离子液体的凝胶化因其在不同学科中的广泛应用而备受关注。这些“绿色溶剂”具有环保功能,已经解决了许多常见问题。为了扩展其应用,已经通过使用基于氨基酸的低分子量化合物实现了离子液体的胶凝。胶凝剂分子骨架中各个片段的变化(包括氨基酸和N和C末端的保护基)使人们对电凝胶化过程的结构与性质相关性有了一个了解。在N末端含有一个被苯基或环己基保护的基于氨基酸的分子的芳香环,在离子液体的凝胶化中非常有效。对于脂族氨基酸,苯基作为N末端保护剂时,凝胶化作用更为突出。借助场发射SEM研究了导致离子液体中胶凝剂超分子缔合的可能因素,1 H NMR,FTIR和发光研究。亲水-亲脂平衡需要针对一个分子进行优化,以诱导绿色溶剂胶凝。有趣的是,为了最大程度地利用这些绿色溶剂,已将这些离子凝胶用作模板,用于合成均一尺寸的TiO 2纳米颗粒(25-30 nm)。此外,作为其应用的补充,离子凝胶可作为阳离子和阴离子染料的有效
作者:Debapratim Das、Antara Dasgupta、Sangita Roy、Rajendra Narayan Mitra、Sisir Debnath、Prasanta Kumar Das
DOI:10.1002/chem.200501638
日期:2006.6.23
techniques, such as (1)H NMR spectroscopy, circulardichroism (CD), steady-state fluorescence spectroscopy, and field-emission scanning electron microscopy (FESEM) were applied to determine the formation and architecture of the hydrogel. The new gelator with a minimum gelation concentration (MGC) of 0.3 % w/v shows prolonged stability and a low melting temperature (39 degrees C). (1)H NMR experiments revealed
Amino Acid Based Low-Molecular-Weight Ionogels as Efficient Dye-Adsorbing Agents and Templates for the Synthesis of TiO<sub>2</sub>Nanoparticles
作者:Sounak Dutta、Dibyendu Das、Antara Dasgupta、Prasanta Kumar Das
DOI:10.1002/chem.200901917
日期:2010.2.1
liquids has been achieved by using aminoacid‐based low‐molecular‐weight compounds. Variation of individual segments in the molecular skeleton of the gelators, which comprise the aminoacid and the protecting groups at the N and C termini, led to an understanding of the structure–property correlation of the ionogelation process. An aromatic ring containing aminoacid‐based molecules protected with a phenyl
离子液体的凝胶化因其在不同学科中的广泛应用而备受关注。这些“绿色溶剂”具有环保功能,已经解决了许多常见问题。为了扩展其应用,已经通过使用基于氨基酸的低分子量化合物实现了离子液体的胶凝。胶凝剂分子骨架中各个片段的变化(包括氨基酸和N和C末端的保护基)使人们对电凝胶化过程的结构与性质相关性有了一个了解。在N末端含有一个被苯基或环己基保护的基于氨基酸的分子的芳香环,在离子液体的凝胶化中非常有效。对于脂族氨基酸,苯基作为N末端保护剂时,凝胶化作用更为突出。借助场发射SEM研究了导致离子液体中胶凝剂超分子缔合的可能因素,1 H NMR,FTIR和发光研究。亲水-亲脂平衡需要针对一个分子进行优化,以诱导绿色溶剂胶凝。有趣的是,为了最大程度地利用这些绿色溶剂,已将这些离子凝胶用作模板,用于合成均一尺寸的TiO 2纳米颗粒(25-30 nm)。此外,作为其应用的补充,离子凝胶可作为阳离子和阴离子染料的有效
Superior SWNT dispersion by amino acid based amphiphiles: designing biocompatible cationic nanohybrids
作者:Sayanti Brahmachari、Dibyendu Das、Prasanta Kumar Das
DOI:10.1039/c0cc02464c
日期:——
Stable aqueous SWNT dispersion up to 92% was achieved using amino acid based amphiphiles through a structure–property investigation. The nanohybrids showed remarkable serum stability and biocompatibility to mammalian cells.
Intermolecular Sensitization of a Terbium-Containing Amphiphile by an Integral Membrane Protein
作者:Catherine L. Davies、Nicholas G. Housden、Anne-K. Duhme-Klair
DOI:10.1002/anie.200803828
日期:2008.11.3
Efficient and Simple NaBH<sub>4</sub> Reduction of Esters at Cationic Micellar Surface
作者:Debapratim Das、Sangita Roy、Prasanta Kumar Das
DOI:10.1021/ol0481176
日期:2004.10.1
A simple, efficacious, and biocompatible methodology for reducing esters with sodium borohydride at an aqueous cationic micellar surface under ambient conditions has been developed. The present method holds promise for future use in selective functional group reduction and stereocontrolled alcohol synthesis.