Ionic manipulation of charge-transfer and photodynamics of [60]fullerene confined in pyrrolo-tetrathiafulvalene cage
作者:Steffen Bähring、Karina R. Larsen、Mustafa Supur、Kent A. Nielsen、Thomas Poulsen、Kei Ohkubo、Craig W. Marlatt、Eigo Miyazaki、Kazuo Takimiya、Amar H. Flood、Shunichi Fukuzumi、Jan O. Jeppesen
DOI:10.1039/c7cc03775a
日期:——
electron donating monopyrrolotetrathiafulvalene units was synthesised to host electron accepting [60]fullerenes. Formation of a strong 1:1 donor–acceptor (D–A) complex C60⊆1 was confirmed by solid state X-ray analysis as well as 1H NMR and absorption spectroscopic analyses of the arising charge-transfer (CT) band (λ = 735 nm, ε ≈ 840 M−1 cm−1). Inserting Li+ inside the [60]fullerene increased the binding
合成了一个包含三个给电子单吡咯并四硫富瓦烯单元的笼状分子,以容纳接受电子的[60]富勒烯。强烈1的形成:1供体-受体(d-A)络合物C 60 ⊆ 1通过固态X射线分析以及确认1 H NMR和吸收所产生的电荷转移的光谱分析(CT)频带(λ = 735 nm,ε≈840 M -1 cm -1)。在[60]富勒烯中插入Li +可增加28倍的结合力(K a = 3.7×10 6 M -1),并且CT带向近红外(NIR)区域有较大的红移(λ= 1104nm,观察到ε≈4800M - 1cm -1)。
Olive-Shaped Organic Cages: Synthesis and Remarkable Promotion of Hydrazone Condensation through Encapsulation in Water
作者:Yan-Yan Xu、Hong-Kun Liu、Ze-Kun Wang、Bo Song、Dan-Wei Zhang、Hui Wang、Zhiming Li、Xiaopeng Li、Zhan-Ting Li
DOI:10.1021/acs.joc.0c02792
日期:2021.3.5
neutral molecules. Such encapsulation has been applied for the promotion of both two- or three-component hydrazone condensation in water. For two-component reactions, the yields of the resulting monohydrazones are increased from 5–10 to 90–96%. For three-component reactions of hydrazinecarbohydrazide with 11 aromatic aldehydes, in the presence of the organic cages, the bihydrazone products can be produced