|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM180428594 |
| 003 |
DE-627 |
| 005 |
20231223155451.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231223s2008 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1021/la800276r
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n0602.xml
|
| 035 |
|
|
|a (DE-627)NLM180428594
|
| 035 |
|
|
|a (NLM)18576609
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Wang, Jialin
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a AFM forces measured between gold surfaces coated with self-assembled monolayers of 1-hexadecanethiol
|
| 264 |
|
1 |
|c 2008
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 08.09.2008
|
| 500 |
|
|
|a Date Revised 30.07.2008
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a An atomic force microscope (AFM) was used to measure the forces between gold surfaces with and without hydrophobizing them by the self-assembly of 1-hexadecanethiol. The forces measured between bare gold surfaces were fitted to the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory with a Hamaker constant of 1.2 x 10 (-20) J, which was close to the value determined using the methylene iodide contact angle method but was lower than that calculated using the Lifshitz theory. When the surfaces were hydrophobized in a 0.01 mM thiol-in-ethanol solution for 10 min, the measured forces exhibited a long-range force with a decay length of 35 nm. Despite its high water contact angle (105 degrees ), the force curve was smooth and exhibited no steps. When the surfaces were hydrophobized in a 1 mM thiol solution for longer than 6 h, however, the force curves exhibited steps, indicating that the long-range attractions were caused by bridging bubbles. When the measurements were conducted after washing the substrates with organic solvents, the steps disappeared and long-range attractive forces appeared. In the presence of ethanol, the water contact angle decreased to below 90 degrees , the attraction became weaker, and the force curves became smooth. On the basis of the results obtained in the present work, possible mechanisms for the long-range attractions are discussed
|
| 650 |
|
4 |
|a Journal Article
|
| 700 |
1 |
|
|a Yoon, Roe-Hoan
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 24(2008), 15 vom: 05. Aug., Seite 7889-96
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
|
| 773 |
1 |
8 |
|g volume:24
|g year:2008
|g number:15
|g day:05
|g month:08
|g pages:7889-96
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1021/la800276r
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_22
|
| 912 |
|
|
|a GBV_ILN_350
|
| 912 |
|
|
|a GBV_ILN_721
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 24
|j 2008
|e 15
|b 05
|c 08
|h 7889-96
|