Literature DB >> 17555293

Analysis of self-assembled monolayers on gold surfaces using direct analysis in real time mass spectrometry.

Kafui Kpegba, Tycho Spadaro, Robert B Cody, Nasri Nesnas, Joel A Olson.   

Abstract

Mass spectrometry was performed on self-assembled monolayers (SAMs) of dodecanethiol on gold using the new direct analysis in real time (DART) ionization technique. Observed peaks for the SAMs included monomers, dimers, and trimers of the SAM molecules, with the dimer and trimer relative peak heights enhanced as compared to the spectra for neat dodecanethiol. The possibility that the observed peaks were due to residual (noncovalently bonded) material on the surface was tested by attempting to observe residual dodecanol. No peaks corresponding to dodecanol were observed. These results indicate that DART is an excellent ionization method for the direct and unambiguous mass analysis of chemical species in self-assembled monolayers.

Entities:  

Year:  2007        PMID： 17555293     DOI： 10.1021/ac062276g

Source DB:  PubMed          Journal:  Anal Chem        ISSN： 0003-2700            Impact factor:   6.986


  9 in total

1.  Direct analysis in real time (DART) mass spectrometry of nucleotides and nucleosides: elucidation of a novel fragment [C5H5O]+ and its in-source adducts.

Authors:  Matthew Curtis; Mikael A Minier; Priyanka Chitranshi; O David Sparkman; Patrick R Jones; Liang Xue
Journal:  J Am Soc Mass Spectrom       Date:  2010-04-07       Impact factor: 3.109

2.  The characterization of self-assembled monolayers on copper surfaces by low-temperature plasma mass spectrometry.

Authors:  Lin Ma; Mingzhe Jia; Jingbo Hu; Jin Ouyang; Na Na
Journal:  J Am Soc Mass Spectrom       Date:  2012-05-17       Impact factor: 3.109

3.  Characterization of direct-current atmospheric-pressure discharges useful for ambient desorption/ionization mass spectrometry.

Authors:  Jacob T Shelley; Joshua S Wiley; George C Y Chan; Gregory D Schilling; Steven J Ray; Gary M Hieftje
Journal:  J Am Soc Mass Spectrom       Date:  2009-01-01       Impact factor: 3.109

4.  Implementation of DART and DESI ionization on a fieldable mass spectrometer.

Authors:  J Mitchell Wells; Michael J Roth; Adam D Keil; John W Grossenbacher; Dina R Justes; Garth E Patterson; Dennis J Barket
Journal:  J Am Soc Mass Spectrom       Date:  2008-07-18       Impact factor: 3.109

5.  Determination of the presence or absence of sulfur materials in drywall using direct analysis in real time in conjunction with an accurate-mass time-of-flight mass spectrometer.

Authors:  Matthew E Curtis; Patrick R Jones; O David Sparkman; Robert B Cody
Journal:  J Am Soc Mass Spectrom       Date:  2009-07-19       Impact factor: 3.109

6.  Comparison of the internal energy deposition of direct analysis in real time and electrospray ionization time-of-flight mass spectrometry.

Authors:  Glenn A Harris; Dana M Hostetler; Christina Y Hampton; Facundo M Fernández
Journal:  J Am Soc Mass Spectrom       Date:  2010-01-28       Impact factor: 3.109

7.  Ionization mechanism of negative ion-direct analysis in real time: a comparative study with negative ion-atmospheric pressure photoionization.

Authors:  Liguo Song; Andrew B Dykstra; Huifang Yao; John E Bartmess
Journal:  J Am Soc Mass Spectrom       Date:  2008-09-23       Impact factor: 3.109

8.  Characterization of rhodamine self-assembled films using desorption electrospray ionization mass spectrometry.

Authors:  Ruixia Shi; Na Na; Fubin Jiang; Jin Ouyang
Journal:  J Am Soc Mass Spectrom       Date:  2013-04-05       Impact factor: 3.109

9.  Localization of Major Ephedra Alkaloids in Whole Aerial Parts of Ephedrae Herba Using Direct Analysis in Real Time-Time of Flight-Mass Spectrometry.

Authors:  Nayoung Yun; Hye Jin Kim; Sang Cheol Park; Geonha Park; Min Kyung Kim; Young Hae Choi; Young Pyo Jang
Journal:  Molecules       Date:  2021-01-22       Impact factor: 4.411
  9 in total

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