Supramolecular Assembly of Conjugated Polymers under Vibrational Strong Coupling. (30th July 2021)

• Record Type: Journal Article
• Authors: Joseph, Kripa; Kushida, Soh; Smarsly, Emanuel; Ihiawakrim, Dris; Thomas, Anoop; Paravicini‐Bagliani, Gian Lorenzo; Nagarajan, Kalaivanan; Vergauwe, Robrecht; Devaux, Eloise; Ersen, Ovidiu; Bunz, Uwe H. F.; Ebbesen, Thomas W.
• Is Part Of: Angewandte Chemie. Volume 133:Number 36(2021)
• Page Start: 19817
• Page End: 19822
• Publication Date: 2021-07-30
• Subjects: assembly -- kinetics -- strong coupling -- supramolecular -- vibrations; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202105840
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Strong coupling plays a significant role in influencing chemical reactions and tuning material properties by modifying the energy landscapes of the systems. Here we study the effect of vibrational strong coupling (VSC) on supramolecular organization. For this purpose, a rigid‐rod conjugated polymer known to form gels was strongly coupled together with its solvent in a microfluidic IR Fabry–Perot cavity. Absorption and fluorescence studies indicate a large modification of the self‐assembly under such cooperative VSC. Electron microscopy confirms that in this case, the supramolecular morphology is totally different from that observed in the absence of strong coupling. In addition, the self‐assembly kinetics are altered and depend on the solvent vibration under VSC. The results are compared to kinetic isotope effects on the self‐assembly to help clarify the role of different parameters under strong coupling. These findings indicate that VSC is a valuable new tool for controlling supramolecular assemblies with broad implications for the molecular and material sciences. Abstract : From fibers to flakes—Modifying the morphology of supramolecular organization through vibrational strong coupling is reported.