Assembly kinetics of nanocrystals via peptide hybridization
Demir, H. V.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/21954
- Research Paper 
The assembly kinetics of colloidal semiconductor quantum dots (QDs) on solid inorganic surfaces is of fundamental importance for implementation of their solid-state devices. Herein an inorganic binding peptide, silica binding QBP1, was utilized for the self-assembly of nanocrystal quantum dots on silica surface as a smart molecular linker. The QD binding kinetics was studied comparatively in three different cases: first, QD adsorption with no functionalization of substrate or QD surface; second, QD adsorption on QBP1-modified surface; and, finally, adsorption of QBP1-functionalized QD on silica surface. The surface modification of QDs with QBP1 enabled 79.3-fold enhancement in QD binding affinity, while modification of a silica surface with QBP1 led to only 3.3-fold enhancement. The fluorescence microscopy images also supported a coherent assembly with correspondingly increased binding affinity. Decoration of QDs with inorganic peptides was shown to increase the amount of surface-bound QDs dramatically compared to the conventional methods. These results offer new opportunities for the assembly of QDs on solid surfaces for future device applications. © 2011 American Chemical Society.
Showing items related by title, author, creator and subject.
Anisotropic emission from multilayered plasmon resonator nanocomposites of isotropic semiconductor quantum dots Ozel, T.; Nizamoglu, S.; Sefunc, M.A.; Samarskaya O.; Ozel I.O.; Mutlugun, E.; Lesnyak V.; Gaponik, N.; Eychmuller, A.; Gaponenko, S.V.; Demir, H. V. (2011)We propose and demonstrate a nanocomposite localized surface plasmon resonator embedded into an artificial three-dimensional construction. Colloidal semiconductor quantum dots are assembled between layers of metal nanoparticles ...
Balkan, N.; O'Brien-Davies, A.; Thoms, A.B.; Potter, R.J.; Poolton, N.; Adams, M.J.; Masum J.; Bek, A.; Serpenguzel, A.; Aydinli, A.; Roberts J.S. (1998)The hot Electron Light Emission and Lasing in Semiconductor Heterostructures devices (HELLISH-1) is novel surface emitter consisting of a GaAs quantum well, within the depletion region, on the n side of Ga 1-xAlxAs p- n ...
White light generation by resonant nonradiative energy transfer from epitaxial InGaN/GaN quantum wells to colloidal CdSe/ZnS core/shell quantum dots Nizamoglu, S.; Sari, E.; Baek J.-H.; Lee I.-H.; Demir, H. V. (2008)We propose and demonstrate white-light-generating nonradiative energy transfer (ET) from epitaxial quantum wells (QWs) to colloidal quantum dots (QDs) in their close proximity. This proof-of-concept hybrid color-converting ...