Chain-growth click copolymerization for the synthesis of branched copolymers with tunable branching densities

Abstract

In this work, we reported a facile synthesis of (hyper)branched copolymers with tunable degree of branching (DB) via one-pot chain-growth copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions. By using a tri-azido core...

Amphiphilic Polymers for Color Dispersion: Toward Stable and Low-Viscosity Inkjet Ink

“…1 Examples of these block copolymers include diblock, 2 triblock, 3 star-shaped, 4 and hyperbranched polymers. 5,6 Polymers possessing both hydrophilic and hydrophilic segments, called amphiphilic polymers, can form a wide range of selforganized architectures, such as micelle and vesicle, via specific molecular interactions (ionic and hydrophobic attractive force). The self-organizing behaviors of amphiphilic polymers have attracted considerable attention in polymer chemistry, 7,8 supramolecular chemistry, 9−11 and biochemistry.…”

“…Block copolymers with several functional segments and different compositions have been studied intensively as basic components for construction of high-performance materials . Examples of these block copolymers include diblock, triblock, star-shaped, and hyperbranched polymers. , Polymers possessing both hydrophilic and hydrophilic segments, called amphiphilic polymers, can form a wide range of self-organized architectures, such as micelle and vesicle, via specific molecular interactions (ionic and hydrophobic attractive force). The self-organizing behaviors of amphiphilic polymers have attracted considerable attention in polymer chemistry, , supramolecular chemistry, − and biochemistry. − Moreover, the application of amphiphilic polymers in the industry has recently become an important subject.…”

Synthesis and visualization of bottlebrush-shaped segmented hyperbranched polymers

“…[1][2][3] This sparsely branched structure could allow SHBPs to be functionalized not only on the periphery but also in theinterior. To date, three main techniques have been developed to synthesize SHBPs by one-pot polymerization, including (1) step-growth polymerization of AB n (n ≥ 2) macromonomers, [4][5][6][7][8][9][10][11] (2) copolymerization of A 2 macromonomers with B 3 [12][13][14][15][16] and (3) the simultaneous chain-and step-growth self-condensing vinyl polymerization (SCVP) of inimers ( polymerizable initiators) with monovinyl monomers. [17][18][19][20][21][22] Although the macromonomer strategies can offer precise control over linear segments for SHBPs, the synthesis of telechelic macromonomers is tedious and gelation remains an unavoidable problem in the copolymerization of A 2 macromonomers with B 3 strategy.…”

Investigation of the Multimer Cyclization Effect during Click Step-Growth Polymerization of AB-Type Macromonomers

“…In addition, when the monomer structure is composed of a small number of repeating units (N, 1 ≤ N ≤ ∼10), endowing small molecular size, the strategy is often called the small monomer strategy (Scheme 1a); on the contrary, when ∼10 < N, the strategy is often called the macromonomer strategy (Scheme 1a). For the macromonomer strategy, distinguished characteristics can be generally given to the products due to the size effect, such as a higher molar mass, 11,12 lower branching density, 13,14 and richer spatial distribution of a comonomer unit. 15,16 In recent years, much attention has been paid to the macromonomer step-growth polymerization, 11−22 but quantitative analysis and discussion regarding the cyclization side reaction are rarely involved in related work.…”

“…In recent years, much attention has been paid to the macromonomer step-growth polymerization, − but quantitative analysis and discussion regarding the cyclization side reaction are rarely involved in related work. In a typical step-growth polymerization process, the interchain coupling of macromonomers results in the formation of multimer products (dimer, trimer ... m -mer); meanwhile, the macromonomer precursor and multimer products may further undergo intrachain cyclization, producing cyclic topoisomers (Scheme b).…”