Fig. 5: Stability and preservation of SP/AAO nanochannels.
From: Switchable biomimetic nanochannels for on-demand SO2 detection by light-controlled photochromism
Construction of microconfined SO2 atmosphere for (a) AP/AAO nanochannels, (d) QL/AAO nanochannels, and (g) SP/AAO nanochannels. I–V curves of (b) AP/AAO nanochannels, (e) QL/AAO nanochannels, and (h) SP/AAO nanochannels before and after 4 days of exposure to the SO2 atmosphere. c, f, and i Corresponding CA change on the nanochannel surface and fluorescence change in the cross-sectional confocal images. AP/AAO aminobenzophenone/anodic aluminium oxide, QL/AAO quinolinium/anodic aluminium oxide, SP/AAO spiropyran/anodic aluminium oxide, CA contact angle, LSCM laser scanning confocal microscopy.
