Patterned Poly(2-hydroxyethyl methacrylate) Brushes on Silicon Surfaces Behave as “Tentacles” To Capture Ferritin from Aqueous Solution

2009 ◽  
Vol 1 (7) ◽  
pp. 1525-1532 ◽  
Author(s):  
Jem-Kun Chen ◽  
Zong-Yan Chen ◽  
Han-Ching Lin ◽  
Po-Da Hong ◽  
Feng-Chih Chang
2020 ◽  
Vol 25 ◽  
pp. 101324
Author(s):  
Estefanía Oyarce ◽  
Guadalupe Del C. Pizarro ◽  
Diego P. Oyarzún ◽  
Rudy Martin-Trasanco ◽  
Julio Sánchez

1990 ◽  
Vol 9 (1) ◽  
pp. 36-46,122 ◽  
Author(s):  
Ikuro HARASHIMA ◽  
Tadashi HIRASAWA

2000 ◽  
Vol 78 (4) ◽  
pp. 516-519 ◽  
Author(s):  
Sefik Süzer ◽  
Ömer Dag

X-ray photoelectron spectroscopy (XPS) is used to determine the oxidation state of gold deposited from an aqueous solution of AuCl4- on to various oxidized surfaces of silicon. Although the observed Au4f signal decreased with the thickness of the oxide layer, the oxidation state of Au was determined as 0 for all the samples analyzed. From the angular dependence of the Si2p and Au4f signals it was determined that Au is deposited on top of the oxidized surfaces of metallic silicon. It is postulated that from an aqueous solution of AuCl4-, gold would deposit in its zerovalent form on to any surface due to its large and positive electrochemical reduction potential (ε°red(Au3+ /Au) = +1.50 V) and the substrate plays a role only in providing active deposition sites. To further support the proposal, it is shown that the same process takes place even in inert and hydrophobic polypropylene substrates. Similarly, it is also shown that more gold deposits if the surface of the polypropylene is made less hydrophobic (but probably more active) via the industrially used corona discharge treatment.Key words: XPS, gold, electroless deposition, oxidized silicon surface.


2019 ◽  
Vol 76 (12) ◽  
pp. 6179-6191 ◽  
Author(s):  
Zehra Gün Gök ◽  
Kübra Günay ◽  
Metin Arslan ◽  
Mustafa Yiğitoğlu

2001 ◽  
Vol 76-77 ◽  
pp. 7-8
Author(s):  
Lee M. Loewenstein ◽  
Paul W. Mertens ◽  
Marc M. Heyns

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