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Ligand Shell Struct...
Ligand Shell Structure in Lead Sulfide–Oleic Acid Colloidal Quantum Dots Revealed by Small-Angle Scattering
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- Weir, Michael P. (författare)
- Department of Physics and Astronomy, The University of Sheffield, Sheffield, S3 7RH, United Kingdom
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- Toolan, Daniel T. W. (författare)
- Department of Chemistry, The University of Sheffield, Sheffield, S3 7HF, United Kingdom
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- Kilbride, Rachel C. (författare)
- Department of Physics and Astronomy, The University of Sheffield, Sheffield, S3 7RH, United Kingdom
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- Penfold, Nicholas J. W. (författare)
- Department of Chemistry, The University of Sheffield, Sheffield, S3 7HF, United Kingdom
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- Washington, Adam L. (författare)
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
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- King, Stephen M. (författare)
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
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- Xiao, James (författare)
- Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Zhang, Zhilong (författare)
- Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Gray, Victor, Dr, 1988- (författare)
- Uppsala universitet,Fysikalisk kemi,Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Dowland, Simon (författare)
- Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Winkel, Jurjen (författare)
- Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Greenham, Neil C. (författare)
- Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Friend, Richard H. (författare)
- Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Rao, Akshay (författare)
- Cavendish Laboratory, Cambridge University, Cambridge, CB3 0HE, United Kingdom
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- Ryan, Anthony J. (författare)
- Department of Chemistry, The University of Sheffield, Sheffield, S3 7HF, United Kingdom
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- Jones, Richard A. L. (författare)
- Department of Physics and Astronomy, The University of Sheffield, Sheffield, S3 7RH, United Kingdom
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(creator_code:org_t)
- 2019-07-30
- 2019
- Engelska.
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Ingår i: The Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 10:16, s. 4713-4719
- Relaterad länk:
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https://doi.org/10.1...
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https://pubs.acs.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Nanocrystal quantum dots are generally coated with an organic ligand layer. These layers are a necessary consequence of their chemical synthesis, and in addition they play a key role in controlling the optical and electronic properties of the system. Here we describe a method for quantitative measurement of the ligand layer in 3 nm diameter lead sulfide–oleic acid quantum dots. Complementary small-angle X-ray and neutron scattering (SAXS and SANS) studies give a complete and quantitative picture of the nanoparticle structure. We find greater-than-monolayer coverage of oleic acid and a significant proportion of ligand remaining in solution, and we demonstrate reversible thermal cycling of the oleic acid coverage. We outline the effectiveness of simple purification procedures with applications in preparing dots for efficient ligand exchange. Our method is transferrable to a wide range of colloidal nanocrystals and ligand chemistries, providing the quantitative means to enable the rational design of ligand-exchange procedures.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- Chemistry with specialization in Materials Chemistry
- Kemi med inriktning mot materialkemi
- Chemistry with specialization in Physical Chemistry
- Kemi med inriktning mot fysikalisk kemi
- Fysikalisk kemi
- Physical Chemistry
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- art (ämneskategori)
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- Av författaren/redakt...
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Weir, Michael P.
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Toolan, Daniel T ...
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Kilbride, Rachel ...
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Penfold, Nichola ...
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Washington, Adam ...
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King, Stephen M.
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visa fler...
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Xiao, James
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Zhang, Zhilong
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Gray, Victor, Dr ...
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Dowland, Simon
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Winkel, Jurjen
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Greenham, Neil C ...
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Friend, Richard ...
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Rao, Akshay
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Ryan, Anthony J.
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Jones, Richard A ...
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Uppsala universitet