Search results for: Dong Kee Yi

Items from 1 to 20 out of 40 results

article

Interpenetrating polymer network based hydrogel: A smart approach for corroborating wound healing of various capacity

Manoj Kumar Sarangi, Sasmita Padhi, L. D. Patel, Goutam Rath, more

Journal of Applied Polymer Science > 140 > 34 > n/a - n/a

Hemorrhage of high intensity usually leads to severe mortality accidents, disaster, and warfare. The concomitant wound thereby induces immense psychological as well as physical trauma to the patients. Hence, a faster hemostasis with smart wound healing approaches are highly essential to deal such critical/life threatening situations. The traditional approaches such as implementation of gauze and bandages...

article

Cyclodextrin Metal–Organic Frameworks: A Green Metal–Organic Framework‐Cyclodextrin MOF: A Novel Multifunctional Material Based Triboelectric Nanogenerator for Highly Efficient Mechanical Energy Harvesting (Adv. Funct. Mater. 28/2021)

Sugato Hajra, Manisha Sahu, Aneeta Manjari Padhan, In Sang Lee, more

Advanced Functional Materials > 31 > 28 > n/a - n/a

In article number 2101829, Sitansu Sekhar Nanda, Hoe Joon Kim, and co‐workers demonstrate the application of cyclodextrin metal–organic framework (CD‐MOF), a green multifunctional material, to the electrifying layer of a multi‐unit triboelectric nanogenerator. The developed device exhibits outstanding power outputs along with stable operation. The fabricated device output is utilized for self‐powered...

article

A Green Metal–Organic Framework‐Cyclodextrin MOF: A Novel Multifunctional Material Based Triboelectric Nanogenerator for Highly Efficient Mechanical Energy Harvesting

Sugato Hajra, Manisha Sahu, Aneeta Manjari Padhan, In Sang Lee, more

Advanced Functional Materials > 31 > 28 > n/a - n/a

The naturally available cyclodextrin has opened up a wide range of research avenues because of its superior characteristics such as being non‐toxic, biocompatible, and edible. The cyclodextrin is the green multifunctional material that can add to the triboelectric series and extend its self‐powered applications. The ultrasonic synthesized cyclodextrin metal–organic framework (CD‐MOF) designed using...

article

Structural and Electrical Properties of Nb₃I₈ Layered Crystal

Bum Jun Kim, Byung Joo Jeong, Seungbae Oh, Sudong Chae, more

physica status solidi (RRL) – Rapid Research Letters > 13 > 3 > n/a - n/a

Centimeter‐size single‐crystalline Nb₃I₈, a new family of two‐dimensional materials, is first synthesized by a vapor transport reaction of niobium and iodine. Through the mechanical exfoliation method, the bulk Nb₃I₈ crystal is cleaved to monolayer and multi‐layered flakes. It is confirmed to consist of numerous monolayers of Nb₃I₈ bonded by weak van der Waals interaction. By utilizing atomic force...

article

Engineering nanoparticle strategies for effective cancer immunotherapy

Hong Yeol Yoon, Subramanian Tamil Selvan, Yoosoo Yang, Min Ju Kim, more

Biomaterials > 2018 > 178 > C > 597-607

Cancer immunotherapy has been emerging in recent years, due to the inherent nature of the immune system. Although recent successes of immunotherapeutics in clinical application have attracted development of a novel immunotherapeutics, the off-target side effect and low immunogenicity of them remain challenges for the effective cancer immunotherapy. Theranostic nanoparticle system may one of key technology...

article

Plasmonic organic bulk–heterojunction solar cells based on hydrophobic gold nanorod insertion into active layers

Zhihai Liu, Tuntun Wang, Sitansu Sekhar Nanda, Dong Kee Yi, more

Journal of Applied Polymer Science > 135 > 9 > n/a - n/a

In this work, we fabricated plasmonic organic bulk–heterojunction solar cells by inserting hydrophobic gold nanorods (GNRs) into the active layers. Power conversion efficiency was improved from 7.43% to 8.22% because the plasmonic effect of GNRs improved the light harvesting efficiency. Maximum exciton generation rate was increased from 1.35 × 10⁻²⁶ to 1.51× 10⁻²⁶m⁻³s⁻¹, and the electron mobility...

article

CuO embedded silica nanoparticles for tungsten oxidation via a heterogeneous Fenton-like reaction

Kijung Kim, Dong Kee Yi, Ungyu Paik

Microelectronic Engineering > 2017 > 183-184 > C > 58-63

The Fenton reaction is used for the oxidation of tungsten via the production of hydroxyl radicals under acidic conditions. However, the narrow working pH range required for ideal reaction conditions limits the applications of these reactions. Herein, we developed a simple heterogeneous Fenton-like system for hydroxyl radical production over a broad pH range. Copper oxide nanoparticles (NPs) grown...

article

Recent advances in biocompatible semiconductor nanocrystals for immunobiological applications

Sitansu Sekhar Nanda, Min Jik Kim, Kwangmeyung Kim, Georgia C. Papaefthymiou, more

Colloids and Surfaces B: Biointerfaces > 2017 > 159 > C > 644-654

Quantum confinement in inorganic semiconductor nanocrystals produces brightly luminescent nanoparticles endowed with unique photo-physical properties, such as tunable optical properties. These have found widespread applications in nanotechnology. The ability to render such nanostructures biocompatible, while maintaining their tunable radiation in the visible range of the electromagnetic spectrum,...

article

Role of the oxidation state of cerium on the ceria surfaces for silicate adsorption

Jihoon Seo, Jinok Moon, Joo Hyun Kim, Kangchun Lee, more

Applied Surface Science > 2016 > 389 > C > 311-315

In this study, we have investigated the role of the Ce oxidation state (Ce³⁺/Ce⁴⁺) on the CeO₂ surfaces for silicate adsorption. In aqueous medium, the Ce³⁺ sites lead to the formation of −OH groups at the CeO₂ surface through H₂O dissociation. Silicate ions can adsorb onto the CeO₂ surface through interaction with the −OH groups (−Ce−OH−+−Si−O⁻↔−Ce−O−Si−+OH⁻). As the Ce³⁺ concentration increased...

article

Size-dependent interactions of silica nanoparticles with a flat silica surface

Jihoon Seo, Joo Hyun Kim, Myoungjae Lee, Jinok Moon, more

Journal of Colloid and Interface Science > 2016 > 483 > C > 177-184

We have investigated the surface chemistry of SiO₂ nanoparticles (NPs) with different sizes and their corresponding interactions with a flat substrate of surface curvature ∼0. As the size of the NPs increases, the SiO₂ surface is increasingly covered with H-bonded silanol groups, thereby increasing the ζ-potential and shifting the isoelectric point higher in pH. Interactions between the SiO₂ NPs and...

article

Fabrication and optical studies of epoxy-quantum-dot nanocomposites

Dong Kee Yi

Materials Letters > 2016 > 182 > C > 85-89

Light emitting quantum dots were dispersed, particle-particle distance ~50±8 nm, in an epoxy resin through the incorporation of ethylene glycol surfactant into the organic passivating layer of the quantum-dot nanocrystals. Evaporation of the wetting solvent enabled the ethylene glycol surfactant to incorporate into the hydrophobic layer of the semiconductor nanocrystals by interfacial interaction...

article

Raman spectrum of graphene with its versatile future perspectives

Sitansu Sekhar Nanda, Min Jik Kim, Kwi Seok Yeom, Seong Soo A. An, more

TrAC Trends in Analytical Chemistry > 2016 > 80 > C > 125-131

Raman spectroscopy is performing as a powerful analytical technique for qualitative and quantitative analysis of graphene and graphene-related compounds. Graphene and graphene-related compounds exhibit intense Raman vibrations. Raman spectroscopic techniques for determination of several graphene layers, and the quality and type of edges, disorders, and functional groups in graphene and graphene-related...

article

Novel semiconducting CdSe quantum dot based electrochemical capacitors

Joonho Bae, Ungyu Paik, Dong Kee Yi

Materials Letters > 2016 > 162 > Complete > 230-234

For the first time, we report on novel electrochemical capacitors using semiconducting CdSe quantum dots (QDs) as electrodes. Semiconducting QDs with two colors (red, orange) possessing high quantum yield were deposited on transparent ITO substrates to form electrodes of the electrochemical supercapacitors. The two kinds of QDs demonstrated typical capacitive cyclic voltammetry behavior in 2M H₂SO...

article

Surface modification and local orientations of surface molecules in nanotherapeutics

Md. Lutful Amin, Jae Yeon Joo, Dong Kee Yi, Seong Soo A. An

Journal of Controlled Release > 2015 > 207 > Complete > 131-142

Nanotechnology has emerged as a powerful tool for various therapeutic applications, solving many difficulties in both diagnosis and treatment. However, many obstacles in complex biological systems have impeded the successful application of therapeutic nanoparticles, and fine-tuning nanoparticle properties have become extremely important in developing highly effective nanomedicines. To this end, particles...

article

Synthesis and anti-bacterial activity of AuNRs–PS–MNPs

Mohankandhasamy Ramasamy, Yuejing Zhu, Ungyu Paik, Dong Kee Yi

Materials Letters > 2014 > 137 > Complete > 479-482

Novel, recyclable anti-bacterial Janus particles (AuNRs–PS–MNPs) were produced successfully by combination of a confined convective assembly method and modified layer-by-layer technology. The Janus particles, one hemisphere of polystyrene coated by gold nanorods (AuNRs) and the other was coated by magnetic nanoparticles (MNPs), have both the properties of AuNRs and MNPs, therefore AuNRs–PS–MNPs could...

article

Synthesis of silica coated zinc oxide–poly(ethylene-co-acrylic acid) matrix and its UV shielding evaluation

Mohankandhasamy Ramasamy, Yu Jun Kim, Haiyan Gao, Dong Kee Yi, more

Materials Research Bulletin > 2014 > 51 > Complete > 85-91

Silica coated zinc oxide nanoparticles (Si-ZnO NPs) (7nm thick) were synthesized successfully and melt blended with poly(ethylene-co-acrylic acid) (PEAA resin) to improving ultraviolet (UV) shielding of zinc oxide nanoparticles (ZnO NPs). The photostability of both the ZnO NPs and Si-ZnO NPs were analyzed by the difference in photoluminescence (PL) and by methylene blue (MB) degradation. Photo-degradation...

article

A study of Gd loaded silica nanoparticles for both optical and magnetic resonance imaging of cells

Haisung Lee, Dong Kee Yi

Materials Letters > 2013 > 100 > Complete > 98-101

We have developed fluorescent nanoparticle-based T ₁ contrast enhancing magnetic resonance imaging (MRI) agents, for the purpose of dual imaging in vivo. Gd(III) chelated silica nanoparticles were successfully synthesized with dual-mode diagnostics feasibility in MRI and fluorescence imaging analysis. Gd-chelated silica nanoparticles were studied, which were formed via polyelectrolyte encapping...

article

Coercivity enhancement of FePt thin films coated with a monolayer array of γ-Fe2O3 nanoparticles

Dong Kee Yi, Irene Zafiropoulou, Georgia C. Papaefthymiou

Thin Solid Films > 2012 > 522 > Complete > 376-380

We report on a two-dimensional magnetic nanocomposite material consisting of a monolayer of ~11nm diameter colloidal γ-Fe ₂ O ₃ nanoparticles arrayed by the Langmuir–Blodgett method over a ~3nm thin film of FePt deposited on a glass slide substrate, thus exploiting the advantages of both thin film fabrication and chemical synthesis. The FePt film was obtained by magnetron sputtering...

article

Immunostimulatory effects of gold nanorod and silica-coated gold nanorod on RAW 264.7 mouse macrophages

Ji Young Lee, Wansu Park, Dong Kee Yi

Toxicology Letters > 2012 > 209 > 1 > 51-57

In this study, we have investigated immunostimulatory effects of gold nanorod (Au) and silica-coated gold nanorod (SiAu) concerned with inflammatory mediators such as calcium (Ca), hydrogen peroxide, nitric oxide (NO), various cytokines, prostaglandin E2 (PGE2), transcription factors, and immune response gene in RAW 264.7 mouse macrophages.Both Au and SiAu significantly increased the release of Ca,...

article

Tumor‐Targeting Gold Particles for Dual Computed Tomography/Optical Cancer Imaging

In‐Cheol Sun, Dae‐Kyung Eun, Heebeom Koo, Chang‐Yong Ko, more

Angewandte Chemie > 123 > 40 > 9520 - 9523

Zweifach im Blickpunkt: Eine duale Goldnanopartikel(AuNP)‐Sonde für die Computertomographie (CT) und optische Bildgebung wurde entwickelt. Ihre exzellenten Eigenschaften – Stabilität, Tumorerkennung, Röntgenabsorption und Matrixmetalloproteinase(MMP)‐aktivierbare Fluoreszenzwiederherstellung – wurden durch Oberflächenmodifikation der AuNPs mit Glycolchitosan und MMP‐Fluoreszenzsonden erreicht.

Publication date

Last 3 years (1)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Publication language

English (39)
Undetermined (1)

Keywords

Data set

Elsevier (16)
ACS (13)
Wiley (8)
Springer (3)

Journal

Materials Letters (5)
Langmuir (4)
Nano Letters (3)
Advanced Functional Materials (2)
Chemistry of Materials (2)
Journal of Applied Polymer Science (2)
Angewandte Chemie (1)
Angewandte Chemie International Edition (1)
Applied Surface Science (1)
Bioconjugate Chemistry (1)
Biomaterials (1)
Biotechnology Letters (1)
Colloids and Surfaces B: Biointerfaces (1)
Current Applied Physics (1)
Journal of Colloid and Interface Science (1)
Journal of Controlled Release (1)
Journal of the American Chemical Society (1)
Macromolecules (1)
Materials Research Bulletin (1)
Microelectronic Engineering (1)
Microfluidics and Nanofluidics (1)
Microscopy Research and Technique (1)
The Journal of Physical Chemistry C (1)
Thin Solid Films (1)
Toxicology Letters (1)
Toxicology and Environmental Health Sciences (1)
TrAC Trends in Analytical Chemistry (1)
physica status solidi (RRL) – Rapid Research Letters (1)
more

INFONA - science communication portal

Search results for: Dong Kee Yi

Interpenetrating polymer network based hydrogel: A smart approach for corroborating wound healing of various capacity

Cyclodextrin Metal–Organic Frameworks: A Green Metal–Organic Framework‐Cyclodextrin MOF: A Novel Multifunctional Material Based Triboelectric Nanogenerator for Highly Efficient Mechanical Energy Harvesting (Adv. Funct. Mater. 28/2021)

A Green Metal–Organic Framework‐Cyclodextrin MOF: A Novel Multifunctional Material Based Triboelectric Nanogenerator for Highly Efficient Mechanical Energy Harvesting

Structural and Electrical Properties of Nb₃I₈ Layered Crystal

Engineering nanoparticle strategies for effective cancer immunotherapy

Plasmonic organic bulk–heterojunction solar cells based on hydrophobic gold nanorod insertion into active layers

CuO embedded silica nanoparticles for tungsten oxidation via a heterogeneous Fenton-like reaction

Recent advances in biocompatible semiconductor nanocrystals for immunobiological applications

Role of the oxidation state of cerium on the ceria surfaces for silicate adsorption

Size-dependent interactions of silica nanoparticles with a flat silica surface

Fabrication and optical studies of epoxy-quantum-dot nanocomposites

Raman spectrum of graphene with its versatile future perspectives

Novel semiconducting CdSe quantum dot based electrochemical capacitors

Surface modification and local orientations of surface molecules in nanotherapeutics

Synthesis and anti-bacterial activity of AuNRs–PS–MNPs

Synthesis of silica coated zinc oxide–poly(ethylene-co-acrylic acid) matrix and its UV shielding evaluation

A study of Gd loaded silica nanoparticles for both optical and magnetic resonance imaging of cells

Coercivity enhancement of FePt thin films coated with a monolayer array of γ-Fe2O3 nanoparticles

Immunostimulatory effects of gold nanorod and silica-coated gold nanorod on RAW 264.7 mouse macrophages

Tumor‐Targeting Gold Particles for Dual Computed Tomography/Optical Cancer Imaging

Filter options

Publication date

Publication language

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Dong Kee Yi

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication language

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options