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词条 Surface energy transfer
释义

  1. Formula

  2. Efficiency

  3. Applications

  4. See also

  5. References

Surface energy transfer (SET) is a dipole-surface energy transfer process involving metallic surface and molecular dipole.[1]

Formula

The SET rate follows the inverse of the fourth power of the distance[2]

where is the donor emission lifetime, is the distance between donor-acceptor, and is the distance at which SET efficiency decreases to 50% (i.e., equal probability of energy transfer and spontaneous emission).

Efficiency

The energy transfer efficiency also follows a similar form

Due to the fourth power dependence SET can cover a distance more than 15 nm, which is almost twice the efficiency of FRET.[3] Theoretically predicted in 1978 by Chance et al. it was proved experimentally in 2000s by different workers.[4]

Applications

The efficiency of SET as nanoruler has been used in live cells.[5]

Gold nano particles are frequently used in these studies as the nanoparticle surface.{{citation needed|date=January 2017}}

See also

  • Dexter electron transfer
  • Förster resonance energy transfer

References

1. ^{{cite journal|author=Christopher J. Breshike |author2=Ryan A. Riskowski |author3=Geoffrey F. Strouse|last-author-amp=yes|title=Leaving Förster Resonance Energy Transfer Behind: Nanometal Surface Energy Transfer Predicts the Size-Enhanced Energy Coupling between a Metal Nanoparticle and an Emitting Dipole|journal=J. Phys. Chem. C|date=2013|volume=117|issue=45|pages=23942–23949|doi=10.1021/jp407259r}}
2. ^{{cite journal|author=C. S. Yun|display-authors=etal|title=Nanometal Surface Energy Transfer in Optical Rulers, Breaking the FRET Barrier|journal=J. Am. Chem. Soc.|date=2005|volume=127|issue=9|pages=3115–3119|doi=10.1021/ja043940i|pmid=15740151}}
3. ^{{cite journal|author=T. L. Jennings |author2=M. P. Singh |author3=G. F. Strouse|last-author-amp=yes|title=Fluorescent Lifetime Quenching near d = 1.5 nm Gold Nanoparticles:  Probing NSET Validity|journal=J. Am. Chem. Soc.|date=2006|volume=128|issue=16|pages=5462–5467|doi=10.1021/ja0583665|pmid=16620118}}
4. ^{{cite journal|author=R. Chance|author2=A. Prock|author3=R. Silbey|last-author-amp=yes|title=Molecular Fluorescence and Energy Transfer Near Interfaces|journal=Adv. Chem. Phys.|date=1978|volume=60|page=1|doi=10.1002/9780470142561.ch1}}
5. ^{{cite journal|author=Yan Chen|display-authors=etal|title=A Surface Energy Transfer Nanoruler for Measuring Binding Site Distances on Live Cell Surfaces|journal=J. Am. Chem. Soc.|date=2010|volume=132|issue=46|pages=16559–16570|doi=10.1021/ja106360v|pmid=21038856|pmc=3059229}}

2 : Energy transfer|Fluorescence
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