PhD defence by Dalma Edit Nánási

riangulenium dyes and related helicenes for fluorescence imaging

Assessment Committee:
Professor Mogens Brøndsted Nielsen, Chemistry, University of Copenhagen (Chairperson)
Professor Colin P. Nuckolls, Columbia University
Senior lecturer Alexandre Fuerstenberg, University of Geneva

Supervisor(s):
Professor Bo Wegge Laursen

Department:
Department of Chemistry

Place:
H.C. Ørsted Institute, Room: Auditorium 2, Universitetsparken 5, 2100 København

Email address to gain access to the thesis: den@chem.ku.dk 
You will either receive a copy of the thesis or be informed where you can read a physical copy.

Short description of the thesis:
Fluorescent molecules are powerful tools because they can convert invisible molecular events into light that we can detect. In this thesis, I explore how the structure of organic dyes can be designed to control their fluorescence properties and create molecules for specific sensing and imaging applications. The first part focuses on chiral helicene dyes, where twisting bright fluorescent structures can generate circularly polarized light with potential use in advanced optical materials and microscopy. The second part investigates proton-transfer probes based on DAOTA dyes, which respond to their dynamic chemical environment through changes in fluorescence lifetime. Together, the work shows how molecular design, synthesis, and spectroscopy can be combined to build functional fluorescent probes.