A Conceptual Study on Photodynamic Control‐Mediated Holographic Composites
photosensitizers
QC350-467
02 engineering and technology
Optics. Light
01 natural sciences
TA1501-1820
0104 chemical sciences
photodynamic films
singlet oxygen receptors
photodynamic effects
holographic recordings
Applied optics. Photonics
0210 nano-technology
DOI:
10.1002/adpr.202270023
Publication Date:
2022-08-04T02:59:13Z
AUTHORS (13)
ABSTRACT
Herein, photodynamic control‐mediated holographic composites are proposed, which are composed of photosensitizers, singlet oxygen receptors, and a polymeric matrix. Rose bengal (RB) and methylene blue (MB) are used as photosensitizers, and 1,3‐diphenylisobenzofuran (DPBF) as a singlet oxygen receptor. First, the photodynamic effects of the photosensitizers in DPBF‐dissolved solutions are evaluated by analyzing the optical properties of DPBF under laser irradiation. The results confirm that RB and MB are selectively photoexcited by a green and red laser, respectively, and DPBF only reacts to the photosensitized singlet oxygen. Similarly, an outstanding photodynamic effect is observed in the DPBF‐coated photodynamic films upon 660 nm laser irradiation. To evaluate the holographic performances of the films, the diffraction efficiency of the films is measured under the beams. The diffraction efficiency of the films is 2.03%. The results suggest that the conformational changes of the receptor are accompanied with absorptive gradients on the films. Therefore, it is strongly believed that the new strategy with photodynamic control can provide appealing solutions in the near future for holographic applications.
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