Photoinduced transformations of stiff-stilbene-based discrete metallacycles to metallosupramolecular polymers.

ABSTRACT: Control over structural transformations in supramolecular entities by external stimuli is critical for the development of adaptable and functional soft materials. Herein, we have designed and synthesized a dipyridyl donor containing a central Z-configured stiff-stilbene unit that self-assembles in the presence of two 180° di-Pt(II) acceptors to produce size-controllable discrete organoplatinum(II) metallacycles with high efficiency by means of the directional-bonding approach. These discrete metallacycles undergo transformation into extended metallosupramolecular polymers upon the conformational switching of the dipyridyl ligand from Z-configured (0°) to E-configured (180°) when photoirradiated. This transformation is accompanied by interesting morphological changes at nanoscopic length sc

SUBMITTER: Yan X 

PROVIDER: S-EPMC4066485 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature