Anion-induced differential assembly and structural transformation of supramolecular coordination cages

Shao-Ping Zheng ¹Yao-Wei Xu ¹Pei-Yang Su ²Chen-Hui Liu ¹Yin-Hui Huang ¹Yu-Lin Lu ¹Zhang-Wen Wei ¹Zhiwei Jiao ¹Hai-Sen Xu ¹Cheng-Yong Su³

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作者信息

1. MOE Laboratory of Bioinorganic and Synthetic Chemistry,Lehn Institute of Functional Materials,School of Chemistry,Sun Yat-sen University,Guangzhou 510006,China
2. MOE Laboratory of Bioinorganic and Synthetic Chemistry,Lehn Institute of Functional Materials,School of Chemistry,Sun Yat-sen University,Guangzhou 510006,China;Institute of Environmental Research at Greater Bay Area,Guangzhou University,Guangzhou 510006,China
3. MOE Laboratory of Bioinorganic and Synthetic Chemistry,Lehn Institute of Functional Materials,School of Chemistry,Sun Yat-sen University,Guangzhou 510006,China;State Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China
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Abstract

The intimate host-anion interactions will regulate thermodynamics and kinetics in the self-assembly of cationic cages mimicking biological counterparts.Herein,we report construction and transformation of three Pd(Ⅱ)-based metal-organic cages(MOCs)depending on different anions.Stoichiometric conversions of the lantern-shaped MOC-34 into either octahedral MOC-35 or tricapped trigonal prism MOC-36 are induced by BF4-or NO3-,respectively.MOC-36 is kinetically favored and can undergo quantitative con-version to the thermodynamically preferred MOC-35 upon heating,accelerated by excess BF4-to motivate dissociative dynamics of Pd-vertices and lower activation barrier of cage transformation.The guest encap-sulation behaviors of MOC-35 and MOC-36 have also been tested.These results manifest a significance of host-anion dynamics beyond complementary anion template,shedding light on the understanding of intricate anion recognition in nature.

Key words

Supramolecular coordination cage/Dynamic host-anion interactions/Structural transformation/Anion receptor/Guest inclusion

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基金项目

NKRD Program of China(2021YFA1500401)

国家自然科学基金(21821003)

国家自然科学基金(21890380)

LIRTP of Guangdong Pearl River Talents Program(2017BT01C161)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCDCSCD

影响因子：0.771

ISSN：1001-8417

参考文献量42

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