نتایج جستجو برای: gold nanostar

تعداد نتایج: 83414  

Journal: :Journal of the American Chemical Society 2008
Mahmoud A Mahmoud Christopher E Tabor Mostafa A El-Sayed Yong Ding Zhong Lin Wang

Nanocatalysts that possess large amounts of atoms on sharp corners and edges and high indexed sites are known to be more catalytically active. We report here on a novel yet simple method to synthesize in large yields a very active platinum nanocatalyst; the multiarmed nanostar single crystal. We utilize a seed mediated method using tetrahedral nanoparticles that are also synthesized by a new an...

Journal: :Molecules 2016
Mohamad Nazri Husin Roslan Hasni Nabeel Ezzulddin Arif Muhammad Imran

A topological index of graph G is a numerical parameter related to G which characterizes its molecular topology and is usually graph invariant. In the field of quantitative structure-activity (QSAR)/quantitative structure-activity structure-property (QSPR) research, theoretical properties of the chemical compounds and their molecular topological indices such as the Randić connectivity index, at...

Journal: :Materials Today 2011

2015
Yang Liu Jeffrey R. Ashton Everett J. Moding Hsiangkuo Yuan Janna K. Register Andrew M. Fales Jaeyeon Choi Melodi J. Whitley Xiaoguang Zhao Yi Qi Yan Ma Ganesan Vaidyanathan Michael R. Zalutsky David G. Kirsch Cristian T. Badea Tuan Vo-Dinh

Nanomedicine has attracted increasing attention in recent years, because it offers great promise to provide personalized diagnostics and therapy with improved treatment efficacy and specificity. In this study, we developed a gold nanostar (GNS) probe for multi-modality theranostics including surface-enhanced Raman scattering (SERS) detection, x-ray computed tomography (CT), two-photon luminesce...

Journal: :Nanoscale 2014
Jiwon Lee Bo Hua Seungyoung Park Minjeong Ha Youngsu Lee Zhiyong Fan Hyunhyub Ko

Plasmonic systems based on metal nanoparticles on a metal film have generated great interest for surface-enhanced Raman spectroscopy (SERS) chemical sensors. In this study, we describe the fabrication of ultrasensitive SERS substrates based on high-density gold nanostar assemblies on silver films with tailored surface plasmons, where multiple field enhancements from particle-film and interparti...

Journal: :Molecules 2009
Masayoshi Nakano Ryohei Kishi Takuya Minami Kyohei Yoneda

The optical functionalities such as exciton recurrence and migration for dendritic systems, e.g., dendrimers, are investigated using the quantum master equation (QME) approach based on the ab initio molecular orbital configuration interaction (MOCI) method, which can treat both the coherent and incoherent exciton dynamics at the first principle level. Two types of phenylacetylene dendrimers, Ca...

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