Please use this identifier to cite or link to this item:
http://hdl.handle.net/2080/4351
Title: | Ferrocene: an Exciting Building Block for Designing Supramolecular Assemblies |
Authors: | Sahu, Nihar Lone, Mohammad Umer Guchhait, Chandrakanta Suriyaa, V Sarkar, Sovik Dey Roy, Raj Kumar Adhikari, Bimalendu |
Keywords: | Supramolecular Polymer Ferrocene Redox responsive Soft Materials Organogel |
Issue Date: | Jan-2024 |
Citation: | International conference on Functional Material (ICFM 2024), IIT Kharagpur, India, 9-11th January 2024 |
Abstract: | Ferrocene (Fc) possesses interesting molecular and electronic attributes, like shape, size, hydrophobicity, rotational flexibility, and redox responsiveness, rendering it a promising building block in developing various supramolecular architectures, including supramolecular polymers (SPs).1 SPs are one-dimensional molecular assemblies with a high degree of internal order formed through non-covalent interactions and are gaining prominence as functional soft materials. In SP formation, the design principle is pivotal, ensuring precise directionality and strength for the non-covalent interactions between monomers. Herein, molecules with Fc as the core component are used to leverage Fc’s distinctive “molecular ball-bearing” properties for optimal molecular conformation and robust intermolecular interaction through enhanced enthalpy gain.2 Molecule 1a-[Fc(CONH-Azo-TDP)2] featuring 1,n'-disubstituted ferrocene, with azobenzene and long alkyl chains was designed and synthesized, with the higher likelihood of forming SPs. We have also designed three reference molecules, 1b-[Fc(CONHAzo-TDP)], 1c-[Ad(CONH-Azo-TDP)2], and 1d-[Bz(CONH-Azo-TDP)2], to investigate and compare Fc’s role in SP formation. 1a formed a super gel, while 1b and 1c did not show gelation or ordered SPs. Surprisingly, despite Fc’s non-π-stackable nature, 1a displayed efficient gelation than 1d, having a larger π surface. 1a showed stronger π-π stacking and intermolecular H-bonding than the reference compounds investigated by UV-Vis spectroscopy and NMR. This hinted at Fc’s conformational flexibility for assisting in efficient SP formation. Additionally, azobenzene was exploited for creating photo-responsive soft material. Based on these findings, possibility of syn vs. anti-conformation toward forming SP is under investigation by introduction of amide bonds at strategic positions. |
Description: | Copyright belongs to proceeding publisher |
URI: | http://hdl.handle.net/2080/4351 |
Appears in Collections: | Conference Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2024_ICFM_NSahu_Ferrocene.pdf | Poster | 507.89 kB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.