Abstract: Polycyclic compounds that are aromatic or partially aromatic, and are substituted with one or more alkyl groups having an amino group and a carboxylic acid group, and includes carbon quantum dots (CQDs) that contain these compounds. The compounds and CQDs have a selective affinity for cells that express LAT1 and for tumor cells, and can internalize within such cells. The compounds and CQDs are useful for imaging of such cells and for delivering cargo compounds to and into cells that express LAT1 and tumor cells. Methods for making and using these compounds and CQDs for bioimaging and targeting certain tissues, including tumors, are disclosed.

Abstract: Provided herein are triangular carbon quantum dots with narrow bandwidth emission, methods of making them, and methods of using such triangular carbon quantum dots, such as in multicolored LED displays.

Abstract: Provided herein are triangular carbon quantum dots with narrow bandwidth emission, methods of making them, and methods of using such triangular carbon quantum dots, such as in multicolored LED displays.