A dipeptide with a long fatty acid chain at its N-terminus gives hydrogels in phosphate buffer in the pH range 7.0-8.5. The hydrogel with a gelator concentration of 0.45% (w/v) at pH 7.46 (physiological pH) provides a very good platform to study dynamic changes within a supramolecular framework as it exhibits remarkable change in its appearance with time. Interestingly, the first formed transparent hydrogel gradually transforms into a turbid gel within 2 days. These two forms of the hydrogel have been thoroughly investigated by using small angle X-ray scattering (SAXS), powder X-ray diffraction (PXRD), field emission scanning electron microscopic (FE-SEM) and high-resolution transmission electron microscopic (HR-TEM) imaging, FT-IR and rheometric analyses. The SAXS and low angle PXRD studies substantiate different packing arrangements for the gelator molecules for these two different gel states (the freshly prepared and the aged hydrogel). Moreover, rheological studies of these two gels reveal that the aged gel is stiffer than the freshly prepared gel.
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Indian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Banerjee, Supratim
Das, Rajat K.
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Indian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, France
Univ Bordeaux, ICMCB, UPR9048, CNRS, F-33600 Pessac, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Das, Rajat K.
Terech, Pierre
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INAC, UMR CEA CNRS UJF Grenoble, SPrAM, F-38054 Grenoble, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Terech, Pierre
de Geyer, Arnaud
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INAC, CEA Grenoble, SP2M SGX, F-38054 Grenoble, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
de Geyer, Arnaud
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Aymonier, Cyril
Loppinet-Serani, Anne
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Univ Bordeaux, ICMCB, UPR9048, CNRS, F-33600 Pessac, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Loppinet-Serani, Anne
Raffy, Guillaume
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Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Raffy, Guillaume
Maitra, Uday
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Indian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Maitra, Uday
Del Guerzo, Andre
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Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Del Guerzo, Andre
Desvergne, Jean-Pierre
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Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
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Univ Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, SpainUniv Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, Spain
Berdugo, Cristina
Miravet, Juan F.
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Univ Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, SpainUniv Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, Spain
Miravet, Juan F.
Escuder, Beatriu
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Univ Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, SpainUniv Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, Spain
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Indian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Banerjee, Supratim
Das, Rajat K.
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Indian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, France
Univ Bordeaux, ICMCB, UPR9048, CNRS, F-33600 Pessac, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Das, Rajat K.
Terech, Pierre
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INAC, UMR CEA CNRS UJF Grenoble, SPrAM, F-38054 Grenoble, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Terech, Pierre
de Geyer, Arnaud
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INAC, CEA Grenoble, SP2M SGX, F-38054 Grenoble, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
de Geyer, Arnaud
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Aymonier, Cyril
Loppinet-Serani, Anne
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Univ Bordeaux, ICMCB, UPR9048, CNRS, F-33600 Pessac, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Loppinet-Serani, Anne
Raffy, Guillaume
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Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Raffy, Guillaume
Maitra, Uday
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Indian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Maitra, Uday
Del Guerzo, Andre
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Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
Del Guerzo, Andre
Desvergne, Jean-Pierre
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Univ Bordeaux, ISM, UMR 5255, F-33400 Talence, France
CNRS, ISM, UMR 5255, F-33400 Talence, FranceIndian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India
机构:
Univ Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, SpainUniv Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, Spain
Berdugo, Cristina
Miravet, Juan F.
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Univ Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, SpainUniv Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, Spain
Miravet, Juan F.
Escuder, Beatriu
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Univ Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, SpainUniv Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12071, Spain