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Kim DH, Akbar ZA, Malik YT, Jeon JW, Jang SY. Author Correction: Self-healable polymer complex with a giant ionic thermoelectric effect. Nat Commun 2024; 15:570. [PMID: 38233404 PMCID: PMC10794686 DOI: 10.1038/s41467-024-44944-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024] Open
Affiliation(s)
- Dong-Hu Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Zico Alaia Akbar
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Yoga Trianzar Malik
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 136-702, Republic of Korea
| | - Ju-Won Jeon
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 136-702, Republic of Korea.
| | - Sung-Yeon Jang
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
- Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
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Kim DH, Akbar ZA, Malik YT, Jeon JW, Jang SY. Self-healable polymer complex with a giant ionic thermoelectric effect. Nat Commun 2023; 14:3246. [PMID: 37277360 PMCID: PMC10241813 DOI: 10.1038/s41467-023-38830-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 05/17/2023] [Indexed: 06/07/2023] Open
Abstract
In this study, we develop a stretchable/self-healable polymer, PEDOT:PAAMPSA:PA, with remarkably high ionic thermoelectric (iTE) properties: an ionic figure-of-merit of 12.3 at 70% relative humidity (RH). The iTE properties of PEDOT:PAAMPSA:PA are optimized by controlling the ion carrier concentration, ion diffusion coefficient, and Eastman entropy, and high stretchability and self-healing ability are achieved based on the dynamic interactions between the components. Moreover, the iTE properties are retained under repeated mechanical stress (30 cycles of self-healing and 50 cycles of stretching). An ionic thermoelectric capacitor (ITEC) device using PEDOT:PAAMPSA:PA achieves a maximum power output and energy density of 4.59 μW‧m-2 and 1.95 mJ‧m-2, respectively, at a load resistance of 10 KΩ, and a 9-pair ITEC module produces a voltage output of 0.37 V‧K-1 with a maximum power output of 0.21 μW‧m-2 and energy density of 0.35 mJ‧m-2 at 80% RH, demonstrating the potential for a self-powering source.
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Affiliation(s)
- Dong-Hu Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Zico Alaia Akbar
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Yoga Trianzar Malik
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 136-702, Republic of Korea
| | - Ju-Won Jeon
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 136-702, Republic of Korea.
| | - Sung-Yeon Jang
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
- Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
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Malik YT, Shin SY, Jang JI, Kim HM, Cho S, Do YR, Jeon JW. Self-Repairable Silicon Anodes Using a Multifunctional Binder for High-Performance Lithium-Ion Batteries. Small 2023; 19:e2206141. [PMID: 36538734 DOI: 10.1002/smll.202206141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/15/2022] [Indexed: 06/17/2023]
Abstract
Despite of extremely high theoretical capacity of Si (3579 mAh g-1 ), Si anodes suffer from pulverization and delamination of the electrodes induced by large volume change during charge/discharge cycles. To address those issues, herein, self-healable and highly stretchable multifunctional binders, polydioxythiophene:polyacrylic acid:phytic acid (PEDOT:PAA: PA, PDPP) that provide Si anodes with self-healability and excellent structural integrity is designed. By utilizing the self-healing binder, Si anodes self-repair cracks and damages of Si anodes generated during cycling. For the first time, it is demonstrated that Si anodes autonomously self-heal artificially created cracks in electrolytes under practical battery operating conditions. Consequently, this self-healable Si anode can still deliver a reversible capacity of 2312 mAh g-1 after 100 cycles with remarkable initial Coulombic efficiency of 94%, which is superior to other reported Si anodes. Moreover, the self-healing binder possesses enhanced Li-ion diffusivity with additional electronic conductivity, providing excellent rate capability with a capacity of 2084 mAh g-1 at a very high C-rate of 5 C.
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Affiliation(s)
- Yoga Trianzar Malik
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707, South Korea
| | - Seo-Yeon Shin
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707, South Korea
| | - Jin Il Jang
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707, South Korea
| | - Hyung Min Kim
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707, South Korea
| | - Sangho Cho
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Division of Nano & Information Technology, KIST School, Korea University of Science and Technology, Seoul, 02792, South Korea
| | - Young Rag Do
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707, South Korea
| | - Ju-Won Jeon
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707, South Korea
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Akbar ZA, Malik YT, Kim DH, Cho S, Jang SY, Jeon JW. Self-Healable and Stretchable Ionic-Liquid-Based Thermoelectric Composites with High Ionic Seebeck Coefficient. Small 2022; 18:e2106937. [PMID: 35344267 DOI: 10.1002/smll.202106937] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/07/2022] [Indexed: 06/14/2023]
Abstract
The advancement of wearable electronics, particularly self-powered wearable electronic devices, necessitates the development of efficient energy conversion technologies with flexible mechanical properties. Recently, ionic thermoelectric (TE) materials have attracted great attention because of their enormous thermopower, which can operate capacitors or supercapacitors by harvesting low-grade heat. This study presents self-healable, stretchable, and flexible ionic TE composites comprising an ionic liquid (IL), 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMIM:OTf); a polymer matrix, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP); and a fluoro-surfactant (FS). The self-healability of the IL-based composites originates from dynamic ion-dipole interactions between the IL, the PVDF-HFP, and the FS. The composites demonstrate excellent ionic TE properties with an ionic Seebeck coefficient (Si ) of ≈38.3 mV K-1 and an ionic figure of merit of ZTi = 2.34 at 90% relative humidity, which are higher than the values reported for other IL-based TE materials. The IL-based ionic TE composites developed in this study can maintain excellent ionic TE properties under harsh conditions, including severe strain (75%) and multiple cutting-healing cycles.
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Affiliation(s)
- Zico Alaia Akbar
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Yoga Trianzar Malik
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 136-702, Republic of Korea
| | - Dong-Hu Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Sangho Cho
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
- Division of Nano & Information Technology, KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea
| | - Sung-Yeon Jang
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Ju-Won Jeon
- Department of Chemistry, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 136-702, Republic of Korea
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Firda PBD, Malik YT, Oh JK, Wujcik EK, Jeon JW. Enhanced Chemical and Electrochemical Stability of Polyaniline-Based Layer-by-Layer Films. Polymers (Basel) 2021; 13:polym13172992. [PMID: 34503032 PMCID: PMC8433781 DOI: 10.3390/polym13172992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/28/2021] [Accepted: 08/30/2021] [Indexed: 11/16/2022] Open
Abstract
Polyaniline (PANI) has been widely used as an electroactive material in various applications including sensors, electrochromic devices, solar cells, electroluminescence, and electrochemical energy storage, owing to PANI’s unique redox properties. However, the chemical and electrochemical stability of PANI-based materials is not sufficiently high to maintain the performance of devices under many practical applications. Herein, we report a route to enhancing the chemical and electrochemical stability of PANI through layer-by-layer (LbL) assembly. PANI was assembled with different types of polyelectrolytes, and a comparative study between three different PANI-based layer-by-layer (LbL) films is presented here. Polyacids of different acidity and molecular structure, i.e., poly(acrylic acid) (PAA), polystyrene sulfonate (PSS), and tannic acid (TA), were used. The effect of polyacids’ acidity on film growth, conductivity, and chemical and electrochemical stability of PANI was investigated. The results showed that the film growth of the LbL system depended on the acidic strength of the polyacids. All LbL films exhibited improved chemical and electrochemical stability compared to PANI films. The doping level of PANI was strongly affected by the type of dopants, resulting in different chemical and electrochemical properties; the strongest polyacid (PSS) can provide the highest conductivity and chemical stability of conductive PANI. However, the electrochemical stability of PANI/PAA was found to be better than all the other films.
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Affiliation(s)
- Putri Bintang Dea Firda
- Department of Chemistry, Kookmin University, 77, Jeongneung-ro, Seongbuk-gu, Seoul 136-702, Korea; (P.B.D.F.); (Y.T.M.)
| | - Yoga Trianzar Malik
- Department of Chemistry, Kookmin University, 77, Jeongneung-ro, Seongbuk-gu, Seoul 136-702, Korea; (P.B.D.F.); (Y.T.M.)
| | - Jun Kyun Oh
- Department of Polymer Science and Engineering, Dankook University, 152 Jukjeon-ro, Suji-gu, Yongin-si 16890, Korea;
| | - Evan K. Wujcik
- Materials Engineering and Nanosensor [MEAN] Laboratory, Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA;
| | - Ju-Won Jeon
- Department of Chemistry, Kookmin University, 77, Jeongneung-ro, Seongbuk-gu, Seoul 136-702, Korea; (P.B.D.F.); (Y.T.M.)
- Correspondence:
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Lee MJ, Yeom J, Choi JH, Shin JH, Kim TH, Jeon JW, Na JG, Shin K, Oh BK. Pump-Free Glass-Based Capillary Microfluidic Immuno-Assay Chip for Electrochemical Detection of Prostate-Specific Antigen. J Nanosci Nanotechnol 2020; 20:4629-4633. [PMID: 32126630 DOI: 10.1166/jnn.2020.17831] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Immuno-assay is one of diagnostic methods that usually measures biomarkers associated with cancers. However, this method is complex and take a long time to analyze. To overcome these disadvantages, many immuno-sensing chips have been designed and developed. However, these devices still require an external pump or electrical source. In this study, our group fabricated a capillary microfluidic device using glass and adhesive polyethylene terephthalate (PET) film, which were designed by simply patterning and cutting to make the microfluidic capillary channels. Using capillary force alone, glass microfluidic chip can control the speed of fluid-flow and the flow sequence by adjusting the width of the channel and design. In addition, each flow can push out other flow without mixing. The glass-based capillary microfluidic chip (GCMC) can automatically perform immunoassay in regular order without external devices and it provide an electrochemical signal analysis in an average of 2 min. The concentration of the prostate-specific antigen (PSA), a biomarker of prostate cancer, was measured by cyclic voltammetry (CV). In conclusion, GCMC can detect between a range of 100 pg/ml to 1 μg/ml of PSA and provide high selectivity to PSA.
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Affiliation(s)
- Myeong Jun Lee
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
| | - Jina Yeom
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
| | - Jin-Ha Choi
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
| | - Jeong Hyeop Shin
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
| | - Tae Hwan Kim
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
| | - Ju-Won Jeon
- Department of Applied Chemistry, Kookmin University, Seoul 02707, Korea
| | - Jeong-Geol Na
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea
| | - Byung-Keun Oh
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
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Jeon JW, Biswas MC, Patton CL, Wujcik EK. Water-processable, sprayable LiFePO4/graphene hybrid cathodes for high-power lithium ion batteries. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.12.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Lee MJ, Lee ES, Kim TH, Jeon JW, Kim Y, Oh BK. Detection of thioredoxin-1 using ultra-sensitive ELISA with enzyme-encapsulated human serum albumin nanoparticle. Nano Converg 2019; 6:37. [PMID: 31814041 PMCID: PMC6900377 DOI: 10.1186/s40580-019-0210-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
Many methods for early diagnosis of the disease use biomarker tests, which measure indicators of biological state in body fluids or blood. However, a limitation of these methods is their low sensitivity to biomarkers. In this study, human serum albumin (HSA) based nanoparticles capable of encapsulating excess horseradish peroxidase (HRP) are synthesized and applied to the development of enzyme-linked immunosorbent assay (ELISA) kit with ultra-high sensitivity. The size of the nanoparticles and the amount of encapsulated enzyme are controlled by varying the synthesis conditions of pH and protein concentration, and the surface of the nanoparticles is modified with protein A (proA) to immobilize antibodies to the nanoparticles by self-assembly. Using the synthesized nanoparticles, the biomarker of breast cancer, thioredoxin-1, can be measured in the range of 10 fM to 100 pM by direct sandwich ELISA, which is 105 times more sensitive than conventional methods.
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Affiliation(s)
- Myeong-Jun Lee
- Department of Chemical & Biomolecular Engineering, Sogang University, Mapo-Gu, Seoul, 04170, South Korea
| | - Eun-Sol Lee
- Department of Chemical & Biomolecular Engineering, Sogang University, Mapo-Gu, Seoul, 04170, South Korea
| | - Tae-Hwan Kim
- Department of Chemical & Biomolecular Engineering, Sogang University, Mapo-Gu, Seoul, 04170, South Korea
| | - Ju-Won Jeon
- Department of Applied Chemistry, Kookmin University, Seoungbuk-Gu, Seoul, 02707, South Korea
| | - YongTae Kim
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Byung-Keun Oh
- Department of Chemical & Biomolecular Engineering, Sogang University, Mapo-Gu, Seoul, 04170, South Korea.
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Lu Y, Liu Z, Yan H, Peng Q, Wang R, Barkey ME, Jeon JW, Wujcik EK. Ultrastretchable Conductive Polymer Complex as a Strain Sensor with a Repeatable Autonomous Self-Healing Ability. ACS Appl Mater Interfaces 2019; 11:20453-20464. [PMID: 31095374 DOI: 10.1021/acsami.9b05464] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Wearable strain sensors are essential for the realization of applications in the broad fields of remote healthcare monitoring, soft robots, and immersive gaming, among many others. These flexible sensors should be comfortably adhered to the skin and capable of monitoring human motions with high accuracy, as well as exhibiting excellent durability. However, it is challenging to develop electronic materials that possess the properties of skin-compliant, elastic, stretchable, and self-healable. This work demonstrates a new regenerative polymer complex composed of poly(2-acrylamido-2-methyl-1-propanesulfonic acid), polyaniline, and phytic acid as a skin-like electronic material. It exhibits ultrahigh stretchability (1935%), repeatable autonomous self-healing ability (repeating healing efficiency >98%), quadratic response to strain ( R2 > 0.9998), and linear response to flexion bending ( R2 > 0.9994), outperforming current reported wearable strain sensors. The deprotonated polyelectrolyte, multivalent anion, and doped conductive polymer, under ambient conditions, synergistically construct a regenerative dynamic network of polymer complex cross-linked by hydrogen bonds and electrostatic interactions, which enables ultrahigh stretchability and repeatable self-healing. Sensitive strain-responsive geometric and piezoresistive mechanisms of the material owing to the homogeneous and viscoelastic nature provide excellent linear responses to omnidirectional tensile strain and bending deformations. Furthermore, this material is scalable and simple to process in an environmentally friendly manner, paving the way for the next-generation flexible electronics.
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Affiliation(s)
| | | | | | | | | | | | - Ju-Won Jeon
- Department of Applied Chemistry , Kookmin University , Seoul 02701 , Republic of Korea
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Lu Y, Biswas MC, Guo Z, Jeon JW, Wujcik EK. Recent developments in bio-monitoring via advanced polymer nanocomposite-based wearable strain sensors. Biosens Bioelectron 2018; 123:167-177. [PMID: 30174272 DOI: 10.1016/j.bios.2018.08.037] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/15/2018] [Accepted: 08/16/2018] [Indexed: 11/26/2022]
Abstract
Recent years, an explosive growth of wearable technology has been witnessed. A highly stretchable and sensitive wearable strain sensor which can monitor motions is in great demand in various fields such as healthcare, robotic systems, prosthetics, visual realities, professional sports, entertainments, etc. An ideal strain sensor should be highly stretchable, sensitive, and robust enough for long-term use without degradation in performance. This review focuses on recent advances in polymer nanocomposite based wearable strain sensors. With the merits of highly stretchable polymeric matrix and excellent electrical conductivity of nanomaterials, polymer nanocomposite based strain sensors are successfully developed with superior performance. Unlike conventional strain gauge, new sensing mechanisms include disconnection, crack propagation, and tunneling effects leading to drastically resistance change play an important role. A rational choice of materials selection and structure design are required to achieve high sensitivity and stretchability. Lastly, prospects and challenges are discussed for future polymer nanocomposite based wearable strain sensor and their potential applications.
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Affiliation(s)
- Yang Lu
- Materials Engineering and Nanosensor [MEAN] Laboratory, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA
| | - Manik Chandra Biswas
- Jeon Research Group, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA; College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Ju-Won Jeon
- Jeon Research Group, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA; Department of Applied Chemistry, Kookmin University, Seoul, Republic of Korea.
| | - Evan K Wujcik
- Materials Engineering and Nanosensor [MEAN] Laboratory, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA.
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Ramos Ferrer P, Mace A, Thomas SN, Jeon JW. Nanostructured porous graphene and its composites for energy storage applications. Nano Converg 2017; 4:29. [PMID: 29152447 PMCID: PMC5661008 DOI: 10.1186/s40580-017-0123-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/14/2017] [Indexed: 05/10/2023]
Abstract
Graphene, 2D atomic-layer of sp2 carbon, has attracted a great deal of interest for use in solar cells, LEDs, electronic skin, touchscreens, energy storage devices, and microelectronics. This is due to excellent properties of graphene, such as a high theoretical surface area, electrical conductivity, and mechanical strength. The fundamental structure of graphene is also manipulatable, allowing for the formation of an even more extraordinary material, porous graphene. Porous graphene structures can be categorized as microporous, mesoporous, or macroporous depending on the pore size, all with their own unique advantages. These characteristics of graphene, which are further explained in this paper, may be the key to greatly improving a wide range of applications in energy storage systems.
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Affiliation(s)
- Pablo Ramos Ferrer
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
| | - Annsley Mace
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
| | - Samantha N. Thomas
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
| | - Ju-Won Jeon
- Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL 35487 USA
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Ledin PA, Jeon JW, Geldmeier JA, Ponder JF, Mahmoud MA, El-Sayed M, Reynolds JR, Tsukruk VV. Design of Hybrid Electrochromic Materials with Large Electrical Modulation of Plasmonic Resonances. ACS Appl Mater Interfaces 2016; 8:13064-13075. [PMID: 27145297 DOI: 10.1021/acsami.6b02953] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a rational approach to fabricating plasmonically active hybrid polymer-metal nanomaterials with electrochemical tunability of the localized surface plasmon resonances (LSPRs) of noble metal nanostructures embedded in an electroactive polymer matrix. The key requirement for being able to significantly modulate the LSPR band position is a close overlap between the refractive index change [Δn(λ)] of a stimuli-responsive polymeric matrix and the intrinsic LSPR bands. For this purpose, gold nanorods with a controlled aspect ratio, synthesized to provide high refractive index sensitivity while maintaining good oxidative stability, were combined with a solution-processable electroactive and electrochromic polymer (ECP): alkoxy-substituted poly(3,4-propylenedioxythiophene) [PProDOT(CH2OEtHx)2]. Spectral characteristics of the ECP, in particular the Δn(λ) variation, were evaluated as the material was switched between oxidized and reduced states. We fabricated ultrathin plasmonic electrochromic hybrid films consisting of gold nanorods and ECP that exhibited a large, stable, and reversible LSPR modulation of up to 25-30 nm with an applied electrical potential. Finite-difference time-domain (FDTD) simulations confirm a good match between the experimentally measured refractive index change in the ECP and the plasmonic response during electrochemical modulations.
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Affiliation(s)
- Petr A Ledin
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
| | - Ju-Won Jeon
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
| | - Jeffrey A Geldmeier
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
| | - James F Ponder
- School of Chemistry and Biochemistry, School of Materials Science and Engineering, Center for Organic Photonics and Electronics, and Georgia Tech Polymer Network, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Mahmoud A Mahmoud
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Mostafa El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - John R Reynolds
- School of Chemistry and Biochemistry, School of Materials Science and Engineering, Center for Organic Photonics and Electronics, and Georgia Tech Polymer Network, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Vladimir V Tsukruk
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
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Jeon JW, Kwon SR, Li F, Lutkenhaus JL. Spray-On Polyaniline/Poly(acrylic acid) Electrodes with Enhanced Electrochemical Stability. ACS Appl Mater Interfaces 2015; 7:24150-24158. [PMID: 26492360 DOI: 10.1021/acsami.5b07459] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Polyaniline (PANI)-based electrodes are promising candidates for energy storage, but their cycle life remains poor. Recent work suggests that secondary interactions may enhance polyaniline's electrochemical stability and cycle life, but evidence to date is not conclusive. Here, we investigate spray-assisted layer-by-layer assemblies containing polyaniline nanofibers (PANI NFs) or conventional PANI and poly(acrylic acid) (PAA), which provides hydrogen bonding and electrostatic interactions. This spray-on approach may be suitable for the deposition of PANI onto a variety of surfaces. The effects of PANI type, PAA pH, and PAA molecular weight on the growth behavior, conductivity, and electrochemical performance are examined. It is shown that LbL films with PANI NFs, higher molecular weight PAA, and lower PAA pH yield the thickest films, whereas the thinnest films come from conventional PANI assembled under similar conditions. Electron microscopy imaging and density measurements show that LbL films containing PANI NFs are very porous, whereas those containing conventional PANI are very dense (0.28 vs 1.33 g/cm(3), respectively). The difference in density dramatically affects the electrochemical properties in terms of capacity and long-term cycling behavior. Upon extended cycling, PANI NFs alone rapidly lose their electrochemical activity. On the other hand, PANI NF-based LbL films exhibited somewhat enhanced stability, and PANI-based LbL films were exceptionally stable, maintaining 94.7% of their capacity after 1000 cycles when cycled up to 4.2 V vs Li/Li(+). These results show that secondary interactions from PAA enhance stability, as does the selection of PANI type and the electrode's density.
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Affiliation(s)
- Ju-Won Jeon
- Artie McFerrin Department of Chemical Engineering, Texas A&M University , College Station, Texas 77843, United States
| | - Se Ra Kwon
- Artie McFerrin Department of Chemical Engineering, Texas A&M University , College Station, Texas 77843, United States
| | - Fei Li
- Artie McFerrin Department of Chemical Engineering, Texas A&M University , College Station, Texas 77843, United States
| | - Jodie L Lutkenhaus
- Artie McFerrin Department of Chemical Engineering, Texas A&M University , College Station, Texas 77843, United States
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Fu S, Zhu C, Zhou Y, Yang G, Jeon JW, Lemmon J, Du D, Nune SK, Lin Y. Metal-organic framework derived hierarchically porous nitrogen-doped carbon nanostructures as novel electrocatalyst for oxygen reduction reaction. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.08.021] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Jeon JW, Zhang L, Lutkenhaus JL, Laskar DD, Lemmon JP, Choi D, Nandasiri MI, Hashmi A, Xu J, Motkuri RK, Fernandez CA, Liu J, Tucker MP, McGrail PB, Yang B, Nune SK. Controlling porosity in lignin-derived nanoporous carbon for supercapacitor applications. ChemSusChem 2015. [PMID: 25339600 DOI: 10.1002/cssc.201403346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Low-cost renewable lignin has been used as a precursor to produce porous carbons. However, to date, it has not been easy to obtain high surface area porous carbon without activation processes or templating agents. Here, we demonstrate that low molecular weight lignin yields highly porous carbon with more graphitization through direct carbonization without additional activation processes or templating agents. We found that molecular weight and oxygen consumption during carbonization are critical factors to obtain high surface area, graphitized porous carbons. This highly porous carbon from low-cost renewable lignin sources is a good candidate for supercapacitor electrode materials.
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Affiliation(s)
- Ju-Won Jeon
- Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99354 (USA); Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, TX 77843-3122 (USA)
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16
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Jeon JW, Zhang L, Lutkenhaus JL, Laskar DD, Lemmon JP, Choi D, Nandasiri MI, Hashmi A, Xu J, Motkuri RK, Fernandez CA, Liu J, Tucker MP, McGrail PB, Yang B, Nune SK. Controlling porosity in lignin-derived nanoporous carbon for supercapacitor applications. ChemSusChem 2015; 8:428-32. [PMID: 25339600 DOI: 10.1002/cssc.201402621] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 08/11/2014] [Indexed: 05/12/2023]
Abstract
Low-cost renewable lignin has been used as a precursor to produce porous carbons. However, to date, it has not been easy to obtain high surface area porous carbon without activation processes or templating agents. Here, we demonstrate that low molecular weight lignin yields highly porous carbon with more graphitization through direct carbonization without additional activation processes or templating agents. We found that molecular weight and oxygen consumption during carbonization are critical factors to obtain high surface area, graphitized porous carbons. This highly porous carbon from low-cost renewable lignin sources is a good candidate for supercapacitor electrode materials.
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Affiliation(s)
- Ju-Won Jeon
- Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99354 (USA); Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, TX 77843-3122 (USA)
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17
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Jeon JW, Zhang L, Lutkenhaus JL, Laskar DD, Lemmon JP, Choi D, Nandasiri MI, Hashmi A, Xu J, Motkuri RK, Fernandez CA, Liu J, Tucker MP, McGrail PB, Yang B, Nune SK. Controlling porosity in lignin-derived nanoporous carbon for supercapacitor applications. ChemSusChem 2015; 8:411. [PMID: 25613577 DOI: 10.1002/cssc.201403347] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Ju-Won Jeon
- Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99354 (USA); Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, TX 77843-3122 (USA)
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18
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Abstract
Using polyaniline nanofibers and graphene oxide sheets, we demonstrate here the successful layer-by-layer (LbL) assembly of the two anisotropic nanomaterials using a water-based spray-on approach.
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Affiliation(s)
- Se Ra Kwon
- Artie McFerrin Department of Chemical Engineering
- Texas A&M University
- College Station
- United States
| | - Ju-Won Jeon
- Artie McFerrin Department of Chemical Engineering
- Texas A&M University
- College Station
- United States
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical Engineering
- Texas A&M University
- College Station
- United States
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Jeon JW, Sharma R, Meduri P, Arey BW, Schaef HT, Lutkenhaus JL, Lemmon JP, Thallapally PK, Nandasiri MI, McGrail BP, Nune SK. In situ one-step synthesis of hierarchical nitrogen-doped porous carbon for high-performance supercapacitors. ACS Appl Mater Interfaces 2014; 6:7214-22. [PMID: 24784542 DOI: 10.1021/am500339x] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A hierarchically structured nitrogen-doped porous carbon is prepared from a nitrogen-containing isoreticular metal-organic framework (IRMOF-3) using a self-sacrificial templating method. IRMOF-3 itself provides the carbon and nitrogen content as well as the porous structure. For high carbonization temperatures (950 °C), the carbonized MOF required no further purification steps, thus eliminating the need for solvents or acid. Nitrogen content and surface area are easily controlled by the carbonization temperature. The nitrogen content decreases from 7 to 3.3 at % as carbonization temperature increases from 600 to 950 °C. There is a distinct trade-off between nitrogen content, porosity, and defects in the carbon structure. Carbonized IRMOFs are evaluated as supercapacitor electrodes. For a carbonization temperature of 950 °C, the nitrogen-doped porous carbon has an exceptionally high capacitance of 239 F g(-1). In comparison, an analogous nitrogen-free carbon bears a low capacitance of 24 F g(-1), demonstrating the importance of nitrogen dopants in the charge storage process. The route is scalable in that multi-gram quantities of nitrogen-doped porous carbons are easily produced.
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Affiliation(s)
- Ju-Won Jeon
- Energy & Environment Directorate and §Fundamental Chemical Sciences Directorate Pacific Northwest National Laboratory , 902 Battelle Boulevard, Richland, Washington 99354, United States
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Mike JF, Shao L, Jeon JW, Lutkenhaus JL. Charge Storage in Decyl- and 3,6,9-Trioxadecyl-Substituted Poly(dithieno[3,2-b:2,3-d]pyrrole) Electrodes. Macromolecules 2013. [DOI: 10.1021/ma402071k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jared F. Mike
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Lin Shao
- Department of Chemical & Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Ju-Won Jeon
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Jodie L. Lutkenhaus
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
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Jeon JW, O'Neal J, Shao L, Lutkenhaus JL. Charge storage in polymer acid-doped polyaniline-based layer-by-layer electrodes. ACS Appl Mater Interfaces 2013; 5:10127-10136. [PMID: 24060459 DOI: 10.1021/am402809e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polymeric electrodes that can achieve high doping levels and store charge reversibly are desired for electrochemical energy storage because they can potentially achieve high specific capacities and energies. One such candidate is the polyaniline:poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PANI:PAAMPSA) complex, a water-processable complex obtained via template polymerization that is known to reversibly achieve high doping levels at potentials of up to 4.5 V versus Li/Li+. Here, for the first time, PANI:PAAMPSA is successfully incorporated into layer-by-layer (LbL) electrodes. This processing technique is chosen for its ability to blend species on a molecular level and its ability to conformally coat a substrate. Three different polyaniline-based LbL electrodes comprised of PANI/PAAMPSA, PANI/PANI:PAAMPSA, and linear poly(ethylenimine)/PANI:PAAMPSA are compared in terms of film growth, charge storage, and reversibility. We found that the reversibility of PANI:PAAMPSA is retained within the LbL electrodes and that the PANI/PANI:PAAMPSA electrode exhibits the best performance in terms of capacity and cycle life. These results provide general guidelines for the assembly of PANI:PAAMPSA in LbL films and also demonstrate their potential as electrochemically active components in electrodes.
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Affiliation(s)
- Ju-Won Jeon
- Artie McFerrin Department of Chemical Engineering, Texas A&M University , 3122 TAMU, College Station, Texas 77843-3122, United States
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22
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Cho C, Jeon JW, Lutkenhaus J, Zacharia NS. Electric field induced morphological transitions in polyelectrolyte multilayers. ACS Appl Mater Interfaces 2013; 5:4930-4936. [PMID: 23683121 DOI: 10.1021/am400667y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, the morphological transitions in weak polyelectrolyte (PE) multilayers (PEMs) assembled from linear poly(ethylene imine) (LPEI) and poly(acrylic acid) (PAA) upon application of an electric field were studied. Exposure to an electric field results in the creation of a porous structure, which can be ascribed to local changes in pH from the hydrolysis of water and subsequent structural rearrangements of the weak PE constituents. Depending on the duration of application of the field, the porous transition gradually develops into a range of structures and pore sizes. It was discovered that the morphological transition of the LbL films starts at the multilayer-electrode interface and propagates through the film. First an asymmetrical structure forms, consisting of microscaled pores near the electrode and nanoscaled pores near the surface in contact with the electrolyte solution. At longer application of the field the porous structures become microscaled throughout. The results revealed in this study not only demonstrate experimental feasibility for controlling variation in pore size and porosity of multilayer films but also deepens the understanding of the mechanism of the porous transition. In addition, electrical potential is used to release small molecules from the PEMs.
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Affiliation(s)
- Chungyeon Cho
- Materials Science and Engineering Program, Texas A&M University, College Station, Texas 77843, United States
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23
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Jeon DW, Jang LW, Jeon JW, Park JW, Song YH, Jeon SR, Ju JW, Baek JH, Lee IH. Improved photoluminescence efficiency in UV nanopillar light emitting diode structures by recovery of dry etching damage. J Nanosci Nanotechnol 2013; 13:3645-3649. [PMID: 23858920 DOI: 10.1166/jnn.2013.7315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this study, we have fabricated 375-nm-wavelength InGaN/AlInGaN nanopillar light emitting diodes (LED) structures on c-plane sapphire. A uniform and highly vertical nanopillar structure was fabricated using self-organized Ni/SiO2 nano-size mask by dry etching method. To minimize the dry etching damage, the samples were subjected to high temperature annealing with subsequent chemical passivation in KOH solution. Prior to annealing and passivation the UV nanopillar LEDs showed the photoluminescence (PL) efficiency about 2.5 times higher than conventional UV LED structures which is attributed to better light extraction efficiency and possibly some improvement of internal quantum efficiency due to partially relieved strain. Annealing alone further increased the PL efficiency by about 4.5 times compared to the conventional UV LEDs, while KOH passivation led to the overall PL efficiency improvement by more than 7 times. Combined results of Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) suggest that annealing decreases the number of lattice defects and relieves the strain in the surface region of the nanopillars whereas KOH treatment removes the surface oxide from nanopillar surface.
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Affiliation(s)
- Dae-Woo Jeon
- School of Advanced Materials Engineering and Research Center of Advanced Materials Development, Chonbuk National University, Jeonju 561-756, Korea
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Jeon JW, Ma Y, Mike JF, Shao L, Balbuena PB, Lutkenhaus JL. Oxidatively stable polyaniline:polyacid electrodes for electrochemical energy storage. Phys Chem Chem Phys 2013; 15:9654-62. [DOI: 10.1039/c3cp51620b] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Park JY, Koo DH, Hong CP, Lee SJ, Jeon JW, Lee SH, Yun PY, Park BS, Kim HR, Bang JW, Plaha P, Bancroft I, Lim YP. Physical mapping and microsynteny of Brassica rapa ssp. pekinensis genome corresponding to a 222 kbp gene-rich region of Arabidopsis chromosome 4 and partially duplicated on chromosome 5. Mol Genet Genomics 2005; 274:579-88. [PMID: 16283385 DOI: 10.1007/s00438-005-0041-4] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2005] [Accepted: 08/05/2005] [Indexed: 11/28/2022]
Abstract
We constructed a bacterial artificial chromosome (BAC) library, designated as KBrH, from high molecular weight genomic DNA of Brassica rapa ssp. pekinensis (Chinese cabbage). This library, which was constructed using HindIII-cleaved genomic DNA, consists of 56,592 clones with average insert size of 115 kbp. Using a partially duplicated DNA sequence of Arabidopsis, represented by 19 and 9 predicted genes on chromosome 4 and 5, respectively, and BAC clones from the KBrH library, we studied conservation and microsynteny corresponding to the Arabidopsis regions in B. rapa ssp. pekinensis. The BAC contigs assembled according to the Arabidopsis homoeologues revealed triplication and rearrangements in the Chinese cabbage. In general, collinearity of genes in the paralogous segments was maintained, but gene contents were highly variable with interstitial losses. We also used representative BAC clones, from the assembled contigs, as probes and hybridized them on mitotic (metaphase) and/or meiotic (leptotene/pachytene/metaphase I) chromosomes of Chinese cabbage using bicolor fluorescence in situ hybridization. The hybridization pattern physically identified the paralogous segments of the Arabidopsis homoeologues on B. rapa ssp. pekinensis chromosomes. The homoeologous segments corresponding to chromosome 4 of Arabidopsis were located on chromosomes 2, 8 and 7, whereas those of chromosome 5 were present on chromosomes 6, 1 and 4 of B. rapa ssp. pekinensis.
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Affiliation(s)
- J Y Park
- Department of Horticulture, Chungnam National University, Kung-Dong 220, Yusong-Gu, Daejeon 305-764, South Korea
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Cho SY, Jeon JW, Lee SH, Park SS. p67 isoform of mouse disabled 2 protein acts as a transcriptional activator during the differentiation of F9 cells. Biochem J 2000; 352 Pt 3:645-50. [PMID: 11104669 PMCID: PMC1221500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The mouse disabled 2 (mDab2) gene is a mouse homologue of the Drosophila disabled gene and is alternatively spliced to form two isoforms, p96 and p67. Although p96 has been known to regulate the Ras-Sos G-protein signal transduction pathway by interacting with Grb2, little is known about the biological function of p67. Recent studies have shown that the expression of mDab2 is markedly up-regulated during the retinoic acid (RA)-induced differentiation of F9 cells, suggesting another role for mDab2 in cell differentiation [Cho, Lee and Park (1999) Mol. Cells 9, 179-184). In the present study, we first elucidated the biological function of p67 isoform of mDab2 and identified its binding partner. Unlike p96, p67 largely resides in RA-treated F9 cell nuclei. In this system, p67 interacts with mouse androgen-receptor interacting protein 3, termed the mDab2 interacting protein, which acts as a transcriptional co-regulator. By using a fusion protein with a heterologous DNA-binding domain (GAL4), we showed that p67 had an intrinsic transcriptional activation function. These results suggest that mDab2 p67 may function as a transcriptional co-factor for certain complexes of transcriptional regulatory elements involved in the RA-induced differentiation of F9 cells.
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Affiliation(s)
- S Y Cho
- Graduate School of Biotechnology, Korea University, 1, 5-ka, Anam-dong, Sungbuk-ku, Seoul 136-701, Korea
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Lee NS, Cha SW, Hong SJ, Shin WY, Lee GT, Jeon JW, Won JH, Baick SH, Hong DS, Park HS. A case of lymphomatoid papulosis occurred simultaneously with Ki-1-positive anaplastic large cell lymphoma. Korean J Intern Med 1997; 12:84-8. [PMID: 9159045 PMCID: PMC4531975 DOI: 10.3904/kjim.1997.12.1.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Lymphomatoid papulosis (LyP) is a chronic self-healing skin eruption that is clinically benign but histologically mimics a malignant lymphoma. However, lymphomatoid papulosis with anaplastic large cell lymphoma responds poorly to medical treatments, including chemotherapies. We experienced a 60-year-old male patient with lymphomatoid papulosis occurred simultaneously with relapsed Ki-1-positive anaplastic large cell lymphoma who was treated with salvage chemotherapy but, unfortunately, failed to be rescued. We report it with a review of the literature.
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Affiliation(s)
- N S Lee
- Department of Internal Medicine, Soonchunhyang University, College of Medicine, Seoul, Korea
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Park CS, Jeon JW, Park SW, Lim GI, Jeong SH, Uh ST, Park JS, Choi DL, Jin SY, Kang CH. Nonspecific interstitial pneumonia/fibrosis: clinical manifestations, histologic and radiologic features. Korean J Intern Med 1996; 11:122-32. [PMID: 8854648 PMCID: PMC4532011 DOI: 10.3904/kjim.1996.11.2.122] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVES Customarily used classification of IPF did not satisfy a sizable group of patients with IPF that in the past had been lumped with UIP and now currently has begun to be recognized as nonspecific interstitial pneumonia/fibrosis (NIP). There are few reports about the clinical features of NIP. METHODS The pathologic slides of 66 patients having open lung biopsy (OLB) for the differential diagnosis of interstitial lung diseases (ILD) from 1984 to 1995 were reviewed. Seven cases were confirmed as NIP. The clinical record, pulmonary function tests (PFT), chest PA and HRCT were reviewed and analysed retrospectively. RESULTS Six patients with NIP were female. The median age was 56 years. Mean duration of symptoms was 4 months. Five patients had systemic flu-like symptoms, the most common respiratory symptom was gradual dyspnea. Two patients revealed a mild degree of anemia. Four cases had leukocytois of more than 10,000/mm3. ESR and CRP O.K. elevated in all measured cases. Anti-nuclear antibody (ANA) was positive in three of six patients and ds-DNA antibody was positive in one of six patients. Restrictive pattern of PFT was predominant. Diffusion capacity of carbon monoxide (DLCO) decreased markedly. In bronchoalveolar lavage (BAL), total cell counts elevated about three times of normal value. On differential counts of BAL cells, lymphocytes, neutrophils and eosinophils were higher than those of normal controls. The prominent finding of chest radiology was bilaterally patchy opacifications in parenchyme of lower lung zones. On HRCT, bilaterally patchy areas of ground-glass attenuation and/or areas of alveolar consolidation were commonly shown. The number of pathologic type was one case of group I, four cases of group II and two cases of group III. The average period from diagnosis to the last follow-up was 24.8 months. Five patients were clinically recovered to the previously well-being state. CONCLUSION Patients with NIP had different clinical features from UIP, AIP and DIP. They also had characteristic findings of radiology and their prognosis seems to be better than UIP.
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Affiliation(s)
- C S Park
- Department of Internal Medicine, Soon Chun Hyang University Hospital, Seoul, Korea
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Abstract
Granulocytic sarcoma is rare extramedullary tumor composed of myeloblasts and other granulocytic precursors. The majority of cases have been reported in association with acute myeloid leukemia (AML) or myeloproliferative disorders. Granulocytic sarcoma may occur in patients with myelodysplastic syndromes. Reports are very rare, especially in the brain. We report an unusual case of granulocytic sarcoma of the parenchyma of the brain, occurring in a patient with myelodysplastic syndrome, diagnosed by cerebro-spinal fluid cytology and magnetic resonance imaging brain scan.
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Affiliation(s)
- H S Lee
- Department of Internal Medicine, Soonchunhyang University, Seoul, Korea
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