korean english


Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 다과를 준비하오니 많은 참석 부탁드립니다.

아 래

Title: Single-molecule chemistry and spectroscopy on ultrathin insulating films

Speaker: Dr. Yousoo Kim ( RIKEN, Japan )

Date & Time: Nov. 18 (Wed.) 2015, 4:30 PM

Place: Natural Science 1,  Room No. 31214

Abstract: Ultrathin insulating films grown on metal substrate has been a subject of great
interest for investigation of individual adsorbate atoms and molecules using a scanning
tunneling microscope (STM), because of electronic decoupling between the adsorbate
and supporting metal surface under an STM junction. Here, I will talk about two
representative works that we have done about energetics at the single-molecule
interfaces on the ultrathin insulating films.
The chemical reactivity of a water molecule on an
ultrathin MgO film supported by the Ag(100) substrate
depends greatly on film thickness and be enhanced
compared to that achieved with their bulk counterpart [1].
The change of chemical reactivity of ultrathin MgO film
depending on the film thickness can be explained by the
strengthening of the interaction between the oxide and
metal interface layers [2]. Our results clearly show that
such structural imperfections at the interface can improve
the chemical reactivity of the MgO film supported by an
Ag substrate [3].
Optical properties of a single metal-free phthalocyanine (H2Pc) molecule on the
2-ML thick NaCl film supported by Ag(111) have been also studied by scanning
tunneling luminescence spectroscopy. I will discuss about the single molecule reaction
of an H2Pc molecule with tunneling electrons and accompanied optical property
changes in a single-molecule luminescence spectra.
[1]. H.-J. Shin, J. Jung, K. Motobayashi, S. Yanagisawa, Y. Morikawa, Y. Kim, and M.
Kawai, Nat. Mater. 9, 442 (2010).
[2]. J. Jung, H.-J. Shin, Y. Kim, and M. Kawai, Phys. Rev. B 82, 085413 (2010);
[3]. J. Jung, H.-J. Shin, Y. Kim, and M. Kawai, J. Am. Chem. Soc. 133, 6142 (2011); J.
Am. Chem. Soc. 134, 10554 (2012)

번호 제목 날짜 조회 수
공지 2021학년도 1학기 콜로퀴움 일정 2021.01.13 31969
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 641313
462 <April. 27(Wed.) 4:30 PM> 로봇과 함께 살아갈 미래 2016.04.22 40008
461 <4/6(Wed.) 1pm> Results from DM-Ice17 2016.04.05 41370
460 <April. 6(Wed.) 4:30 PM> Quantitative Determination of High Tc Superconductivity Mechanism 2016.03.31 46371
459 <March. 30(Wed.) 4:30 PM> Tetraneutron (four-neutron nucleus) 2016.03.24 42876
458 <March.24(Thu) 14:00> A new boson and muon g-2 2016.03.17 39793
457 <March. 23(Wed.) 4:30 PM> 조선시대의 천문시계 2016.03.17 42889
456 <March.18(Fri) 11:00> High Pressure Synthesis and Characterization of Non-Oxide Superconductors 2016.03.14 40457
455 <March. 16(Wed.) 4:30 PM> 초고속반도체의 블랙다이아몬드™,low-k 2016.03.10 43301
454 <March. 9(Wed.) 4:30 PM>가치 있는 대학 생활이란 무엇인가? file 2016.03.07 42870
453 <March 8(Tue) 18:00> Unsolved puzzles of Gamma-Ray Bursts 2016.03.03 40165
452 2016학년도 1학기 콜로퀴움 일정 2016.02.03 117575
451 <Dec.30(Wed) 16:30> Some basics about the thermoelectricity; the semi-classical Boltzmann transport approach 2015.12.24 44212
450 <Dec. 9(Wed.) 4:30 PM>Direct detection of dark matter at Underground 2015.12.03 50207
449 <Dec. 2(Wed.) 4:30 PM> Next-generation solar cells for high photo-conversion efficiency 2015.11.25 54519
448 <Nov. 25(Wed.) 4:30 PM> Present and Future of OLED 2015.11.19 54457
» <Nov. 18(Wed.) 4:30 PM> Single-molecule chemistry and spectroscopy on ultrathin insulating films 2015.11.11 54397
446 <Nov. 11(Wed.) 4:30 PM> 그래핀 산업의 현황과 전망 2015.11.09 48369
445 <Nov.13(Fri) 16:00> Kondo screening in mixed valence and heavy fermion compounds and the signatures of Nozieres’ exhaustion 2015.11.04 47289
444 <Nov. 4(Wed.) 4:30 PM> 기능성 산화물과 그래핀을 접합한 나노소자의 특성 변화 2015.10.30 47125
443 <Oct.20(Tue) 10:00-12:00> Novel quantum transport in Weyl semimetals and double-Weyl semimetals 2015.10.23 43530