A push-pull unsymmetrical subphthalocyanine dimer

Journal article

Publication Details

Author(s): Zango G, Zirzlmeier J, Claessens CG, Clark T, Victoria Martinez-Diaz M, Guldi DM, Torres T
Journal: Chemical Science
Publisher: Royal Society of Chemistry
Publication year: 2015
Volume: 6
Journal issue: 10
Pages range: 5571-5577
ISSN: 2041-6520


Unsymmetrical subphthalocyanine fused dimers have been prepared from appropriate ortho-dinitrile SubPc precursors. In particular, either electron-donating or electron-accepting substituents have been introduced on each SubPc constituent unit, resulting in unprecedented push-pull pi-extended curved aromatic macrocycles. From fluorescence experiments in solvents of different polarity we conclude a dual fluorescence, namely a delocalized singlet excited state (1.73 eV) and a polarized charge transfer state (<1.7 eV). Pump probe experiments corroborate the dual nature of the fluorescence. On one hand, the delocalized singlet excited state gives rise to a several nanosecond lasting intersystem crossing yielding the corresponding triplet excited state. On the other hand, the polarized charge transfer state deactivates within a few picosesonds. Visualization of the charge transfer state was accomplished by means of molecular modeling with a slight polarization of the HOMO towards the electron donor and of the LUMO towards the electron acceptor.

FAU Authors / FAU Editors

Clark, Timothy apl. Prof. Dr.
Guldi, Dirk Michael Prof. Dr.
Lehrstuhl für Physikalische Chemie I
Zirzlmeier, Johannes
Lehrstuhl für Physikalische Chemie I

Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials

External institutions with authors

Universidad Autónoma de Madrid (UAM)

Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials
A3 Multiscale Modeling and Simulation
Exzellenz-Cluster Engineering of Advanced Materials

How to cite

Zango, G., Zirzlmeier, J., Claessens, C.G., Clark, T., Victoria Martinez-Diaz, M., Guldi, D.M., & Torres, T. (2015). A push-pull unsymmetrical subphthalocyanine dimer. Chemical Science, 6(10), 5571-5577. https://dx.doi.org/10.1039/c5sc01709b

Zango, German, et al. "A push-pull unsymmetrical subphthalocyanine dimer." Chemical Science 6.10 (2015): 5571-5577.


Last updated on 2018-10-08 at 05:10