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. 2023 Oct 5;21:365. doi: 10.1186/s12951-023-02108-6

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 3 — Photothermal characterization of the IBC-PB composites: (a) absorbance spectra scanning and (b) photothermal effect of the IBC-PB composites in the series of K₄[Fe(CN)₆] concentrations (0, 0.25, 0.5, 0.75, and 1 mmol of K₄[Fe(CN)₆] at an intensity level of 1 W cm⁻² for five minutes. c Validation of the photothermal ability of the IBC-PB composites during five cycles of laser irradiation at an intensity level of 1 W cm⁻² for 200 min. d Absorbance spectra comparison of IBC-PB composites with 0.75 mmol of K₄[Fe(CN)₆] before and after five repeated laser irradiation cycles. (IBC-PB IBC-PB composites)