One-pot synthesis of POSS-containing alternating copolymers by RAFT polymerization and their microphase-separated nanostructures

Zhang, Zhenghe; Hong, Lizhi; Gao, Yun

doi:10.1039/c4py00302k

Cited by 37 publications

(27 citation statements)

References 78 publications

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“…A wide variety of maleimides can be copolymerized with styrene to yield alternating copolymers, but also many styrene derivatives have been used. RAFT copolymerizations for such systems have been described (31)(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42)(43), among others for the synthesis of polyampholytes, thermo-and photoresponsive polymers and graft-copolymers. Examples of the maleimides and styrene derivatives that were used are displayed in Figure 1B and C, respectively.…”

Section: Control Over Alternating Copolymerization Using Raftmentioning

confidence: 99%

Simultaneous Control over Monomer Sequence and Molecular Weight Using the RAFT Process

Brummelhuis

Weck

2015

ACS Symposium Series

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A simultaneous control over molecular weight and monomer sequence is highly desirable since they strongly influence the properties of polymers.The reversible additionfragmentation chain-transfer (RAFT) process is ideally suited to provide control over molecular weight for a wide range of copolymerizations because of the tolerance of the RAFT process towards functional groups and reaction conditions. Here we highlight that RAFT can be used to prepare polymers with well-defined alternating or periodic monomer sequences and controlled, narrowly distributed, molecular weight.

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Section: Control Over Alternating Copolymerization Using Raftmentioning

confidence: 99%

Simultaneous Control over Monomer Sequence and Molecular Weight Using the RAFT Process

Brummelhuis

Weck

2015

ACS Symposium Series

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“…Zhang et al also reported lack of phase-separated structure at higher POSS content in the poly(styrene-alt-maleimide isobutyl POSS)-block-polystyrene block copolymer. 45 Nevertheless, this study inspired us to analyze crystalline morphology in details, vide infra.…”

Section: Thermal Behavior Of Hybrid Block Copolymersmentioning

confidence: 99%

Polyisobutylene containing organic/inorganic hybrid block copolymers and their crystalline behavior

Haldar

Bauri

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

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Block copolymer comprising of polyisobutylene (PIB) soft segment and poly(3‐(3,5,7,9,11,13,15‐heptaisobutyl‐pentacyclo[9.5.1.13,9.15,15.17,13]‐octasiloxane‐1‐yl)propyl methacrylate) (PMAPOSS) hard segment was synthesized by combination of living carbocationic and reversible addition‐fragmentation chain transfer (RAFT) polymerizations. Block copolymers were characterized by 1H and 29Si NMR spectroscopy, FT‐IR study, energy dispersive X‐ray spectroscopy (EDX), and gel permeation chromatography (GPC). The EDX, combined with scanning electron microscopy (SEM) was employed for determination of elemental composition. Thermal transition and degradation behaviors were confirmed by differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA), respectively. Although both the PIB and MAPOSS homopolymers are amorphous in nature, in their block copolymers the PMAPOSS domain showed crystalline behavior, as confirmed from wide‐angle X‐ray scattering (WAXS) technique, DSC studies and polarized optical microscopy (POM). Interestingly, crystalline melting temperatures (Tm) can be tuned by changing the PIB to PMAPOSS block length ratios. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 1125–1133

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“…[8] All these strategies above could have prevented the AIQ of photosensitizers to ac ertain degree,a nd improved the singlet oxygen quantum yield. [12] Fore xample,P OSS has been introduced in fluorescence materials and optical materials to improve the photophysical properties,taking advantage of the steric hindrance from its unique structure. [9] Polyhedral oligomeric silsesquioxane (POSS) is ac ageshaped Si 8 O 12 -based nanoparticle, [10] which has been widely incorporated into polymer matrices to prepare hybrid polymers with enhanced properties,i ncluding oxidation resistance,m echanical strength and thermal stability.…”

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Enhancing the Efficacy of Photodynamic Therapy through a Porphyrin/POSS Alternating Copolymer

et al. 2018

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One-pot synthesis of POSS-containing alternating copolymers by RAFT polymerization and their microphase-separated nanostructures

Cited by 37 publications

References 78 publications

Simultaneous Control over Monomer Sequence and Molecular Weight Using the RAFT Process

Simultaneous Control over Monomer Sequence and Molecular Weight Using the RAFT Process

Polyisobutylene containing organic/inorganic hybrid block copolymers and their crystalline behavior

Enhancing the Efficacy of Photodynamic Therapy through a Porphyrin/POSS Alternating Copolymer

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