Karl Borjesson








Karl Börjesson, PhD

Phone: +46(0)31-772 30 56

E-mail: Karl.Borjesson (at) Chalmers.se

Research Interests: Organic/organometallic materials having interesting physical and/or chemical properties for use as; 1) light harvesting devices. 2) molecular electronics. 3) probes in bio/nano systems.

Brief Bio: I graduated from Chalmers University of Technology in Biotechnology 2006. My diploma work was performed at the organic chemistry division with Jerker Mårtensson as supervisor and it was centred on the syntheses of the fluorescent tricyclic cytosine base analogue tCO. After completing my undergraduate studies, I joined Prof. Bo Albinsson’s research group at the physical chemistry division at Chalmers University of Technology. I continued working with the synthesis and photophysical evaluation of fluorescent DNA base analogous under the supervision of Assistant Prof. Marcus Wilhelmsson. The highlight of this work was the presentation of the base analogues tCO and tCnitro as the world’s first DNA base analogue FRET pair. These bases are now commercial available from Glen Research (http://www.glenresearch.com/GlenReports/GR22-13.html).

I also studied porphyrin modified DNA nanoconstructs where the porphyrins have a multifunctional role and can act as; 1) light collecting units. 2) excited state energy transfer units. 3) ligand binding sites. 4) lipid membrane anchors.

After finishing my PhD, I joined Dr. Kasper Moth-Poulsen’s group in August 2011, working with molecular solar thermal in conjunction with triplet-triplet annihilation up-converting systems.

After receiving a Marie Curie IEF grant in late 2012 I moved to Strasbourg and joined the research group of Prof. Paolo Samori at Institut de Science et d'Ingénierie Supramoléculaires at the University of Strasbourg. There I worked with photoswitchable organic field effect transistors. These were made by blending photochromic molecules together with organic semiconductors. In the blend films traps for charges, and thus the field effect mobility could be modulated by switching the photochromic molecule between two metastable states.

In August 2014 I returned to Sweden and the group of Dr. Kasper Moth-Poulsen, continuing my work on molecular solar thermal, as well as photon up-conversion complexes.

Since october 2015, Karl Börjesson is groupleader at Gothenburg University.

Karls homepage

Current Research Activities: My research project involves the synthesis, physical evaluation and construction of light harvesting and photon up-converting systems. The active light harvesting molecule has two metastable isomers, where the low energy isomer absorbs sunlight upon which it is isomerized to a high energy colourless isomer. The photonic energy is thus accumulated as chemical energy, storable for an extensive period of time in the complex and accessible by back isomerization through heterogeneous catalysis.

Publication List:


25. Börjesson, Herder, Grubert, Duong, Salleo, Hecht, Orgiu and Samorì, “Optically switchable transistors comprising a hybrid photochromic molecule / n-type organic active layer”, Journal of Materials Chemistry C, 2015, (accepted)

24. El Gemayel, Börjesson, Herder, Duong, Hutchison, Ruzié, Schweicher, Salleo, Geerts, Hecht, Orgiu and Samorì, "Optically switchable transistors by simple incorporation of photochromic systems into small-molecule semiconducting matrices", Nature Communications, 2015, 6, DOI: 10.1038/ncomms7330.

23. Orgiu, Squillaci, Rekab, Börjesson, Liscio, Zhang and Samori, "The dramatic effect of the annealing temperature and dielectric functionalization on the electron mobility of indene-C60 bis-adduct thin films", Chemical Communications, 2015, DOI: 10.1039/C1035CC00151J.


22 Börjesson, Ćoso, Gray, Grossman, Guan, Harris, Hertkorn, Hou, Kanai, Lee , Lomont, Majumdar, Meier, Moth-Poulsen, Myrabo, Nguyen, Segalman, Srinivasan, Tolman, Vinokurov, Vollhardt and Weidman, "Exploring the Potential of Fulvalene Dimetals as Platforms for Molecular Solar Thermal Energy Storage: Computations, Syntheses, Structures, Kinetics, and Catalysis", Chemistry – A European Journal, 2014, 20, 15587-15604.

21 Gray, Lennartson, Ratanalert, Börjesson and Moth-Poulsen, "Diaryl-substituted norbornadienes with red-shifted absorption for molecular solar thermal energy storage", Chemical Communications, 2014, 50, 5330-5332.

20 Börjesson, Dzebo, Albinsson and Moth-Poulsen, "Photon up-converting devices for solar fuels", SPIE Newsroom, 2014, DOI: 10.1117/1112.1201404.1005339.

19 Börjesson, Gilbert, Dzebo, Albinsson and Moth-Poulsen, "Conjugated anthracene dendrimers with monomer-like fluorescence", RSC Advances, 2014, 4, 19846-19850.

18 Börjesson, Lennartson and Moth-Poulsen, "Fluorinated fulvalene ruthenium compound for molecular solar thermal applications", Journal of Fluorine Chemistry, 2014, 161, 24-28.


17 Börjesson, Lennartson and Moth-Poulsen, "Efficiency Limit of Molecular Solar Thermal Energy Collecting Devices", ACS Sustainable Chemistry & Engineering, 2013, 1, 585-590.

16 Börjesson, Dzebo, Albinsson and Moth-Poulsen, "Photon upconversion facilitated molecular solar energy storage", Journal of Materials Chemistry A, 2013, 1, 8521-8524.


15 Moth-Poulsen, Coso, Börjesson, Vinokurov, Meier, Majumdar, Vollhardt and Segalman, "Molecular solar thermal (MOST) energy storage and release system", Energy & Environmental Science, 2012, 5, 8534-8537.

14 Börjesson, Woller, Parsa, Mårtensson and Albinsson, "A bioinspired self assembled dimeric porphyrin pocket that binds electron accepting ligands", Chemical Communications, 2012, 1793 - 1795.

13 Albinsson, Hannestad and Börjesson, "Functionalized DNA nanostructures for light harvesting and charge separation", Coordination Chemistry Reviews, 2012, 256, 2399-2413.

12 Woller, Börjesson, Svedhem and Albinsson, "Reversible Hybridization of DNA Anchored to a Lipid Membrane via Porphyrin", Langmuir, 2012, 28, 1944-1953.


11 Börjesson, Lundberg, Woller, Nordén and Albinsson, "Soft-Surface DNA Nanotechnology: DNA Constructs Anchored and Aligned to Lipid Membrane", Angewandte Chemie, International Edition, 2011, 50, 8312-8315.


10 Börjesson, Wiberg, El-Sagheer, Ljungdahl, Mårtensson, Brown, Nordén and Albinsson, "Functionalized Nanostructures: Redox-Active Porphyrin Anchors for Supramolecular DNA Assemblies", ACS Nano, 2010, 4, 5037-5046.

9 Preus, Börjesson, Kilså, Albinsson and Wilhelmsson, "Characterization of Nucleobase Analogue FRET Acceptor tC(nitro)", Journal of Physical Chemistry B, 2010, 114, 1050-1056.


8 Börjesson, Preus, El-Sagheer, Brown, Albinsson and Wilhelmsson, "Nucleic Acid Base Analog FRET-Pair Facilitating Detailed Structural Measurements in Nucleic Acid Containing Systems", Journal of the American Chemical Society, 2009, 131, 4288-4293.

7 Börjesson, Tumpane, Ljungdahl, Wilhelmsson, Nordén, Brown, Mårtensson and Albinsson, "Membrane-Anchored DNA Assembly for Energy and Electron Transfer", Journal of the American Chemical Society, 2009, 131, 2831-2839.

6 Börjesson, Sandin and Wilhelmsson, "Nucleic acid structure and sequence probing using fluorescent base analogue tCO", Biophysical Chemistry, 2009, 139, 24-28.

5 Dyrager, Börjesson, Diner, Elf, Albinsson, Wilhelmsson and Grötli, "Synthesis and Photophysical Characterisation of Fluorescent 8-(1H-1,2,3-Triazol-4-yl)adenosine Derivatives", European Journal of Organic Chemistry, 2009, 1515-1521.

4 Dyrager, Friberg, Dahlen, Friden-Saxin, Börjesson, Wilhelmsson, Smedh, Grötli and Luthman, "2,6,8-Trisubstituted 3-Hydroxychromone Derivatives as Fluorophores for Live-Cell Imaging", Chemistry-a European Journal, 2009, 15, 9417-9423.

3 Sandin, Stengel, Ljungdahl, Börjesson, Macao and Wilhelmsson, "Highly efficient incorporation of the fluorescent nucleotide analogs tC and tCO by Klenow fragment", Nucleic Acids Research, 2009, 37, 3924-3933.

2 Sandin, Tumpane, Börjesson, Wilhelmsson, Brown, Nordén, Albinsson and Lincoln, "Thermodynamic Aspects of DNA Nanoconstruct Stability and Design", Journal of Physical Chemistry C, 2009, 113, 5941-5946.


1 Sandin, Börjesson, Li, Mårtensson, Brown, Wilhelmsson and Albinsson, "Characterization and use of an unprecedentedly bright and structurally non-perturbing fluorescent DNA base analogue", Nucleic Acids Research, 2008, 36, 157-167.