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Cover Feature: Porous Molecular Capsules as Non‐Polymeric Transducers of Mechanical Forces to Mechanophores (Chem. Eur. J. 7/2020)
Author(s) -
Jędrzejewska Hanna,
Wielgus Ewelina,
Kaźmierski Sławomir,
Rogala Halina,
Wierzbicki Michał,
Wróblewska Aneta,
Pawlak Tomasz,
Potrzebowski Marek J.,
Szumna Agnieszka
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201905366
Subject(s) - covalent bond , hydrazone , breakage , mechanochemistry , molecule , disulfide bond , chemistry , solvent , porosity , polymer chemistry , materials science , chemical engineering , organic chemistry , composite material , biochemistry , engineering
Molecular capsules can serve as stress‐sensitive units, which effectively transduce energy to mechanophores (here disulfide and hydrazone bonds). Upon mechanical treatment of empty capsules breakage of covalent bonds is induced, which enables complexation of large guests in covalent, otherwise non‐permeable capsules. Solid‐state NMR spectroscopy and solvent‐free MALDI experiments indicate that complexation takes place in the solid state and involves breakage of hydrazone and disulfide bonds. The same bonds present in non‐porous molecules are not activated under similar conditions. More information can be found in the Full Paper by M. J. Potrzebowski, A. Szumna, et al. on page 1558.