Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Top: A sketch of the immobilized spiropyran that undergoes conversions to the merocyanine form and back under UV and Vis irradiation, respectively. Bottom: A derivatized membrane viewed in transmission. The more hydrophobic spiropyran (transparent) and more hydrophilic merocyanine (red) forms are induced by laser irradiation at 532 and 337 nm, respectively.
