A one-pot synthesis of oleic acid end-capped temperature- and pH-sensitive amphiphilic polymers

Liu, Xueming; Wang, Lishan

doi:10.1016/j.biomaterials.2003.08.023

Cited by 43 publications

(28 citation statements)

References 26 publications

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“…D Stimuli-responsive block copolymers are an interesting class of block copolymers because their physical and chemical properties can be adjusted by external stimuli. For example, hydrophilic or hydrophobic properties can be induced by the variation of pH or temperature [20], [21]. This type of reversible change has far-reaching consequences on aggregation, phase behavior, and solubility, leading to widespread applications in drug delivery systems [22], in devices as actuators [23], artificial muscles, and controlled molecular gates and switches [24] Studies conducted on the stimuli-responsive drug-release behavior of block copolymers have demonstrated their possible applications [25], [26].…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Stimuli-Responsive Water-Soluble [60]Fullerene End-Capped Ampholytic Block Copolymer

et al. 2005

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Section: Introductionmentioning

confidence: 99%

Self-Assembly of Stimuli-Responsive Water-Soluble [60]Fullerene End-Capped Ampholytic Block Copolymer

et al. 2005

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“…Unfortunately, this characteristic cannot be discussed in this context because of the insolubility of oleic acid in water. Anyway, the very weak acidity of oleic acid 15 suggests that no considerable pH dependence of protonation of the carboxyl moiety can be estimated in the physiological environment.…”

Section: Resultsmentioning

confidence: 99%

Competitive hydrogen bonds associated with the effect of primycin antibiotic on oleic acid as a building block of plasma membranes

2010

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Interaction of primycin antibiotic with oleic acid was investigated to understand the effect of primycin on lipid membranes at a molecular level. The thermodynamic parameters of the complex formation were determined by photoluminescence studies. Results highlight the presence of two interactions between the interacted species according to the cases in which one or two hydrogen bonds stabilize the molecular complexes. Although both interactions result in similar Gibbs-free enthalpy change at room temperature, the enthalpy and entropy changes associated with the formation of single or double hydrogen bonds are quite different. Quantum chemical and anisotropy decay studies validated that the formation of a single or double hydrogen bond between these species is driven by entropy in the former or enthalpy in the latter case. Owing to the resultant quite different temperature dependence of these two interactions, after detailed examinations in a cellular environment, this property could have importance in application of primycin on differently fevered bodies.

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“…[8] pH sensitive polymers can respond to a change in an aqueous environment through shrinking or swelling and include materials such as hydrogels. [9,12] Chromogenic systems can visually adapt to a wide variety of stimulants including heat, optics, and voltage depending on the particular application. [13] One common theme for these materials is their ability to significantly change in response to external stimulation and in specific cases also to alter their environment in return.…”

Section: Introductionmentioning

confidence: 99%

Using Lessons from Cellular and Molecular Structures for Future Materials

LeDuc

Robinson

2007

Advanced Materials

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Cells and molecules exhibit robust and efficient characteristics that occur as a result of highly organized and hierarchical structures within these small scale living systems. These structures have the ability to adapt themselves to a wide variety of stimuli, including mechanical and chemical environmental changes, which ultimately affect behavior including cell life and death. The characteristics of these structures can be utilized as they provide unique advantages for building a future generation of material science technologies. In this article, we provide an overview of the similarities between materials and living cells, and discuss specific types of biological materials including cytoskeletal elements, DNA, and molecular motors that have already been leveraged to build unique functional materials. The future challenge will be to continue to use the scientific discoveries of today with upcoming discoveries in cellular and molecular science, and apply these principles to develop as yet unknown technologies and materials.

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A one-pot synthesis of oleic acid end-capped temperature- and pH-sensitive amphiphilic polymers

Cited by 43 publications

References 26 publications

Self-Assembly of Stimuli-Responsive Water-Soluble [60]Fullerene End-Capped Ampholytic Block Copolymer

Self-Assembly of Stimuli-Responsive Water-Soluble [60]Fullerene End-Capped Ampholytic Block Copolymer

Competitive hydrogen bonds associated with the effect of primycin antibiotic on oleic acid as a building block of plasma membranes

Using Lessons from Cellular and Molecular Structures for Future Materials

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