Chiral-index resolved length mapping of carbon nanotubes in solution using electric-field induced differential absorption spectroscopy
作者： Wenshan Li , Frank Hennrich , Benjamin S Flavel , Manfred M Kappes , Ralph Krupke
DOI: 10.1088/0957-4484/27/37/375706
关键词: Work (thermodynamics) 、 Measure (mathematics) 、 Length measurement 、 Molecular physics 、 Dispersion (chemistry) 、 Differential optical absorption spectroscopy 、 Dipole 、 Analytical chemistry 、 Electric field 、 Materials science 、 Carbon nanotube
摘要: The length of single-walled carbon nanotubes (SWCNTs) is an important metric for the integration SWCNTs into devices and performance SWCNT-based electronic or optoelectronic applications. In this work we propose a rather simple method based on electric-field induced differential absorption spectroscopy to measure chiral-index-resolved average in dispersions. takes advantage length-dependent dipole moment has been verified calibrated by atomic force microscopy. This not only provides low cost, situ approach measurements dispersion, but due sensitivity SWCNT chiral index, index dependent fractions obtained chromatographic sorting can also be derived. Also, determination chiral-index resolved distribution seems possible using method.
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