Interfacial Electron Transfer from CdSe/ZnS Quantum Dots to TiO2 Nanoparticles: Size Dependence at the Single-Molecule Level

ChemPhysChem ◽  
2012 ◽  
Vol 13 (11) ◽  
pp. 2711-2720 ◽  
Author(s):  
Chun-Li Chang ◽  
Po-Yu Tsai ◽  
Yu-pin Chang ◽  
King-Chuen Lin
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Tio2 Nanoparticles ◽  
Single Molecule ◽  
Size Dependence ◽  
Interfacial Electron Transfer ◽  
Single Molecule Level

Single-molecule interfacial electron transfer dynamics of porphyrin on TiO2 nanoparticles: dissecting the interfacial electric field and electron accepting state density dependent dynamics

2015 ◽  
Vol 51 (94) ◽  
pp. 16821-16824 ◽  
Author(s):  
Vishal Govind Rao ◽  
Bharat Dhital ◽  
H. Peter Lu
Keyword(s):  
Electron Transfer ◽  
Electric Field ◽  
Tio2 Nanoparticles ◽  
Single Molecule ◽  
Electrochemical Techniques ◽  
State Density ◽  
Interfacial Electron Transfer ◽  
Density Dependent

Single-molecule photon-stamping spectroscopy correlated with electrochemical techniques was used to dissect interfacial electron transfer dynamics by probing an m-ZnTCPP molecule anchored to a TiO2 NP surface.

Efficiency of Interfacial Electron Transfer from Zn-Porphyrin Dyes into TiO2 Correlated to the Linker Single Molecule Conductance

2013 ◽  
Vol 117 (46) ◽  
pp. 24462-24470 ◽  
Author(s):  
Christian F. A. Negre ◽  
Rebecca L. Milot ◽  
Lauren A. Martini ◽  
Wendu Ding ◽  
Robert H. Crabtree ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Single Molecule ◽  
Interfacial Electron Transfer

Electron Transfer in a Naphthalene Diimide System Studied by Single-Molecule Delayed Fluorescence

2020 ◽  
Vol 73 (8) ◽  
pp. 699
Author(s):  
Rosalind P. Cox ◽  
Saman Sandanayake ◽  
Steven J. Langford ◽  
Toby D. M. Bell
Keyword(s):  
Electron Transfer ◽  
Single Molecule ◽  
Delayed Fluorescence ◽  
Pmma Film ◽  
Time Resolved ◽  
Single Molecule Level ◽  
Film Interpretation ◽  
Fluorescence Measurements ◽  
Naphthalene Diimide ◽  
Prompt And Delayed Fluorescence

Electron transfer (ET) is a key chemical reaction in nature and has been extensively studied in bulk systems, but remains challenging to investigate at the single-molecule level. A previously reported naphthalene diimide (NDI)-based system (Higginbotham et al., Chem. Commun. 2013, 49, 5061–5063) displays delayed fluorescence with good quantum yield (~0.5) and long-lived (nanoseconds) prompt and delayed fluorescence lifetimes, providing an opportunity to interrogate the underlying ET processes in single molecules. Time-resolved single-molecule fluorescence measurements enabled forward and reverse ET rate constants to be calculated for 45 individual molecules embedded in poly(methylmethacrylate) (PMMA) film. Interpretation of the results within the framework of Marcus–Hush theory for ET demonstrates that variation in both the electronic coupling and the driving force for ET is occurring from molecule to molecule within the PMMA film and over time for individual molecules.

Reversible Intramolecular Electron Transfer at the Single-Molecule Level

2003 ◽  
Vol 115 (35) ◽  
pp. 4341-4346 ◽  
Author(s):  
Roel Gronheid ◽  
Alina Stefan ◽  
Mircea Cotlet ◽  
Johan Hofkens ◽  
Jianqiag Qu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Single Molecule ◽  
Intramolecular Electron Transfer ◽  
Single Molecule Level
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