3'-phenyl-3'H-cyclopropa[8,25][5,6]fullerene-C70-D5h(6)-3'-butanoic acid, methyl ester 3'-phenyl-3'H-cyclopropa[8,25][5,6]fullerene-C70-D5h(6)-3'-butanoic acid methyl ester [6,6]-phenyl C 71 butyric acid methyl ester fullerene (6,6)-phenyl-C71 fullerene-butyric acid methyl ester (6,6)-phenyl-C71-butyric acid methyl ester fullerene (6,6)-phenyl-C₇₁-butyric acid methyl ester fullerene [6,6]-phenyl C71 butyric acid methyl ester fullerene [6,6]-phenyl C71 fullerene butyric acid methyl ester [6,6]-phenyl C71-butyric acid methyl ester fullerene [6,6]-phenyl-C70-butyric acid methyl ester fullerene [6,6]-phenyl-C71 fullerene-butyric acid methyl ester [6,6]-phenyl-C71-butyric acid methyl ester fullerene 6,6-phenyl-C71-butyric acid methyl ester fullerene [6,6]-phenyl C71-butyric acid methyl ester blend phenyl-C71-butyric acid methyl ester fullerene phenyl-C₇₁-butyric-acid-methyl ester fullerene (6,6)-phenyl C71-butyric acid methyl ester (6,6)-phenyl C₇₁-butyric acid methyl ester (6,6)-phenyl-C71-butyric acid methyl ester (6,6)-phenyl-C₇₀-butyric acid methyl ester (6,6)-phenyl-C₇₁-butyric acid methyl ester [6,6]-phenyl C71 butyric acid methyl ester [6,6]-phenyl C₇₀ butyric acid methyl ester [6,6]-phenyl C₇₀-butyric acid methyl ester [6,6]-phenyl C₇₁ butyric acid methyl ester [6,6]-phenyl C₇₁ butyric acid methyl-ester [6,6]-phenyl C₇₁-butyric acid methyl ester [6,6]-phenyl-C61-butyric acid methyl ester [6,6]-phenyl-C70 butyric acid methyl ester [6,6]-phenyl-C71 butyric acid methyl ester [6,6]-phenyl-C71-butyric acid methyl ester [6,6]-phenyl-C₆₁-butyric acid methyl ester [6,6]-phenyl-C₇₀-butyric acid methyl ester [6,6]-phenyl-C₇₁-butyric acid methyl ester [6-6]-phenyl C71 butyric acid methyl ester [6,6]-phenyl-C₇₁-butyric acid methylester phenyl-C70-butyric acid methyl ester phenyl-C71-butyric acid methyl ester phenyl-C₇₁-butyric acid methyl ester phenyl-C₇₁-butyric-acid-methyl ester [6,6]-phenyl-C₇₁-butyric acid ester PC70BM nanoparticles example of fullerene [70]PCBM fullerenes [70]PCBM fullerene PC71BM fullerenes PC₇₁BM fullerenes PC71BM fullerene PC₇₀BM fullerene PC₇₁BM fullerene PCBM fullerene C₇₁ fullerene PC₇₁BM blend PC[70]BM [70]PCBM PC70BM PC71BM PC₇₀BM PC₇₁BM PCBM