Open AccessOctylamine‐Modified Fluorographenes as a Versatile Platform for the Efficient Engineering of the Nonlinear Optical Properties of Fluorinated Graphenes
Author(s) -
Stathis Aristeidis,
Stavrou Michalis,
Papadakis Ioannis,
Bakandritsos Aristides,
Steklý Tomáš,
Otyepka Michal,
Couris Stelios
Publication year - 2020
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202000014
Subject(s) - graphene , nonlinear optical , covalent bond , ionic bonding , materials science , surface modification , nucleophile , reactivity (psychology) , combinatorial chemistry , chemical engineering , chemistry , nanotechnology , organic chemistry , nonlinear system , ion , catalysis , medicine , physics , alternative medicine , pathology , quantum mechanics , engineering
Fluorographene (FG) is an uprising member of the graphene family as it combines high reactivity and stability. It presents various types of CF bonds (covalent, semi‐ionic, and ionic bonds) depending on its F‐atom content, which can be efficiently controlled by means of chemical synthesis. It is found that the chemical tweaking of the FG's structure may lead to derivatives such as amino‐ and thiol‐modified FGs, affecting significantly their nonlinear optical (NLO) response. Herein, the identification of N‐octylamine (OA) as the most efficient nucleophile is reported on, which ascribes to the obtained FG–OA derivatives exceptionally high N content (up to 18%) along with a record NLO response under 35 ps laser pulses, both in the visible and the infrared. As the reaction time between FG and OA proceeds, the F content declines at the expense of the growing aromatic regions and nitrogen centers, resulting in FG–OA materials with progressively improved NLO response. Therefore, OA functionalization of FG is particularly effective for switching “ON” an unprecedented NLO response on this organophilic graphene derivative. Herein, the potential of fluorinated graphene as a versatile scaffold is also demonstrated, allowing the preparation of materials with custom‐made NLO response.