Bandgap Engineering of Graphene Nanoribbons by Control over Structural Distortion
| Autor: | Juan Li, Lasse Arnt Straasø, Akimitsu Narita, Patrick Simon, Xinliang Feng, Klaus Müllen, Jonathan J. Finley, Michael Ryan Hansen, Yunbin Hu, Johannes V. Barth, Elisa Molinari, Jean-Sébastien Lauret, Loïc Rondin, Peng Xie, Alice Ruini, Deborah Prezzi, Felix Meggendorfer, Shen Zhao, Marzio De Corato, Carlos-Andres Palma |
|---|---|
| Přispěvatelé: | Chongqing Medical University, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Laboratoire de Photonique Quantique et Moléculaire (LPQM), École normale supérieure - Cachan (ENS Cachan)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Nano Optique et Spectroscopy (NOOS), Laboratoire Lumière, Matière et Interfaces (LuMIn), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay), Musée d'Anthropologie Préhistorique, Monaco, Physik Department [Garching], Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Max-Planck-Institut für Polymerforschung (MPI-P), Max-Planck-Gesellschaft |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
optoelectronics
Band gap 02 engineering and technology 010402 general chemistry Catalysis Chemistry (all) Biochemistry Colloid and Surface Chemistry 01 natural sciences nanoelectronics Planar Distortion Side chain [CHIM]Chemical Sciences Absorption (electromagnetic radiation) Alkyl ComputingMilieux_MISCELLANEOUS chemistry.chemical_classification Chemistry [CHIM.ORGA]Chemical Sciences/Organic chemistry General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Nanoelectronics Chemical physics 0210 nano-technology Graphene nanoribbons graphene nanoribbons |
| Zdroj: | Journal of the American Chemical Society Journal of the American Chemical Society, American Chemical Society, 2018, 140 (25), pp.7803-7809. ⟨10.1021/jacs.8b02209⟩ Hu, Y, Xie, P, De Corato, M, Ruini, A, Zhao, S, Meggendorfer, F, Straasø, L A, Rondin, L, Simon, P, Li, J, Finley, J J, Hansen, M R, Lauret, J S, Molinari, E, Feng, X, Barth, J V, Palma, C A, Prezzi, D, Müllen, K & Narita, A 2018, ' Bandgap Engineering of Graphene Nanoribbons by Control over Structural Distortion ', Journal of the American Chemical Society, vol. 140, no. 25, pp. 7803-7809 . https://doi.org/10.1021/jacs.8b02209 Journal of the American Chemical Society (Online) 140 (2018): 7803–7809. doi:10.1021/jacs.8b02209 info:cnr-pdr/source/autori:Hu Y.; Xie P.; De Corato M.; Ruini A.; Zhao S.; Meggendorfer F.; Straaso L.A.; Rondin L.; Simon P.; Li J.; Finley J.J.; Hansen M.R.; Lauret J.-S.; Molinari E.; Feng X.; Barth J.V.; Palma C.-A.; Prezzi D.; Mullen K.; Narita A./titolo:Bandgap Engineering of Graphene Nanoribbons by Control over Structural Distortion/doi:10.1021%2Fjacs.8b02209/rivista:Journal of the American Chemical Society (Online)/anno:2018/pagina_da:7803/pagina_a:7809/intervallo_pagine:7803–7809/volume:140 |
| ISSN: | 0002-7863 1520-5126 |
| DOI: | 10.1021/jacs.8b02209⟩ |
| Popis: | Among organic electronic materials, graphene nanoribbons (GNRs) offer extraordinary versatility as next-generation semiconducting materials for nanoelectronics and optoelectronics due to their tunable properties, including charge-carrier mobility, optical absorption, and electronic bandgap, which are uniquely defined by their chemical structures. Although planar GNRs have been predominantly considered until now, nonplanarity can be an additional parameter to modulate their properties without changing the aromatic core. Herein, we report theoretical and experimental studies on two GNR structures with "cove"-type edges, having an identical aromatic core but with alkyl side chains at different peripheral positions. The theoretical results indicate that installment of alkyl chains at the innermost positions of the "cove"-type edges can "bend" the peripheral rings of the GNR through steric repulsion between aromatic protons and the introduced alkyl chains. This structural distortion is theoretically predicted to reduce the bandgap by up to 0.27 eV, which is corroborated by experimental comparison of thus synthesized planar and nonplanar GNRs through UV-vis-near-infrared absorption and photoluminescence excitation spectroscopy. Our results extend the possibility of engineering GNR properties, adding subtle structural distortion as a distinct and potentially highly versatile parameter. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|