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Stepwise Self‐Assembly and Dynamic Exchange of Supramolecular Snowflakes
Author(s) -
Zhang Zhe,
Wang Heng,
Shi Junjuan,
Wang Pingshan,
Liu Changlin,
Wang Ming,
Li Xiaopeng
Publication year - 2019
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.201800070
Subject(s) - chemistry , supramolecular chemistry , terpyridine , snowflake , mass spectrometry , ligand (biochemistry) , crystallography , yield (engineering) , self assembly , nanotechnology , metal , crystal structure , organic chemistry , chromatography , receptor , biochemistry , physics , materials science , meteorology , snow , metallurgy
Snowflake, a highly symmetrical hexagram figure, is challenging to be expressed by chemistry/supramolecular chemistry due to the complex structure. Herein, we have constructed super snowflake supramolecules using terpyridine (tpy)‐based metal‐organic building blocks with < tpy‐Ru(II)‐tpy > and < tpy‐Zn(II)‐tpy > connectivities through stepwise strategies in high yield. The structures were characterized by multi‐dimensional mass spectrometry and multi‐dimensional NMR spectrometry. In order to address the stability/tolerance of our designed super snowflake structures, ligand exchange behaviors between different supramolecules with various arm length were fully investigated by mass spectrometry. The study revealed that three modes could exist in such binary systems, including full exchange, partial exchange and self‐sorting (no exchange) depending on the length difference of ligands.