Correction: Photoregulative phase change biomaterials showing thermodynamic and mechanical stabilities.

Correction for 'Photoregulative phase change biomaterials showing thermodynamic and mechanical stabilities' by Lei Zhang , , 2022, , 976-983, https://doi.org/10.1039/D1NR06000G.

Photoregulative phase change biomaterials showing thermodynamic and mchanical stabilities.

Azobenzenes are great photochromic molecules for switching the physical properties of various materials - isomerization. However, the UV light resulted -azobenzene is metastable and thermodynamically gets back to -azobenzene after ceasing UV irradiation, which causes an unwanted property change of azobenzene-containing materials. Additionally, thermal and mechanical conditions would accelerate this process dramatically.

Tailoring effects of the chain length and terminal substituent on the photochromism of solid-state spiropyrans.

Recently, by constructing a haloalkyl chain, a new class of solid-state spiropyrans showing advanced photochromic activity has been developed, but the tailoring effect of the haloalkyl chain on photochromism is unclear. Here, the photochromism of solid-state spiropyrans with different chain lengths and end substituents is investigated, which gives a clear correlation between the chain length/end substituent and the thermodynamic stability of zwitterionic merocyanine. This work provides a useful designing strategy for tailoring the photochromism of solid-state spiropyrans.