TY - JOUR
T1 - Selective dispersion of single-walled carbon nanotubes via easily accessible conjugated click polymers
AU - Gerstel, Peter
AU - Klumpp, Stefanie
AU - Hennrich, Frank
AU - Altintas, Ozcan
AU - Eaton, Thomas R.
AU - Mayor, Marcel
AU - Barner-Kowollik, Christopher
AU - Kappes, Manfred M.
PY - 2012/8/1
Y1 - 2012/8/1
N2 - To date synthetic methods to selectively produce specific (n, m) single-walled carbon nanotubes (SWCNTs) are not available. Therefore, post-processing of SWCNTs including solubilization and sorting by metallicity, length, diameter, chirality or (n, m) is necessary for further applications. To reach the goal of sorting SWCNTs, we have synthesized various conjugated polymers consisting of alternating 9,9-dialkyl fluorene and 1,2,3-triazole units via copper catalyzed alkyne-azide conjugation chemistry. Their ability to selectively wrap specific (n, m) SWCNTs is investigated towards HiPco SWCNT raw materials which contain more than 40 (n, m) species and are found to be comparable to fluorene based triazole free polymers, which are typically prepared via Suzuki-type polymerization. However, the herein reported triazole-linked click polymers are significantly simpler to prepare than their Suzuki-analogs. Fluorescence and UV/Vis NIR spectroscopy were employed to analyze the SWCNTs-polymer suspensions and demonstrate their selectivity for dispersing SWCNTs.
AB - To date synthetic methods to selectively produce specific (n, m) single-walled carbon nanotubes (SWCNTs) are not available. Therefore, post-processing of SWCNTs including solubilization and sorting by metallicity, length, diameter, chirality or (n, m) is necessary for further applications. To reach the goal of sorting SWCNTs, we have synthesized various conjugated polymers consisting of alternating 9,9-dialkyl fluorene and 1,2,3-triazole units via copper catalyzed alkyne-azide conjugation chemistry. Their ability to selectively wrap specific (n, m) SWCNTs is investigated towards HiPco SWCNT raw materials which contain more than 40 (n, m) species and are found to be comparable to fluorene based triazole free polymers, which are typically prepared via Suzuki-type polymerization. However, the herein reported triazole-linked click polymers are significantly simpler to prepare than their Suzuki-analogs. Fluorescence and UV/Vis NIR spectroscopy were employed to analyze the SWCNTs-polymer suspensions and demonstrate their selectivity for dispersing SWCNTs.
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U2 - 10.1039/c2py20161e
DO - 10.1039/c2py20161e
M3 - Article
AN - SCOPUS:84868695307
SN - 1759-9954
VL - 3
SP - 1966
EP - 1970
JO - Polymer Chemistry
JF - Polymer Chemistry
IS - 8
ER -