Unexpected length dependence of excited-state charge transfer dynamics for surface-confined perylenediimide ensembles

Amir Mazaheripour; Gregor Kladnik; Jonah-Micah Jocson; Austin G. Wardrip; Cade B. Markegard; Nathan Frey; Albano Cossaro; Luca Floreano; Alberto Verdini; Andrew Bartlett; Anthony M. Burke; Nina Hüsken; Kelsey Miller; Katarina Van Wonterghem; Robert Lopez; Michelle Lu; Amrita Masurkar; Mary N. Dickson; Sahar Sharifzadeh; Hung D. Nguyen; Ioannis Kymissis; Dean Cvetko; Alberto Morgante; Alon A. Gorodetsky

doi:10.1039/C6MH00465B

Unexpected length dependence of excited-state charge transfer dynamics for surface-confined perylenediimide ensembles†

Amir Mazaheripour,^a Gregor Kladnik,^bc Jonah-Micah Jocson,^a Austin G. Wardrip,^d Cade B. Markegard,^a Nathan Frey,^e Albano Cossaro,

^b Luca Floreano,

^b Alberto Verdini,

^b Andrew Bartlett,^a Anthony M. Burke,^a Nina Hüsken,^a Kelsey Miller,^a Katarina Van Wonterghem,^a Robert Lopez,^a Michelle Lu,^a Amrita Masurkar,^f Mary N. Dickson,^a Sahar Sharifzadeh,^e Hung D. Nguyen,^a Ioannis Kymissis,^f Dean Cvetko,^bcg Alberto Morgante*^bh and Alon A. Gorodetsky

*^ad

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* Corresponding authors

^a Department of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, CA 92697, USA
E-mail: alon.gorodetsky@uci.edu

^b CNR-IOM Laboratorio TASC, Trieste 34149, Italy
E-mail: morgante@iom.cnr.edu

^c Faculty for Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia

^d Department of Chemistry, University of California, Irvine, Irvine, California 92697, USA

^e Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA

^f Department of Electrical and Computer Engineering, Columbia University, New York, NY 10027, USA

^g Institut J. Stefan, Ljubljana, Slovenia

^h Department of Physics, University of Trieste, Trieste 34128, Italy

Abstract

The performance of devices from organic semiconductors is often governed by charge transfer phenomena at structurally and electronically complex interfaces, which remain challenging to access and study with excellent chemical and temporal resolution. Herein, we report the preparation and X-ray spectroscopic characterization of well-defined model organic–inorganic interfaces. We discover an unexpected trend for our systems' associated charge transfer times, and we rationalize this trend with density functional theory calculations. Our findings hold relevance for understanding interfacial charge transfer phenomena in a variety of organic, biological, and bioinspired systems.

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Unexpected length dependence of excited-state charge transfer dynamics for surface-confined perylenediimide ensembles†

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Unexpected length dependence of excited-state charge transfer dynamics for surface-confined perylenediimide ensembles

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