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.
(A) UV-Vis absorption (B) and emission spectra of porphyrins 12 and 13. These indicate the redshift in wavelength of absorption and quenching of the fluorescence upon bromination of the porphyrin. Reproduced with permission from porphyrin. Reproduced with permission from (Babu et al., 2020a).
