Cage-opened C₆₀ derivatives with pyrazine and pyrimidine-fused naphthalene rings were synthesized by reactions with 1,2- and 1,8-diaminonaphthalenes, respectively. The perimidine-fused one provides a narrower HOMO–LUMO gap, achieving an intense NIR absorption tailing to ca. 850 nm.

中文翻译：

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二氨基萘与开笼 C60 衍生物的反应

通过分别与1,2-和1,8-二氨基萘反应合成了具有吡嗪和嘧啶稠合萘环的开笼C ₆₀衍生物。萘嵌间二氮杂苯融合提供了更窄的 HOMO-LUMO 能隙，实现了约 100% 的强烈近红外吸收拖尾。 850 纳米。