Liquid crystalline dispersions of double-stranded nucleic acids and their complexes as a background for nanodesign: Review

Yevdokimov, Yu. M.; Zakharov, M. A.; Salyanov, V. I.

doi:10.1134/s1063774506060137

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…The electron-donor ability of the OH group in phenols favors electrophilic attack on ortho- and para-positions . It is well-known that nitro group is an electron withdrawing group, which also preferentially affect the ortho and para position of a benzenic ring. , Thus, catechols and hydroquinone were identified as the primary degradation products (SI Figure S19). In the following degradation process, p -substituted catechols were transformed into catechol followed by the opening of aromatic ring, which were detected using GC-MS as presented in SI Figures S19.…”

Section: Resultsmentioning

confidence: 99%

Degradation of p-Nitrophenol on Biochars: Role of Persistent Free Radicals

Yang

Pan

et al. 2015

Environ. Sci. Technol.

323

138

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Generation of environmentally persistent free radicals (EPFRs) on solid particles has recently attracted increasing research interest. EPFRs potentially have high reactivity and toxicity. However, the impact of EPFRs on organic contaminant behavior is unclear. We hypothesized that EPFRs in biochars can degrade organic contaminants and play an important role in organic contaminant behavior. We observed obvious degradation of p-nitrophenol (PNP) in the presence of biochars, through the detection of NO3(-) as well as organic byproducts. The extent of PNP degradation was correlated to the intensity of EPR signals of biochar particles. tert-Butanol (a •OH scavenger) did not completely inhibit PNP degradation, indicating that •OH could not fully explain PNP degradation. The decreased PNP degradation after tert-butanol addition was better correlated with reduced PNP sorption on biochars. PNP degradation through the direct contact with EPFRs in biochar particles could be an important contribution to the PNP concentration reduction in the aqueous phase. The coating of natural organic matter analogue (tannic acid) on biochars did not considerably inhibit PNP degradation, suggesting the ability of biochars to degrade PNP in soil and natural water. Similar EPFR-promoted degradation was observed for five different types of biochars and one activated carbon, as well as one additional chemical (p-aminophenol). Therefore, organic chemical degradation by EPFRs in biochars can be a common process in the environment and should be incorporated in organic chemical fate and risk studies.

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Section: Resultsmentioning

confidence: 99%

Degradation of p-Nitrophenol on Biochars: Role of Persistent Free Radicals

Yang

Pan

et al. 2015

Environ. Sci. Technol.

323

138

View full text Add to dashboard Cite

show abstract

“…For example, plywood-like structures can also be acquired by asymmetrical elongated molecules in the form of liquid crystals in concentrated solutions [58] . For instance, polypeptides [59] , polysaccharides [60] , and DNA [61] are able to form liquid crystalline structures within their phase diagrams [62] . This self-assembly process can be tuned based on different factors including concentration [58] , temperature [63] , pH [64] , and ionic interactions [63] .…”

Section: Structurementioning

confidence: 99%

Hierarchical Biomineralization: from Nature's Designs to Synthetic Materials for Regenerative Medicine and Dentistry

Elsharkawy

Mata

2018

Adv Healthcare Materials

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Biomineralization is a highly dynamic, yet controlled, process that many living creatures employ to develop functional tissues such as tooth enamel, bone, and others. A major goal in materials science is to create bioinspired functional structures based on the precise organization of building blocks across multiple length scales. Therefore, learning how nature has evolved to use biomineralization could inspire new ways to design and develop synthetic hierarchical materials with enhanced functionality. Toward this goal, this review dissects the current understanding of structure-function relationships of dental enamel and bone using a materials science perspective and discusses a wide range of synthetic technologies that aim to recreate their hierarchical organization and functionality. Insights into how these strategies could be applied for regenerative medicine and dentistry are also provided.

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“…An attempt to form a NaC using the procedure based on the "enthalpy condensation" (as a result of DNA molecules interaction with polycation) was described in [36].…”

Section: All-at-once Designmentioning

confidence: 99%

Nanotechnology and Nucleic Acids

Yevdokimov¹,

Sytchev²

2007

TONANOJ

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Abstract:The peculiarities of two approaches in the nanodesign based on the double-stranded nucleic acid molecules are considered. Main attention is devoted to the formation and properties of nanoconstructions based on the double-stranded DNA molecules and the complexes with chitosan, fixed in the spatial structure of particles of their cholesteric liquidcrystalline dispersions, and cross-linked by artificial nanobridges consisting of alternating copper ions and daunomycin molecules. In contrast to initial DNA liquid-crystalline particles, the structure of resulting nanoconstruction is not "liquidcrystalline" any more; rather it is rigid, crystal-like, three-dimensional structure. The formed nanoconstructions possess the unique spatial and optical properties; this opens a gate for their application in biotechnology and medicine.

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Liquid crystalline dispersions of double-stranded nucleic acids and their complexes as a background for nanodesign: Review

Cited by 5 publications

References 25 publications

Degradation of p-Nitrophenol on Biochars: Role of Persistent Free Radicals

Degradation of p-Nitrophenol on Biochars: Role of Persistent Free Radicals

Hierarchical Biomineralization: from Nature's Designs to Synthetic Materials for Regenerative Medicine and Dentistry

Nanotechnology and Nucleic Acids

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