Skip to main content
. Author manuscript; available in PMC: 2017 Dec 7.
Published in final edited form as: Nanophotonics. 2017 Aug 1;6(5):853–879. doi: 10.1515/nanoph-2016-0189

Figure 1. Jablonski diagram.

Figure 1

Ground state photosensitizer (0PS) absorbs light to form first excited singlet state (1PS) that (in addition to losing energy by fluorescence or conversion to heat) undergoes intersystem crossing to form the long lived first excited triplet state (3PS). The triplet state can undergo type I (electron transfer) photochemical reaction to form superoxide and hydroxyl radical, and/or type II (energy transfer) photochemical reaction to form singlet oxygen. These ROS can oxidatively damage and kill all known forms of microorganism.