|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM177686928 |
| 003 |
DE-627 |
| 005 |
20231223150749.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231223s2008 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1021/la7030768
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n0592.xml
|
| 035 |
|
|
|a (DE-627)NLM177686928
|
| 035 |
|
|
|a (NLM)18281998
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Kocharova, Natalia
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Self-assembled carbon nanotubes on gold
|b polarization-modulated infrared reflection-absorption spectroscopy, high-resolution X-ray photoemission spectroscopy, and near-edge X-ray absorption fine structure spectroscopy study
|
| 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 05.05.2008
|
| 500 |
|
|
|a Date Revised 26.03.2008
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a Recently we reported noncovalent functionalization of nanotubes in an aqueous medium with ionic liquid-based surfactants, 1-dodecyl-3-methylimidazolium bromide (1) and 1-(12-mercaptododecyl)-3-methylimidazolium bromide (2), resulting in positively charged single-wall carbon nanotube (SWNT)-1,2 composites. Thiolation of SWNTs with 2 provides their self-assembly on gold as well as templating gold nanoparticles on SWNT sidewalls via a covalent -S-Au bond. In this investigation, we studied the electronic structure, intermolecular interactions, and packing within noncovalently thiolated SWNTs and also nanotube alignment in the bulk of SWNT-2 dried droplets and self-assembled submonolayers (SAMs) on gold by high-resolution X-ray photoemission spectroscopy (HRXPS), C K-edge X-ray absorption fine structure (NEXAFS) spectroscopy, and polarization-modulated infrared reflection-absorption spectroscopy (PM-IRRAS). HRXPS data confirmed the noncovalent nature of interactions within the nanocomposite of thiolated nanotubes. In PM-IRRAS spectra of SWNT SAMs on gold, the IR-active vibrational SWNT modes have been observed and identified. According to PM-IRRAS data, the hydrocarbon chains of 2 are oriented with less tilt angle to the bare gold normal in a SAM deposited from an SWNT-2 dispersion than those of 1 deposited from an SWNT-1 dispersion on the mercaptoethanesulfonic acid-primed gold. For both the dried SWNT-2 bulk and the SWNT-2 SAM on gold, the C K-edge NEXAFS spectra revealed the presence of CH-pi interactions between hydrocarbon chains of 2 and the pi electronic nanotube structure due to the highly resolved vibronic fine structure of carbon 1s --> R*/sigma*C-H series of states in the alkyl chain of 2. For the SWNT-2 bulk, the observed splitting and upshift of the SWNT pi* orbitals in the NEXAFS spectrum indicated the presence of pi-pi interactions. In the NEXAFS spectrum of the SWNT-2 SAM on gold, the upshifted values of the photon energy for R*/sigma*C-H transitions indicated close contact of 2 with nanotubes and with a gold surface. The angle-dependent NEXAFS for the SWNT-2 bulk showed that most of the molecules of 2 are aligned along the nanotubes, which are self-organized with orientation parallel to the substrate plane, whereas the NEXAFS for the SWNT-2 SAM revealed a more normal orientation of functionality 2 on gold compared with that in the SWNT-2 bulk
|
| 650 |
|
4 |
|a Journal Article
|
| 700 |
1 |
|
|a Leiro, Jarkko
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Lukkari, Jukka
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Heinonen, Markku
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Skala, Tomas
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Sutara, Frantisek
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Skoda, Michal
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Vondracek, Martin
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 24(2008), 7 vom: 01. Apr., Seite 3235-43
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
|
| 773 |
1 |
8 |
|g volume:24
|g year:2008
|g number:7
|g day:01
|g month:04
|g pages:3235-43
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1021/la7030768
|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 7
|b 01
|c 04
|h 3235-43
|