Simultaneous Intercalation of 1‐Naphthylacetic Acid and Indole‐3‐butyric Acid into Layered Double Hydroxides and Controlled Release Properties

Abstract

Controlled release formulations have been shown to have potential in overcoming the drawbacks of conventional plant growth regulators formulations. A controlled-release formulation of 1-naphthylacetic acid (NAA) and indole-3-butyric acid (IBA) simultaneous intercalated MgAl-layered double hydroxides (LDHs) was prepared. The synthetic nanohybrid material was characterized by various techniques, and release kinetics was studied. NAA and IBA anions located in the gallery of MgAl-LDHs with bilayer arrangement, and the nanohybrids particles were of typical plate-like shape with the lateral size of 50–100 nm. The results revealed that NAA and IBA have been intercalated into the interlayer spaces of MgAl-LDHs. The release of NAA and IBA fits pseudo-second-order model and is dependent on temperature, pH value, and release medium. The nanohybrids of NAA and IBA simultaneously intercalated in LDHs possessed good controlled release properties.

Chemisorption and sustained release of cefotaxime between a layered double hydroxide and polyvinyl alcohol nanofibers for enhanced efficacy against second degree burn wound infection

“…Besides, the basal spacing of the (003) plane decreased from 7.82271Å in the case of LDH to 7.58808Å in Zn-Al LDH/cefotax, which revealed a less effective penetration of cefotax into the Zn-Al/LDH interlayers. [39][40][41] This diminishing may refer to one of the following reasons: the removal of water molecules, rearrangement of Zn/ Al ions, and partial replacement of chloride ions by cefotax molecules or the adsorption of cefotax molecules on the surface of LDH via hydrogen-bonding, 42 as per the scheme submitted. Also, the d003 of the LDH and LDH/cefotax Nano composite was double that of d006 signifying a good layer structure.…”

Nanolayered composite with enhanced ultraviolet ray absorption properties from simultaneous intercalation of sunscreen molecules

“…Application of the layered material as a nanometer-sized host has garnered considerable attention due to its good biocompatibility, low cytotoxicity, ease of laboratory preparation, and ease of tailoring for required physical and chemical properties. [1][2][3][4][5] Simultaneous intercalation of two or more anions into the interlayer region of LDH was previously attempted with amino acids, 6 ligand and ligation activator, 7 diagnosis and therapy agents, [8][9][10] herbicides, [11][12][13] polymers, 14 nucleoside monophosphates, 15 and isomeric benzoates. 16 There is a notable paucity of scientific literature investigating interlayer region intercalation of two or more ultraviolet (UV) ray absorbents.…”

Plant growth regulation by seed coating with films of alginate and auxin-intercalated layered double hydroxides

“…Li et al [26] synthesized two MgAl-LDHs (Mg/Al molar ratio = 2.0) intercalated with NAA and IBA, and evaluated the influence of temperature, pH value, and electrolyte solutions on the in vitro release. At a temperature of 25 °C, the release of NAA and IBA was quick in the first 100 min, followed by a gradual release profile.…”