Modulation of waveguide behaviour of an ICT 2H-Benzo[d][1,2,3]Triazole derivative with graphene

10 figures.-- Supplementary information.-- © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/Needle-like supramolecular structures prepared by the organized aggregation of a 2H-benzo[d][1,2,3]triazole derivative with few-layer graphene using the slow diffusion technique are described. The as-prepared aggregate shows, by using scanning electron microscopy (SEM), the formation of needles with graphene attached on the surface, which was corroborated by Raman spectroscopy and optical microscopy. The graphene-modified aggregate acts as a selective optical waveguide for green light, in contrast to the pristine aggregate which emits green and red light. These new materials may be of crucial importance for the development of high-performance optoelectronic devices.This work has been financially supported by JCCM-FEDER (project SBPLY/17/180501/000189) and MINECO of Spain (projects CTQ2017-88158-R and CTQ2017-84825-R). I. Torres is indebted to MEC for a FPU studentship and J. M. Gonzalez-Domínguez for his Juan de la Cierva fellowship. We thank Dr. L. Sánchez for their valuable discussions in this research.Peer Reviewe