Effect of poly(thiophene)s topology on their third-order nonlinear optical response. (22nd April 2021)

• Record Type: Journal Article
• Authors: Vertommen, Stien; Deschaume, Olivier; Bartic, Carmen; De Winter, Julien; Gerbaux, Pascal; Verbiest, Thierry; Koeckelberghs, Guy
• Is Part Of: Polymer. Volume 222(2021)
• Publication Date: 2021-04-22
• Subjects: Conjugated polymers -- Nonlinear polymers -- Kumada catalyst transfer condensative polymerization -- Third-order nonlinear optical response -- Third-harmonic scattering; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2021.123630
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: The research area of nonlinear topologies of conjugated polymers (CPs) became a topic of growing interest due to their unique optoelectronic properties compared to CPs with linear topologies. Nonetheless, the field of the third-order nonlinear optical response (TONO) is still largely unexplored, although, theoretically, nonlinear CPs should give a higher TONO response. Therefore, linear CPs and a trigonal nonlinear CP were synthesized via a combination of a controlled chain-growth polymerization, post-polymerization reactions and a click reaction. Afterward, the TONO response of the CPs was investigated with the highly sensitive third-harmonic scattering technique using solvatochromism experiments. In contrast to what was expected, trigonal nonlinear CPs do not possess a higher TONO response compared to their linear counterparts. Highlights: Conjugated polymers. Third-order nonlinear optical response. Third harmonic scattering. Kumada catalyst transfer condensative polymerization. Nonlinear topologies.