Stationary phase deposition based on onium salts

Details Stationary phase deposition based on onium salts Stationary phase deposition based on onium salts

2008-01-01

2008-01-01

Smith, Duane (Department: 1797)

Gas separation: processes

Chromatography

Liquid supported on surface of capillary column

C095S082000, C096S101000, C073S023390, C210S635000, C210S656000, C210S198200

Reexamination Certificate

active

11156975

ABSTRACT:
Onium salt chemistry can be used to deposit very uniform thickness stationary phases on the wall of a gas chromatography column. In particular, the stationary phase can be bonded to non-silicon based columns, especially microfabricated metal columns. Non-silicon microfabricated columns may be manufactured and processed at a fraction of the cost of silicon-based columns. In addition, the method can be used to phase-coat conventional capillary columns or silicon-based microfabricated columns.

REFERENCES:
patent: 4043905 (1977-08-01), Novotny et al.
patent: 4199330 (1980-04-01), Nestrick et al.
patent: 4242227 (1980-12-01), Nestrick et al.
patent: 4276061 (1981-06-01), Nestrick et al.
patent: 4756971 (1988-07-01), Virtanen et al.
patent: 4757023 (1988-07-01), Trestianu et al.
patent: 4780116 (1988-10-01), Cheh et al.
patent: 5262052 (1993-11-01), Rossiter et al.
patent: 5431821 (1995-07-01), Olesik et al.
patent: 5637135 (1997-06-01), Ottenstein et al.
patent: 6068684 (2000-05-01), Overton
patent: 2002/0056686 (2002-05-01), Kyrlidis et al.
patent: 2003/0042205 (2003-03-01), Gaudet et al.
C. Watanabe, “Features of Metal Capillary Columns,” J. Microcolumn Separations, 12, 6, (2000) 345-350.
C. M. Matzke, “Microfabricated silicon gas chromatographic micro-channels: fabrication and performance,” SPIE, Ro. 3511, Sep. 1998, 262-267.
Gordon Lambertus, “Design, Fabrication, and Evaluation of Microfabricated Columns for Gas Chromatography,” Anal. Chem. (2004) 76, 2629-2637.
Jennifer A. Harnisch, “Chemical Modification of Carbonaceous Stationary Phases by Reduction of Diazonium Salts,” Anal Chem. 2001, 73, 3954-3959.
Michael P. Stewart, “Direct Covalent Grafting of Conjugated Molecules onto Si, GaAs, and Pd Surfaces from Aryldiazonium Salts,” J. Am. Chem. Soc., (2004), 126, 370-378.
Jean Pinson, “Attachment of organic layers to conductive or semiconductive surfaces by reduction of diazonium salts,” Chem. Soc. Rev., (2005), 34, 429-439.
U.S. Appl. No. 11/065,894, filed Feb. 11, 2005, Dirk et al.

Affiliated with

Also associated with

Rating

Stationary phase deposition based on onium salts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stationary phase deposition based on onium salts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stationary phase deposition based on onium salts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3923196