Chirality in conjugated polymers: when two components meet

Abstract

Chirality is a well-studied feature in the auspicious class of conjugated polymers. Proper use allows to study and to control the behavior of the polymers which make them very valuable in many applications. Mostly chiral homopolymers are considered, but what happens when the chirality originates from the interplay between multiple components? This review summarizes different approaches for multicomponent chirality in conjugated polymers and properties of them. 55 Interestingly, chirality can also be incorporated in multicomponent systems, in which one or more components are chiral. The presence of different component(s) can influence the macro-and supramolecular structure, giving rise to unprecedented chiral behavior. In this review chiral conjugated 60 polymers in 'multicomponent systems' will be discussed. More in particular, we will deal with conjugated random copolymers, conjugated block copolymers and (achiral) conjugated polymers in the presence of chiral additive or media. Michiel Verswyvel Michiel Verswyvel is a 3 rd year PhDstudent, fellow of FWO-Vlaanderen, affiliated with the Laboratory of Polymer Synthesis at the University of Leuven in Belgium. At the same university, he received his Bachelor (2007) and Master (2009) degree. His research interests include the synthesis and characterization of conjugated block polymers. Guy Koeckelberghs Guy Koeckelberghs is assistant professor at the KU Leuven. He received his PhD in 2002 at KU Leuven on the synthesis of chiral polymers for nonlinear optical applications in the group of Prof. C. Samyn. His research interests are the synthesis and chiroptical properties of allconjugated block copolymers and the magnetic and nonlinear optical properties of conjugated polymers.

Molecular Semiconductors for Logic Operations: Dead‐End or Bright Future?

“…Although chirality is textbook concept in synthetic chemistry, few chiral organic semiconductors have been reported so far, in contrast of chiral conjugated polymers and chiral organic conductors that have received more attention . There are essentially two types of molecular structures, either the π‐systems are chiral and depart from planarity or chiral side‐groups are attached to a flat conjugated core .…”

Outstanding Chiroptical Features of Thin Films of Chiral Oligothiophenes

“…Chirality in organic optoelectronic devices is a topic that is rapidly gaining interest. [1][2][3] There is at least a two-fold interest: in the first place it can constitute a means to drive and control the supramolecular order of p-conjugated molecules constituting the active layers of the devices, [4][5] and secondly it opens the way to highly specialized applications, such as producing (CP-OLED), [6][7][8] or detecting (CP-OFET) [9][10][11][12] circularly polarized (CP) light or specifically responding to analyte enantiomers in analytical sensors. [13][14] Moreover, molecular chirality is a unique way to manipulate electron spins and to construct spin filters.…”

Recent developments in the synthesis of regioregular thiophene-based conjugated polymers for electronic and optoelectronic applications using nickel and palladium-based catalytic systems

“…Polythiophenes substituted with chiral side chains p-Conjugated polymers substituted with chiral side chains represent a special class of optically active polymers that has attracted much attention in view of their possible applications as enatio-selective membranes and electrodes, suitable for chiral sensing as well as electrochemical asymmetric synthesis. [129][130][131] Side chain chirality imparts helical order in solid state and in aggregates. Moreover, chiral side chains have great ability to self-assemble into novel nanostructures.…”