SYNTHESIS AND ORGANIZATION OF II–VI LOW DIMENSION NANOMATERIALS IN NONIONIC AMPHIPHILIC TRIBLOCK COPOLYMER SYSTEMS

A new synthetic route to prepare II–VI nanoscale materials, such as CdS nanorods and ZnSe nanoparticles is demonstrated and the advantage of using nonionic triblock copolymer systems,i.e., H (– OCH 2 CH 2)x[– OCH ( CH 3)– CH 2]y(– OCH 2 CH 2)y– OH , or ( EO )x( PO )y( EO )x as structure-directing agents in the synthesis of low dimension nanomaterials is introduced. The effect of (EO)/(PO) ratio in controlling the diameter and the morphology of the final product is addressed. The employ of F127 [( EO )106( PO )70( EO )106] as a surfactant-template to study the temperature-dependent size-selection of ZnSe nanoparticles is also presented. We observe that the larger ZnSe nanoparticles are arrested first by the hydrophilic fractions of triblock copolymers F127, while the smaller particles still remain their thermal motion in the aqueous phase.

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Thermodynamic-Dependent Size-Selection of ZnSe Nanoparticles in Amphiphilic Triblock Copolymer Systems

Journal of the Chinese Chemical Society ◽

10.1002/jccs.200400011 ◽

2004 ◽

Vol 51 (1) ◽

pp. 65-70 ◽

Cited By ~ 2

Author(s):

Chung-Sung Yang ◽

Kuo-Lung Ku

Keyword(s):

Triblock Copolymer ◽

Znse Nanoparticles ◽

Size Selection ◽

Amphiphilic Triblock Copolymer ◽

Selection Of

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Temperature-Dependent Properties of Water-in-Oil Microemulsions with Amphiphilic Triblock-Copolymer. Part I: Dynamics, Particle Interactions, and Network Formation

The Journal of Physical Chemistry B ◽

10.1021/jp991047d ◽

1999 ◽

Vol 103 (44) ◽

pp. 9432-9441 ◽

Cited By ~ 10

Author(s):

Holger Mays ◽

Mats Almgren

Keyword(s):

Triblock Copolymer ◽

Network Formation ◽

Particle Interactions ◽

Temperature Dependent ◽

Amphiphilic Triblock Copolymer ◽

Temperature Dependent Properties

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Growth of CdS Nanorods in Nonionic Amphiphilic Triblock Copolymer Systems

Chemistry of Materials ◽

10.1021/cm011227b ◽

2002 ◽

Vol 14 (3) ◽

pp. 1277-1284 ◽

Cited By ~ 69

Author(s):

Chung-Sung Yang ◽

David D. Awschalom ◽

Galen D. Stucky

Keyword(s):

Triblock Copolymer ◽

Cds Nanorods ◽

Amphiphilic Triblock Copolymer

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Constructing semi-fluorinated PDEAEMA-b-PBTFVBP-b-PDEAEMA amphiphilic triblock copolymer via successive thermal step-growth cycloaddition polymerization and ATRP

Polymer Chemistry ◽

10.1039/c5py01404b ◽

2015 ◽

Vol 6 (45) ◽

pp. 7881-7892 ◽

Cited By ~ 7

Author(s):

Chun Feng ◽

Chao Zhu ◽

Wenqiang Yao ◽

Guolin Lu ◽

Yongjun Li ◽

...

Keyword(s):

Triblock Copolymer ◽

Triblock Copolymers ◽

Amphiphilic Triblock Copolymer ◽

Step Growth ◽

Transformation Strategy

Amphiphilic triblock copolymers containing semi-fluorinated PBTFVBP and hydrophilic PDEAEMA segments were synthesized by the site transformation strategy.

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Putative transmembrane transporter modulates higher-level aggression in Drosophila

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1618354114 ◽

2017 ◽

Vol 114 (9) ◽

pp. 2373-2378 ◽

Cited By ~ 3

Author(s):

Budhaditya Chowdhury ◽

Yick-Bun Chan ◽

Edward A. Kravitz

Keyword(s):

Causal Effect ◽

Nerve Terminals ◽

Rna Seq ◽

Wild Type ◽

Temperature Dependent ◽

Number Of Genes ◽

Interesting Family ◽

Solute Carrier ◽

Transmembrane Transporter ◽

Selection Of

By selection of winners of dyadic fights for 35 generations, we have generated a hyperaggressive Bully line of flies that almost always win fights against the parental wild-type Canton-S stock. Maintenance of the Bully phenotype is temperature dependent during development, with the phenotype lost when flies are reared at 19 °C. No similar effect is seen with the parent line. This difference allowed us to carry out RNA-seq experiments and identify a limited number of genes that are differentially expressed by twofold or greater in the Bullies; one of these was a putative transmembrane transporter, CG13646, which showed consistent and reproducible twofold down-regulation in Bullies. We examined the causal effect of this gene on the phenotype with a mutant line for CG13646, and with an RNAi approach. In all cases, reduction in expression of CG13646 by approximately half led to a hyperaggressive phenotype partially resembling that seen in the Bully flies. This gene is a member of a very interesting family of solute carrier proteins (SLCs), some of which have been suggested as being involved in glutamine/glutamate and GABA cycles of metabolism in excitatory and inhibitory nerve terminals in mammalian systems.

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Dissipative Particle Dynamics Study on Interfacial Properties of Symmetric Ternary Polymeric Blends

Polymers ◽

10.3390/polym13091516 ◽

2021 ◽

Vol 13 (9) ◽

pp. 1516

Author(s):

Dongmei Liu ◽

Kai Gong ◽

Ye Lin ◽

Tao Liu ◽

Yu Liu ◽

...

Keyword(s):

Interfacial Tension ◽

Chain Length ◽

Triblock Copolymer ◽

Diblock Copolymers ◽

Triblock Copolymers ◽

Dissipative Particle Dynamics ◽

Interfacial Properties ◽

Particle Dynamics ◽

Polymeric Blends ◽

Polymer Component

We investigated the interfacial properties of symmetric ternary An/AmBm/Bn and An/Am/2BmAm/2/Bn polymeric blends by means of dissipative particle dynamics (DPD) simulations. We systematically analyzed the effects of composition, chain length, and concentration of the copolymers on the interfacial tensions, interfacial widths, and the structures of each polymer component in the blends. Our simulations show that: (i) the efficiency of the copolymers in reducing the interfacial tension is highly dependent on their compositions. The triblock copolymers are more effective in reducing the interfacial tension compared to that of the diblock copolymers at the same chain length and concentration; (ii) the interfacial tension of the blends increases with increases in the triblock copolymer chain length, which indicates that the triblock copolymers with a shorter chain length exhibit a better performance as the compatibilizers compared to that of their counterparts with longer chain lengths; and (iii) elevating the triblock copolymer concentration can promote copolymer enrichment at the center of the interface, which enlarges the width of the phase interfaces and reduces the interfacial tension. These findings illustrate the correlations between the efficiency of copolymer compatibilizers and their detailed molecular parameters.

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