The direct observation of charge separation dynamics in CdSe quantum dots/cobaloxime hybrids

Physical Chemistry Chemical Physics : PCCP
J HuangX Zhang

Abstract

In this work, we investigated photoinduced charge separation dynamics in a CdSe quantum dot/cobaloxime molecular catalyst hybrid using the combination of transient optical (OTA) and X-ray absorption (XTA) spectroscopy. We show that ultrafast charge separation occurs through electron transfer (ET) from CdSe QDs to cobaloxime. In addition to the enhanced 1S exciton bleach recovery in CdSe QDs due to the presence of cobaloxime, the direct evidence for ET process, i.e. the formation of the transient charge separated state, is captured by XTA. These results not only demonstrate the capability of XTA to capture the transient species during the photoinduced reactions in hybrid nanostructures but also enhance our understanding of charge separation dynamics in semiconductor nanocrystal/molecular catalyst hybrid.

References

Mar 29, 2001·Journal of the American Chemical Society·Z A Peng, X Peng
Sep 20, 2001·Journal of the American Chemical Society·F GloaguenT B Rauchfuss
Nov 20, 2001·Nature·M Grätzel
Dec 14, 2006·Annual Review of Physical Chemistry·Victor I Klimov
Oct 12, 2007·Chemical Reviews·Arthur J Esswein, Daniel G Nocera
Apr 9, 2008·Journal of the American Chemical Society·Jier HuangTianquan Lian
Nov 13, 2009·Accounts of Chemical Research·W Justin YoungbloodThomas E Mallouk
Nov 26, 2009·Accounts of Chemical Research·Jillian L DempseyHarry B Gray
Dec 2, 2009·Proceedings of the National Academy of Sciences of the United States of America·Pierre-André JacquesMarc Fontecave
Dec 5, 2009·Chemical Reviews·Dmitri V TalapinElena V Shevchenko
Mar 12, 2010·Journal of the American Chemical Society·Jier HuangTianquan Lian
Jan 8, 2011·Chemical Communications : Chem Comm·Fezile Lakadamyali, Erwin Reisner
Jul 13, 2011·Angewandte Chemie·Vincent ArteroMarc Fontecave
Feb 23, 2012·Journal of the American Chemical Society·Katherine A BrownPaul W King
Mar 28, 2013·Accounts of Chemical Research·Jinhui YangCan Li
Dec 11, 2013·Journal of the American Chemical Society·Manuela A GrossErwin Reisner

❮ Previous
Next ❯

Citations

Apr 23, 2016·Accounts of Chemical Research·Karen L Mulfort, Lisa M Utschig
Nov 16, 2019·Chemical Communications : Chem Comm·Jun-Chao HuFeng Wang

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.