2026-10-12T00:26:32Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33781064 2026-09-15T09:11:51Z category_146 category_16 category_272 category_873 category_122 portal_63 item_type_3 month_year_09_2026

Water-Mediated Dissolution–Reassembly of a Viologen-Based Coordination Polymer for Activating Multi-stimuli Chromism Xin Li (51274) Zi-Xuan Guo (22817582) Chun-Li Song (3253230) Ying-Wei Yang (1292340) Space Science Physiology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Mental Health viable internal lever uniquely displays mechanochromism selective mechanical responsiveness responsive framework materials remains inactive whereas pronounced conformational reorganization exhibit reversible photochromic dissolution – reassembly crystal analyses reveal based coordination polymer 3 </ b 2 </ b 1 </ b water coordination induces mediated coordination coordination polymers transfer pathways torsion conformer thermochromic responses stimuli chromism radical generation octahedral conversion metal nodes influence charge findings demonstrate environment modulation enhanced π closely associated Structural reconstruction in coordination polymers (CPs) offers a powerful yet underexplored route to emergent functionality beyond static framework design. Here we report a water-mediated dissolution–reassembly coordination reconstruction process that transforms a tetrahedral Co(II)-based two-dimensional CP (<b>CoVN-1</b>) into two distinct octahedral one-dimensional phases (<b>CoVN-2</b> and <b>CoVN-3</b>) through dissolution–reassembly. Single-crystal analyses reveal that water coordination induces a tetrahedral-to-octahedral conversion at the metal nodes, accompanied by pronounced conformational reorganization of viologen ligands. This coordination reconstruction activates multi-stimuli chromism such that <b>CoVN-1</b> remains inactive whereas <b>CoVN-2</b> and <b>CoVN-3</b> exhibit reversible photochromic and thermochromic responses and <b>CoVN-3</b> uniquely displays mechanochromism. The selective mechanical responsiveness is closely associated with enhanced π-conjugation and more favorable intermolecular orbital coupling in the low-torsion conformer. These findings demonstrate that water-mediated coordination-environment modulation can influence charge-transfer pathways and radical generation in CPs, establishing coordination geometry reconstruction as a viable internal lever for adaptive, multi-responsive framework materials. 2026-09-15T00:00:00Z Dataset Dataset 10.1021/polymscitech.6c00114.s003 https://figshare.com/articles/dataset/Water-Mediated_Dissolution_Reassembly_of_a_Viologen-Based_Coordination_Polymer_for_Activating_Multi-stimuli_Chromism/33781064 CC BY-NC 4.0