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.
Transient absorption signals of poly(A) (solid line), (A)4 (dashed-dotted line with open diamonds), and ApA (broken line with open circles) at 252 nm with photoexcitation at 267 nm. (a) The signals are normalized at the time delay at which maximal bleach is observed. (b) The signals are normalized at 10 ps after photoexcitation.
