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Photon induced effects in molecular ...

The University of North Carolina at Charlotte., Optical Science and Engineering (PhD).

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Photon induced effects in molecular assemblies of single walled carbon nanotubes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Photon induced effects in molecular assemblies of single walled carbon nanotubes./
作者:	Chaturvedi, Harsh.
面頁冊數:	169 p.
附註:	Adviser: Jordan C. Poler.
Contained By:	Dissertation Abstracts International69-12B.
標題:	Chemistry, Physical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3337177
ISBN:	9780549918318

Photon induced effects in molecular assemblies of single walled carbon nanotubes.
Chaturvedi, Harsh.

Photon induced effects in molecular assemblies of single walled carbon nanotubes. - 169 p.

Adviser: Jordan C. Poler.

Thesis (Ph.D.)--The University of North Carolina at Charlotte, 2008.

Single Walled Carbon Nanotubes (SWNT) are important for devices and sensors based on nanotechnology. Future optoelectronic devices can be made from the assemblies of diverse nanostructured materials and SWNTs, providing enhanced functionality. "Molecular assembly" as suggested by Feynman and envisioned by Drexler requires directed self assembly of rigid molecular components. Rigid ruthenium complexes have very strong absorbance in the visible spectrum and charge transfer properties; whereas SWNTs have exceptional electron accepting and charge transport properties. We have shown specific binding of these complexes with the end of SWNTs. Samples have been characterized using atomic force microscopy, and scanning electron microscopy. Absorption and Raman spectroscopy shows charge transfer and diameter selective binding of these metallodendrimers onto SWNTs. Photon enhanced aggregation properties of SWNT due to these ruthenium complexes are demonstrated. Ruthenium centered phenanthroline complexes exhibit a strong metal to ligand charge transfer. We believe that the nanotube quenches charge from the ligand after the complex has been optically excited. This results in optically altering the carrier density, and therefore the transport properties of the nanotubes. Field effect transistors (FET) have been fabricated using e-beam and conventional lithography. Photon induced affects on the charge transport are shown. Optical gating is shown in the functionalized SWNT FET.

ISBN: 9780549918318Subjects--Topical Terms:

560527
Chemistry, Physical.

Photon induced effects in molecular assemblies of single walled carbon nanotubes.
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