New Jersey Institute of Technology

Aide Wu

John F Federici

Zafar Iqbal

Yuan Gu

Polydiacetylenes (PDAs) and PDA/ZnO nanocomposites based on the monomers: 10,12-pentacosadiynoic acid (PCDA), 10,12-tricosadiynoic acid (TCDA) and 10,12-docosadiynedioic acid (DCDA) monomers are chromatic chemical sensing agents for selected organic liquids. Thermochromically reversible compositions include PCDA and nanosize ZnO having a particle size range less than 100 nm.

Polydiacetylene and polydiacetylene/ZnO nanocomposite sensors

A chemical process to formulate conductive ink with low sintering temperature for inkjet printing is described and shown. The application of fabricated flexible conductive film on lithium ion batteries is also described. This chemical method and composition can remove the oxidation on metallic nanoparticle surface during ink fabrication and sintering processes. Etched metallic ions in the conductive ink are reduced and particles bridged while annealing printed patterns to achieve low temperature sintering at about 350&#xb0; C. The chemical process can be applied on nickel materials that are excellent current collectors for lithium ion batteries due to high chemical stability especially at high charging-discharging potential of less than 3 Volts. Thermal decomposition and chemical reduction of silver salts are two methods disclosed for particle-free silver ink. Surfactant additive further make silver film more uniform and easier to be sintered.

Fabrication of flexible conductive items and batteries using modified inks

Novel TCDA/ZnO compositions in which the ZnO particles have an average particle size less than 100 nm are disclosed. Reversible thermochromatic sensors employing the TCDA nanocomposites and methods of printing TCDA/ZnO nanocomposite thin films forming the reversible thermochromatic sensors using inkjet printing techniques are also disclosed.

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Kearny, NJ, United States of America

Aide Wu