Synthesis of Zigzag- and Fjord-edged Nanographene with Dual Amplified Spontaneous Emission

Overview

Journal Chem Sci

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 Nov 25

PMID 36425485

Authors

Xiushang Xu

Gianluca Serra

Andrea Villa

Rafael Munoz-Marmol

Serhii Vasylevskyi

Marcos Gadea

Andrea Lucotti

Zensen Lin

Pedro G Boj

Ryota Kabe

Matteo Tommasini

Maria A Diaz-Garcia

Francesco Scotognella

Giuseppe Maria Paterno

Akimitsu Narita

Affiliations

Soon will be listed here.

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.

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