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Bionanoscience and Bionanomaterials:

해외저명대학 교원초청 특별 세미나가 3월 30일(목) 및 4월 11일(화)에 개최됩니다.많은 참여 부탁드립니다.==========================================================================1. 강연자:　Professor Seung-Wuk Lee- Department of Bioengineering, University of California, Berkeley (2006~present)- Virus를 이용한 나노바이오 소재에 대한 세계적 권위자- American Institute for Medical and Biological Engineering's College of Fellows (2016)- One of 12 Highlights for President Obama’s US Congress report for the NSF (2014) 2. 특강 주제 및 내용:(주제) Bionanoscience and Bionanomaterials:- What is the characteristic of bionanomaterials.- How to develop bionanomaterial to solve real world problems.3. 주관: 자연과학대학 화학과 (고두현교수 재료화학1수업) 4. 일시 및 장소:-1차 오프라인강연: 2023년3월30일 오전10:20~11:50 / 화학관 330126-2차 온라인강연: 2023년4월11일 오전9:00~10:305. Zoom 참석 링크-1차:https://us02web.zoom.us/j/83698318067?pwd=VHgyQkI3NWdMdnJTTk1ydHF0VXgxQT09-2차: https://us02web.zoom.us/j/88538703319?pwd=a0lRd09veVZzYXhyU2ZDdWhrZ2JCZz09 6. 문의: (화학과 행정실) 031-290-7099* 참여학생들은 Video On, Mic Off 하여 주시기 바랍니다.
- 2023년 3월 30일(목), 4월 11일(화)
- 330126호실, zoom
- POSTED DATE : 2023-03-22
- WRITER : 화학과
- HIT : 151
Anomalous Carrier Transport Phenomena in Energy Materials: Perovskite Thin Films and Quantum Dot Solids

화학과 세미나가 이번주 목요일(3월 23일) 오후 4시 30분에 개최됩니다.많은 참여 부탁드립니다.===============================================================================제 목 : Anomalous Carrier Transport Phenomena in Energy Materials: Perovskite Thin Films and Quantum Dot Solids연 사 : 성주영 교수님(DGIST)일 시 : 2023년 3월 23일(목)오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================Anomalous Carrier Transport Phenomena in Energy Materials: Perovskite Thin Films and Quantum Dot SolidsJooyoung Sungjooyoung@dgsit.ac.krDepartment of Physics and Chemistry, DGIST, Daegu, 42988, Republic of KoreaThe functional light-driven materials often exhibit a complex morphology consisting of various grains with short and long-range order and defects stemming from imperfect chemical composition, local strain and etc. Local structural and morphological heterogeneity results in distinct carrier dynamics at different local regions of energy materials. Unfortunately, the conventional spectroscopy techniques reveal only an incomplete picture of the carrier dynamics due to the intrinsic spatially averaged nature of time-resolved techniques. In other words, true structure-function relationships in complex energy materials cannot be reliably probed using conventional time-resolved spectroscopic techniques.By utilizing time and space resolved technique, i.e., transient absorption microscopy (TAM), we were able to directly monitor local carrier dynamics of spatially heterogeneous systems. In this talk, I will briefly describe the basic operating principle of state-of-the-art ultrafast transient absorption microscopy. I will further discuss recent applications of TAM to thin film hybrid metal halide perovskites; 1) A direct monitoring of ballistic transport of non-equilibrium charge carriers in a series of MAPI perovskite thin film.1,2 2) The effect of energetic disorder in a series of MAPI perovskite thin film.3 Finally, I will present recent interesting studies on unprecedent exciton dynamics in quantum dots films; 1) The early-time super-diffusive dynamics of exciton in a series of PbS quantum dot arrays.3 2) Nonequilibrium carrier dynamics in quantum dot-in-perovskite. 4 References1. Sung, J.; Schnedermann, C.; Ni, L.; Sadhanala, A.; Chen, R. YS.; Cho, C.; Priest, L.; Lim, JM.; Kim, H.; Monserrat, B.; Kukura, P.*; Rao, A.* Nat. Phys., 2020, 16, 171-176.2. Sung, J.*; Macpherson, S.; Rao, A.* et al. J. Phys. Chem. Lett., 2020, 11, 5402-5406.3. Zhang, Z.; Sung, J.*; Toolan, D.; Han, S.; Weir, M.; Xiao, J.; Dowland, S.; Liu, M.; Ryan, A.; Jones, R.; Huang, S.; Rao, A.* Nat. Mater.2022, 21, 533-5394. Liu, M.; Verma, S. D.; Zhang, Z.; Sung, J.*; Rao, A.* Nano Lett. 2021, 21, 8945-8951 * 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 3월 23일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2023-03-20
- WRITER : 화학과
- HIT : 286
Vascularized tissue-on-a-Chip Platforms for modeling human vasculature-related diseases

화학과 세미나가 이번주 목요일(3월 16일) 오후 4시 30분에 개최됩니다.많은 참여 부탁드립니다.===============================================================================제 목 : Vascularized tissue-on-a-Chip Platforms for modeling human vasculature-related diseases연 사 : 김홍남 박사님(한국과학기술연구원)일 시 : 2023년 3월 16일(목)오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================Vascularized tissue-on-a-Chip Platforms for modeling human vasculature-related diseasesHong Nam Kim*Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea*hongnam.kim@kist.re.krAbstract Various testing models, including plastic dish-cultured cells, small animals, and large animals, have been extensively used as alternative models for humans in drug development. However, cell culture models lack physiological relevance, and animal models exhibit inherent genetic heterogeneity with humans. As a result, the efficacy of drug candidates may be exaggerated, or their toxicity underestimated. In this regard, bioengineers have developed human-organ-mimetic testing models. In this presentation, the human-organ-mimetic organ-on-a-chip model is presented with a particular focus on the vascular-tissue interaction. Vascularized tissue models can mimic the cellular composition and functional aspects of human organs, as well as the microenvironment of tissues, including flow, mechanical properties, and molecular transport. By using the vascularized tissue-on-a-chip model, various diseases can be modeled, such as blood-brain barrier (BBB)-associated diseases, cancer therapy, and infection-associated vascular disruption. Additionally, vascularized platforms can be used for transplantation purposes to facilitate rapid and effective tissue regeneration. It is envisioned that the vascularized tissue models can address the unmet needs of human-organ-specific testing platforms and thus help the drug development process. References[1] S. Seo, S. Y. Nah, K. Lee*, N. Choi*, H. N. Kim*, “Triculture model of in vitro BBB and its application to study BBB-associated chemosensitivity and drug delivery in glioblastoma”, Advanced Functional Materials, 32, 2106860 (2021). *Inside front cover[2] D. Kim, K. S. Hwang, E. U Seo, S. Seo, B. C. Lee, N. Choi, J. Choi, H. N. Kim*, "Vascularizaed lung cancer model for evaluating the promoted transport of anticancer drugs and immune cells in an engineered tumor environment", Advanced Healthcare Materials, 11, 12, 2102581 (2022). *Inside back cover[3] J. H. Kang#,*, M. Jang#, S. J. Seo, A. Choi, D. Shin, S. Seo, S. H. Lee*, H. N. Kim*, "Mechanobiological adaptation to hyperosmolarity enhances barrier function in human vascular microphysiological system", Advanced Science, advanced online publication (2023).[4] S. Bang#, D. Tahk#, Y. H. Choi#, S. Lee, J. Lim, S. -R. Lee, B. -S. Kim, H. N. Kim*, N. S. Hwang*, N. L. Jeon*, “3D Microphysiological System-Inspired Scalable Vascularized Tissue Constructs for Regenerative Medicine”, Advanced Functional Materials, 32, 2105745 (2022). *Front cover * 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 3월 16일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2023-03-14
- WRITER : 화학과
- HIT : 300
Ultrafast photoinduced dynamics of multichromophoric systems

2023 첫 세미나가 다음주 목요일(3월 9일) 오후 4시 30분에 개최됩니다.화학과 김태연 신임교수님의 세미나로 많은 참여 부탁드립니다.===============================================================================제 목 : Ultrafast photoinduced dynamics of multichromophoric systems연 사 : 김태연 교수님(성균관대학교 화학과)일 시 : 2023년 3월 9일(목)오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================Ultrafast photoinduced dynamics of multichromophoric systems김 태 연taeyeon@skku.eduDepartment of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea The functionalities of optoelectronic devices such as solar cells, photocatalysts, sensors, and organic light-emitting diodes are determined by photoinduced dynamics. However, when a photon is absorbed by a system, there are multiple pathways that can compete with each other. Then how can we devise a system that has optimal photoinduced dynamics for a specific optoelectronic application? We may start with small molecular model systems with well-defined structures. We build up fundamental understandings of model molecular systems and structure-property relationships, which can eventually be utilized in optoelectronic applications.We have studied the photoinduced dynamics of multichromophoric systems composed of various organic molecules such as porphyrin, merocyanine, BODIPY, diketopyrrolopyrrole, perylenediimide, and so on. We aim to understand the interplay between electronic and nuclear motion within a few picoseconds, in addition to simply revealing the lifespan of each photoexcited state. Nuclear motion can have a significant impact on ultrafast photoinduced dynamics on this time scale, including charge/energy transfer, singlet fission, intersystem crossing, and internal conversion. To monitor such ultrafast dynamics, we have used cutting-edge time-resolved spectroscopic tools, including broadband transient absorption, excited-state time-domain Raman, and two-dimensional electronic spectroscopy. We leveraged these tools to study the role of vibronic couplings in photoinduced dynamics. References1. T. Kim†, C. Lin†, J. D. Schultz, R. M. Young, M. R. Wasielewski, J. Am. Chem. Soc.2022, 144, 11386-11396.2. C. Lin†, T. Kim†, J. D. Schultz, R. M. Young, M. R. Wasielewski, Nat. Chem.2022, 14, 786-793.3. S. Kang†, T. Kim†, Y. Hong, F. Würthner, D. Kim, J. Am. Chem. Soc.2021, 143, 9825-9833.4. T. Kim, J. Kim, X.-S. Ke, J. T. Brewster, J. Oh, J. L. Sessler, D. Kim, Angew. Chem. Int. Ed.2021, 60, 9379-9383.5. T. Kim†, S. Kang†, E. Kirchner, D. Bialas, W. Kim, F. Würthner, D. Kim, Chem2021, 7, 715-725.6. T. Kim, W. Kim, O. Vakuliuk, D. T. Gryko, D. Kim, J. Am. Chem. Soc. 2020, 142, 1564-1573.7. X.-S. Ke†, T. Kim†, V. M. Lynch, D. Kim, J. L. Sessler, J. Am. Chem. Soc.2017, 139, 13950-13956.8. T. Kim, J. Kim, H. Mori, S. Park, M. Lim, A. Osuka, D. Kim, Phys. Chem. Chem. Phys.2017, 19, 13970-13977.* 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 3월 9일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2023-03-03
- WRITER : 화학과
- HIT : 816
고에너지 리튬 전지용 트레이드 오프가 없는 불소화황산화물계 난연 첨가제 기술

세미나가 다음주 수요일 (12월 7일) 오후 4시 30분에 개최됩니다.이번 학기 마지막 세미나로 많은 참여 부탁드립니다.목요일 아닌 수요일, 장소는 2층이 아닌 1층 330102호실에서 진행됩니다.===============================================================================제 목 : 고에너지 리튬 전지용 트레이드 오프가 없는 불소화황산화물계 난연 첨가제 기술연 사 : 오지민 선임연구원(한국전자통신연구원)일 시 : 2022년 12월 7일(수)오후 4시 30분장 소 : 화학관 1층 330102호실================================================================================고에너지 리튬 전지용 트레이드 오프가 없는 불소화황산화물계 난연 첨가제 기술 한국전자통신연구원오지민 선임연구원(ojmhiin@etri.re.kr) 유기 전해질의 발화특성은 차세대 전기 자동차 및 스마트 그리드 시스템의 높은 용량의 리튬 이온전지의 안전성과 직결된다. 우리는 첨가제를 포함한 전해액의 자가 소화 시간 테스트와 싸이클 특성을 포함한 전기화학특성 모두 향상된 리튬 이온 전지용 전해액 첨가제를 개발하였다. 전기화학 셀은 니켈 90%의 리튬 니켈, 망간, 코발트 전이금속 산화물과 리튬 메탈 전극을 이용하였다. 종래 난연 첨가제로 알려진 인산계 난연 첨가제와 성능 비교를 하였고, 우수한 전기화학 특성 및 열적 특성을 보유함을 확인하였고, 우수한 전기화학 특성 및 열적 특성이 개선된 특성을 가지게 된 메커니즘을 밝혔다[1]. 결과적으로, 우수한 특성은 양전극-전해질 계면층의 저항이 줄어든 효과와 양전극 벌크 내 산소를 잡는 기작이 개발된 난연 첨가제에 있음을 확인할 수 있었다. 이와 관련된 구체적인 내용 및 불소화 황산화물계 유기화학 합성 물질이 전기화학에서 이해될 수 있는 측면을 세미나를 통해 이야기하고자 한다. [1] Jimin Oh, et al., A trade-off-free fluorosulfate-based flame-retardant electrolyte additive for high-energy lithium batteries, Journal of Materials Chemistry A, 2022, 10, 21933-21940
- 2022년 12월 7일(수) 오후 4시 30분
- 330102호실
- POSTED DATE : 2022-12-02
- WRITER : 화학과
- HIT : 772
Rapid Expansion of Compound Libraries Powered by High-Throughput Experimentation

미나가 이번주 목요일(12월 1일) 오후 4시 30분에 개최됩니다.많은 참여 부탁드립니다.===============================================================================제 목 : Rapid Expansion of Compound Libraries Powered by High-Throughput Experimentation연 사 : 서성은 교수님(아주대학교)일 시 : 2022년 12월 1일(목) 오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================Rapid Expansion of Compound Libraries Powered by High-Throughput Experimentation Sung-Eun SuhDepartment of Chemistry, Ajou University, Suwon 16499, Koreasesuh@ajou.ac.kr The availability of C–H substrates in nature is immeasurable in the context of both variety and quantity. Due to the richness of C–H bonds in bioactive molecules and their precursors, the development of new methodologies to functionalize and cross-couple C–H bonds and various coupling partners is highly desirable in drug discovery. Recently, high-throughput experimentation (HTE) represents an efficient and rapid method for discovering new organic reactions and synthesizing numerous reaction products in parallel. The powerful combination of science—C–H functionalization/cross-coupling reactions—and HTE technology will be discussed in this seminar.
- 2022년 12월 1일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2022-11-29
- WRITER : 화학과
- HIT : 807
LEAD peptide를 이용한 바이러스질환 치료제 개발

세미나가 이번 주 목요일(11월 24일) 오후 4시 30분에 개최됩니다.많은 참여 부탁드립니다.===============================================================================제 목 : LEAD peptide를 이용한 바이러스질환 치료제 개발연 사 : 권영도 연구소장(대한뉴팜 바이오연구소)일 시 : 2022년 11월 24일(목) 오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================LEAD peptide를 이용한 바이러스질환 치료제 개발 대한뉴팜 바이오연구소권영도 연구소장yd_kwon@dhnp.co.kr 바이러스의 지질 피막을 파괴하는 LEAD (Lipid Envelope Antiviral Disruption) peptide는 지질막의 곡률(curvature)을 인식함으로써 지름이 작고 곡률이 큰 바이러스 피막은 잘 파괴하는 반면에 지름이 크고 곡률이 작은 세포막은 파괴하지 않는 특징을 가진다. 따라서 피막을 가진 다양한 바이러스에 대해 활성을 가지면서 내성 변이체가 발생할 가능성이 거의 없고 세포독성은 낮기 때문에 범용성 항바이러스 치료제로 개발될 수 있다. 기존에 알려진 LEAD peptide의 항바이러스 활성을 크게 높인 과정 및 바이러스 입자로의 전달 효율을 높일 수 있는 다양한 수단을 소개한다.
- 2022년 11월 24일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2022-11-22
- WRITER : 화학과
- HIT : 825
Light Management with Synthetically-Designed Nanomaterials

세미나가 다음주 목요일(11월 17일) 오후 4시에 개최됩니다.많은 참여 부탁드립니다.이번 세미나는 Webex로 진행되는 온라인 세미나이오니 착오없으시길 바랍니다.===============================================================================제 목 : Light Management with Synthetically-Designed Nanomaterials연 사 : 김석형 교수(Michigan State University)일 시 : 2022년 11월 17일(목) 오후 4시<Webex참여>방번호: 170 974 2739링크: https://skku-ict.webex.com/meet/chem================================================================================Light Management with Synthetically-Designed Nanomaterials Seokhyoung KimAssistant Professor, Department of ChemistryMichigan State University Efficient control of light waves at the nanoscale – including trapping, guiding, absorbing, and emitting photons through resonant optical states – offers opportunities for the development of advanced light-based technologies such as optical data management, quantum information processing, linear and non-linear light generation, and solar energy conversion. In the past decades, chemical synthesis of high-symmetry nanostructures (e.g., nanoparticles) and lithographic fabrication of photonic crystals have propelled the study of fundamental optical states in size scales at or below the diffraction limit. More complex optical interference effects have been further discovered in ordered lattices of nanoresonators, which has launched a search for the new synthetic tools to create precisely-tailored nanostructures. In this presentation, I will introduce a research approach that tailors the geometry of nanostructures to enable new forms of light-matter interactions. An innovative bottom-up synthetic process will be introduced that produces Si nanowire (NW) geometric superlattices (GSLs) with true-nanoscale precision. I will present how rationally-designed NW GSLs can give rise to unique nanophotonic properties including narrowband optical coupling and optical bound states in the continuum (BICs) in the low-absorption limit. I will also introduce our recent effort to expand the morphologically-enabled optical effects to highly-absorbing and highly-emissive semiconductor systems including III-V compound semiconductors and halide perovskites.
- 2022년 11월 17일(목) 오후 4시
- Webex
- POSTED DATE : 2022-11-10
- WRITER : 화학과
- HIT : 717
Pd-catalyzed Asymmetric Hydrofunctonalization of Alkoxyallene: Evolution into de novo Glycosidic Bond Formation(취소)

세미나가 취소되었습니다.세미나가 다음주 목요일(11월 10일) 오후 4시 30분에 개최됩니다.많은 참여 부탁드립니다.===============================================================================제 목 : Pd-catalyzed Asymmetric Hydrofunctonalization of Alkoxyallene: Evolution into de novo Glycosidic Bond Formation연 사 : 이영호 교수(postech)일 시 : 2022년 11월 10일(목) 오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================Pd-catalyzed Asymmetric Hydrofunctonalization of Alkoxyallene: Evolution into de novo Glycosidic Bond Formation Young Ho RheeDepartment of Chemistry, Pohang University of Science and TechnologyPohang 37673, Korea yhrhee@postech.ac.kr Addition of nucleophiles to allenes represents a fundamental reaction in synthetic organic chemistry. Due to the atom-efficient nature and the capability to generate stereogenic centers, this type of reaction has drawn significant attention from the synthetic community over the last decades. In this context, we recently reported asymmetric addition reaction of various heteroatom nucleophiles to alkoxyallenes. A number of nucleophiles participate well in this reaction (including amides, alcohols and N-heterocycles) to generate the corresponding O,O- and N,O-acetals in a enantioenriched manner. This unique reaction encouraged us to develop a de novo synthetic strategy towards highly challenging targets such as oligosaccharides and ring-modified nucleosides. Our most recent efforts in this area will be introduced.
- 2022년 11월 10일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2022-11-03
- WRITER : 화학과
- HIT : 754
Electron-Induced Reorganization of Coordination Complexes to Promote Electrocatalytic H2 Evolution and CO2 Reduction

세미나가 이번 주 목요일(11월 3일) 오후 4시 30분에 개최됩니다.많은 참여 부탁드립니다.===============================================================================제 목 : Electron-Induced Reorganization of Coordination Complexes to Promote Electrocatalytic H2 Evolution and CO2 Reduction연 사 : 서준혁 교수(GIST)일 시 : 2022년 11월 3일(목) 오후 4시 30분장 소 : 화학관 2층 330226호실================================================================================Electron-Induced Reorganization of Coordination Complexes to Promote Electrocatalytic H2 Evolution and CO2 Reduction Junhyeok Seo Department of Chemistry, GISTGwangju 61005, Republic of KoreaE-mail: seojh@gist.ac.kr Abstract: Coordination complexes experience structural reorganizations along with electron transfers into the systems. The electron-induced reorganization would likely open a reaction site for substrates and provide a new reaction pathway in energy conversion and storage applications involving small molecules such as H2 or CO2. Polypyridyl complexes have shown abilities as electrocatalysts in H2 evolution reaction (HER) and CO2 reduction reaction (CO2RR). A proton-transfer process is a key step in determining the catalytic efficiency in the proton reduction reaction. On the other hand, individual electron and proton transfer steps should be controlled to enhance CO2RR selectively; otherwise, the thermodynamically favored HER will become dominant. In current examples, we synthesized NNN-Co-(bulky π-acceptor) complexes and could selectively dissociate Co–N (of tertiary amine donor) bond by initial two-electron transfers. The electron-induced structural reorganization led to a direct CO2 activation, and the subsequent proton transfer enhanced the CO2-to-CO conversion. In this talk, we will discuss the recent findings about the electron-induced reorganization of Co and Fe coordination complexes and the effect on the selective reactions toward protons and CO2.
- 2022년 11월 3일(목) 오후 4시 30분
- 330226호실
- POSTED DATE : 2022-11-03
- WRITER : 화학과
- HIT : 692