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Second harmonic scattering from mass characterized 2D graphene oxide sheets
Chemical Communications ( IF 4.9 ) Pub Date : 2020/02/27 , DOI: 10.1039/d0cc00111b
Isabelle Russier-Antoine 1, 2, 3, 4 , Hussein Fakhouri 1, 2, 3, 4 , Srestha Basu 1, 2, 3, 4 , Franck Bertorelle 1, 2, 3, 4 , Philippe Dugourd 1, 2, 3, 4 , Pierre-François Brevet 1, 2, 3, 4 , Prajitha Velayudhan 5, 6, 7 , Sabu Thomas 5, 6, 7 , Nandakumar Kalarikkal 5, 6, 7, 8, 9 , Rodolphe Antoine 1, 2, 3, 4
Affiliation  

In this communication, we report the second harmonic scattering from mass characterized 2D graphene oxide sheets dispersed in an aqueous suspension, in the femtosecond regime at 800 nm laser excitation. Charge-detection mass-spectrometry, performing at the single sheet level, allows for an exhaustive molar mass distribution and thus concentration for these 2D nanomaterials samples. The orientation-averaged hyperpolarizability value is (1.36 ± 0.15) × 10−25 esu as determined by the concentration-dependent harmonic scattering signal. In addition, the multi-photon excited fluorescence spectrum is characterized by a broad band in the visible range between 350 and 700 nm centered at about 500 nm.

中文翻译:

质量表征的二维氧化石墨烯片的二次谐波散射

在此通讯中,我们报告了飞秒状态下在800 nm激光激发下,质量特征化的二维氧化石墨烯片分散在水性悬浮液中的二次谐波散射。在单张水平上执行的电荷检测质谱法可实现详尽的摩尔质量分布,从而实现这些2D纳米材料样品的浓缩。由浓度相关的谐波散射信号确定的取向平均超极化率值为(1.36±0.15)×10 -25 esu。另外,多光子激发的荧光光谱的特征在于在约500nm处在350至700nm之间的可见光范围内的宽带。
更新日期:2020-04-03
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