Study of the helium cross-section of unsymmetric disulfide self-assembled monolayers on Au(111)

ALBAYRAK, EROL; Karabuga, Semistan; Bracco, Gianangelo; Danışman, M. Fatih

doi:10.1016/j.apsusc.2016.08.062

Study of the helium cross-section of unsymmetric disulfide self-assembled monolayers on Au(111)

Yazarlar (4)

Doç. Dr. Erol ALBAYRAK Kırşehir Ahi Evran Üniversitesi, Türkiye

Semistan Karabuga
Kahramanmaras Sütçü Imam Üniversitesi, Türkiye

Gianangelo Bracco Università Degli Studi Di Genova, İtalya

M. Fatih Danışman
Middle East Technical University (Metu), Türkiye

Makale Türü	Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı	Applied Surface Science (Q1)
Dergi ISSN	0169-4332 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler	SCI-Expanded
Makale Dili	İngilizce	Basım Tarihi	12-2016
Cilt / Sayı / Sayfa	390 / 1 / 283–288	DOI	10.1016/j.apsusc.2016.08.062
Makale Linki	https://doi.org/10.1016/j.apsusc.2016.08.062

Özet

We have investigated the formation of self-assembled monolayers (SAMs) of 11-hydroxyundecyl decyl disulfide (CH 3 -(CH 2 ) 9 -S-S-(CH 2 ) 11 -OH, HDD) and 11-hydroxyundecyl octadecyl disulfide (CH 3 -(CH 2 ) 17 -S-S-(CH 2 ) 11 -OH, HOD) produced by supersonic molecular beam deposition (SMBD). The study has been carried out by means of helium diffraction at very low film coverage. In this regime helium single molecule cross sections have been estimated in a temperature range between 100 K and 450 K. The results show a different behavior above 300 K that has been interpreted as the starting of mobility with the formation of two thiolate moieties either linked by a gold adatom or distant enough to prevent cross section overlapping. Finally, helium diffraction patterns measured at 80 K for the SAMs grown at 200 K are discussed and the results support the proposed hypothesis of molecular dissociation based on the cross section data.

Anahtar Kelimeler

Science Direct

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
Scopus	4
Web of Science	4

Study of the helium cross-section of unsymmetric disulfide self-assembled monolayers on Au(111)

Dergi Adı	APPLIED SURFACE SCIENCE
Yayıncı	Elsevier B.V.
Açık Erişim	Hayır
ISSN	0169-4332
E-ISSN	1873-5584
CiteScore	13,4
SJR	1,310
SNIP	1,193

Study of the helium cross-section of unsymmetric disulfide self-assembled monolayers on Au(111)

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