Fine-tuning the assemblies of carbon nanodots and porphyrins

Tobias Scharl; Alejandro Cadranel; Philipp Haines; Volker Strauss; Sarah Bernhardt; Sonia Vela; Carmen Atienza; Franziska Gröhn; Nazario Martín; Dirk M. Guldi

doi:10.1039/C8CC05069D

Fine-tuning the assemblies of carbon nanodots and porphyrins†

Tobias Scharl,^a Alejandro Cadranel,

^a Philipp Haines,^a Volker Strauss,^a Sarah Bernhardt,^a Sonia Vela,^b Carmen Atienza,

^b Franziska Gröhn,

^a Nazario Martín

*^bc and Dirk M. Guldi

*^a

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* Corresponding authors

^a Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany
E-mail: dirk.guldi@fau.de

^b Department of Organic Chemistry, Faculty of Chemistry, University Complutense of Madrid, Avenida Complutense s/n, Ciudad Universitaria, E-28040 Madrid, Spain

^c IMDEA-Nanociencia, C/Faraday, 9, Campus de Cantoblanco, E-28049 Madrid, Spain

Abstract

We present charge-transfer assemblies of electron accepting, pressure-synthesized carbon nanodots (pCNDs) and an electron donating porphyrin. Amidine derivatization of the porphyrin allows for hydrogen bonding interactions with the carboxyl groups on the surface of pCNDs, which drive the formation of the assembly. Upon photoexcitation, this electron donor–acceptor supramolecular construct features ultrafast charge separation, and subsequent charge recombination in 27 ps.

Chemical Communications

Fine-tuning the assemblies of carbon nanodots and porphyrins†

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