利用卟啉敏化的单壁纳米管场效应晶体管进行光的仿生检测

Bioinspired detection of light using a porphyrin-sensitized single-wall nanotube field effect transistor.

作者信息

Hecht David S, Ramirez Robert J A, Briman Mikhail, Artukovic Erika, Chichak Kelly S, Stoddart J Fraser, Grüner George

机构信息

Department of Physics, California NanoSystems Institute, University of California, Los Angeles, California 90095, USA.

出版信息

Nano Lett. 2006 Sep;6(9):2031-6. doi: 10.1021/nl061231s.

DOI:10.1021/nl061231s

PMID:16968021

Abstract

Single-wall carbon nanotube (SWNT) field effect transistors (FETs), functionalized noncovalently with a zinc porphyrin derivative, were used to directly detect a photoinduced electron transfer (PET) within a donor/acceptor (D/A) system. We report here that the SWNTs act as the electron donor and the porphyrin molecules as the electron acceptor. The magnitude of the PET was measured to be a function of both the wavelength and intensity of applied light, with a maximum value of 0.37 electrons per porphyrin for light at 420 nm and 100 W/m2. A complete understanding of the photophysics of this D/A system is necessary, as it may form the basis for applications in artificial photosynthesis and alternative energy sources such as solar cells.

摘要

单壁碳纳米管（SWNT）场效应晶体管（FET）通过与锌卟啉衍生物进行非共价功能化处理，被用于直接检测供体/受体（D/A）系统中的光致电子转移（PET）。我们在此报告，单壁碳纳米管充当电子供体，卟啉分子充当电子受体。测得的PET大小是所施加光的波长和强度的函数，对于420 nm波长、100 W/m²的光，每个卟啉的PET最大值为0.37个电子。全面了解该D/A系统的光物理性质很有必要，因为它可能构成人工光合作用及太阳能电池等替代能源应用的基础。