Department of Chemical and Biomolecular Engineering
Korea Advanced Institute of Science and Technology

Recent Achievements

제목

[Front Cover] Size-controlled gold nano-tetradecapods with tunable optical and electromagnetic properties

Size-controlled gold nano-tetradecapodswith tunable optical and electromagnetic properties

Author : Kyeong Woo Choi, Shin Wook Kang, Do Youb Kim*, Sang Hyuk Im, Yangsun Park, Sang Woo Han* and O Ok Park*

Journal : Journal of Materials Chemistry C

Page : Vol. 4, No. 15, page 3063-3350(April, 2016)

[ABSTRACT]

The synthesis of novel branched Aunanocrystals with a well-defined and size-controllable dualistic structure, Aunano-tetradecapods, is presented. Using seed mediated growth and kineticallycontrolled reaction conditions, Au nano-tetradecapods with fourteen branchesgrown preferentially on the vertices of an Au rhombic dodecahedral core areobtained. The size of the branches is easily and readily controlled by simplyvarying the volume of HAuCl4 solution added or the reaction temperature, orboth. The localized surface plasmon resonance peak of the Au nano-tetradecapodscan be finely manipulated over a broad range of visible light through theselective tuning of their branch sizes. The enhanced and tunableelectromagnetic properties of the Au nano-tetradecapods are numericallyanalyzed using the finite difference time-domain method and they areexperimentally applied as effective surface enhanced Raman scatteringsubstrates as well. In addition, it is found that the branch/core size ratioderived from the dualistic structure is a critical parameter for determiningand controlling the properties of Au nano-tetradecapods.

관련기사 :

http://www.yonhapnews.co.kr/bulletin/2016/05/10/0200000000AKR20160510075700063.HTML?input=1195m 

 

 


 

첨부파일 다운로드

등록자관리자

등록일2016-05-11

조회수5,867

  • 페이스북 공유
  • 트위터 공유
  • Google+ 공유
  • 인쇄하기
 
사진제목
Controlling Molecular Orientation of Naphthalenediimide-Based Polymer Acceptors for HighPerformance All-Polymer Solar Cells Author: Jihye Jung, Wonho Lee, Changyeon Lee, Hyungju Ahn, Bumjoon J.Kim Journal: Advanced Energy Materials DOI: 10.1002/aen,.201600504 [ABSTRACT]Molecular orientation, with respect to donor/acceptor interface andelectrodes, plays a critical role in det...
A Highly Sensitive Molecular Detection Platform for Robust and Facile Diagnosis of Middle East Respiratory Syndrome (MERS) Corona VirusAuthor : Il Young Jung, Jae Bem You, Bo Ram Choi, Ji Su Kim, Hyun Kyung Lee, Bora Jang, Han Saem Jeong, Kyuri Lee, Sung Gap Im*, Hyukjin Lee*Journal : Advanced Healthcare Materials 2016, 5, 2168-2173[ABSTRACT]In this work, we demonstrate a definitive ...
Size-controlled gold nano-tetradecapodswith tunable optical and electromagnetic propertiesAuthor : Kyeong Woo Choi, Shin Wook Kang, Do Youb Kim*, Sang Hyuk Im, Yangsun Park, Sang Woo Han* and O Ok Park*Journal : Journal of Materials Chemistry CPage : Vol. 4, No. 15, page 3063-3350(April, 2016)[ABSTRACT]The synthesis of novel branched Aunanocrystals with a well-defined and size-controllable dualist...
Title: Metal ion triggers for reversible switching of DNA polymeraseAuthors: Ki Soo Park, Chang Yeol Lee, and Hyun Gyu Park Journal: Chemical CommunicationsPage: Vol. 52, page 4868-4871 (April, 2016) [Abstract] We herein develop a new strategy that modulates DNA polymerase activity in a reversible and switchable manner by using the novel interactions between DNA bases and metal...
Tuning selectivity of electrochemical reactions by atoomically dispersed platinum catalyst Chang Hyuck Choi, Minho Kim, Han Chang Kwon, Sung June Cho, Seongho Yun, Hee-Tak Kim, Karl J.J. Mayrhofer, Hyungjun Kim, Minkee Choi Nature Communications, Vol. 7, page 10922 (March 8, 2016) [Abstract] Maximum atom efficiency as well as distinct chemoselectivity is expected for electrocat...