陈强教授、闫凌昊教授及其合作者在Angew. Chem. Int. Ed.上发表论文

作者：

Zhao Ding¹, Xin Ran¹, Tangjun Zhu¹, Zhiqiang Gao², Guangpeng Zhu^3,4, Chaojie Xu¹, Wei Huang⁵, Wenhao Zheng^3,4, Linghao Yan¹*, Hao Zhao²*, Lifeng Chi¹, Qiang Chen¹*

单位：

¹State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, P. R. China.

²Interdisciplinary Research Center For Chemical, Life and Health Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China.

³GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou, P. R. China.

⁴Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, P. R. China.

⁵Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, P. R. China.

摘要：

Incorporation of non-hexagonal topologies into bowl-shaped nanographenes offers opportunities for tailoring their electronic properties and supramolecular behavior, however synthesis of such curved systems remains challenging. Herein, we report the facile synthesis of a bowl-shaped nanographene (TAT) embedded with three circularly fused pentagon–heptagon (5/7) pairs via a three-fold intramolecular Heck reaction. Its concave geometry is verified by nuclear magnetic resonance (NMR) spectroscopy, high resolution mass spectrometry, and x-ray crystallography. Variable-temperature ¹H NMR studies reveal a low bowl-to-bowl inversion barrier of 13.5 ± 1.3 kcal·mol⁻¹, enabling its fast dynamic motion even at room temperature. UV-vis absorption spectroscopy and cyclic voltammetry demonstrate a narrow energy gap, reflecting its highly delocalized π-conjugation system. The concave geometry of TAT allows it to co-assemble with fullerenes, forming a 2:1 complex with C₆₀ as confirmed by single-crystal x-ray diffraction analysis. Furthermore, femtosecond transient absorption spectroscopy reveals its ultrafast nonradiative excited-state deactivation process. Benefiting from this photophysical behavior, water-soluble nanoparticles of TAT encapsulated in an amphiphilic polymer achieve a high photothermal conversion efficiency of 41%. This work establishes a bottom-up strategy for synthesizing an unprecedented bowl-shaped nanographene and provides insights into its intrinsic optoelectronic, supramolecular properties, and photothermal conversion potentials.

影响因子：

16.1

分区情况：

一区

链接：

https://doi.org/10.1002/anie.7946369