High-Yield Synthesis and Extraction of Endohedral Metallofullerenes Dy@C_(2n)

The successful encapsulation of dysprosium(Dy) into fullerene cages by activating the Dy2O3, containing graphite rods in situ 'back-burning' carbonarc evaporation with a high-yield of pyridine extraction technique is reported.

笼内金属富勒烯的合成与分析

自1985年,Smalley等人首次在飞行时间质谱仪中检测到C60以来[1],富勒烯碳原子族的研究便不断深入,最初发现的激光蒸发含稀土化合物的石墨只能得到微量的金属富勒烯,仅限于质谱检测,直到1990年,Kratschmer等人采用石墨电子弧放电首次得到宏观量的富勒烯[2],才使得富勒烯研究进入了实质性的研究阶段.……

PRODUCTION, ISOLATION AND SPECTROSCOPIC STUDIES OF THE ENDOHEDRAL FULLERENE Sc_2@C_(80)(I-III)

The isolation of multiple-isomers of Sc2@C80 (I, II, III) endohedral metallofullerenes is reported for the first time. The new C80-based Sc-metallofullerenes are characterized by UV-Vis-NIR absorption spectroscopy and detailed chromatographic retention time data. A close relationship between the isomer structure and the corresponding HPLC retention time of the metallofullerenes is presented.

通过Y_(3)N@C_(80)内嵌金属富勒烯修饰调节钙钛矿太阳能电池的界面性质

富勒烯衍生物在钙钛矿太阳能电池(PSC)中具有广泛的应用,例如作为电子传输层(ETL)、界面改性剂或添加剂.然而,很少有研究报道利用内嵌金属富勒烯(EMF)来改善PSC的性能.在此,本文报道了一种新颖的Y_(3)N@C_(80) EMFs的合成,并将其用作SnO_(2) ETL基PSCs的界面改性剂.结果表明,在SnO_(2) ETL器件中观察到的能级不匹配和载流子复合严重等问题,在Y_(3)N@C_(80)分子的修饰下得以改善.与SnO_(2) ETL相比,由于SnO_(2)-Y_(3)N@C_(80)/钙钛矿界面之间更合适的能级排列和更快的电子提取,器件开路电压(VOC)从1.10 V(SnO_(2))显著提高到1.14 V(SnO_(2)-Y_(3)N@C_(80)),能量转换效率由20.59%提高到21.66%,并大大降低了电池的滞后效应.此外,Y_(3)N@C_(80)的疏水性和晶界减少导致缺陷态密度降低,使得目标器件的稳定性也有所提高.