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Sensors 2010, 10(1), 613-624; doi:10.3390/s100100613
Article

Formation of Zwitterionic Fullerodendron Using a New DBN-Focal Dendron

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Received: 16 November 2009; in revised form: 30 December 2009 / Accepted: 6 January 2009 / Published: 14 January 2010
(This article belongs to the Special Issue Dendritic Sensors: From Dendrimer Molecules to Dendritic Cells)
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Abstract: A new poly(amidoamine) dendron having 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) at the focal point was synthesized. Interestingly, formation of zwitterionic fullerodendrons (λmax = 930 nm for C60 and 795 nm for C70) were observed by Vis-NIR spectroscopy upon the reaction of C60 or C70 with the DBN-focal dendron. In particular, the C70 anion was effectively stabilized by the site isolation effect of the dendritic wedge. The half-life of fullerodendron 12b having C70 anion at the focal point reaches 7,345 min, which is 20 times longer than that of complex between C60 and pristine DBN. Furthermore, in order to confirm the structure of the zwitterionic complex, fullerodendron 12a was reprecipitated from benzonitrile/1,2,4-trimethylbenzene, and was observed using IR spectroscopy and APPI-MS.
Keywords: dendrimer; fullerodendron; fullerene; DBN; fullerene anion dendrimer; fullerodendron; fullerene; DBN; fullerene anion
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Takaguchi, Y.; Hosokawa, M.; Mayahara, M.; Tajima, T.; Sasamori, T.; Tokitoh, N. Formation of Zwitterionic Fullerodendron Using a New DBN-Focal Dendron. Sensors 2010, 10, 613-624.

AMA Style

Takaguchi Y, Hosokawa M, Mayahara M, Tajima T, Sasamori T, Tokitoh N. Formation of Zwitterionic Fullerodendron Using a New DBN-Focal Dendron. Sensors. 2010; 10(1):613-624.

Chicago/Turabian Style

Takaguchi, Yutaka; Hosokawa, Maki; Mayahara, Masatoshi; Tajima, Tomoyuki; Sasamori, Takahiro; Tokitoh, Norihiro. 2010. "Formation of Zwitterionic Fullerodendron Using a New DBN-Focal Dendron." Sensors 10, no. 1: 613-624.



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