Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2020 May 20;6(21):eaaz8400. doi: 10.1126/sciadv.aaz8400

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

PMC Copyright notice

Fig. 1 — CRET-NPs with a high ROS quantum yield can generate an intense PA signal by thermal expansion–induced vaporization. Because of its ROS-responsive CO₂ production, the strong PA signal of CRET-NPs can be generated at the tumor tissue for a long period of time. In addition, the CRET phenomenon of NPs enhances the ROS quantum yield through both electron transfer in the oxygen-independent type I photochemical reaction and self-illumination in the oxygen-dependent type II photochemical reaction.