Xu, Xiushang, Serra, Gianluca, Villa, Andrea, Muñoz-Mármol, Rafael, Vasylevskyi, Serhii, Gadea, Marcos, Lucotti, Andrea, Lin, Zesen, Boj, Pedro G., Kabe, Ryota, Tommasini, Matteo, Díaz-García, María A., Scotognella, Francesco, Paternò, Giuseppe M., Narita, Akimitsu
Synthesis of zigzag- and fjord-edged nanographene with dual amplified spontaneous emission
Chemical Science. 2022, 13: 13040-13045. https://doi.org/10.1039/D2SC04208H
URI: http://hdl.handle.net/10045/128985
DOI: 10.1039/D2SC04208H
ISSN: 2041-6520 (Print)
Abstract: 
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.
Keywords:Synthesis, Zigzag edges, Fjord edges, Nanographene, Dual amplified spontaneous emission
Royal Society of Chemistry
info:eu-repo/semantics/article