2002
DOI: 10.1039/b205048j
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Fullerene sensors based on calix[5]arene

Abstract: A new class of fullerene sensors based on calix[5]arenes has produced the highly sensitive detection of C60 and C70.

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Cited by 62 publications
(19 citation statements)
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“…All these bromo derivatives 3a-3d were subjected to cross-coupling reactions with bis(pinacolato)-diboron [22] in the presence of Pd(dppf)Cl 2 and KOAc in dioxane at 80°C to give the series of pinacol boronates 4a-4d in good yields of 60-91 % (Scheme 2, Table 2). Compounds 4a and 4b were new, while known compounds 4c [23] and 4d [21a] were prepared by this method in much higher yields (91 and 81 %, respectively) than alternative methods reported in the literature (30 and 42 %, respectively).…”
Section: Synthesis Of Ligand Building Blocksmentioning
confidence: 97%
“…All these bromo derivatives 3a-3d were subjected to cross-coupling reactions with bis(pinacolato)-diboron [22] in the presence of Pd(dppf)Cl 2 and KOAc in dioxane at 80°C to give the series of pinacol boronates 4a-4d in good yields of 60-91 % (Scheme 2, Table 2). Compounds 4a and 4b were new, while known compounds 4c [23] and 4d [21a] were prepared by this method in much higher yields (91 and 81 %, respectively) than alternative methods reported in the literature (30 and 42 %, respectively).…”
Section: Synthesis Of Ligand Building Blocksmentioning
confidence: 97%
“…Sibley et al [38] have also estimated the formation constants for the complexes of C 60 with aniline and the derivatives using BH equation. The most interesting feature of the present investigation is that 1 binds C 70 in preference to C 60 [39]. 2.285 Â 10 5 dm 3 mol À1 and 9.72 Â 10 4 dm 3 mol À1 for C 70 and C 60 , respectively, gives the K C70/C60 selectivity of $2.3 in CHCl 3 .…”
Section: Equation In the Formmentioning
confidence: 95%
“…At approximately the same time, the groups of Raston and Shinkai, working independently, reported the selective purification of C 60 from fullerene soot by its selective association with p-tert-butylcalix [8]arene [21,22]. Drawing from these seminal investigations, several receptors based on calixarenes-mainly calix [5]arenes-have been described [23][24][25][26][27][28][29][30][31][32][33][34].…”
Section: Historical Notes On the Noncovalent Chemistry Of Fullerenesmentioning
confidence: 96%