A push-pull unsymmetrical subphthalocyanine dimer

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Zango G, Zirzlmeier J, Claessens CG, Clark T, Victoria Martinez-Diaz M, Guldi DM, Torres T
Zeitschrift: Chemical Science
Verlag: Royal Society of Chemistry
Jahr der Veröffentlichung: 2015
Band: 6
Heftnummer: 10
Seitenbereich: 5571-5577
ISSN: 2041-6520


Abstract


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-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

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


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Einrichtungen weiterer Autorinnen und Autoren

Universidad Autónoma de Madrid (UAM)


Forschungsbereiche

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


Zitierweisen

APA:
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

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

BibTeX: 

Zuletzt aktualisiert 2018-10-08 um 05:10