Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Arnim Henglein"'
Autor:
A. Fojtik, Arnim Henglein
Publikováno v:
The Journal of Physical Chemistry B. 110:1994-1998
Luminescent colloidal silicon particles are obtained by burning silane and slowly etching the product with hydrogen fluoride. Depending on their size, the particles emit red-orange or blue-green light with decay times between 28 micros and0.1 micros,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d64b475a056ab05f734611249cb515cb
https://doi.org/10.1021/jp058176g
https://doi.org/10.1021/jp058176g
Autor:
Arnim Henglein
Publikováno v:
Langmuir. 17:2329-2333
Ag(CN)2- is reduced at a low rate by radiolytically generated hydroxymethyl radicals. The reduction occurs on tiny nuclei in solution formed by hydrolysis. When colloidal silver seed particles are present in the solution, the reduction of Ag(CN)2- is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b908136cd239d0ead30f398cb5f44a3
https://doi.org/10.1021/la001081f
https://doi.org/10.1021/la001081f
Publikováno v:
The Journal of Chemical Physics. 114:2760-2765
Ultrafast laser spectroscopy has been used to measure the electron–phonon coupling constant in PtAu core–shell bimetallic nanoparticles. A chemical reduction method was used to prepare Pt cores of 12.5 nm diameter and a γ-radiolytic deposition t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10e34e77aa7955d0b9f9f7652a380fe5
https://doi.org/10.1063/1.1339266
https://doi.org/10.1063/1.1339266
Publikováno v:
The Journal of Physical Chemistry B. 104:11708-11718
The preparation of gold−silver nanoparticles with a core−shell structure by radiation chemistry is described. The optical properties of particles containing Au cores and Ag shells are compared to those of the reverse system for a variety of overa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f61dbec90b00821041bcfe7660a1b1b9
https://doi.org/10.1021/jp002438r
https://doi.org/10.1021/jp002438r
Publikováno v:
The Journal of Physical Chemistry B. 104:9954-9965
The wide variety of applications of metal nanoparticles has motivated many studies of their properties. Some important practical issues are how the size, composition and structure of these materials affect their catalytic and optical properties. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6800cb435c6c2ab33811d93f6535662
https://doi.org/10.1021/jp002256x
https://doi.org/10.1021/jp002256x
Autor:
Arnim Henglein, Michael Giersig
Publikováno v:
The Journal of Physical Chemistry B. 104:6767-6772
Aqueous solutions of Pt(II) (aged PtCl42- solutions) are reduced by hydrogen in the absence of a stabilizer and in the presence of stabilizing sodium citrate or/and sodium hydroxide. The rate of reduction is measured optically and conductometrically,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43e60fe66fa4d50a6f654bb3d6e53069
https://doi.org/10.1021/jp000801o
https://doi.org/10.1021/jp000801o
Autor:
Arnim Henglein, Michael Giersig
Publikováno v:
The Journal of Physical Chemistry B. 104:5056-5060
The γ-radiolytic reduction of Hg2+ in aqueous solution in the presence of 0.3 M 2-propanol first leads to Hg22+ (e237 nm = 3.2 × 104 M-1 cm-1), and later to colloidal mercury. When the reduction is carried out in the presence of colloidal gold nano
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0e7baf4dc74153f78cd4d45b37a99ee
https://doi.org/10.1021/jp993682p
https://doi.org/10.1021/jp993682p
Publikováno v:
The Journal of Chemical Physics. 112:5942-5947
Ultrafast laser experiments were used to study electron-phonon coupling in Au nanoparticles in the 2.5 to 8 nm size range in aqueous solution. The electron-phonon coupling constants for these samples were found to be independent of the particle size.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d5ba9c174b4b9f56223de7c321417ae
https://doi.org/10.1063/1.481167
https://doi.org/10.1063/1.481167
Autor:
Arnim Henglein
Publikováno v:
The Journal of Physical Chemistry B. 104:1206-1211
Colloidal copper particles (20−100 nm) are formed in the γ-irradiation of aqueous solutions of KCu(CN)2, which also contain methanol or 2-propanol as OH scavenger. The radiation chemical yield is of the order of 0.1 Cu atoms formed per 100 eV abso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43aa08a31c3f2ee02e8bd392f82c91ff
https://doi.org/10.1021/jp992950g
https://doi.org/10.1021/jp992950g
Publikováno v:
Pure and Applied Chemistry. 72:189-197
This paper describes our recent work using ultrafast laser spectroscopy to examine the fundamental properties of metal particles. Two studies are presented. First, the characteristic time scale for electron-phonon coupling in Au particles with sizes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ca7ea2dc2ed221d7ae4f83e0bb92c3b
https://doi.org/10.1351/pac200072010189
https://doi.org/10.1351/pac200072010189