Abstract:
A thiosulfate polymer composition includes an electron-accepting photosensitizer component, either as a separate compound or as an attachment to the thiosulfate polymer. The thiosulfate polymer composition can be applied to various articles, or used to form a predetermined polymeric pattern after photothermal reaction to form crosslinked disulfide bonds, removing non-crosslinked polymer, and reaction with a disulfide-reactive material. Such thiosulfate polymer compositions can also be used to sequestering metals.
Abstract:
A thiosulfate polymer composition includes an electron-accepting photosensitizer component, either as a separate compound or as an attachment to the thiosulfate polymer. The thiosulfate polymer composition can be used in methods to form predetermined patterns of metal nanoparticles.
Abstract:
Graphite oxide can be converted to its reduced form (r-GO) using exposing radiation having a peak wavelength (λmax) of less than 400 nm, and even less than 1 nm (X-rays). This conversion method is efficient and can be carried out with various forms of graphite oxide samples, with or without simultaneous application of heat, below atmospheric pressure, or in a reducing environment.
Abstract:
An amic acid or amic ester precursor can be applied to a substrate to form a thin film, and is then thermally converted into a semiconducting layer of the corresponding arylene diimide. This semiconducting thin film can be used in various articles including thin-film transistor devices that can be incorporated into a variety of electronic devices. In this manner, the arylene diimide need not be coated onto the substrate but is generated in situ from a solvent-soluble, easily coated precursor compound.
Abstract:
Aromatic non-polymeric amic acid salts are designed to be thermally converted into corresponding arylene diimides. These aromatic, non-polymeric amic acid salts can be used to prepare semiconducting thin films that can be used in various articles including thin-film transistor devices that can be incorporated into a variety of electronic devices. In this manner, the arylene diimide need not be coated but is generated in situ from a solvent-soluble, easily coated aromatic, non-polymeric amic acid salt at relatively lower temperature because the cation portion of the amic acid salt acts as an internal catalyst.
Abstract:
A photocurable composition includes at least one N-oxyazinium salt photoinitiator, a photosensitizer for the N-oxyazinium salt photoinitiator, an N-oxyazinium salt efficiency amplifier, and one or more photocurable acrylates. This composition can be cured using irradiation under high efficiency. Curing can be carried out in oxygen-containing environment.
Abstract:
The photocuring efficiency of an N-oxyazinium salt photoinitiator is increased by mixing it with an organic phosphine as a photoinitiator efficiency amplifier. This mixture or photoinitiator composition can be used to cure acrylates or other photocurable compounds, particularly in an oxygen-containing environment.
Abstract:
An amic acid or amic ester precursor can be applied to a substrate and thermally converted into a semiconducting layer of the corresponding arylene diimide. This semiconducting thin film can be used in various articles including thin-film transistor devices that can be incorporated into a variety of electronic devices. In this manner, the arylene diimide need not be coated but is generated in situ from a solvent-soluble, easily coated precursor compound.
Abstract:
A thin film transistor comprises a layer of organic semiconductor material comprising a tetracarboxylic diimide naphthalene-based compound having, attached to each of the imide nitrogen atoms, a substituted or unsubstituted arylalkyl moiety. Such transistors can further comprise spaced apart first and second contact means or electrodes in contact with said material. Further disclosed is a process for fabricating an organic thin-film transistor device, preferably by sublimation deposition onto a substrate, wherein the substrate temperature is no more than 100° C.
Abstract:
A thin film transistor comprises a layer of organic semiconductor material comprising a tetracarboxylic diimide naphthalene-based compound having, attached to one or both of the imide nitrogen atoms, a substituted or unsubstituted heterocycloalkyl ring system. Such transistors can further comprise spaced apart first and second contacts or electrodes in contact with said material. Further disclosed is a process for fabricating an organic thin-film transistor device, preferably by sublimation deposition onto a substrate, wherein the substrate temperature is no more than 200° C.