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Pillararene‐Based Two‐Component Thixotropic Supramolecular Organogels: Complementarity and Multivalency as Prominent Motifs
Author(s) -
Zafrani Yossi,
Kaizerman Dana,
Hadar Maya,
Bigan Nitzan,
Granot Eran,
Ghosh Moumita,
AdlerAbramovich Lihi,
Patolsky Fernando,
Cohen Yoram
Publication year - 2018
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.201801418
Subject(s) - thixotropy , supramolecular chemistry , pillar , complementarity (molecular biology) , chemical engineering , materials science , solvent , chemistry , nanotechnology , molecule , organic chemistry , composite material , structural engineering , biology , engineering , genetics
Rationally designed two‐component supramolecular organogels based on multiple chemical interactions between percarboxylato‐ and peramino‐pillararenes are described. Mixing low concentration solutions (<1 % w/v) of decacarboxylato‐pillar[5]arene ( 1 ) with decaamino‐pillar[5]arenes ( 2 b – d ) affords, rapidly and without heating, organogels displaying an exceptional combination of properties. These supramolecular organogels, the characteristics of which are tunable, were found to be thixotropic and thermally stable, with T gel values in some cases exceeding the boiling point of the embedded solvent. It is demonstrated that both structural complementarity and multivalency are important determinants in the gelation process of these attractive soft materials.