Fig. 1
Preparation and characterization of Rp@Al with photothermal performance. a Schematic diagram of the preparation of Rp@Al composed of Rhodopseudomonas palustris (Rp) and aluminum (Al) adjuvant. b Stability of Rp@Al gel on Day 7. c, d Representative optical microscope (c) and scanning electron microscope (d) images of Rp. e Absorption spectrum of live Rp. f Photothermal temperature curves of phosphate-buffered saline (PBS), Rp, and Rp@Al under an 808-nm laser with a power density of 2 W/cm2 for 8 min. g Photothermal temperature curves of PBS and different concentrations of Rp@Al under an 808-nm laser with a power density of 2 W/cm2 for 8 min. h Photothermal temperature curves of Rp@Al under an 808-nm laser with different power densities for 8 min. i Photothermal stability of Rp@Al under an 808-nm laser with a power density of 2 W/cm2 for four irradiation/cooling cycles. j Photothermal conversion efficiency of Rp@Al