Stockholm university logo, link to start page

Research project Charged Microdroplets for Artificial Photosynthesis

The goal of the CHAMPS project is to develop a new paradigm for nanotechnological research and development based on charged microdroplets produced by electrospray ionization (ESI)

The guiding principle is to learn from nature. As a
starting point, the project takes inspiration from natures light-emitting diodes (LEDs): bioluminescent bacteria. The key
photochemically active unit, called the chromophore, responsible for light emitted from these bacteria is a biomolecule
from the flavin family. Using the powerful tools of gas-phase action spectroscopy, the intrinsic luminescence properties
of flavins will be investigated. In addition, new spectroscopic and analytical methods will be developed for probing the
electronic and chemical properties of flavins inside and at the surface of charged microdroplets. These experiments will
establish a quantitative picture of how flavin luminescence is modulated by the nano-scale interactions in the microdroplet
and by extension to the similar interactions with the protein nano-environment inside the bacteria. This new knowledge
will be applied towards the development of an artificial photosystem exploiting the unique characteristics of charged

Project members

Project managers


Jordan Dezalay


Boxing Zhu


Department of Physics
Boxing Zhu