The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Sep. 22, 2010
Andrew M. Dattelbaum, Los Alamos, NM (US);
Gautam Gupta, Los Alamos, NM (US);
Juan G. Duque, Los Alamos, NM (US);
Stephen K. Doorn, Los Alamos, NM (US);
Christopher E. Hamilton, Los Alamos, NM (US);
Kimberly A. Defriend Obrey, Los Alamos, NM (US);
Andrew M. Dattelbaum, Los Alamos, NM (US);
Gautam Gupta, Los Alamos, NM (US);
Juan G. Duque, Los Alamos, NM (US);
Stephen K. Doorn, Los Alamos, NM (US);
Christopher E. Hamilton, Los Alamos, NM (US);
Kimberly A. DeFriend Obrey, Los Alamos, NM (US);
Los Alamos National Security, LLC, Los Alamos, NM (US);
Abstract
Fluorescent composites of surfactant-wrapped single-walled carbon nanotubes (SWNTs) were prepared by exposing suspensions of surfactant-wrapped carbon nanotubes to tetramethylorthosilicate (TMOS) vapor. Sodium deoxycholate (DOC) and sodium dodecylsulphate (SDS) were the surfactants. No loss in emission intensity was observed when the suspension of DOC-wrapped SWNTs were exposed to the TMOS vapors, but about a 50% decrease in the emission signal was observed from the SDS-wrapped SWNTs nanotubes. The decrease in emission was minimal by buffering the SDS/SWNT suspension prior to forming the composite. Fluorescent xerogels were prepared by adding glycerol to the SWNT suspensions prior to TMOS vapor exposure, followed by drying the gels. Fluorescent aerogels were prepared by replacing water in the gels with methanol and then exposing them to supercritical fluid drying conditions. The aerogels can be used for gas sensing.