Bowl on the ring:Molecular crowns hosting fullerenes synergistically by buckybowl and nanohoop  

作　　者：Wenru Song Zhe Liu Xinqiang Hua Shaojie Yang Xia Tang ChengshanYuan Zitong Liu Hao-Li Zhang Xiangfeng Shao 

机构地区：[1]State Key Laboratory of Applied Organic Chemistry,Lanzhou University,Lanzhou,Gansu Province,China

出　　处：《Aggregate》2024年第6期460-472,共13页聚集体(英文)

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:22371107,22175080;the Science and Technology Major Program of Gansu Province of China,Grant/Award Number:22ZD6FA006。

摘　　要：Curvedπ-electron systems show unique properties and assembly feature that enable the specific applications in materials science and supramolecular chemistry.Herein,fullerene,carbon nanohoop andπ-bowl are integrated by the coupling of covalent and supramolecular tactics.Firstly,π-bowl trichalcogenasumanenes(TCSs)are fused with a carbon nanohoop[10]CPP via covalent joint to form molecular crowns 4a/4b,which show structural and electronic complementarity and accordingly strong binding affinity to C_(60)/C_(70).Secondly,the supramolecular assemblies of 4a/4b with fullerenes afford the host-guest complexes 4a/4b⊃C_(60)/C_(70) in solution(molar ratio,2:1)and solid state(molar ratio,1:1).In the crystals of host–guest complexes,the intra-cluster and inter-cluster interactions are respectively dominated by the[10]CPP and TCSs moieties of 4a/4b.Additionally,it is found that 4a/4b are good photosensitizers for generating ^(1)O_(2) and show structural adaptability in accordance to assembly conditions.4a/4b take an endo-conformation in their own crystals with TCSs and[10]CPP moieties being bowl-shaped and elliptical,respectively.In contrast,the[10]CPP on 4a/4b changes into circular and the TCSs moiety becomes flat(for 4b)or shows bowl inversion to be exo-conformation(for 4a)in 4a/4b⊃C_(60)/C_(70).

关 键 词：carbon nanohoop fullerene molecular crown supramolecular assembly π-bowl 

分 类 号：O62[理学—有机化学]