Monodisperse "rodcoil" copolymers

Abstract

Block copolymers of rigid, rodlike blocks coupled to flexible, coillike blocks offer the opportunity to study new aspects of microphase separation behavior. We term these polymers "rodcoil" in order to emphasize the difference in flexibility between the component blocks. This flexibility difference enriches the thermodynamic description

“Sandglass”‐Shaped Self‐Assembly of Coil–rod–coil Triblock Copolymer Containing Rigid Aniline‐Pentamer

“…[15][16][17] However, in recent years, there has been a growing interest in block copolymers with rod-coil or coil-rod-coil structures, for which new morphologies and phase separation behaviors have been observed. [18][19][20][21] Researchers in this area have developed a lot of functional polymers with electronic, optical and magnetic properties, based on well-defined supramolecular architectures. The conjugated polymer, one kind of functional species due to their unique electrical and optical properties, has been incorporated into heterogeneous block copolymers to create a new class of self-assembling electroactive materials with classical lamella, cylindrical and spherical morphologies.…”

Helix–Coil Transition and Micellar Structure of Poly(ethylene glycol)-block-Poly[N5-(2-hydroxyethyl) L-glutamine] in Cyclohexanol/Water Mixed Solvents

“…This result suggests the decrease in the diameter of the cylindrical micelles with the increase of w. As described in Introduction, packing manner of rod-coil diblock copolymers has been discussed theoretically and experimentally. [11][12][13][16][17][18][19][20][21][22][23][24][25][26][27][28][29] Rod blocks were proposed to be packing with their long axis aligned, and this packing manner induces a flat interface between rod-and coil-segregated domains. On the other hand, in random-coil polymer, it should be possible to form a segregated domain with large curvature such as spherical micelle.…”

“…[11][12][13] Flory's lattice theory for rigid-rod molecules 14,15 shows that nematic ordering of the rod molecule is preferred in order to increase packing entropy in concentrated solution. Theoretical studies for association of rod-coil diblock copolymers also predicted that rod blocks are packed with its long axis aligned in associated domain.…”

Recent advance in syntheses and applications of well-defined end-functionalized polymers by means of anionic living polymerization

“…7). The resulting block copolymer exhibited solid state-segregation in domain on a nanometer scale [62]. Hempenius and his coworkers employed the polystyrene with phenolic terminus that was modified by an a -terthiophene unit, followed by a coupling reaction [63].…”