Synthesis and characterization of novel biocompatible four-arm star-shaped copolymers by using a new tetramethacrylate core

Heidarpour, Ramin; Alimohammadi, Somayeh; Salehi, Roya; Hemmati, Salar; Taghvaei-Ganjali, Saeed

doi:10.1007/s12221-014-0465-8

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…Considerable interest has been focused on the synthesis of star‐shaped polymers because of their particular solid‐state and solution properties . They have well‐defined structures (smaller hydrodynamic volume, lower solution, and melt viscosities) compared with those of their counterparts with the same molecular weight and composition …”

Section: Introductionmentioning

confidence: 99%

“…12 They have well-defined structures (smaller hydrodynamic volume, lower solution, and melt viscosities) compared with those of their counterparts with the same molecular weight and composition. [13][14][15][16] In this study, we used the advantages of star-shaped polymers and synthesized a miktoarm star-shaped copolymer by means of ringopening polymerization (ROP) and click reaction techniques that has two energetic arms and two inert arms. This copolymer, on one side, solves the PGN binder problem (high glass-transition temperature) and, on the other hand, resolves the PCL problem (lack of energy).…”

Section: Introductionmentioning

confidence: 99%

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Designing of energetic miktoarm A₂B₂ star‐shaped polymer by means of click chemistry and ROP techniques

Bodaghi

2019

Polymers for Advanced Techs

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Novel A2B2‐type energetic miktoarm star‐shaped copolymers composed of two PGN arms and two PCL arms was synthesized by the combination of ring‐opening polymerization (ROP) and “click” chemistry. Initially, diazido end‐functionalized two‐arm PGN, (PGN)2‐(N3)2, was synthesized by ROP of glycidyl nitrate monomers. Subsequently, (PGN)2‐(PCL)2 was obtained from the click reaction between diazido end‐functionalized (PGN)2‐(N3)2 polymers and propargyl‐terminated poly(ε‐caprolactone) (PTPCL). This star copolymer solves problems of PCL (lake of energy) and PGN (low Tg). The Fourier‐transform infrared (FT‐IR), 1H nuclear magnetic resonance (NMR), and gel permeation chromatography (GPC) studies revealed that (PGN)2‐(PCL)2 was successfully obtained. The thermal behavior of star polymer was investigated by thermogravimetric analysis (TGA) and derivative thermogravimetry. The results show that (PGN)2‐(PCL)2 decomposed at two stages. The first stage is seen at 212.6°C which related to degradation of –ONO2 group and second stage attributed to degradation of PCL group which is seen at 346.1°C.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Designing of energetic miktoarm A₂B₂ star‐shaped polymer by means of click chemistry and ROP techniques

Bodaghi

2019

Polymers for Advanced Techs

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“…Star‐shaped polymers consist of at least three or more linear polymeric chain (arm) connected to one point or to a central core. They have attracted considerable attention due to their well‐defined structures (smaller hydrodynamic volume, lower solution, and melt viscosities) compared to those of their counterparts with the same molecular weight and composition . Star‐shaped polymers can be classified into two categories based on the chemical compositions of the arm species, being a homoarm (regular) star‐shaped polymer or a miktoarm (heteroarm) star‐shaped polymer .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Miktoarm Star‐Shaped Polymers with POSS Core via a Combination of CuAAC Click Chemistry, ATRP, and ROP Techniques

Doğancı

Taşdelen

Yılmaz

2015

Macro Chemistry & Physics

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Well‐defined AB‐type miktoarm star‐shaped polymers with a polyhedral oligomeric silsesquioxane (POSS) core are prepared by combination of the “core‐first” and “arm‐first” approaches using ring‐opening polymerization (ROP) and copper‐catalyzed azide–alkyne cycloaddition (CuAAC) click reactions. The clickable octakis‐azido‐hydroxyl‐POSS as the core molecule and alkyne end‐functionalized precursor polymers (methoxypoly(ethylene glycol), poly(methyl methacrylate) (PMMA), and polystyrene) are synthesized independently according to the well‐known procedures including ring‐opening reaction of octaglycidyldimethylsilyl POSS using sodium azide, etherification of poly(ethylene glycol) (PEG) monomethyl ether using propargyl bromide and sequential atom transfer radical polymerization of methyl methacrylate or styrene and following nucleophilic substitution reactions of the these polymers with sodium azide. In subsequent step, octa‐armed poly(ε‐caprolactone) star‐shaped polymer ((PCL)8‐POSS‐(N3)8) containing azido functionalities in the core is synthesized via “core‐first” approach through ROP of ε‐caprolactone (ε‐CL). Finally, alkyne end‐functionalized polymers are introduced to the (PCL)8‐POSS‐(N3)8 via “arm‐first” approach using the CuAAC click reaction under ambient conditions, yielding AB‐type miktoarm star‐shaped polymers. Based on 1H NMR spectroscopy calculations, the number of PEG, PMMA, and PSt arms in (PCL)8‐POSS‐(mPEG)7, (PCL)8‐POSS‐(PMMA)5, and (PCL)8‐POSS‐(PSt)6 star‐shaped polymers is found as 7.1, 4.9, and 5.9, respectively.

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Star-hyperbranched waterborne polyurethane based on D-glucose-poly(ε-caprolactone) core as a biomaterial candidate

Farajollah

Nikje

Saadat³

et al. 2021

European Polymer Journal

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Synthesis and characterization of novel biocompatible four-arm star-shaped copolymers by using a new tetramethacrylate core

Cited by 5 publications

References 24 publications

Designing of energetic miktoarm A₂B₂ star‐shaped polymer by means of click chemistry and ROP techniques

Designing of energetic miktoarm A₂B₂ star‐shaped polymer by means of click chemistry and ROP techniques

Synthesis of Miktoarm Star‐Shaped Polymers with POSS Core via a Combination of CuAAC Click Chemistry, ATRP, and ROP Techniques

Star-hyperbranched waterborne polyurethane based on D-glucose-poly(ε-caprolactone) core as a biomaterial candidate

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Synthesis and characterization of novel biocompatible four-arm star-shaped copolymers by using a new tetramethacrylate core

Cited by 5 publications

References 24 publications

Designing of energetic miktoarm A2B2 star‐shaped polymer by means of click chemistry and ROP techniques

Designing of energetic miktoarm A2B2 star‐shaped polymer by means of click chemistry and ROP techniques

Synthesis of Miktoarm Star‐Shaped Polymers with POSS Core via a Combination of CuAAC Click Chemistry, ATRP, and ROP Techniques

Star-hyperbranched waterborne polyurethane based on D-glucose-poly(ε-caprolactone) core as a biomaterial candidate

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Designing of energetic miktoarm A₂B₂ star‐shaped polymer by means of click chemistry and ROP techniques

Designing of energetic miktoarm A₂B₂ star‐shaped polymer by means of click chemistry and ROP techniques