Jeongyeon Ahn

Minseong Kwon

Hyaemin Kim

Chanhyuk Kang

Euiju Yong

Jiwon Kang

Kio Kim

Kyuho Jin

Youn Jun Jang

Moon Kyu Park

Min Chul Kang

Youhyun Son

Donghyeon Nam

Yoojoo An

Juhwan Song

Yongkwon Song

Hyun-Jin Shin

Seokmin Lee

Hyemi Yeon

Woojin Bae

Changeun Yoo

Younji Ko

Cheong Hoon Kwon

Seungho Kwag

Hyein Ko

Jongkuk Ko

Dongyeeb Shin

Yongmin Ko

Jimin Choi

Seunghui Woo

Ikjun Cho

Junsang Yun

Sungkun Kang

Donghee Kim

Dojin Kim

Minjung Kye

Eunji Kim

Inhye Jeon

Bonkee Koo

Sanghyuk Cheong

Sujin Kim

Jongook Yang

Dongjin Jang

Myeongjin Shim

Younghoon Kim

Sujin Lee

Minkyung Park

Kyungyun Kook

Sejeong Park

Miseon Yoon

Hyeonhee Baek

Sungwoo Kim

Bokyong Lee

Chanwoo Lee

Seryon Lee

Jeongjoo Park

Inpyo Kim

Woojae Chang

Jeongmin Mo

Chanseok Lee

Wondo Choi

Boyeon Kim

Junha Pak

Jaesung Lyu

Soohyeong Lee

Jaeyeong Jang

Beomjune Kim

Seonho Lee

Taeyong Kim

Jihyun Park

Hyeongrae Kim

Sungha Choi

Jiwon Bok

Hyunjun Hwang

Minseo Seo

Saeyeon Baek

Shihyun Chang

Yeonsu Oh

Insung Kim

Chaeyeon Shin

에너지 저장 전극 (배터리/슈퍼커패시터)
생체연료전지 전극
수소발생 전극
마찰전기발전소자 전극

고려대학교 고분자 관련 학과 소개

This study focused on synthesizing copper aluminate and the compound's applicability to laser direct structuring technology. Since aluminum weighs less and costs less than chromium, this study investigated its potential as a substitute in copper chromate, the main additive of LDS materials. Copper aluminate was synthesized using a sol-gel method. The synthesized powder was then applied to two types of resin, polycarbonate (thermoplastic) and polyimide (thermosetting). After optimum processing at each laser parameter, the metal patterns are formed by electroless plating. Fabricated patterns were observed using optical microscopy. This study confirmed that copper aluminate can be used in LDS (Laser direct structuring) technology and that, furthermore, it supports the formation of conductive patterns with both thermoplastic and thermosetting resins.

Stitchable supercapacitors with high energy density and high rate capability using metal nanoparticle-assembled cotton threads

Layer-by-layer assembled (high-energy carbon nanotube/conductive carbon nanotube) n nanocomposites for high volumetric capacitance supercapacitor electrodes

Unlocking high-efficiency energy storage and conversion with biocompatible electrodes: the key role of interfacial interaction assembly and structural design

Layer-by-layer assembly of inorganic nanosheets and polyelectrolytes for reverse osmosis composite membranes

Metal nanoparticle fluids with magnetically induced electrical switching properties

High-capacity sulfur copolymer cathode with metallic fibril-based current collector and conductive capping layer

Resistive switching memory properties of layer-by-layer assembled enzyme multilayers

Oral Presentation: 1LA-5; Functional nanomaterials solution-processed with self assembled polymers for photo-electronic devices

Oral Presentation: 1LA-7; Unraveling the enhanced internal quantum efficiency and stability of metal nanoparticles-embedded organic photovoltaic cells

1LA-4

Layer-by-layer assembled enzyme multilayers with adjustable memory performance and low power consumption via molecular-level control

Micro‐Corrugated Hydrogel Electrodes for High‐Performance Biofuel Cells via Capillary Force and Ligand Exchange‐Induced Metal Nanoparticle Assembly

Multicatalytic colloids with highly scalable, adjustable, and stable functionalities in organic and aqueous media

Interfacial control and design of conductive nanomaterials for transparent nanocomposite electrodes

High-performance electrochromic films with fast switching times using transparent/conductive nanoparticle-modulated charge transfer

Recent Advances in Lithium Metal Anodes with Liquid Electrolytes: Interfacial Interaction‐Driven Assembly for Dendrite Suppression and Long‐Term Stability

고려대학교 화공생명공학과 초박막 기반 에너지 전극 연구실

A carbonization/interfacial assembly-driven electroplating approach for water-splitting textile electrodes with remarkably low overpotentials and high operational …

Highly conductive electrocatalytic gold nanoparticle-assembled carbon fiber electrode for high-performance glucose-based biofuel cells

Inorganic nanoparticle multilayers using photo-crosslinking layer-by-layer assembly and their applications in nonvolatile memory devices

Transistor memory devices with large memory windows, using multi-stacking of densely packed, hydrophobic charge trapping metal nanoparticle array

Layer-by-layer assembled multilayers using catalase-encapsulated gold nanoparticles

Functional nanocomposites with perfect nanoblending between water-soluble polymers and hydrophobic inorganic nanoparticles: applications to electric-stimuli …

Electrochemical sensors based on porous nanocomposite films with weak polyelectrolyte-stabilized gold nanoparticles

Electronic effects of nano-confinement in functional organic and inorganic materials for optoelectronics

Multi-biocatalytic properties of layerby-layer assembled lysozyme/catalase multilayers

Effect of redox proteins on the behavior of non-volatile memory

Selective Ligand Exchange Process with Amine-Functionalized Polymers for Charge Injection Control with Improved Electroluminescence Performance on …

Textile-type Lithium-ion Battery Cathodes with High Capacity and High Rate Capability

전자전달 능력이 향상된 생체연료전지 전극 및 그 제조방법

리튬친화적 탄소나노튜브 기반의 나노 다공성 분리막 개발 및 이를 이용한 고성능 리튬메탈 배터리

덴드라이트 형성이 억제된 리튬금속 전극, 이의 제조방법 및 이를 포함하는 이차전지

나노입자 자기조립을 이용한 하이드로겔 표면 전극 코팅 및 제조 방법

직물 타입의 티타늄 산화물 (TiOx) 기반 다공성 물 분해 전극 및 제조 방법

나노블렌딩 어셈블리를 포함하는 에너지 저장 장치 음극용 나노복합체, 이의 제조방법, 및 이를 포함하는 음극과 에 너지 저장 장치

탄소나노튜브 복합체 전기도금을 이용한 수전해용 다공성 전극 및 제조 방법

탄소 지지체 기반 다양한 금속 전극 제조 방법 및 이를 기반으로 고성능 배터리 제작

고용량 및 고안정성 이차전지용 직물 기반 음극집전체 및 이의 제조방법

칼코게나이드계 나노복합체를 포함하는 직물 기반 슈도커패시터 전극, 이의 제조방법 및 이를 포함하는 슈도커패시터

계면 설계를 통한 탄소 지지체 기반의 다공성 수분해 전극 및 제조 방법

효소기반 전극, 그 제조방법 및 그 응용

직물소재 기반 친수성 금속 전극의 제조방법 및 이로부터 제조된 직물소재 기반 친수성 금속 전극

수분해 촉매 및 그 제조방법

직물소재를 이용한 리튬-황 전지 양극, 이를 포함하는 리튬-황 전지 및 그 제조방법

테트라옥틸암모늄으로 안정화된 은 나노입자의 제조방법

직물소재 기반 전도성 구조체 제조방법 및 그 응용

탄성 전극 및 이의 제조방법

전기화학소자용 분리막 및 그 제조방법

직물소재 기반 플렉시블 알루미늄 전극 및 그 제조방법

직물소재 기반 다공성 물분해 촉매 및 그 제조방법

전기전도성 박막의 제조방법

직물소재 기반 플렉시블 전극 및 이의 제조방법

전극, 이를 이용한 생체연료전지, 및 이의 제조방법

슈퍼커패시터 전극 및 그 제조방법

플렉시블 전극, 이를 이용한 생체연료전지, 및 이의 제조방법

에너지 저장용 실 및 그 제조방법

플렉시블 전극 및 이의 제조방법

아민기를 갖는 덴드리머로 리간드 치환된 양자점 발광층을 포함하는 양자점 발광소자 및 이의 제조방법

에너지 저장 소자용 전극 및 그 제조방법

고성능 초박막 슈퍼커패시터 전극, 그 제조방법 및 이를 포함하는 슈퍼커패시터

음각, 양각 또는 이중양각 패턴이 형성된 마찰전기필름의 제조방법, 이에 의해 제조된 마찰전기필름 및 이를 포함하는 고성능 마찰전기소자

층상자기조립법을 이용한 다중촉매 콜로이드의 제조방법 및 이로부터 제조된 다중촉매 콜로이드

야누스 나노복합체 다층막, 그 제조방법 및 이를 포함하는 전극

다중벽 탄소나노튜브/전이금속 나노입자 다층박막 및 그 제조방법

리간드 첨가-유도 층상 자기조립법을 이용한 나노복합체 필름의 제조방법 및 이로부터 제조된 나노복합체 필름

카르복실기 함유 고분자의 리간드 흡착법을 기반으로 하는 층상 자기조립법을 이용한 페로브스카이트 타입의 나노입자 기반 나노복합체 필름

광경화 층상 자기조립법을 이용한 무기물 나노 입자 다층막의 제조방법 및 이로부터 제조된 무기물 나노 입자 다층막 및 이를 포함하는 전기전자소자

다기능성 나노입자 콜로이드 기반 유체 및 이의 제조방법

자성이 유도된 전기 스위칭 성질을 갖는 금속 나노입자 유체

층상자기조립을 이용하여 제조된 가역적 상이동이 가능한 다기능성 물질 및 이의 제조방법

단백질 레이어를 포함하는 전계효과 트랜지스터 메모리 장치 및 그의 제조방법

레이어-바이-레이어 코팅 및 그 제조방법

유기매질 내에서 친핵치환 반응에 의해서 층상조립으로 유도된 다기능성 콜로이드 나노 복합체 및 그 제조방법

초상자성 나노입자를 포함하는 나노복합체 다층박막 필름 및 이의 제조방법

Fabrication of highly ordered multilayer films using a spin self‐assembly method

Nanostructured electrochemical sensor based on dense gold nanoparticle films

Flexible supercapacitor electrodes based on real metal-like cellulose papers

Layer-by-layer assembled charge-trap memory devices with adjustable electronic properties

Nanoporous block copolymer micelle/micelle multilayer films with dual optical properties

High-power hybrid biofuel cells using layer-by-layer assembled glucose oxidase-coated metallic cotton fibers

Unraveling the origin of operational instability of quantum dot based light-emitting diodes

Colloidal spherical quantum wells with near-unity photoluminescence quantum yield and suppressed blinking

Immobilization of silver nanoparticle-decorated silica particles on polyamide thin film composite membranes for antibacterial properties

Force-assembled triboelectric nanogenerator with high-humidity-resistant electricity generation using hierarchical surface morphology

Investigation of the interactions between ligand-stabilized gold nanoparticles and polyelectrolyte multilayer films

Polymeric multilayer films comprising deconstructible hydrogen-bonded stacks confined between electrostatically assembled layers

Fabrication of polyelectrolyte multilayer films comprising nanoblended layers

Water-based thixotropic polymer gel electrolyte for dye-sensitized solar cells

Tunable superhydrophobic and optical properties of colloidal films coated with block‐copolymer‐micelles/micelle‐multilayers

Stabilization of polymer‐hydrogel capsules via thiol–disulfide exchange

Direct incorporation of silver nanoparticles onto thin-film composite membranes via arc plasma deposition for enhanced antibacterial and permeation performance

Electrically bistable properties of layer-by-layer assembled multilayers based on protein nanoparticles

A metal‐like conductive elastomer with a hierarchical wrinkled structure

Selective metallization on copper aluminate composite via laser direct structuring technology

Jinhan Cho

A very short processing time for making well‐organized multilayer films can be achieved employing the novel spin self‐assembly method described in this paper. The authors elaborate on the advantages of this method versus conventional self‐assembly methods for the fabrication of multilayer polyelectrolyte films. The Figure illustrates that the spinning process (bottom) yields far better organized layers than for instance the direct dipping method (top).

Polyelectrolyte (PE)/gold nanoparticle hybrid films that can be utilized as efficient electrochemical sensors were prepared by infiltrating 4-(dimethylamino)pyridine-stabilized gold nanoparticles (DMAP−Au NP ) into PE multilayers preassembled on indium tin oxide (ITO) electrodes. Quartz crystal microgravimetry (QCM) and UV−vis spectroscopy showed that via this infiltration method, composite films with densely packed DMAP−Au NP were obtained. Electrochemical experiments revealed that the presence of gold nanoparticles in the PE multilayers could significantly improve the electron-transfer characteristics of the films, which showed high electrocatalytic activity to the oxidation of nitric oxide (NO). The sensitivity of the composite films for measuring NO could be further tailored by controlling the gold nanoparticle loading in the film.

The effective implantation of conductive and charge storage materials into flexible frames has been strongly demanded for the development of flexible supercapacitors. Here, we introduce metallic cellulose paper-based supercapacitor electrodes with excellent energy storage performance by minimizing the contact resistance between neighboring metal and/or metal oxide nanoparticles using an assembly approach, called ligand-mediated layer-by-layer assembly. This approach can convert the insulating paper to the highly porous metallic paper with large surface areas that can function as current collectors and nanoparticle reservoirs for supercapacitor electrodes. Moreover, we demonstrate that the alternating structure design of the metal and pseudocapacitive nanoparticles on the metallic papers can remarkably increase the areal capacitance and rate capability with a notable decrease in the internal resistance …

We describe a versatile approach for preparing flash memory devices composed of polyelectrolyte/gold nanoparticle multilayer films. Anionic gold nanoparticles were used as the charge storage elements, and poly(allylamine)/poly(styrenesulfonate) multilayers deposited onto hafnium oxide (HfO 2 )-coated silicon substrates formed the insulating layers. The top contact was formed by depositing HfO 2 and platinum. In this study, we investigated the effect of increasing the number of polyelectrolyte and gold nanoparticle layers on memory performance, including the size of the memory window (the critical voltage difference between the ‘programmed’ and ‘erased’ states of the devices) and programming speed. We observed a maximum memory window of about 1.8 V, with a stored electron density of 4.2 × 10 12 cm −2 in the gold nanoparticle layers, when the devices consist of three polyelectrolyte/gold nanoparticle …

We introduce a novel and versatile approach for preparing self-assembled nanoporous multilayered films with tunable optical properties. Protonated polystyrene- block -poly(4-vinylpyridine) (PS- b -P4VP) and anionic polystyrene- block -poly(acrylic acid) (PS- b -PAA) block copolymer micelles (BCM) were used as building blocks for the layer-by-layer assembly of BCM multilayer films. BCM film growth is governed by electrostatic and hydrogen-bonding interactions between the opposite BCMs. Both film porosity and film thickness are dependent upon the charge density of the micelles, with the porosity of the film controlled by the solution pH and the molecular weight ( M w ) of the constituents. PS 7K - b -P4VP 28K /PS 2K - b -PAA 8K films prepared at pH 4 (for PS 7K - b -P4VP 28K ) and pH 6 (for PS 2K - b -PAA 8K ) are highly nanoporous and antireflective. In contrast, PS 7K - b -P4VP 28K /PS 2K - b -PAA 8K films assembled at pH 4/4 show …

Electrical communication between an enzyme and an electrode is one of the most important factors in determining the performance of biofuel cells. Here, we introduce a glucose oxidase-coated metallic cotton fiber-based hybrid biofuel cell with efficient electrical communication between the anodic enzyme and the conductive support. Gold nanoparticles are layer-by-layer assembled with small organic linkers onto cotton fibers to form metallic cotton fibers with extremely high conductivity (>2.1×10 4 S cm −1 ), and are used as an enzyme-free cathode as well as a conductive support for the enzymatic anode. For preparation of the anode, the glucose oxidase is sequentially layer-by-layer-assembled with the same linkers onto the metallic cotton fibers. The resulting biofuel cells exhibit a remarkable power density of 3.7 mW cm −2 , significantly outperforming conventional biofuel cells. Our strategy to promote charge …

We investigate the operational instability of quantum dot (QD)-based light-emitting diodes (QLEDs). Spectroscopic analysis on the QD emissive layer within devices in chorus with the optoelectronic and electrical characteristics of devices discloses that the device efficiency of QLEDs under operation is indeed deteriorated by two main mechanisms. The first is the luminance efficiency drop of the QD emissive layer in the running devices owing to the accumulation of excess electrons in the QDs, which escalates the possibility of nonradiative Auger recombination processes in the QDs. The other is the electron leakage toward hole transport layers (HTLs) that accompanies irreversible physical damage to the HTL by creating nonradiative recombination centers. These processes are distinguishable in terms of the time scale and the reversibility, but both stem from a single origin, the discrepancy between electron versus …

Thick inorganic shells endow colloidal nanocrystals (NCs) with enhanced photochemical stability and suppression of photoluminescence intermittency (also known as blinking). However, the progress of using thick-shell heterostructure NCs in applications has been limited due to the low photoluminescence quantum yield (PL QY ≤ 60%) at room temperature. Here, we demonstrate thick-shell NCs with CdS/CdSe/CdS seed/spherical quantum well/shell (SQW) geometry that exhibit near-unity PL QY at room temperature and suppression of blinking. In SQW NCs, the lattice mismatch is diminished between the emissive CdSe layer and the surrounding CdS layers as a result of coherent strain, which suppresses the formation of misfit defects and consequently permits ∼100% PL QY for SQW NCs with a thick CdS shell (≥5 nm). High PL QY of thick-shell SQW NCs is preserved even in concentrated dispersion and in …

We present a new strategy to strongly and effectively immobilize silver nanoparticles (AgNPs) on polyamide thin film composite membranes to endow antibacterial activity. This method relies on the immobilization of relatively large silica particles (SiO 2 , ~400 nm in diameter), where AgNPs of ~30 nm in diameter are tightly and densely bound (AgNP@SiO 2 ), on the membrane surface using cysteamine as a covalent linker. The formation of multiple Ag–S chemical bonds between a “bumpy” AgNP@SiO 2 and the rough membrane surface provides a great leaching stability of AgNPs and AgNP@SiO 2 . AgNP@SiO 2 particles were well distributed over the entire membrane surface without severe aggregation. The surface coverage of the membrane by AgNP@SiO 2 was tuned by adjusting the deposition time and AgNP@SiO 2 particle concentration. The AgNP@SiO 2 -immobilized membrane showed excellent antibacterial …

We introduce a novel, robust, cost-effective, and scalable approach for the preparation of a large-area force-assembled triboelectric nanogenerator (FTENG), which allows a stable and high electric output under a wide range of humidity conditions through its dual-sized morphology (i.e., microstructures and nanostructures). In this study, hexagonally packed colloidal arrays prepared by a force assembly approach rather than by conventional self-assembly were used as a mold for a triboelectric poly(dimethylsiloxane) (PDMS) replica with desired pattern shapes (intaglio and embossed structures) and sizes. The morphological size of the PDMS films was determined by the diameter of the force-assembled colloids. The electrical output performance of FTENGs composed of electrodes and a PDMS film increased substantially as the size of the micropores (for intaglio-structured PDMS) or embossed features (for …

We examine the interactions between gold nanoparticles stabilized by the 4-(dimethylamino)pyridine (DMAP−Au NP ) and various polyelectrolytes (PEs), both in solution and in layer-by-layer (LbL) assembled multilayer films. UV−vis spectrophotometry studies showed that the plasmon absorption band of the DMAP−Au NP in solution red-shifts and broadens in the presence of poly(sodium 4-styrenesulfonate) (PSS), poly(allylamine hydrochloride) (PAH), or poly(ethyleneimine) (PEI). This suggests that the polyanion PSS electrostatically associates with the nanoparticles, while PAH and PEI bond through the amine functionalities, despite having the same charge as the nanoparticles. In contrast, the addition of poly(diallyldimethylammonium chloride) (PDADMAC) to a DMAP−Au NP dispersion has no influence on either the peak position or shape of the absorption spectrum of the nanoparticles, indicating no interaction …

Deconstructible polymeric films have potential applications in the areas of drug delivery, patterning, and membrane science. Here, we report on the preparation of heterogeneous multilayer films comprising alternate stacks of hydrogen-bonded (poly(4-vinylpyridine) (P4VP) and poly(acrylic acid, sodium salt) (PAA)) and electrostatically formed (poly(sodium 4-styrenesulfonate) (PSS) and poly(allylamine hydrochloride) (PAH)) layers via the layer-by-layer (LbL) assembly technique. We demonstrate that these polymeric films are highly pH sensitive toward deconstruction, with the onset of film deconstruction occurring at about pH 7.4. The pH-induced film deconstruction characteristics (total film loss and rate of deconstruction) depend on the number of hydrogen-bonded layers (PAA/P4VP) n /PAA inserted between stacks of PAH/PSS layers. Films containing a single hydrogen-bonded trilayer stack ( n = 1) confined …

Polyelectrolyte multilayer thin films were prepared via the alternate deposition of poly(allylamine hydrochloride) (PAH) and a blend of poly(acrylic acid) (PAA) and poly(styrenesulfonate) (PSS). When the pH of the blend solution was 3.5, the presence of PAA in this solution significantly increased the total film thickness. With only 10 wt % PAA in the blend adsorption solution, a large increase in film thickness was observed (92 nm cf. 18 nm). It was also demonstrated that the total amount of PSS adsorbed was enhanced by the presence of PAA in the blend solution, showing that the blend solution composition influenced that of the multilayer films. Thin films prepared with nanoblended layers also showed improved pH stability, because they exhibited reduced film rearrangement upon exposure to acidic conditions (pH = 2.5).

For the practical application of dye-sensitized solar cells (DSSCs), it is important to replace the conventional organic solvents based electrolyte with environmentally friendly and stable ones, due to the toxicity and leakage problems. Here we report a noble water-based thixotropic polymer gel electrolyte containing xanthan gum, which satisfies both the environmentally friendliness and stability against leakage and water intrusion. For application in DSSCs, it was possible to infiltrate the prepared electrolyte into the mesoporous TiO 2 electrode at the fluidic state, resulting in sufficient penetration. As a result, this electrolyte exhibited similar conversion efficiency (4.78% at 100 mW cm –2 ) and an enhanced long-term stability compared to a water-based liquid electrolyte. The effects of water on the photovoltaic properties were examined elaborately from the cyclic voltammetry curves and impedance spectra. Despite the …

Many naturally occurring surfaces such as lotus leaves and butterfly wings exhibit the remarkable self-cleaning effect. The hydrophobicity of these surfaces arises from their hierarchical surface roughness at two different length scales (specifically, at ca. 3–10 μm and about 100 nm length scales).[1–11] Artificial superhydrophobic surfaces have attracted considerable attention owing to their potential applications for fabricating glass covers for solar cells, eye glasses, and waterproof clothes. Much research effort at preparing these synthetic surfaces has focused on film structures exhibiting roughness at two different length scales. For example, superhydrophobic surfaces showing water-droplet contact angles greater than 150 have been prepared from porous multilayer films,[11] binary colloidal assemblies,[12] raspberry-like colloidal films,[13] sodium silicate multilayer-coated colloidal films,[14] 2D nanopillar arrays,[15 …

Polymer hydrogels are used in diverse biomedical applications including drug delivery and tissue engineering. Among different chemical linkages, the natural and reversible thiol–disulfide interconversion is extensively explored to stabilize hydrogels. The creation of macro‐, micro‐, and nanoscale disulfide‐stabilized hydrogels commonly relies on the use of oxidizing agents that may have a detrimental effect on encapsulated cargo. Herein an oxidization‐free approach to create disulfide‐stabilized polymer hydrogels via a thiol–disulfide exchange reaction is reported. In particular, thiolated poly(methacrylic acid) is used and the conditions of polymer crosslinking in solution and on colloidal porous and solid microparticles are established. In the latter case, removal of the core particles yields stable, hollow, disulfide‐crosslinked hydrogel capsules. Further, a procedure is developed to achieve efficient disulfide …

We report on a new technique that incorporates silver nanoparticles (AgNPs) onto polyamide (PA) thin film composite (TFC) reverse osmosis membranes via arc plasma deposition (APD) to impart antibacterial properties and simultaneously improve membrane performance. APD allows the direct deposition of AgNPs under vacuum dry condition, overcoming the drawbacks of the conventional wet-chemical methods. AgNPs (~7.6 nm in diameter) were uniformly distributed without aggregation throughout the PA selective layer with some partially implanted into the PA matrix. Ag loading could be tuned by simply adjusting the number of APD purse shots. The deposited AgNPs exhibited good leaching stability, presumably due to the strong Ag-PA chemical interaction and partially buried AgNP morphology. The resulting Ag-incorporated TFC (Ag-TFC) membrane showed the strong and long-lasting antibacterial …

Electrochemical properties of redox proteins, which can cause the reversible changes in the resistance according to their redox reactions in solution, are of the fundamental and practical importance in bioelectrochemical applications. These redox properties often depend on the chemical activity of transition metal ions as cofactors within the active sites of proteins. Here, we demonstrate for the first time that the reversible resistance changes in dried protein films based on ferritin nanoparticles can be caused by the externally applied voltage as a result of charge trap/release of Fe III /Fe II redox couples. We also show that one ferritin nanoparticle of about 12 nm size can be operated as a nanoscale-memory device, and furthermore the layer-by-layer assembled protein multilayer devices can be extended to bioinspired electronics with adjustable memory performance via molecular level manipulation.

For the development of wearable electronics, the replacement of rigid, metallic components with fully elastomeric materials is crucial. However, current elastomeric electrodes suffer from low electrical conductivity and poor electrical stability. Herein, a metal‐like conductive elastomer with exceptional electrical performance and stability is presented, which is used to fabricate fully elastomeric electronics. The key feature of this material is its wrinkled structure, which is induced by in situ cooperation of solvent swelling and densely packed nanoparticle assembly. Specifically, layer‐by‐layer assembly of metal nanoparticles and small‐molecule linkers on elastomers generates the hierarchical wrinkled elastomer. The elastomer demonstrates remarkable electrical conductivity (170 000 and 11 000 S cm −1 at 0% and 100% strain, respectively), outperforming previously reported elastomeric electrodes based on …

Department of Chemical & Biological Engineering

KU-KIST Graduate School of Converging Science and Technology

Soft Hybrid Materials Research Center, Advanced Materials Research Division

Professor

UFLAB

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연구실 소개

연구실 키워드

알럼나이가 간 회사

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Recent Advances in Lithium Metal Anodes with Liquid Electrolytes: Interfacial Interaction‐Driven Assembly for Dendrite Suppression and Long‐Term Stability

Micro‐Corrugated Hydrogel Electrodes for High‐Performance Biofuel Cells via Capillary Force and Ligand Exchange‐Induced Metal Nanoparticle Assembly

Unlocking high-efficiency energy storage and conversion with biocompatible electrodes: the key role of interfacial interaction assembly and structural design

연구실 보유 특허

대학별 입시끈

우리 연구실 모집

교수님 소개

조진한

연구실 키워드

알럼나이가 간 회사

연구실 지원 방법

대우 조건

연도별 논문 인용수

저널 & 학회 논문 출판 수

연구실 논문 목록

Recent Advances in Lithium Metal Anodes with Liquid Electrolytes: Interfacial Interaction‐Driven Assembly for Dendrite Suppression and Long‐Term Stability

Micro‐Corrugated Hydrogel Electrodes for High‐Performance Biofuel Cells via Capillary Force and Ligand Exchange‐Induced Metal Nanoparticle Assembly

Unlocking high-efficiency energy storage and conversion with biocompatible electrodes: the key role of interfacial interaction assembly and structural design

연구실 보유 특허

최근 3년간 연구실적 높은 연구실

대학별 입시끈

우리 연구실 모집