Field-effect transistor chemical sensors of single nanoribbon of copper phthalocyanine

Copper phthalocyanine (CuPc) nanoribbon field-effect transistors were implemented as chemical sensors. They showed fast response and high reversibility in the detection of the tetrahydrofuran atmosphere at room temperature. The drain current of the field-effect transistor sensor decreased from 6.7 to 0.2 nA when the transistor was measured under the tetrahydrofuran atmosphere. The sensor was self-refreshable in a few minutes. These results demonstrate that the organic single crystalline nanoribbon transistors could effectively act as chemical sensors. Supported by the National Natural Science Foundation of China (Grant Nos. 20721061, 50725311, 60736004, 60771031), the Ministry of Science and Technology of China (Grant Nos. 2006CB806200, 2006CB932100), and Chinese Academy of Sciences