In Vivo Chemoselective Photoacoustic Imaging of Copper(II) in Plant and Animal Subjects

The detection of Cu 2+ in living plants and animals is of great importance for environment monitoring and disease diagnosis. Here, a near‐infrared (NIR) turn‐on photoacoustic (PA) probe (denoted as LET‐2) is developed for Cu 2+ detection in living subjects, such as soybean sprouts and mice. The absorbance band of LET‐2 shifts from 625 to 715 nm after the interaction with Cu 2+ , thus producing strong PA signal output at 715 nm (PA 715 ) as an...