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Article ; Online: DNA-Nanocrystal Assemblies for Environmentally Responsive and Highly Efficient Energy Harvesting and Storage.

Kesama, Mallikarjuna Reddy / Kim, Sunghwan

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

2023 Volume 10, Issue 14, Page(s) e2206848

Abstract: Natural polymer-based and self-powered bioelectronic devices are attracting attention owing to an increased interest in human health monitoring and human-machine interfaces. However, obtaining both high efficiency and multifunctionality from a single ... ...

Abstract	Natural polymer-based and self-powered bioelectronic devices are attracting attention owing to an increased interest in human health monitoring and human-machine interfaces. However, obtaining both high efficiency and multifunctionality from a single natural polymer-based bioelectronics platform is still challenging. Here, molybdenum disulfide (MoS
MeSH term(s)	Humans ; Molybdenum ; Nanotechnology ; Nanocomposites ; Nanoparticles ; Polymers ; DNA
Chemical Substances	Molybdenum (81AH48963U) ; Polymers ; DNA (9007-49-2)
Language	English
Publishing date	2023-03-22
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2808093-2
ISSN	2198-3844 ; 2198-3844
ISSN (online)	2198-3844
ISSN	2198-3844
DOI	10.1002/advs.202206848
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Article ; Online: Metal and Lanthanide Ion-Co-doped Synthetic and Salmon DNA Thin Films.

Yoo, Sanghyun / Dugasani, Sreekantha Reddy / Chopade, Prathamesh / Kesama, Mallikarjuna Reddy / Gnapareddy, Bramaramba / Park, Sung Ha

ACS omega

2019 Volume 4, Issue 4, Page(s) 6530–6537

Abstract: Researchers have begun to use DNA molecules as an efficient template for arrangement of multiple functionalized nanomaterials for specific target applications. In this research, we demonstrated a simple process to co-dope synthetic DNA nanostructures (by ...

Abstract	Researchers have begun to use DNA molecules as an efficient template for arrangement of multiple functionalized nanomaterials for specific target applications. In this research, we demonstrated a simple process to co-dope synthetic DNA nanostructures (by a substrate-assisted growth method) and natural salmon DNA thin films (by a drop-casting method) with divalent metal ions (M
Language	English
Publishing date	2019-04-09
Publishing country	United States
Document type	Journal Article
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.9b00319
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Article ; Online: Band gap, dielectric constant, and susceptibility of DNA layers as controlled by vanadium ion concentration.

Kesama, Mallikarjuna Reddy / Dugasani, Sreekantha Reddy / Jung, Soon-Gil / Gnapareddy, Bramaramba / Park, Tuson / Park, Sung Ha

Nanotechnology

2019 Volume 31, Issue 8, Page(s) 85705

Abstract: Deoxyribonucleic acid (DNA) doped with transition metal ions shows great versatility for molecular-based biosensors and bioelectronics. Methodologies for developing DNA lattices (formed by synthetic double-crossover tiles) and DNA layers (used by natural ...

Abstract	Deoxyribonucleic acid (DNA) doped with transition metal ions shows great versatility for molecular-based biosensors and bioelectronics. Methodologies for developing DNA lattices (formed by synthetic double-crossover tiles) and DNA layers (used by natural salmon) doped with vanadium ions (V
Language	English
Publishing date	2019-11-01
Publishing country	England
Document type	Journal Article
ZDB-ID	1362365-5
ISSN	1361-6528 ; 0957-4484
ISSN (online)	1361-6528
ISSN	0957-4484
DOI	10.1088/1361-6528/ab53b0
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Article ; Online: Enhancing the electrical, optical, and magnetic characteristics of DNA thin films through Mn

Kesama, Mallikarjuna Reddy / Yun, Byung Kil / Dugasani, Sreekantha Reddy / Jung, Jong Hoon / Park, Sung Ha

Colloids and surfaces. B, Biointerfaces

2018 Volume 167, Page(s) 197–205

Abstract: DNA is one of the most propitious biomaterials for use in nanoscience and nanotechnology because of its exceptional characteristics, i.e. self-assembly and sequence-programmability. In this study, we fabricate sequence-designed double-crossover (DX) DNA ... ...

Abstract	DNA is one of the most propitious biomaterials for use in nanoscience and nanotechnology because of its exceptional characteristics, i.e. self-assembly and sequence-programmability. In this study, we fabricate sequence-designed double-crossover (DX) DNA lattices and naturally available salmon DNA (SDNA) thin films modified with the transition metal ion Mn
MeSH term(s)	DNA/chemistry ; Electricity ; Magnetic Fields ; Manganese/chemistry ; Optical Rotation ; Particle Size ; Surface Properties
Chemical Substances	Manganese (42Z2K6ZL8P) ; DNA (9007-49-2)
Language	English
Publishing date	2018-04-06
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1500523-9
ISSN	1873-4367 ; 0927-7765
ISSN (online)	1873-4367
ISSN	0927-7765
DOI	10.1016/j.colsurfb.2018.04.023
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Article: Enhancing the electrical, optical, and magnetic characteristics of DNA thin films through Mn2+ fortification

Kesama, Mallikarjuna Reddy / Byung Kil Yun / Jong Hoon Jung / Sreekantha Reddy Dugasani / Sung Ha Park

Colloids and surfaces. 2018 July 01, v. 167

2018

Abstract	DNA is one of the most propitious biomaterials for use in nanoscience and nanotechnology because of its exceptional characteristics, i.e. self-assembly and sequence-programmability. In this study, we fabricate sequence-designed double-crossover (DX) DNA lattices and naturally available salmon DNA (SDNA) thin films modified with the transition metal ion Mn2+. Phase transition of DX DNA lattices from crystalline to amorphous form controlled by varying the concentration of Mn2+ is discussed and a critical transition concentration ([Mn2+]C) is estimated. In addition, the electrical, optical, and magnetic properties of Mn2+-modified SDNA thin films including current, absorbance, photoluminescence, the X-ray photoelectron spectrum, and magnetization are studied to understand their conductivity, binding modes, energy transfer characteristics, chemical composition, and magnetism. Interestingly, the physical values such as the maximum current and photoluminescence, and the minimum absorbance, occur at around [Mn2+]C =4 mM, which may be due to the optimal incorporation of Mn2+ into the SDNA. The magnetization and susceptibility of SDNA thin films with Mn2+, served as magnetic dipoles, are studied under different temperature and magnetic field. The magnetization of SDNA thin films with [Mn2+]C shows an S-shaped curve, indicating ferromagnetism.
Keywords	absorbance ; biocompatible materials ; chemical composition ; DNA ; energy transfer ; films (materials) ; magnetic fields ; magnetic properties ; manganese ; nanotechnology ; phase transition ; photoluminescence ; salmon ; temperature
Language	English
Dates of publication	2018-0701
Size	p. 197-205.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1500523-9
ISSN	1873-4367 ; 0927-7765
ISSN (online)	1873-4367
ISSN	0927-7765
DOI	10.1016/j.colsurfb.2018.04.023
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Optoelectrical and mechanical properties of multiwall carbon nanotube-integrated DNA thin films.

Kesama, Mallikarjuna Reddy / Dugasani, Sreekantha Reddy / Cha, Yun Jeong / Son, Junyoung / Gnapareddy, Bramaramba / Yoo, Sanghyun / Yoon, Dong Ki / Park, Sung Ha

Nanotechnology

2019 Volume 30, Issue 24, Page(s) 245704

Abstract: Thin films made of deoxyribonucleic acid (DNA), dissolved in an aqueous solution, and cetyltrimethyl-ammonium-modified DNA (CDNA), dissolved in an organic solvent, utilising multiwall carbon nanotubes (MWCNTs) are not yet well-understood for use in ... ...

Abstract	Thin films made of deoxyribonucleic acid (DNA), dissolved in an aqueous solution, and cetyltrimethyl-ammonium-modified DNA (CDNA), dissolved in an organic solvent, utilising multiwall carbon nanotubes (MWCNTs) are not yet well-understood for use in optoelectronic device and sensor applications. In this study, we fabricate MWCNT-integrated DNA and CDNA thin films using the drop-casting method. We also characterise the optical properties (i.e. absorption spectra, Fourier-transform infrared spectra, Raman spectra, photoluminescence, and time-of-flight secondary ion mass spectrometry) to study spectral absorption, interaction, functional group, chirality, and compositional moiety and its distribution of MWCNTs in DNA and CDNA thin films. The electrical property for conductance and the mechanical characterisations of hardness, modulus and elasticity for stability are also discussed. Lastly, to show the feasibility of directional alignment of MWCNTs in DNA thin films, we perform an alignment experiment with MWCNTs in DNA via brushing and shearing methods, and we evaluate the results using polarised optical microscopy. Our simple methodology to align ingredients in DNA and CDNA thin films leveraging various optical, electrical and mechanical properties, provides great potential for the development of efficient devices and sensors.
MeSH term(s)	Cetrimonium/chemistry ; DNA/chemistry ; Electromagnetic Phenomena ; Mechanical Phenomena ; Nanotubes, Carbon/chemistry ; Spectrum Analysis
Chemical Substances	Nanotubes, Carbon ; DNA (9007-49-2) ; Cetrimonium (Z7FF1XKL7A)
Language	English
Publishing date	2019-02-27
Publishing country	England
Document type	Journal Article
ZDB-ID	1362365-5
ISSN	1361-6528 ; 0957-4484
ISSN (online)	1361-6528
ISSN	0957-4484
DOI	10.1088/1361-6528/ab0b0f
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Article ; Online: Luminophore Configuration and Concentration-Dependent Optoelectronic Characteristics of a Quantum Dot-Embedded DNA Hybrid Thin film.

Arasu, Velu / Dugasani, Sreekantha Reddy / Kesama, Mallikarjuna Reddy / Chung, Ho Kyoon / Park, Sung Ha

Scientific reports

2017 Volume 7, Issue 1, Page(s) 11567

Abstract: To be useful in optoelectronic devices and sensors, a platform comprising stable fluorescence materials is essential. Here we constructed quantum dots (QDs) embedded DNA thin films which aims for stable fluorescence through the stabilization of QDs in ... ...

Abstract	To be useful in optoelectronic devices and sensors, a platform comprising stable fluorescence materials is essential. Here we constructed quantum dots (QDs) embedded DNA thin films which aims for stable fluorescence through the stabilization of QDs in the high aspect ratio salmon DNA (SDNA) matrix. Also for maximum luminescence, different concentration and configurations of core- and core/alloy/shell-type QDs were embedded within SDNA. The QD-SDNA thin films were constructed by drop-casting and investigated their optoelectronic properties. The infrared, UV-visible and photoluminescence (PL) spectroscopies confirm the embedment of QDs in the SDNA matrix. Absolute PL quantum yield of the QD-SDNA thin film shows the ~70% boost due to SDNA matrix compared to QDs alone in aqueous phase. The linear increase of PL photon counts from few to order of 5 while increasing [QD] reveals the non-aggregation of QDs within SDNA matrix. These systematic studies on the QD structure, absorbance, and concentration- and thickness-dependent optoelectronic characteristics demonstrate the novel properties of the QD-SDNA thin film. Consequently, the SDNA thin films were suggested to utilize for the generalised optical environments, which has the potential as a matrix for light conversion and harvesting nano-bio material as well as for super resolution bioimaging- and biophotonics-based sensors.
MeSH term(s)	DNA/chemistry ; Luminescent Measurements/methods ; Quantum Dots ; Spectrum Analysis/methods
Chemical Substances	DNA (9007-49-2)
Language	English
Publishing date	2017-09-14
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-017-11797-7
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Article ; Online: Morphological and Optoelectronic Characteristics of Double and Triple Lanthanide Ion-Doped DNA Thin Films.

Kesama, Mallikarjuna Reddy / Dugasani, Sreekantha Reddy / Yoo, Sanghyun / Chopade, Prathamesh / Gnapareddy, Bramaramba / Park, Sung Ha

ACS applied materials & interfaces

2016 Volume 8, Issue 22, Page(s) 14109–14117

Abstract: Double and triple lanthanide ion (Ln(3+))-doped synthetic double crossover (DX) DNA lattices and natural salmon DNA (SDNA) thin films are fabricated by the substrate assisted growth and drop-casting methods on given substrates. We employed three ... ...

Abstract	Double and triple lanthanide ion (Ln(3+))-doped synthetic double crossover (DX) DNA lattices and natural salmon DNA (SDNA) thin films are fabricated by the substrate assisted growth and drop-casting methods on given substrates. We employed three combinations of double Ln(3+)-dopant pairs (Tb(3+)-Tm(3+), Tb(3+)-Eu(3+), and Tm(3+)-Eu(3+)) and a triple Ln(3+)-dopant pair (Tb(3+)-Tm(3+)-Eu(3+)) with different types of Ln(3+), (i.e., Tb(3+) chosen for green emission, Tm(3+) for blue, and Eu(3+) for red), as well as various concentrations of Ln(3+) for enhancement of specific functionalities. We estimate the optimum concentration of Ln(3+) ([Ln(3+)]O) wherein the phase transition of Ln(3+)-doped DX DNA lattices occurs from crystalline to amorphous. The phase change of DX DNA lattices at [Ln(3+)]O and a phase diagram controlled by combinations of [Ln(3+)] were verified by atomic force microscope measurement. We also developed a theoretical method to obtain a phase diagram by identifying a simple relationship between [Ln(3+)] and [Ln(3+)]O that in practice was found to be in agreement with experimental results. Finally, we address significance of physical characteristics-current for evaluating [Ln(3+)]O, absorption for understanding the modes of Ln(3+) binding, and photoluminescence for studying energy transfer mechanisms-of double and triple Ln(3+)-doped SDNA thin films. Current and photoluminescence in the visible region increased as the varying [Ln(3+)] increased up to a certain [Ln(3+)]O, then decreased with further increases in [Ln(3+)]. In contrast, the absorbance peak intensity at 260 nm showed the opposite trend, as compared with current and photoluminescence behaviors as a function of varying [Ln(3+)]. A DNA thin film with varying combinations of [Ln(3+)] might provide immense potential for the development of efficient devices or sensors with increasingly complex functionality.
MeSH term(s)	DNA/chemistry ; Electromagnetic Phenomena ; Energy Transfer ; Lanthanoid Series Elements/chemistry ; Phase Transition
Chemical Substances	Lanthanoid Series Elements ; DNA (9007-49-2)
Language	English
Publishing date	2016-05-23
Publishing country	United States
Document type	Journal Article
ISSN	1944-8252
ISSN (online)	1944-8252
DOI	10.1021/acsami.6b02880
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Article ; Online: Magneto-optical and thermal characteristics of magnetite nanoparticle-embedded DNA and CTMA-DNA thin films.

Kesama, Mallikarjuna Reddy / Yun, Byung Kil / Ha, Taewoo / Dugasani, Sreekantha Reddy / Son, Junyoung / Kim, Jae Hoon / Jung, Joung Hoon / Park, Sung Ha

Nanotechnology

2018 Volume 29, Issue 46, Page(s) 465703

Abstract: Recently, DNA molecules embedded with magnetite ( ... ...

Abstract	Recently, DNA molecules embedded with magnetite (Fe
MeSH term(s)	Cetrimonium Compounds/chemistry ; DNA/chemistry ; Luminescent Measurements ; Magnetic Fields ; Magnetite Nanoparticles/analysis ; Magnetite Nanoparticles/chemistry ; Plasma Gases/chemistry ; Refractometry ; Spectrophotometry, Ultraviolet ; Spectrum Analysis, Raman ; Temperature ; Thermogravimetry
Chemical Substances	Cetrimonium Compounds ; Magnetite Nanoparticles ; Plasma Gases ; DNA (9007-49-2) ; cetrimonium (Z7FF1XKL7A)
Language	English
Publishing date	2018-08-31
Publishing country	England
Document type	Journal Article
ZDB-ID	1362365-5
ISSN	1361-6528 ; 0957-4484
ISSN (online)	1361-6528
ISSN	0957-4484
DOI	10.1088/1361-6528/aade31
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Article ; Online: Identifying Fibrillization State of Aβ Protein

Heo, Chaejeong / Ha, Taewoo / You, Chunjae / Huynh, Thuy / Lim, Hosub / Kim, Jiwon / Kesama, Mallikarjuna Reddy / Lee, Jinkee / Kim, Teun-Teun / Lee, Young Hee

ACS nano

2020 Volume 14, Issue 6, Page(s) 6548–6558

Abstract: Progressive Alzheimer's disease is correlated with the oligomerization and fibrillization of the amyloid beta (Aβ) protein. We identify the fibrillization stage of the Aβ protein through label-free near-field THz conductance measurements in a buffer ... ...

Abstract	Progressive Alzheimer's disease is correlated with the oligomerization and fibrillization of the amyloid beta (Aβ) protein. We identify the fibrillization stage of the Aβ protein through label-free near-field THz conductance measurements in a buffer solution. Frequency-dependent conductance was obtained by measuring the differential transmittance of the time-domain spectroscopy in the THz range with a molar concentration of monomer, oligomer, and fibrillar forms of the Aβ protein. Conductance at the lower frequency limit was observed to be high in monomers, reduced in oligomers, and dropped to an insulating state in fibrils and increased proportionally with the Aβ protein concentration. The monotonic decrease in the conductance at low frequency was dominated by a simple Drude component in the monomer with concentration and nonlinear conductance behaviors in the oligomer and fibril. By extracting the structural localization parameter, a dimensionless constant, with the modified Drude-Smith model, we defined a dementia quotient (DQ) value (0 <
MeSH term(s)	Alzheimer Disease/diagnosis ; Amyloid beta-Peptides ; Humans
Chemical Substances	Amyloid beta-Peptides
Language	English
Publishing date	2020-03-24
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1936-086X
ISSN (online)	1936-086X
DOI	10.1021/acsnano.9b08572
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