Solvent-Induced Large Compound Vesicle of [60]Fullerene Containing Poly(<i>tert</i>-butyl methacrylate)

Tan, Chung How; Ravi, Palaniswamy; Dai, Sheng; Tam, Kam Chiu; Gan, L. H.

doi:10.1021/la049747j

Cited by 31 publications

(44 citation statements)

References 24 publications

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“…The development of aggregates with different morphologies and its aggregation mechanism in solution using well-defined polymeric system are of potential interest to the research community. The self-assembly of polymer-branched C60 have been reported in organic or aqueous solvents [5][6][7][8]. However, there are few reports describing the influence of polymer addition on the self-assembling behavior of fullerene in organic sol-vents [9,10].…”

Section: Introductionmentioning

confidence: 99%

The Assembly of C60 in Semicrystalline PLLA Matrix

Chen

Pang

2012

Nano-Micro Lett.

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It has increasingly become a research focus to build higher structure composed of C60. However, there has been very few reports on the influence of polymer addition on the self-assembling behavior of fullerene in organic solvents. In this research, big needle-like C60 assemblings have been obtained in the form of PLLA/C60 composites. The largest C60 needles can be observed by naked eyes. The amount of C60 in the composite influences the length of C60 needles to some extent. DSC results indicate C60 accelerates the crystallization and lift the relative crystallinity of PLLA matrix. the results also imply the addition of semicrystalline PLLA influence the assembling behavior of C60. i.e., the crystallization of PLLA accelerated by C60 also act a driving force for the enriching and the linear assembling of C60 in PLLA matrix via Van der Waals force.

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Section: Introductionmentioning

confidence: 99%

The Assembly of C60 in Semicrystalline PLLA Matrix

Chen

Pang

2012

Nano-Micro Lett.

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“…For examples, C 60 hybrids having two polymer arms, C 60 -(PS) 2 , C 60 -(PVP) 2 , and C 60 -(PS-PVP) 2 , formed stable micelles in dilute THF solutions . C 60 -poly( tert -butyl methacrylate) and C 60 -poly(methyl methacrylate) formed self-induced large compound vesicle in mixed solvents composing a good solvent for both C 60 and polymeric arms and a poor solvent for C 60 . , Another example is micelles from double-C 60 -capped triblock copolymer . C 60 moieties act as a “block” unit in the C 60 -polymer hybrid.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Toroid Formation of Multiblock Polystyrene/C₆₀ Nanohybrids

Peng

Liu

2011

Macromolecules

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Multiblock polystyrene/C 60 nanohybrid block copolymers have been prepared with sequential atom transfer radical polymerization using 1-bromoethylbenzene and dimethyl-2,6-dibromoheptanediaote as monofunctional and difunctional initiators, respectively. The polystyrene/C 60 nanohybrids have been characterized with gel permeation chromatography and UVÀvis spectrometry. The self-assembly behaviors of the polystyrene/C 60 nanohybrids have been studied. The multiblock polystyrene/C 60 nanohybrids tend to form toroids in chloroform and to form spherical aggregates in the mixture of chloroform and methanol. Moreover, selective polystyrene/C 60 nanohybrids also form toroids in cyclohexane. The toroids shapes and formation mechanism in cyclohexane are different from those in chloroform. The polystyrene/C 60 nanohybrids are a new group of materials for toroids preparation and application. ' INTRODUCTIONCreation and control of the curvature and topology is important and interesting for the preparation of novel and functional soft materials. In contrast to the low-molecular-weight surfactants, macromolecular amphiphiles received much research attention of morphological assemblies. 1 The chain structures of the amphiphilic polymers play an important role in their self-assembly behaviors. 2 As a result, triblock copolymers, compared to diblock copolymers, are expected to demonstrate assembled aggregates having novel morphologies and properties. Some theoretical and simulated studies revealed the formation of ring-shaped aggregates in wormlike micellar systems 3À5 and opened the window to the scope of toroidal structures from amphiphilic block copolymers. Nevertheless, the theoretical prediction told that the presence of toroidal structures might be very difficult as their regime of formation was very narrow. 5 Jiang's group found that increases in the annealing time help the transformation of the amphiphilic polystyrene (PS)/poly(4-vinylpyridine) (PVP) ABA triblock copolymer from a rodshaped structure to a ring-shaped structure in a dioxane/water mixture solution. 6 The effect of shear flow rate on the formation of ring-shaped micelles of the same triblock copolymer was also examined. 7 Formation of the ring-shaped micelles at different flow rates performed via different pathways. Wang and Jiang further demonstrated the temperature-induced reversible transformation between toroidal and cylindrical micelles of the polystyrene poly(4-vinylpyridine) triblock copolymer. 8 Pochan and co-workers 9 reported the toroidal micelles of poly(acrylic acid-b-methyl acrylate-b-styrene) by mimicking the self-assembly behavior of DNA induced by multivalent counterions. Dilute polymer solutions and slow evaporation of tetrahydrofuran in the aqueous solutions are essential for eventual toroid formation. The research group also studied the effect of block copolymer compositions and sequence on the formation of toroidal morphology of triblock copolymers. 10 Formation of toroids could be only observed with specific copolymers. A successive paper re...

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“…The development and advancement of the ATRP process have provided an attractive and efficient method to prepare well‐defined C 60 ‐polymer derivatives because the chlorine‐ or bromine‐terminated polymer chains can be added to C 60 through the atom transfer radical addition (ATRA) reaction 36, 37, 40, 86–89. Utilization of ATRA to synthesize C 60 ‐polymer derivatives was first developed by Stalmach et al90 In their study, well‐defined rod‐coil block copolymers containing a rigid poly( p ‐phenylenevinylene) (PPV) block and a flexible statistical block of PS‐stat‐poly(4‐chloromethylstyrene) (PCMS) was first prepared by nitroxide‐mediated “living” radical polymerization, and then C 60 was subsequently incorporated to this block copolymer at the chloromethyl group on PCMS segment via ATRA (Scheme ).…”

Section: Synthetic Approaches For Producing C60‐containing Polymersmentioning

confidence: 99%

Stimuli‐Responsive Water‐Soluble Fullerene (C₆₀) Polymeric Systems

Yao

Tam

2011

Macromol. Rapid Commun.

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This review documents the advances in stimuli-responsive water-soluble fullerene (C(60)) polymeric systems. Stimuli-responsive polymers, when grafted onto C(60) impart "smart" and "responsive" characteristics, and these novel materials adopt various morphologies when subjected to external stimuli, such as pH, temperature, and salt. Various synthetic approaches for producing C(60)-polymers are outlined and discussed. The responsive behavior, water solubility, and self-assembly characteristics of these C(60)-polymers make them attractive for applications such as drug delivery, temperature sensors, and personal care.

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Solvent-Induced Large Compound Vesicle of [60]Fullerene Containing Poly(tert-butyl methacrylate)

Cited by 31 publications

References 24 publications

The Assembly of C60 in Semicrystalline PLLA Matrix

The Assembly of C60 in Semicrystalline PLLA Matrix

Preparation and Toroid Formation of Multiblock Polystyrene/C₆₀ Nanohybrids

Stimuli‐Responsive Water‐Soluble Fullerene (C₆₀) Polymeric Systems

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Solvent-Induced Large Compound Vesicle of [60]Fullerene Containing Poly(tert-butyl methacrylate)

Cited by 31 publications

References 24 publications

The Assembly of C60 in Semicrystalline PLLA Matrix

The Assembly of C60 in Semicrystalline PLLA Matrix

Preparation and Toroid Formation of Multiblock Polystyrene/C60 Nanohybrids

Stimuli‐Responsive Water‐Soluble Fullerene (C60) Polymeric Systems

Contact Info

Product

Resources

About

Preparation and Toroid Formation of Multiblock Polystyrene/C₆₀ Nanohybrids

Stimuli‐Responsive Water‐Soluble Fullerene (C₆₀) Polymeric Systems