Formation of Zwitterionic Fullerodendron Using a New DBN-Focal Dendron

Sensors

Yutaka Takaguchi²  Maki Hosokawa²  Masatoshi Mayahara²  Tomoyuki Tajima²  Takahiro Sasamori¹ 

[1] Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan; E-Mails:;Graduate School of Environmental Science, Okayama University, Tsushima-Naka 3-1-1, Kita-Ku, Okayama 700-8530, Japan; E-Mails:

关键词: dendrimer;    fullerodendron;    fullerene;    DBN;    fullerene anion;   

DOI  :  10.3390/s100100613

来源: mdpi

【 摘 要 】

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 (λ_max = 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.

【 授权许可】

CC BY   
©2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.