Vesicular self-assembly of a natural triterpenoid arjunolic acid in aqueous medium: study of entrapment properties and in situ generation of gel–gold nanoparticle hybrid material

Abstract

Formation of vesicular gel and gel–gold nanoparticle hybrid material from arjunolic acid extractable from the saw-dust of Terminalia arjuna.

Mimusops elengi bark extract mediated green synthesis of gold nanoparticles and study of its catalytic activity

“…The extracts of Acacia nilotica leaf (Majumdar and Bag 2013), Lantana camara leaf (Dash et al 2014a), Abroma augusta Linn bark (Das et al 2014), Breynia rhamnoides (Gangula et al 2011), Saraca indica (Dash et al 2014b), Piper betle (Punuri et al 2012), green coconut shell (Paul et al 2014), etc., have been utilized for the synthesis of AuNPs. During our investigations on the utilization of triterpenoids (C30s) as renewable functional nano-entities Bag and Dash 2011;Bag and Paul 2012;Bag and Majumdar 2014), it occurred to us that the medicinally important bark extract of Mimusops elengi, rich in polyphenolic compounds, can be utilized for the synthesis AuNPs from HAuCl 4 (Baliga et al 2011;Kadam et al 2012).…”

Evolution of Vesicular Self‐Assemblies of the Salts of a Natural Triterpenoid Arjunolic Acid into Superstructured Ambidextrous Gels and Study of Their Entrapment Properties

“…Among various supramolecular building blocks from natural resources, the pentacyclic triterpenoid molecules have gained a significant attention of the scientific community in recent years because these nano‐sized chiral triterpenoid molecules possess a rigid backbone along with different functional groups at different positions and orientations . Because of this structural uniqueness of these triterpenoid molecules, they can even self‐assemble without any structural modification yielding diversified self‐assembled structures like fibers,, vesicles,,,,, flowers,, etc. which have been exploited as drug delivery vehicle, dye removing agent, template for the synthesis of organic‐inorganic advanced hybrid material for using it as recyclable heterogeneous catalyst, etc.…”

Triterpenoid‐Based Self‐Healing Supramolecular Polymer Hydrogels Formed by Host–Guest Interactions

“…These features not only endow them with pharmacological properties, but also make them ideal building blocks for self‐assembling versatile supramolecular structures . Since the first supramolecular organogel based on a pentacyclic triterpenoid was reported by Bag and co‐workers in 2005, a series of pentacyclic triterpenoid‐based small molecules have been designed and synthesized to study their supramolecular gelation behavior . For example, Mezzenga et al.…”

“…[10][11][12][13] Since the first supramolecular organogel based on ap entacyclic triterpenoid was reported by Bag and co-workers in 2005, [14] as eries of pentacyclic triterpe-noid-based smallm olecules have been designed and synthesized to study their supramolecular gelation behavior. [15][16][17][18][19][20][21][22][23][24] For example, Mezzenga et al reported that the right-handedf ibrillar networks in the hydrogel of glycyrrhizic acid could be utilized as scaffolds for hybrid nanomaterials in heterogeneous catalysis. [15] We foundt hat ap yridinium-tailored glycyrrhetinic acid amphiphile could transfer and magnify its chirality at the supramolecular level,a nd consequently result in the formation of helical nanofibers.…”