Rearrangement Strategy for the Preparation of Polymers With π-Conjugated Structures

Abstract

π-Conjugated polymers are usually prepared by polymerization only. In this perspective article, typical synthesis methods of conjugated polymers are briefly summarized, and a novel strategy for preparing conjugated polymers by rearrangement is proposed. During the metalation process, many conjugated structures were generated in polybutadiene by double bond migration. The effects of reaction time, temperature, and catalyst dosage on the product structure were investigated. Moreover, the structure of the products was confirmed by FTIR, 1H NMR, and 2D HSQC NMR spectra. Thus, a possible reaction mechanism was proposed, in which polybutadiene generates allylic carbanions in the presence of n-butyllithium, and then the double bonds migrate through the carbanions rearrangement to generate many conjugated structures in the backbone chain. The method shows promise in facile and low-cost synthesis of conjugated polymers without the need for precious metal catalysts.

Nanotechnology for brain tumor imaging and therapy based on π-conjugated materials: state-of-the-art advances and prospects

“…In nanomedicine delivery systems, π-conjugated materials can also enable light-triggered drug release through their optical properties (Xu et al, 2015;Tang et al, 2021). By utilizing the absorption characteristics of π-conjugated materials, drug-loaded nanoparticles can be selectively stimulated to release drugs in specific tumor areas upon exposure to light.…”

Exploring Electrical Conductivity of Thiolated Micro‐ and Nanoparticles of Gallium

“…A conjugated molecule is considered as a factor that can induce the electron flow to create conduction pathways. [ 27 ] Therefore, we explored three organic thiol molecules and a reference molecule allyl sulfide with and without conjugation. We compared the conductivity of mixes to gain insight regarding the interfacial properties.…”