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Volumn 43, Issue 13, 2004, Pages 1663-1667

Responsive cyclohexane-based low-molecular-weight hydrogelators with modular architecture

Author keywords

Amino acids; Gels; Hydrogels; Self assembly

Indexed keywords

AMINO ACIDS; GELATION; HYDROPHOBICITY; MOLECULAR WEIGHT; PH EFFECTS;

EID: 4544280104     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200352396     Document Type: Article
Times cited : (285)

References (55)
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    • note
    • For details on the synthesis of 1-8, see Supporting Information.
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    • note
    • To obtain a more correct value for the critical gelation concentration (CGC), this value was determined in 1N HCl, rather than pure water, thus minimizing the amount of deprotonated gelator which does not contribute to gelation.
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    • note
    • Firm gels could be made not only in water, but also in physiological saline solutions, demonstrating the salt tolerance of our hydrogelators.
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    • note
    • An X-ray crystal structure of a trifunctionalized cyclohexane showing a similar stacking has been reported: ref [7b].
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    • note
    • Supplementary crystallographic data for this paper are available from the IUCr electronic archives. CCDC-214940 (9) contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/ conts/retrieving.html (or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB21EZ, UK; fax: (+44)1223-336-033; or deposit@ccdc.cam.ac.uk).
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    • note
    • gs values could be obtained for these gel samples.
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    • note
    • As the distances between the carboxylic acid (1, 2) or imidazole (5, 6) moieties within a single molecule are relatively large and no conjugation is present, the dissociation behavior of the acids or bases is assumed to be independent of one another; hence single pKa values were taken for all three acid or base moieties.
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    • 4544268207 scopus 로고    scopus 로고
    • note
    • a value of 6.0 was used for the imidazole moieties.[18] For both gelators the concentrations of neutral gelator g corresponding to each point in the graph matched the CGC of the gelators (11.75 mm for 5 and 4.72 mm for 6, Table 1) quite well, as values ranged from 11.2 to 12.5 mm and from 4.3 to 5.1 mm for 5 and 6, respectively.
  • 54
    • 4544294702 scopus 로고    scopus 로고
    • note
    • The results of these studies will be published elsewhere.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.