Triggered formation of thixotropic hydrogels by balancing competitive supramolecular synthons

被引：38
作者：
Liu, Kaiqiang [1 ]
Steed, Jonathan W. [2 ]
机构：
[1] Shaanxi Normal Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710119, Peoples R China
[2] Univ Durham, Dept Chem, Durham DH1 3LE, England
来源：
SOFT MATTER | 2013年 / 9卷 / 48期
关键词：
GEL-PHASE MATERIALS; ANION-BINDING; GELATION; GELATORS; METAL; ACID;
D O I：
10.1039/c3sm51949j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two component hydrogels have been obtained by formation of 1 : 1 complexes of bis(pyridyl urea)s with a range of dicarboxylic acids. The gels are thixotropic and undergo an assembly process in which short segments can reversibly assemble into an interconnected fibrous network. NMR and IR spectroscopic data suggest that the gelators form neutral gelator-acid complexes rather than salts. The use of dicarboxylic acids to trigger gelation in bis(pyridyl urea) s parallels analogous triggered gelation of metal ions and halogen bond donors in related systems.
引用
收藏
页码：11699 / 11705
页数：7
相关论文
共 67 条
  • [1] Composites of N,N′-bis-(pyridyl) urea-dicarboxylic acid as new hydrogelators -: a crystal engineering approach
    Adarsh, N. N.
    Kumar, D. Krishna
    Dastidar, Parthasarathi
    [J]. TETRAHEDRON, 2007, 63 (31) : 7386 - 7396
  • [2] Multicomponent hydrogels from enantiomeric amino acid derivatives: helical nanofibers, handedness and self-sorting
    Adhikari, Bimalendu
    Nanda, Jayanta
    Banerjee, Arindam
    [J]. SOFT MATTER, 2011, 7 (19) : 8913 - 8922
  • [3] [Anonymous], ORGANIC CHEM
  • [4] [Anonymous], INORG SYNTH
  • [5] [Anonymous], 1976, CRYSTAL GROWTH GELS
  • [6] [Anonymous], ANAL METHODS SUPRAMO
  • [7] Modular nanometer-scale structuring of gel fibres by sequential self-organization
    Applegarth, L
    Clark, N
    Richardson, AC
    Parker, ADM
    Radosavljevic-Evans, I
    Goeta, AE
    Howard, JAK
    Steed, JW
    [J]. CHEMICAL COMMUNICATIONS, 2005, (43) : 5423 - 5425
  • [8] Supramolecular gels formed from multi-component low molecular weight species
    Buerkle, Lauren E.
    Rowan, Stuart J.
    [J]. CHEMICAL SOCIETY REVIEWS, 2012, 41 (18) : 6089 - 6102
  • [9] Gradual transition from NH ••• pyridyl hydrogen bonding to the NH•••O tape synthon in pyridyl ureas
    Byrne, Peter
    Turner, David R.
    Lloyd, Gareth O.
    Clarke, Nigel
    Steed, Jonathan W.
    [J]. CRYSTAL GROWTH & DESIGN, 2008, 8 (09) : 3335 - 3344
  • [10] Metal-induced gelation in dipyridyl ureas
    Byrne, Peter
    Lloyd, Gareth O.
    Applegarth, Lucas
    Anderson, Kirsty M.
    Clarke, Nigel
    Steed, Jonathan W.
    [J]. NEW JOURNAL OF CHEMISTRY, 2010, 34 (10) : 2261 - 2274
1234567