Physico-chemical study of a corona discharge in gas mixtures containing humid air, carbon dioxide and nitrogen oxides

Lachaud, S.; Loiseau, Jason; Gonbeau, Danielle

doi:10.1051/epjap:2004210

Cited by 1 publication

(1 citation statement)

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“…The polymeric entity produced under such conditions does not contain any bridge oxygen to link the carbazyl pedants. In our case, the oxygen ions (e.g., O - and O 2 - ) and radicals (e.g., O*) generated in the nanodischarge react with the native PVK to form bridge oxygen connecting the carbazole groups (see Figure d for proposed reactions). The incorporation of extra oxygen atoms into the raw PVK also causes a volume expansion in the reaction products; therefore, raised patterns are formed as shown in Figure .…”

Section: Resultsmentioning

confidence: 90%

Creating Polymer Structures of Tunable Electric Functionality by Nanoscale Discharge-Assisted Cross-Linking and Oxygenation

Xie

Deng

et al. 2006

J. Am. Chem. Soc.

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We report the creation of polymeric micro/nanostructures which exhibit distinct chemical and physical characteristics from the matrix poly(N-vinyl carbazole) (PVK). The structure formation is based on atomic force microscopy (AFM) facilitated cross-linking and oxygenation. The reaction of PVK with AFM lithographically induced nanoscale discharge produces raised structures in which bridge oxygen links neighboring carbazole groups. The cross-linking by bridge oxygen converts the initially insulating PVK matrix to chemically modified conducting patterns through the formation of extended pi-conjugations. A comprehensive AFM, PES (photoelectron spectroscopy), FTIR (Fourier transform infrared spectroscopy), and DFT (density functional theory) analysis is presented to address the chemophysical identity of the patterned structures. Our results demonstrate new capabilities of AFM nanolithography in generating heterogeneous functional structures in a polymer matrix.

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Section: Resultsmentioning

confidence: 90%