Photoinduced charge transfer between CdSe nanocrystal quantum dots and Ru-polypyridine complexes

Milan Sykora, Melissa A. Petruska, James Alstrum-Acevedo, Ilya Bezel, Thomas J. Meyer, Victor I Klimov

Research output: Contribution to journalArticle

192 Citations (Scopus)

Abstract

In this communication, we demonstrate a new approach to sensitization of Ru-polypyridine complexes by using semiconductor nanocrystal quantum dots (NQDs). When mixed in solution, the complexes functionalized by carboxylic groups adsorb onto the surface of the NQDs. Excitation of NQDs by 400 nm light leads to fast, 5 ps hole transfer from the photoexcited NQDs to the surface-adsorbed complexes. This result indicates that Ru complexes can be sensitized by CdSe NQDs, which opens interesting opportunities for designing new types of photocatalytic materials for solar energy conversion applications. These materials will take advantage of broad size-controlled absorption spectra and large extinction coefficients of NQDs as well as the unique property of NQDs to respond to absorption of a single photon by producing multiple electron-hole pairs.

Original languageEnglish
Pages (from-to)9984-9985
Number of pages2
JournalJournal of the American Chemical Society
Volume128
Issue number31
DOIs
Publication statusPublished - Aug 9 2006

Fingerprint

Quantum Dots
Nanoparticles
Nanocrystals
Semiconductor quantum dots
Charge transfer
Solar Energy
Energy conversion
Solar energy
Photons
Absorption spectra
Semiconductor materials
Electrons
Light
Communication

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Photoinduced charge transfer between CdSe nanocrystal quantum dots and Ru-polypyridine complexes. / Sykora, Milan; Petruska, Melissa A.; Alstrum-Acevedo, James; Bezel, Ilya; Meyer, Thomas J.; Klimov, Victor I.

In: Journal of the American Chemical Society, Vol. 128, No. 31, 09.08.2006, p. 9984-9985.

Research output: Contribution to journalArticle

Sykora, Milan ; Petruska, Melissa A. ; Alstrum-Acevedo, James ; Bezel, Ilya ; Meyer, Thomas J. ; Klimov, Victor I. / Photoinduced charge transfer between CdSe nanocrystal quantum dots and Ru-polypyridine complexes. In: Journal of the American Chemical Society. 2006 ; Vol. 128, No. 31. pp. 9984-9985.
@article{08b509c1bf314be2a9d4c6887fbac4f0,
title = "Photoinduced charge transfer between CdSe nanocrystal quantum dots and Ru-polypyridine complexes",
abstract = "In this communication, we demonstrate a new approach to sensitization of Ru-polypyridine complexes by using semiconductor nanocrystal quantum dots (NQDs). When mixed in solution, the complexes functionalized by carboxylic groups adsorb onto the surface of the NQDs. Excitation of NQDs by 400 nm light leads to fast, 5 ps hole transfer from the photoexcited NQDs to the surface-adsorbed complexes. This result indicates that Ru complexes can be sensitized by CdSe NQDs, which opens interesting opportunities for designing new types of photocatalytic materials for solar energy conversion applications. These materials will take advantage of broad size-controlled absorption spectra and large extinction coefficients of NQDs as well as the unique property of NQDs to respond to absorption of a single photon by producing multiple electron-hole pairs.",
author = "Milan Sykora and Petruska, {Melissa A.} and James Alstrum-Acevedo and Ilya Bezel and Meyer, {Thomas J.} and Klimov, {Victor I}",
year = "2006",
month = "8",
day = "9",
doi = "10.1021/ja061556a",
language = "English",
volume = "128",
pages = "9984--9985",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "31",

}

TY - JOUR

T1 - Photoinduced charge transfer between CdSe nanocrystal quantum dots and Ru-polypyridine complexes

AU - Sykora, Milan

AU - Petruska, Melissa A.

AU - Alstrum-Acevedo, James

AU - Bezel, Ilya

AU - Meyer, Thomas J.

AU - Klimov, Victor I

PY - 2006/8/9

Y1 - 2006/8/9

N2 - In this communication, we demonstrate a new approach to sensitization of Ru-polypyridine complexes by using semiconductor nanocrystal quantum dots (NQDs). When mixed in solution, the complexes functionalized by carboxylic groups adsorb onto the surface of the NQDs. Excitation of NQDs by 400 nm light leads to fast, 5 ps hole transfer from the photoexcited NQDs to the surface-adsorbed complexes. This result indicates that Ru complexes can be sensitized by CdSe NQDs, which opens interesting opportunities for designing new types of photocatalytic materials for solar energy conversion applications. These materials will take advantage of broad size-controlled absorption spectra and large extinction coefficients of NQDs as well as the unique property of NQDs to respond to absorption of a single photon by producing multiple electron-hole pairs.

AB - In this communication, we demonstrate a new approach to sensitization of Ru-polypyridine complexes by using semiconductor nanocrystal quantum dots (NQDs). When mixed in solution, the complexes functionalized by carboxylic groups adsorb onto the surface of the NQDs. Excitation of NQDs by 400 nm light leads to fast, 5 ps hole transfer from the photoexcited NQDs to the surface-adsorbed complexes. This result indicates that Ru complexes can be sensitized by CdSe NQDs, which opens interesting opportunities for designing new types of photocatalytic materials for solar energy conversion applications. These materials will take advantage of broad size-controlled absorption spectra and large extinction coefficients of NQDs as well as the unique property of NQDs to respond to absorption of a single photon by producing multiple electron-hole pairs.

UR - http://www.scopus.com/inward/record.url?scp=33746890174&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33746890174&partnerID=8YFLogxK

U2 - 10.1021/ja061556a

DO - 10.1021/ja061556a

M3 - Article

VL - 128

SP - 9984

EP - 9985

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 31

ER -