Versatile self-assembly of supramolecular block copolymers with ionic cluster junctions

Abstract

Clusto-supramolecular block copolymers are synthesized by using an anionic cluster [W 6 O 19 ] 2− as an ionic junction to link two cationic terminated polystyrene chains. These polymers exhibit versatile self-assembly behaviours not only dependent on the molecular weight but also adaptive to the concentration and temperature.This journal is a The PS chains were cleaved from CBCs by the basic hydrolysis with LiOH. 9c Polymer Chemistry CommunicationThis journal is

Inorganic‐Macroion‐Induced Formation of Bicontinuous Block Copolymer Nanocomposites with Enhanced Conductivity and Modulus

“…However, phase transitions induced by multi‐charged ions, particularly the formation of bicontinuous structures, have been rarely reported, although multi‐charged ions are preferable for achieving a strong electrostatic cohesion. Polyoxometalates (POMs) comprise a large class of molecularly well‐defined metal–oxide clusters, and have been widely used as versatile inorganic moieties to prepare hybrid polymer materials . Moreover, POMs are typical inorganic macroions owing to their very high negative charges from 2 to more than 40 and nanoscale dimensions with diameters from 0.5 to 6 nm.…”

“…[1,22,23] However,p hase transitions induced by multi-charged ions,p articularly the formation of bicontinuous structures,h ave been rarely reported, although multi-charged ions are preferable for achieving as trong electrostatic cohesion. [26][27][28][29][30][31][32][33][34][35][36][37][38] Moreover,POMs are typical inorganic macroions [39] owing to their very high negative charges from 2t o more than 40 and nanoscale dimensions with diameters from 0.5 to 6nm. [26][27][28][29][30][31][32][33][34][35][36][37][38] Moreover,POMs are typical inorganic macroions [39] owing to their very high negative charges from 2t o more than 40 and nanoscale dimensions with diameters from 0.5 to 6nm.…”

“…Polyoxometalates (POMs) comprise al arge class of molecularly well-defined metal-oxide clusters, [24,25] and have been widely used as versatile inorganic moieties to prepare hybrid polymer materials. [26][27][28][29][30][31][32][33][34][35][36][37][38] Moreover,POMs are typical inorganic macroions [39] owing to their very high negative charges from 2t o more than 40 and nanoscale dimensions with diameters from 0.5 to 6nm. Herein, we present af acile approach based on electrostatic control to access bicontinuous morphologies from lamellar poly(styrene-block-2-vinylpyridine) (PS-b-P2VP) in aP OM-induced process,w hich led to nanocomposites with enhanced conductivity and modulus (Scheme 1).…”

Multiscale Self-Assembly of Mobile-Ligand Molecular Nanoparticles for Hierarchical Nanocomposites

“…To systemically illustrate the influence of the mobile PS ligands on SiW assembly, a set of six SiW-4PS n with increasing length of the PS chains were synthesized, following our previously reported "graft from" method (SI Appendix, Figures S1−S3, and Tables S1 and S2). 35,36 Their n values are confirmed to be 8, 10, 24, 32, 42, and 59, as summarized in Table 1. The SiW-4PS n exhibit an interesting self-assembly behavior in the bulk, forming a series of ordered nanostructures which depend on the n values, as studied by a combinational characterization of small-angle X-ray scattering (SAXS) and bright-field transmission electron microscopy (TEM).…”

“…The PS and SiW moieties can be regarded as two thermodynamically incompatible blocks which are bonded together by electrostatic interactions, as reported in our previous works using POMs as the nanoscale inorganic blocks to synthesize hybrid block polymers. 36 On the other hand, the microphase separation process of SiW-4PS n is confined and influenced by the surrounding chains of PS matrix. In this situation, the anisotropic growth of lamellar or cylindrical SiW nanoarrays along their long axis is confined to certain length.…”