Routine proton and carbon-13 NMR analysis of functionalized semiconductor quantum dots for biodetection studies
EMSL Project ID
3894
Abstract
The research included in this proposal involves the routine analysis of organic ligand-stabilized semiconductor nanoparticles that will serve as the signal transduction element in fluorescence-based biosensors. The semiconductor cores (typically CdSe or CdTe) of the nanoparticles are surrounded by an encapsulating layer of organic molecules which can be analyzed using standard solution-phase proton and carbon-13 NMR techniques. The purpose of this analysis is to determine the overall purity of the nanoparticle samples allowing for the comparison of organic ligands that are bound to the nanoparticle core to those that are free in solution. Usage of the instrument would be steady but light with a typical sample taking on the order of 5-15 minutes on a 300 MHz instrument.
Project Details
Project type
Capability Research
Start Date
2004-05-14
End Date
2004-09-29
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
Feng M, J Zhao, and H Petek. 2008. "Atomlike, Hollow-Core-Bound Molecular Orbitals of C60." Science 320(5874):359-362. doi:10.1126/science.1155866
Feng M, J Zhao, T Huang, X Zhu, and H Petek. 2011. "The Electronic Properties of Superatom States of Hollow Molecules." Accounts of Chemical Research 44(5):360-368. doi:10.1021/ar1001445
Feng M, J Zhao, T Huang, X Zhu, and H Petek. 2011. "The Electronic Properties of Superatom States of Hollow Molecules." Accounts of Chemical Research 44(5):360-368. doi:10.1021/ar1001445
H. Petek and J. Zhao, ?Ultrafast Interfacial Proton-coupled Electron Transfer,? Chem. Rev. 110, 7082 (2010).
Huang T, J Zhao, M Feng, H Petek, S Yang, and L Dunsch. 2010. "Superatom orbitals of Sc?N@C?? and their intermolecular hybridization on Cu(110)-(2x1)-O surface." Physical Review. B, Condensed Matter and Materials Physics 81(8):085434. doi:10.1103/PhysRevB.81.085434
Hu S, J Zhao, Y Jin, H Petek, and JG Hou. 2010. "Nearly Free Electron Superatom States of Carbon and Boron Nitride Nanotubes." Nano Letters 10(12):4830-4838. doi:10.1021/nl1023854
Hu S, J Zhao, Y Jin, J Yang, H Petek, and JG Hou. 2010. "Nearly Free Electron Superatom States of Carbon and Boron Nitride Nanotubes." Nano Letters 10(12):4830-4838. doi:10.1021/nl1023854
Jin Zhao, Jinlong Yang and Hrvoje Petek. 2009. "Theoretical study of the molecular and electronic structure of methanol on a TiO2(110) surface." Phys. Rev. B 80(23):235416. DOI:10.1103/PhysRevB.80.235416
Published 12/10/2009.
Jin Zhao, Min Feng, Jinlong Yang and Hrvoje Petek, ?The superatom states of fullerenes and their hybridization into the nearly free electron bands of fullerites?, ACS Nano, 3, 853 (2009)
J. Zhao, J. Yang, H. Petek, "Theoretical study of the molecular and electronic structure of methanol on a TiO2(110) surface." Phys. Rev. B 80 (2009) 235416-11.
J. Zhao, N. Pontius, A. Winkelmann, V. Sametoglu, A. Kubo, A. G. Borisov, D. Sánchez-Portal, V. M. Silkin, E. V. Chulkov, P. M. Echenique, and H. Petek, “The electronic potential of a chemisorption interface� Phys. Rev. B (in press).
J. Zhao, N. Pontius, A. Winkelmann, V. Sametoglu, A. Kubo, A. G. Borisov, D. Sánchez-Portal, V. M. Silkin, E. V. Chulkov, P. M. Echenique, and H. Petek, “The electronic potential of a chemisorption interface” Phys. Rev. B 085419 (2008).
L. Chiodo, J.-M. García-Lastra, A. Iacomino, S. Ossicini, J. Zhao, H. Petek and A. Rubio, 2010. "Self-Energy and Excitonic Effects in the Electronic and Optical Properties of TiO2 Crystalline Phases." Phys. Rev. B 82:045207. published 7/22/2010. DOI: 10.1103/PhysRevB.82.045207
Petek H, and J Zhao. 2010. "Ultrafast Interfacial Proton-Coupled Electron Transfer." Chemical Reviews 110(12):7082-7099. doi:10.1021/cr1001595
Petek H, and J Zhao. 2010. "Ultrafast Interfacial Proton-Coupled Electron Transfer." Chemical Reviews 110(12):7082-7099. doi:10.1021/cr1001595).
S. Achilli, M.I. Trioni, E.V. Chulkov, P.M. Echenique, V. Sametoglu, N. Pontius, A. Winkelmann, A. Kubo, J. Zhao, H. Petek,"Spectral properties of Cs and Ba on Cu(111) at very low coverage: Two-photon photoemission spectroscopy and electronic structure theory." Phys. Rev. B 80(24): 245419-8
Sun H, DJ Mowbray, A Migani, J Zhao, H Petek, and A Rubio. 2015. "Comparing Quasiparticle H2O Level Alignment on Anatase and Rutile TiO2." ACS Catalysis 5:4242–4254. doi:10.1021/acscatal.5b00529
T. Minato, Y. Sainoo, Y. Kim, H.S. Kato, K.-i. Aika, M. Kawai, J. Zhao, H. Petek, T. Huang, W. He, B. Wang, Z. Wang, Y. Zhao, J. Yang, and J.G. Hou, "The electronic structure of oxygen atom vacancy and hydroxyl impurity defects on titanium dioxide (110) surface," The Journal of Chemical Physics 130, 124502 (2009).
Wang LM, V Sametoglu, A Winkelmann, J Zhao, and H Petek. 2011. "Two-Photon Photoemission Study of the Coverage-Dependent Electronic Structure of Chemisorbed Alkali Atoms on a Ag(111) Surface." Journal of Physical Chemistry A 115(34):9479-9484. doi:10.1021/jp111932r
Winkelmann A, V Sametoglu, J Zhao, A Kubo, and H Petek. 2007. "Angle-dependent Study of a Direct Optical Transition in the sp Bands of Ag(111) by One- and Two-photon Photoemission." Physical Review. B, Condensed Matter 76:195428 1-11. doi:10.1103/PhysRevB.76.195428
Zhao J, B Li, KD Jordan, J Yang, and H Petek. 2006. "Interplay Between Hydrogen Bonding and Electron Solvation on Hydrated TiO2(110)." Physical Review. B, Condensed Matter 73:195309-1-195309-10.
Zhao J, B Li, K Onda, M Feng, and H Petek. 2006. "Solvated Electrons on Metal Oxide Surfaces." Chemical Reviews 106:4402-4427.