期刊
CHEMISTRY OF MATERIALS
卷 19, 期 9, 页码 2155-2161出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm062107c
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A method for the direct thermal patterning of a thermally labile pi-conjugated polymer film containing a NIR sensitive dye using a continuous wave 830 nm NIR diode laser is described. The method is demonstrated with poly(3-(2-(2-tetrahydropyranyloxy)ethyl)thiophene) (PTHPET), which is rendered insoluble upon localized heating with the NIR irradiation due to catalytically enhanced elimination and volatilization of dihydropyran. The optical and photophysical properties of the patterned pi-conjugated material are described. High-resolution pixels (10 mu m) of conjugated polymer can be obtained with laser dosages as low as 600 mJ/cm(2) at laser scan speeds of 0.6 m/s. The method is capable of imaging large surface areas, up to 1 m(2), at relatively high throughput and with micrometer size resolution, and thus could find application where the patterning of electroluminescent and/or conducting organic materials are required.
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