Work

Ni(II)‐Directed Supramolecular Metallogel: Stimuli Responsiveness and Semiconducting Device Fabrication

Year: 2024

Type: article

Abstract: Metal‐organic gels (MOGs) are a type of supramolecular complex that have become highly intriguing due to their synergistic combination of inorganic and organic elements. We report the synthesis and characterization of a Ni‐directed supramolecular gel using chiral amino acid L–DOPA (3,4‐dihydroxy phenylalanine) containing ligand, which coordinates with Ni(II) to form metal‐organic gels with exceptional properties. The functional Ni(II)‐gel was synthesized by heating nickel(II) acetate hexahydrate and the L–DOPA containing ligand in DMSO at 70 °C. The rheological tests have verified the gel with its mechanical stability, while a SEM image has shown a spherical aggregate morphology. The gel is photo‐responsive in nature and exhibits gel to sol transformation upon adsorption of toxic gases like NH 3 or H 2 S. Notably, electrical conductivity of the gel was observed in electronic metal‐semiconductor (MS) junctions’ devices with a measured conductivity of 0.9×10 −6 Sm −1 . These devices also exhibited Schottky barrier diode characteristics, underscoring the multifunctional potential of the Ni(II)‐gel.

Source: Chemistry - An Asian Journal

DOI: 10.1002/asia.202401429

Authors: Surajit Singh, Shant Chhetri, Debasish Haldar

Institution: Indian Institute of Science Education and Research Kolkata

Language: English

Topic: Supramolecular Self-Assembly in Materials

Subfield: Biomaterials

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: Indian Institute of Science, Council of Scientific and Industrial Research, India, Indian Institute of Science Education and Research Mohali, Indian Institute of Science Education and Research Kolkata

Award: G448510409