Large‐Amplitude Conformational Changes in Self‐Assembled Multi‐Stranded Aromatic Sheets. Issue 5 (30th November 2020)

• Record Type: Journal Article
• Authors: Atcher, Joan; Mateus, Pedro; Kauffmann, Brice; Rosu, Frédéric; Maurizot, Victor; Huc, Ivan
• Is Part Of: Angewandte Chemie international edition. Volume 60:Issue 5(2021)
• Page Start: 2574
• Page End: 2577
• Publication Date: 2020-11-30
• Subjects: aromatic stacking -- conformational change -- foldamers -- self-assembly -- sheets; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202014670
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The orchestration of ever larger conformational changes is made possible by the development of increasingly complex foldamers. Aromatic sheets, a rare motif in synthetic foldamer structures, have been designed so as to form discrete stacks of intercalated aromatic strands through the self‐assembly of two identical subunits. Ion‐mobility ESI‐MS confirms the formation of compact dimers. X‐ray crystallography reveals the existence of two distinct conformational dimeric states that require large changes to interconvert. Molecular dynamics simulation validates the stability of the two conformations and the possibility of their interconversion. Abstract : Unexpected conformational changes involving a global concerted rearrangement of the structure have been evidenced in large multistranded aromatic sheets. Increasing foldamer size thus gives access to new and defined conformational trajectories.