PhD defence by Christoffer Bræstrup

Carbazole-based Helicenes and their Chiroptical Properties

Assessment Committee:
Associate Professor Jørn Bolstad Christensen, CHEM, University of Copenhagen (Chairperson)
Professor Daniel Strand, University of Lund
Professor Daniel Gryko, Polish Academy of Sciences, Warsaw

Supervisor(s):
Professor Michael Pittelkow

Department:
Department of Chemistry

Place:
H.C. Ørsted Instituttet, Room: Aud 4, Universitetsparken 5, 2100 København Ø

Email address to gain access to the thesis: CB@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:
The optical properties of spiral shaped aromatic molecules, known as helicenes, have received increasing interest in recent years, in part due to their potential applications as circularly polarized light sources. Multiple families of these compounds have been examined in depth, with the objective to establish useful "design rules" for tuning the optical properties. In particular, the relationship between molecular structure and circularly polarized luminescence (CPL) properties have been probed. A range of helicenes have been synthesized, and both these, and helicenes synthesized by both internal and external collaborators have been characterized, indicating a clear correlation between CPL output and helicene length.