Beyond absorption maxima: the impact of wavelength-resolved photochemistry on materials science

Abstract

Reflecting on Giacomo Ciamician's revolutionary vision of harnessing sunlight to drive photochemical transformations, the field of materials science has evolved significantly, yet it has been constrained by the misconception that the highest reactivity in photochemical systems is achieved at the absorption maxima. Here, we explore this notion further with evidence from photochemical action plots, demonstrating that reactivity can indeed be maximal at wavelengths significantly separated from the absorption peak. By examining the implications of the disparity between absorptivity and photochemical reactivitiy, we explore its impact for the enhanced penetration depth of light in photoresists, the reduction of energy requirements for photochemical reactions, and its transformative potential for volumetric 3D printing. Ultimately, we argue for a renewed appreciation of light's capability to facilitate photochemical reactions across the entire volume of a material.

Graphical abstract: Beyond absorption maxima: the impact of wavelength-resolved photochemistry on materials science

Supplementary files

Article information

Article type
Opinion
Submitted
26 Jul 2024
Accepted
10 Sep 2024
First published
12 Sep 2024

Mater. Horiz., 2024, Advance Article

Beyond absorption maxima: the impact of wavelength-resolved photochemistry on materials science

Q. Thijssen, J. A. Carroll, F. Feist, A. Beil, H. Grützmacher, M. Wegener, S. Van Vlierberghe and C. Barner-Kowollik, Mater. Horiz., 2024, Advance Article , DOI: 10.1039/D4MH00976B

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