Optical, electro-optic and optoelectronic properties of natural and chemically modified DNAs

Kwon, Young Wan; Choi, Dong Hoon; Jin, Jung Il

doi:10.1038/pj.2012.165

Cited by 43 publications

(26 citation statements)

References 69 publications

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“…[ 1,2 ] This unique structural property could make DNA material be used in templating applications to guide various kinds of nanomaterials as rationalized in alignment layer, [ 3–5 ] anisotropic matrix, [ 6,7 ] metallization, [ 8–10 ] and lithographic use. [ 11,12 ] The chemical functions of DNA also enable to realize electrooptic devices, [ 13–15 ] photonic, [ 16,17 ] and electronics. [ 18,19 ] These applications look very promising because DNA material is abundant and sustainable in nature, [ 20–22 ] and the advanced extraction and purification processes of crude DNA materials make the price cheaper.…”

Section: Figurementioning

confidence: 99%

Generation of 2D DNA Microstructures via Topographic Control and Shearing

Park

Jeong

et al. 2020

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2D DNA microstructures are fabricated by applying the shear force to the DNA solution on the microchannels. The “U”‐like textures of DNA are clearly observed when the mechanical shearing is applied on the aqueous DNA sample under the topographic confinement, in which the shearing direction is perpendicular to the grooves. The optical textures of U‐like microstructures are directly observed by polarized optical microscopy (POM) and laser scanning fluorescent confocal polarizing microscopy (FCPM). The DNA microstructures can be modified by varying the width, showing the multiple U‐patterns along with channel direction due to the synergistic interaction between the elastic behavior of DNA chains and topographic boundary condition. The resultant microstructures can be used to align rod‐like liquid crystals (LCs) to generate alternatively oriented nematic phase and tilted focal conic domains (FCDs) in the smectic A phase. It is believed that this approach can suggest a hint to use to DNA materials for organizing multiscale hierarchical structures of soft‐ and biomaterials.

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Section: Figurementioning

confidence: 99%

Generation of 2D DNA Microstructures via Topographic Control and Shearing

Park

Jeong

et al. 2020

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“…The first strong absorption peak of pure DNA below 230 nm originates from the overlapping electronic absorptions of phosphate groups and sugar moieties. The second absorption band at λ max ~ 260 nm is attributed to the π-π* electronic transitions of the four heterocyclic bases in the nucleic acid (Kwon et al 2012).…”

Section: Uv-vis Spectramentioning

confidence: 99%

“…Complexes of two imidazole-based ionic liquids and a quaternary ammonium salt with pure salmon DNA were synthesized by ionexchange reactions. Although much research has been performed on DNA complexes carrying long alkyl chains (C 10 , C 16 , C 18 ) (Kwon et al 2012;Sivapragasam et al 2016), there is no information about physicochemical characterization of synthesized composites with allyl imidazole-based ionic liquids and quaternary ammonium salts with n-butyl chains.…”

Section: Introductionmentioning

confidence: 99%

Possible sensor applications of selected DNA–surfactant complexes

Nowak¹,

Wisła-Świder²,

Khachatryan³

et al. 2019

Eur Biophys J

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Although much research has been performed on DNA complexes carrying long alkyl chains (C10, C16, and C18), there is no information about physicochemical characterization of synthesized composites with allyl imidazole-based ionic liquids and quaternary ammonium salts with n-butyl chains. Here, complexes were synthesized by ion-exchange reactions between sonicated DNA and three ionic liquids (ILs) formed from two imidazole-based compounds, 1-allyl-3-methylimidazolium bromide (Amim) or 1-butyl-3-methylimidazolium bromide (Bmim), and from the quaternary ammonium salt tetra-n-butylammonium bromide (TBAB). Signals in UV-Vis, IR, and CD spectra indicating inclusion of small molecules into the DNA structure confirmed the formation of DNA complexes. Both IR and CD spectra indicated that the B-form conformation of the DNA did not change after the formation of the complexes. Similarly, X-ray diffraction patterns revealed that the formation of IL-DNA complexes did not change the structure of native B-form DNA. Molecular weight (M w) and radii of gyration (R g) values of IL-DNA complex chains, established by high-performance size exclusion chromatography coupled with multiangle-laser light-scattering with a differential refractive index detector, were significantly lower than those values found for native DNA molecules due to DNA fragmentation by sonication during complex formation and the direct effects of the IL on the DNA. Scanning electron microscopy images indicate the formation of nanofibres in DNA-Amim and DNA-Bmim complexes, whereas the formation of nanowires was found in samples of DNA-TBAB complexes. Changes in optical properties confirmed by UV and photoluminescence make DNA-IL complexes potential candidates for biosensor application.

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“…DNA as a biopolymer material exhibits a new organic alternatives to current inorganic functional materials for electronics and optoelectronics applications (Kwon et al 2012;Bauer 2014;Khazaeinezhad et al 2017). I can summarize some of these applications as follows.…”

Section: Dnamentioning

confidence: 99%

The miraculous dynamism of the Qur’an: An example of a modern reading reveals a DNA designation

Chaabani¹

2019

Int.J.Mod.Anthrop

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The major miracle of the Qur"an would reside in its ability to be virtuous, valid and worthwhile for all humans living at all times and everywhere. Here, I propose three major processes which would provide the basis for this dynamism peculiar to the Qur"an. A detailed example of one of these processes related to the scientific signs is presented. It starts from a verse that can represent a metaphor whereby DNA is designated Salsal (Arabic word refers to the swelling-expanding clay minerals). I have supported this metaphor showing that DNA and swelling-expanding clay minerals have really evident features in common. Moreover I have demonstrated the marvelous analogy that, coupled to this metaphor, permits to test its suitability by specifying that some DNA forms are similar to some potteries. Hence, according to my interpretation, this verse represents a wonderful painting that, elevated to an unusual pinnacle of creation, outlines information at the highest degree of scientific accuracy wearing a dress of superb Arabic rhetorical modes that only the light of knowledge and wisdom can penetrate it. The different research stages on this verse and other related ones show that the dynamic processes in question is not merely a dynamic progressive revelation of scientific signs during successive modern epochs, but also, if deeply analyzed, a dynamic grounding constructive for the scientific research. The present modern reading provides original interpretations based, among other things, on the making and the application of a modern approach that would permit to reach a rigorous academic level in the interpretation of the Qur"an text in general, and the allegorical verses related to scientific subjects in particular. In conclusion, the present research will advance our understanding on the dynamism of the Qur"an that should be shaped and implemented by re-reading Qur"an at all times and everywhere and trying continually to correct previous erroneous interpretations due mainly to a personal and socio-cultural-political influence and/or a limited scientific knowledge of the exegetes at a given epoch.

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Optical, electro-optic and optoelectronic properties of natural and chemically modified DNAs

Cited by 43 publications

References 69 publications

Generation of 2D DNA Microstructures via Topographic Control and Shearing

Generation of 2D DNA Microstructures via Topographic Control and Shearing

Possible sensor applications of selected DNA–surfactant complexes

The miraculous dynamism of the Qur’an: An example of a modern reading reveals a DNA designation

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