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N-Doped graphene/C60 covalent hybrid as a new material for energy harvesting applications†
Chemical Science ( IF 7.6 ) Pub Date : 2018-08-27 00:00:00 , DOI: 10.1039/c8sc02013b Myriam Barrejón 1, 2 , Luis M Arellano 1 , Habtom B Gobeze 3 , María J Gómez-Escalonilla 1 , Jose Luis G Fierro 4 , Francis D'Souza 3 , Fernando Langa 1
Chemical Science ( IF 7.6 ) Pub Date : 2018-08-27 00:00:00 , DOI: 10.1039/c8sc02013b Myriam Barrejón 1, 2 , Luis M Arellano 1 , Habtom B Gobeze 3 , María J Gómez-Escalonilla 1 , Jose Luis G Fierro 4 , Francis D'Souza 3 , Fernando Langa 1
Affiliation
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N-Doped graphene (N-G) was chemically functionalized by N-alkylation with the well-known electron acceptor C60. The degree of functionalization and the key structural features of the N-G/C60 hybrid were systematically investigated by a number of techniques including thermogravimetric analysis, X-ray photoelectron and Raman spectroscopies and transmission electron and atomic force microscopies. Absorption and electrochemical studies revealed interactions between the N-G and C60 while the fluorescence of C60 within the hybrid was found to be fully quenched. Evidence for the occurrence of excited state charge transfer from the singlet excited C60 to N-G in the hybrid was obtained from femtosecond transient absorption studies covering the visible–near-IR regions. Electron-pooling experiments performed in the presence of a sacrificial electron donor and a second electron acceptor, methyl viologen, revealed the accumulation of the one-electron reduced product of methyl viologen upon continuous irradiation of the N-G/C60 nanohybrid, thus revealing the utility of this material in photocatalytic energy harvesting applications.
中文翻译：
N-掺杂石墨烯/C60 共价杂化物作为能量收集应用的新材料†
N-掺杂石墨烯（NG）通过N-烷基化与众所周知的电子受体C 60进行化学官能化。通过热重分析、X射线光电子和拉曼光谱以及透射电子和原子力显微镜等多种技术系统地研究了NG/C 60杂化物的功能化程度和关键结构特征。吸收和电化学研究揭示了 NG 和 C 60之间的相互作用，同时发现杂化物中 C 60的荧光被完全猝灭。从涵盖可见光-近红外区域的飞秒瞬态吸收研究中获得了杂化物中从单线态激发的 C 60到 NG 发生激发态电荷转移的证据。在牺牲电子供体和第二电子受体甲基紫精存在下进行的电子池实验揭示了在连续照射 NG/C 60纳米杂化物时甲基紫精的单电子还原产物的积累，从而揭示了其效用这种材料在光催化能量收集应用中的应用。
更新日期：2018-08-27
中文翻译：
N-掺杂石墨烯/C60 共价杂化物作为能量收集应用的新材料†
N-掺杂石墨烯（NG）通过N-烷基化与众所周知的电子受体C 60进行化学官能化。通过热重分析、X射线光电子和拉曼光谱以及透射电子和原子力显微镜等多种技术系统地研究了NG/C 60杂化物的功能化程度和关键结构特征。吸收和电化学研究揭示了 NG 和 C 60之间的相互作用，同时发现杂化物中 C 60的荧光被完全猝灭。从涵盖可见光-近红外区域的飞秒瞬态吸收研究中获得了杂化物中从单线态激发的 C 60到 NG 发生激发态电荷转移的证据。在牺牲电子供体和第二电子受体甲基紫精存在下进行的电子池实验揭示了在连续照射 NG/C 60纳米杂化物时甲基紫精的单电子还原产物的积累，从而揭示了其效用这种材料在光催化能量收集应用中的应用。
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