Synthesis of zigzag- and fjord-edged nanographene with dual amplified spontaneous emission

We report the synthesis of a dibenzodinaphthocoronene (DBDNC) derivative as a novel nanographene with armchair, zigzag, and fjord edges, which was characterized by NMR and X-ray crystallography as well as infrared (IR) and Raman spectroscopies. Ultrafast transient absorption (TA) spectroscopy reveal...

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Bibliographic Details
Published in:	Chemical science (Cambridge) Vol. 13; no. 44; pp. 134 - 1345
Main Authors:	Xu, Xiushang, Serra, Gianluca, Villa, Andrea, Muñoz-Mármol, Rafael, Vasylevskyi, Serhii, Gadea, Marcos, Lucotti, Andrea, Lin, Zensen, Boj, Pedro G, Kabe, Ryota, Tommasini, Matteo, Díaz-García, María Á, Scotognella, Francesco, Paternò, Giuseppe Maria, Narita, Akimitsu
Format:	Journal Article
Language:	English
Published:	England Royal Society of Chemistry 16-11-2022 The Royal Society of Chemistry
Subjects:	Amplification Chemistry Crystallography Fjords Infrared spectroscopy NMR Nuclear magnetic resonance Optical properties Spontaneous emission Stimulated emission Synthesis
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Summary:	We report the synthesis of a dibenzodinaphthocoronene (DBDNC) derivative as a novel nanographene with armchair, zigzag, and fjord edges, which was characterized by NMR and X-ray crystallography as well as infrared (IR) and Raman spectroscopies. Ultrafast transient absorption (TA) spectroscopy revealed the presence of stimulated emission signals at 655 nm and 710 nm with a relatively long lifetime, which resulted in dual amplified spontaneous emission (ASE) bands under ns-pulsed excitation, indicating the promise of DBNDC as a near-infrared (NIR) fluorophore for photonics. Our results provide new insight into the design of nanographene with intriguing optical properties by incorporating fjord edges. Dibenzo[ a , m ]dinaphtho[ ef , hi ]coronene with zigzag and fjord edges was synthesized and characterized, demonstrating a nonplanar structure with near-infrared stimulated emission with a relatively long lifetime and dual-amplified spontaneous emission.
Bibliography:	Electronic supplementary information (ESI) available. CCDC For ESI and crystallographic data in CIF or other electronic format see DOI https://doi.org/10.1039/d2sc04208h 2167126 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2041-6520 2041-6539
DOI:	10.1039/d2sc04208h