Volume 57, Issue 35 pp. 11233-11237
Communication

Synthesis of Triply Fused Porphyrin-Nanographene Conjugates

Qiang Chen

Qiang Chen

Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

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Dr. Luigi Brambilla

Dr. Luigi Brambilla

Dipartimento di Chimica, Materiali ed Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy

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Dr. Lakshya Daukiya

Dr. Lakshya Daukiya

KU Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, 3001 Leuven, Belgium

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Dr. Kunal S. Mali

Dr. Kunal S. Mali

KU Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, 3001 Leuven, Belgium

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Prof. Dr. Steven De Feyter

Prof. Dr. Steven De Feyter

KU Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, 3001 Leuven, Belgium

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Prof. Matteo Tommasini

Prof. Matteo Tommasini

Dipartimento di Chimica, Materiali ed Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy

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Prof. Dr. Klaus Müllen

Corresponding Author

Prof. Dr. Klaus Müllen

Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

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Dr. Akimitsu Narita

Corresponding Author

Dr. Akimitsu Narita

Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

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First published: 08 July 2018
Citations: 71

Graphical Abstract

Triple whammy: Triply fused porphyrin-nanographene conjugates (1 and 2) have been synthesized by the Scholl reaction using tailor-made porphyrin based precursors. The conjugates show broad and intense near-infrared absorption. The self-assembled bilayer of 2 was observed at the trichlorobenzene/highly oriented pyrolytic graphite (HOPG) interface.

Abstract

Two unprecedented porphyrin fused nanographene molecules, 1 and 2, have been synthesized by the Scholl reaction from tailor-made precursors based on benzo[m]tetraphene-substituted porphyrins. The chemical structures were validated by a combination of high-resolution matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (HR MALDI-TOF MS), IR and Raman spectroscopy, and scanning tunnelling microscopy (STM). The UV-vis-near infrared absorption spectroscopy of 1 and 2 demonstrated broad and largely red-shifted absorption spectra extending up to 1000 and 1400 nm, respectively, marking the significant extension of the π-conjugated systems.

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