views in angewandte chemie (international ed in english)

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Abstract
We report a simple method for the photothermal welding of nonwoven mats of electrospun nanofibers by introducing a near-infrared dye such as indocyanine green (ICG) into the nanofibers. By leveraging the strong photothermal effect of the dye, the nanofibers can be readily welded at their cross points or even over-welded (i.e., melted and/or fused together) to transform the porous mat of nanofibers into a solid film upon exposure to a near-infrared laser. While welding at the cross points greatly improves the mechanical strength of a nonwoven mat of nanofibers, melting and fusion of the nanofibers can be employed to fabricate a novel class of photothermal papers for laser writing or printing without involving any chemicals or toner particles. Through the use of a photomask, we can also integrate photothermal welding with the gas foaming technique to pattern and then expand nonwoven mats of nanofibers into three-dimensional scaffolds with well-defined structures. This method can be applied to different combinations of polymers and dyes, as long as they can be co-dissolved in a suitable solvent for electrospinning.
Reference Key
wu2019photothermalangewandte Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wu, Tong;Li, Haoxuan;Xue, Jiajia;Mo, Xiumei;Xia, Younan;
Journal angewandte chemie (international ed in english)
Year 2019
DOI
10.1002/anie.201907876
URL
Keywords Keywords not found

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