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Overcoming Doping Challenges in Emerging Semiconductors

화학과 세미나가 이번 주 목요일 (3월 14일) 오후 4시 30분에 개최됩니다. 많은 참여 부탁드립니다. ===============================================================================제 목 : Overcoming Doping Challenges in Emerging Semiconductors 연 사 : 강기훈 교수(서울대학교 신소재공학과)일 시 : 2024년 3월 14일(목) 오후 4시 30분 장 소 : 화학관 2층 330226호실================================================================================Overcoming Doping Challenges in Emerging SemiconductorsKeehoon KangDepartment of Materials Science and Engineering, Seoul National Universitykeehoon.kang@snu.ac.krAbstractDoping has been one of the most essential methods to control charge carrier concentration in semiconductors. Excess generation of charge carriers is a key route for controlling electrical properties of semiconducting materials and typically accompanies alteration of electronic structure by the introduction of dopant impurities, both of which have played pivotal roles in making breakthroughs in inorganic microelectronic and optoelectronic devices both at research and industrial levels, especially for Si-based technology. Molecular doping is a facile and effective doping method for various semiconducting materials since it is relatively non-invasive compared to high-energy implantation of ionic impurities used in Si. However, there are main challenges remaining in fully utilising molecular doping in emerging semiconducting materials such as π-conjugated polymer semiconductors, two-dimensional materials and metal-halide perovskites due to the difficulties in preventing dopant-induced disorder effects while maintaining a high carrier mobility. This talk will introduce concepts that we have developed to minimizing the dopant-induced disorder [1, 2, 3] while mitigating current injection and doping stability issues in electronic devices [4, 5], and finally outline the future challenges remaining in the field to fully uncover the potentials. References [1] K. Kang, et. al., “2D Coherent Charge Transport in Highly Ordered Conducting Polymers Doped by Solid State Diffusion”, Nat. Mater., Vol. 15, p. 896, 2016.[2] J. Jang, et. al., “Reduced dopant-induced scattering in remote charge-transfer-doped MoS2 field-effect transistors”, Sci. Adv., Vol. 8, No. 38, p. eabn3181, 2022.[3] J. Lee, et. al., “Bulk Incorporation of Molecular Dopants into Ruddlesden–Popper Organic Metal–Halide Perovskites for Charge Transfer Doping”, Adv. Funct. Mater., 33, 38, 2302048, 2023.[4] Y. Kim, et. al., “Enhanced Charge Injection Properties of Organic Field-Effect Transistor by Molecular Implantation Doping”, Adv. Mater., Vol. 31, p. 1806697, 2019.[5] Y. Kim, et. al., “Highly Stable Contact Doping in Organic Field Effect Transistors by Dopant‐Blockade Method” Adv. Funct. Mater. (2020) Vo. 30, p. 2000058* 졸업논문 교과목 수강자 세미나 필수 참석 안내석사, 석박통합, 박사과정이 수강하는 <졸업논문연구학점 1~6>수강자는 학과에서 개최하는 목요일 정규세미나에 반드시 참석해야함.관련공지(skku.edu)https://skb.skku.edu/chem/News/notice.do?mode=view&articleNo=146936&article.offset=10&articleLimit=10)
- 2024년 3월 14일(목) 오후 4시 30분
- 330226호
- POSTED DATE : 2024-03-11
- WRITER : 화학과
- HIT : 1747
SKKU_SDU_ZZU Joint Symposium

다음 달 진행하는 SKKU_SDU_ZZU Joint Symposium 안내드립니다.많은 관심과 참여부탁드립니다. 일시 : 2024. 1. 22.(월) 9:30-18:00장소 : 화학관 2층 330226호
- 2024년 1월 22일(월)
- 330226호실
- POSTED DATE : 2023-12-27
- WRITER : 화학과
- HIT : 1729
Application of Data-Driven Analysis to Biomolecules and Drug Development

화학과 특별세미나가 오늘 (12월 18일) 오후 4시 30분에 개최됩니다. 많은 참여 부탁드립니다.===============================================================================제 목 : Application of Data-Driven Analysis to Biomolecules and Drug Development연 사 : Dr. Minjeong Cha (Genentech, Inc. South San Francisco, CA, USA (Purification, Microbiology, Virology Department))일 시 : 2023년 12월 18일(월) 오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================
- 2023년 12월 18일(월) 오후 4시 30분
- 화학관 2층 330226호실
- POSTED DATE : 2023-12-18
- WRITER : 화학과
- HIT : 1473
Towards Artificial Photosynthesis

★ 2023-2학기 마지막 세미나★이번 학기 마지막 화학과 세미나가 12월 14일(목) 오후 4시 30분에 개최됩니다. 많은 참여 부탁드립니다. ===============================================================================제 목 : Towards Artificial Photosynthesis연 사 : 안현서 교수(연세대학교 화학과)일 시 : 2023년 12월 14일(목) 오후 4시 30분장 소 : 화학관 2층 330226호실=============================================================================== Towards Artificial PhotosynthesisHyun S. AhnDepartment of Chemistry, Yonsei University,Seoul, South Korea 03722E-mail address: ahnhs@yonsei.ac.krConversion of solar energy into transportable fuels has been an important research theme in physical sciences for the last decade. Many artificial photosynthetic devices have been built with numerous iterations and enhancements, yet all fall short of the biological machinery. In the current presentation, several research avenues toward solar fuels will be explored. These include fundamental studies of charge transport chain to investigations of chemical reactions at an electrode surface. Synthetic methodologies for nanomaterial catalysts will be shared in the first part of the presentation, and energy storage strategies such as direct charge storage in next generation batteries and harvesting of photosynthetic electrons will feature in the latter half. In all, this talk will be an electrochemists view of the elemental steps in artificial photosynthesis, identification of the problems within, and endeavors in fixing them. * 졸업논문 교과목 수강자 세미나 필수 참석 안내석사, 석박통합, 박사과정이 수강하는 <졸업논문연구학점 1~6>수강자는 학과에서 개최하는 목요일 정규세미나에 반드시 참석해야함.관련공지(skku.edu)https://skb.skku.edu/chem/News/notice.do?mode=view&articleNo=146936&article.offset=10&articleLimit=10)
- 2023년 12월 14일(목)오후 4시 30분
- 330226호실
- POSTED DATE : 2023-12-01
- WRITER : 화학과
- HIT : 1460
Biomedical toolkits for advanced organoid engineering

화학과 세미나가 다음 주 목요일 (12월 7일) 오후 4시 30분에 개최됩니다. 많은 참여 부탁드립니다. ===============================================================================제 목 : Biomedical toolkits for advanced organoid engineering 연 사 : 조승우 교수(연세대학교 생명공학과) 일 시 : 2023년 12월 7일(목) 오후 4시 30분 장 소 : 화학관 2층 330226호실================================================================================ Biomedical toolkits for advanced organoid engineering Seung-Woo ChoDepartment of Biotechnology, Yonsei University Organoids have been highlighted for regenerative medicine, precision medicine, disease modeling, and drug discovery. However, current organoid culture methods have several limitations due to a lack of tissue-specific microenvironments and well-controlled dynamic culture systems, leading to immature structural and phenotypic characters and limited functionality. Therefore, we develop functional hydrogels and microfluidics for improving organoid development and functions. Combination of tissue-mimetic hydrogels and microfluidic devices with dynamic flow can successfully recapitulate in vivo-like microenvironments favorable for organoids derived from stem cells, resulting in structural and functional maturation of several types of tissue organoids including brain, intestine, heart, and liver. Accordingly, the organoids generated with our engineering platforms exhibit improved metabolic activity and drug responses which are critical for the performance of drug testing platforms. They also show enhanced regenerative efficacy upon transplantation into injured tissues. The biomedical toolkits reported herein would be able to facilitate the development of highly effective organoid platforms for tissue engineering, disease modeling, and drug discovery.* 졸업논문 교과목 수강자 세미나 필수 참석 안내석사, 석박통합, 박사과정이 수강하는 <졸업논문연구학점 1~6>수강자는 학과에서 개최하는 목요일 정규세미나에 반드시 참석해야함.관련공지(skku.edu)https://skb.skku.edu/chem/News/notice.do?mode=view&articleNo=146936&article.offset=10&articleLimit=10)
- 2023년 12월 7일(목)오후 4시 30분
- 330226호실
- POSTED DATE : 2023-12-01
- WRITER : 화학과
- HIT : 1244
Unlocking the Potential: EVs as the Next Frontier in Therapeutic Modalities

화학과 세미나가 이번 주 목요일 (11월 30일) 오후 4시 30분에 개최됩니다. 많은 참여 부탁드립니다. ===============================================================================제 목 : Unlocking the Potential: EVs as the Next Frontier in Therapeutic Modalities연 사 : 김인산 교수(KIST)일 시 : 2023년 11월 30일(목) 오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================Unlocking the Potential: EVs as the Next Frontier in Therapeutic ModalitiesIn-San Kima,baBiomedical Research Institute, Korea Institute of Science and Technology, bKU-KIST School of Converging Science and Technology, Korea University, Seoul, Koreaiskim14@kist.re.krChronic and detrimental diseases are multifaceted, varied, and influenced by numerous genes. Although their diagnoses are often based on overlapping symptoms, the underlying causes can arise from multiple distinct pathways. Addressing these multiple pathways either simultaneously or in succession poses a challenge. As chronic diseases evolve, often unpredictably, strategies to manage their progression must be adaptive.While most of the readily addressable therapeutic targets have already been tapped, what remain are the more elusive, "undruggable" targets. These harder-to-reach targets are often intracellular and cannot be engaged with just small molecules; they demand larger "keys" for regulation. However, larger molecules, like proteins, often face permeability issues, rendering them ineffective.To circumvent these challenges, I propose the use of designer exosomes as a novel therapeutic modality operating like the organelle therapy. Exosomes offer several advantages over traditional therapeutic methods, handling tasks that conventional treatments might find challenging. In the subsequent sections, I will present data supporting the potential of this innovative approach.* 졸업논문 교과목 수강자 세미나 필수 참석 안내석사, 석박통합, 박사과정이 수강하는 <졸업논문연구학점 1~6>수강자는 학과에서 개최하는 목요일 정규세미나에 반드시 참석해야함.관련공지(skku.edu)https://skb.skku.edu/chem/News/notice.do?mode=view&articleNo=146936&article.offset=10&articleLimit=10)
- 2023년 11월 30일(목)오후 4시 30분
- 330226호실
- POSTED DATE : 2023-11-27
- WRITER : 화학과
- HIT : 1541
Advancements in Chemical Enrichment and Matrix Development for Mass Spectrometric Analysis of Biomolecules

화학과 세미나가 이번 주 목요일 (11월 23일) 오후 4시 30분에 개최됩니다.많은 참여 부탁드립니다.===============================================================================일 시 : 2023년 11월 23일(목) 오후 4시 30분연 사 : 김광표 교수(경희대학교 응용화학과)제 목 : Advancements in Chemical Enrichment and Matrix Development for Mass Spectrometric Analysis of Biomolecules장 소 : 화학관 2층 330226호실===============================================================================Advancements in Chemical Enrichment and Matrix Development for Mass Spectrometric Analysis of BiomoleculesKwang Pyo Kim (Department of Applied Chemistry, Kyung Hee University)This presentation focuses on the chemical enrichment of specific post-translational modifications (PTMs) to unravel the intricacies of cellular signaling and structure with mass spectrometric techniques. Our chemical enrichment extends to the nitroproteome, phosphoproteome, and phosphatidylinositol, uncovering cellular function.The first segment addresses the targeted enrichment of nitroproteins, providing insights into the often-overlooked nitroproteome and its implications in cellular redox signaling. The investigation extends further to phosphatidylinositol, shedding light on lipid signaling and its role in cellular processes.The second part of the presentation focuses on matrix development tailored for the analysis of metabolites and phospholipids through Matrix-Assisted Laser Desorption/Ionization (MALDI) mass spectrometry. We explore innovative matrix compositions that enhance sensitivity and specificity, ensuring a comprehensive analysis of complex cellular mixtures.This interdisciplinary approach advances our understanding of the pivotal role of chemical enrichment and matrix development in expanding the capabilities of mass spectrometry for biomolecular analysis.* 졸업논문 교과목 수강자 세미나 필수 참석 안내석사, 석박통합, 박사과정이 수강하는 <졸업논문연구학점 1~6>수강자는 학과에서 개최하는 목요일 정규세미나에 반드시 참석해야함.관련공지(skku.edu)https://skb.skku.edu/chem/News/notice.do?mode=view&articleNo=146936&article.offset=10&articleLimit=10)
- 2023년 11월 23일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2023-11-21
- WRITER : 화학과
- HIT : 1442
2023 대한화학회 경기지부 추계 심포지움

이번 주 목요일(11월 16일) 화학관 1층 330118호에서 진행되는 2023 대한화학회 경기지부 추계 심포지움 안내드립니다.많은 관심과 참여 부탁드립니다.--------------------------------------------------------------[2023 대한화학회 경기지부 추계 심포지움] -일시: 11월16일(목)-세미나 장소: 성균관대학교 자연과학캠퍼스 (수원), 화학관 1층 [330118호] 13:30 - 14:00 Registration/ opening remarks (경기지부장: 윤승수 교수)14:00 - 14:50 구상호 교수 (명지대학교/ Plenary lecture)14:50 - 15:20 민선준 교수 (한양대학교 ERICA)15:20 - 15:50 신광민 교수 (성균관대학교) 15:50 - 16:20 기념촬영 & Coffee break16:20 - 16:30 성균관대학교 카이랄소재분석센터 소개 (배한용 부센터장) 16:30 - 17:00 김학원 교수 (경희대학교)17:00 - 17:30 이충환 교수 (가천대학교)17:30 - 21:00 폐회식 및 저녁식사--------------------------------------------------------------
- 2023년 11월 16일(목) 13:30
- 330118호실
- POSTED DATE : 2023-11-14
- WRITER : 화학과
- HIT : 1668
동문초청 특별 세미나

화학과 97학번 한훈 동문의 세미나가 11월 10일(금) 오후 4시 30분에 개최됩니다.관심있는 학부생들의 참여 부탁드리겠습니다.===============================================================================<화학과 특별 세미나>일 시 : 2023년 11월 10일(금) 오후 4시 30분장 소 : 화학관 1층 330126호연 사 : 한 훈 박사(삼성전자 반도체 연구소)================================================================================
- 2023년 11월 10일(금)오후 4시 30분
- 330126호실
- POSTED DATE : 2023-11-08
- WRITER : 화학과
- HIT : 1315
[Plenary Seminar] A Journey to Molecular Excitonic World

화학과 Plenary Seminar가 다음 주 목요일(11월 9일) 오후 4시 30분 , 화학관 1층 330118호실에서 개최됩니다. 많은 참여 부탁드립니다. ===============================================================================제 목 : A Journey to Molecular Excitonic World연 사 : 김동호 교수(연세대학교)일 시 : 2023년 11월 9일(목) 오후 4시 30분 장 소 : 화학관 1층 330118호실================================================================================ A Journey to Molecular Excitonic World Dongho Kim Department of Chemistry, Yonsei University, Seoul 03722, Korea Various synthetic strategies have been developed to devise a variety of artificial molecular arrays in molecular photonics because of their similarities in architecture and subunit structures to the natural photosynthetic light-harvesting complexes. For the molecular arrays to be efficient devices, they should have very regular pigment arrangements which allow a facile light energy or charge flow along the array but do not result in the alteration of individual properties of the constituent pigments leading to the formation of energy or charge sink. In these respects, understanding of photophysical properties of these macromolecular architectures is essential for the rational design of molecular devices for photovoltaic, or optoelectronic applications.Here, we have revealed that the ultrafast excitation energy migration processes in molecular arrays are strongly influenced by the electronic couplings among the constituent molecules as well as the structural rigidity of overall architectures. Our investigations have been extended to H-type aggregated perylenebisimide (PBI) and polythiophene oligomers (linear vs. cyclic). Not only intermolecular exciton couplings but intramolecular electronic structures have been investigated in a series of expanded porphyrins in conjunction with their molecular structures, the number of π-electrons (Hückel’s [4n+2] rule) as well as their conjugation pathways. Our study demonstrates a relationship between the photophysical properties such as absorption/emission properties, excited state dynamics and the aromaticity of expanded porphyrin systems. Based on these spectroscopic observations, we have found the reversal of aromaticity in the excited states of aromatic/antiaromatic expanded porphyrin congeners.[4] Detailed studies of the modulation events are expected to provide additional fruitful insight into the relationship between (anti)aromaticity and electronic structures. To the extent this proves true, it could have far-reaching practical applications that complement the advances in theoretical understanding that our studies are likely to provide.* 졸업논문 교과목 수강자 세미나 필수 참석 안내석사, 석박통합, 박사과정이 수강하는 <졸업논문연구학점 1~6>수강자는 학과에서 개최하는 목요일 정규세미나에 반드시 참석해야함.관련공지(skku.edu)https://skb.skku.edu/chem/News/notice.do?mode=view&articleNo=146936&article.offset=10&articleLimit=10)
- 2023년 11월 9일(목) 오후 4시 30분
- 330118호실
- POSTED DATE : 2023-11-02
- WRITER : 화학과
- HIT : 1862