Introduction to Time-Resolved Spectroscopy: Nanosecond Transient Absorption and Time-Resolved Fluorescence of Eosin B

2018 ◽  
Vol 95 (5) ◽  
pp. 864-871 ◽  
Author(s):  
Erik P. Farr ◽  
Jason C. Quintana ◽  
Vanessa Reynoso ◽  
Josiah D. Ruberry ◽  
Wook R. Shin ◽  
...  
Keyword(s):  
Transient Absorption ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Eosin B

Spectral and Photoprototropic Characteristics of 4-Aminobiphenyl in β-Cyclodextrin

2004 ◽  
Vol 69 (4) ◽  
pp. 748-758 ◽  
Author(s):  
Israel V. Muthu Vijayan Enoch ◽  
Meenakshisundaram Swaminathan
Keyword(s):  
Excited State ◽  
Steady State ◽  
Fluorescence Spectroscopy ◽  
Inclusion Complex ◽  
Ground State ◽  
Time Resolved Fluorescence ◽  
Neutral Form ◽  
Time Resolved ◽  
Time Resolved Spectroscopy

The photophysical and photoprototropic behaviour of 4-aminobiphenyl (4ABP) in aqueous β-cyclodextrin (β-CDx) solution has been investigated using steady-state and time-resolved fluorescence spectroscopy. Fluorescence of the neutral form of 4ABP is enhanced due to the formation of a 1:1 complex with β-CDx. The formation of this complex has been confirmed by time-resolved spectroscopy. In the presence of β-CDx, no change was observed in the ground state pKa value but the excited state pKa value changed. Based on its photophysical and photoprototropic characteristics in β-CDx, the structure of the 1:1 inclusion complex is proposed.

Remarkable effects of solvent and substitution on the photo-dynamics of cytosine: a femtosecond broadband time-resolved fluorescence and transient absorption study

2015 ◽  
Vol 17 (29) ◽  
pp. 19045-19057 ◽  
Author(s):  
Chensheng Ma ◽  
Chopen Chan-Wut Cheng ◽  
Chris Tsz-Leung Chan ◽  
Ruth Chau-Ting Chan ◽  
Wai-Ming Kwok
Keyword(s):  
Transient Absorption ◽  
Absorption Study ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Nonradiative Deactivation

Solvent alters differently the rate of ππ* and nπ* decay while substitution enhances or eliminates the nπ* from cytosine nonradiative deactivation.

Charge carrier kinetics of carbon nitride colloid: a femtosecond transient absorption spectroscopy study

2016 ◽  
Vol 18 (22) ◽  
pp. 14904-14910 ◽  
Author(s):  
Huiyu Zhang ◽  
Yaping Chen ◽  
Rong Lu ◽  
Ruiyu Li ◽  
Anchi Yu
Keyword(s):  
Charge Carrier ◽  
Carbon Nitride ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Spectroscopy Study ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Femtosecond Transient Absorption ◽  
Femtosecond Transient Absorption Spectroscopy ◽  
Kinetics Of

The charge carrier kinetics of carbon nitride colloid was investigated using a combination of femtosecond transient absorption and picosecond time-resolved fluorescence spectroscopy.

A Simple Dyad Exhibiting Microsecond Charge-Separation in Non-Polar Solvents

2006 ◽  
Vol 59 (3) ◽  
pp. 179 ◽  
Author(s):  
Kenneth P. Ghiggino ◽  
James A. Hutchison ◽  
Steven J. Langford ◽  
Melissa J. Latter ◽  
Marcia A.-P. Lee ◽  
...  
Keyword(s):  
Electron Spin ◽  
Charge Separation ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved Fluorescence ◽  
Polar Solvents ◽  
Separation Processes ◽  
Time Resolved ◽  
A Charge

A simple photovoltaic device in which two chromophoric components are assembled by Zn–N coordination yields a charge-separated state with microsecond lifetime upon photoexcitation in non-polar solvents. Characterization of the electron transfer dynamics using time-resolved fluorescence and transient absorption spectroscopy suggests that the unusual longevity is due to charge recombination occurring between states with different electron spin character. Control of electron spin may provide a novel paradigm for optimizing light-induced charge-separation processes.

Mapping of exciton–exciton annihilation in MEH-PPV by time-resolved spectroscopy: experiment and microscopic theory

2017 ◽  
Vol 19 (47) ◽  
pp. 31989-31996 ◽  
Author(s):  
Kilian Hader ◽  
Cristina Consani ◽  
Tobias Brixner ◽  
Volker Engel
Keyword(s):  
Transient Absorption ◽  
Laser Intensity ◽  
Microscopic Theory ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Spectroscopy Experiment ◽  
Exciton Annihilation

Transient absorption traces taken on samples of the polymer MEH-PPV are measured as a function of the laser intensity.

scholarly journals Transient absorption spectroscopy and photochemical reactivity of CAU-8

2015 ◽  
Vol 3 (15) ◽  
pp. 3607-3613 ◽  
Author(s):  
Herme G. Baldovi ◽  
Martin Krüger ◽  
Helge Reinsch ◽  
Mercedes Alvaro ◽  
Norbert Stock ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved ◽  
Photochemical Reactivity ◽  
Time Resolved Spectroscopy

Time-resolved spectroscopy has provided evidence of the nature of the transients upon irradiation of CAU-8 and the photochemical reactivity has been used to promote styrene polymerisation and linker transformation.

Roles of adsorption sites in electron transfer from CdS quantum dots to molecular catalyst cobaloxime studied by time-resolved spectroscopy

2016 ◽  
Vol 18 (26) ◽  
pp. 17389-17397 ◽  
Author(s):  
Yun Ye ◽  
Yuxing Xu ◽  
Lei Huang ◽  
Dayong Fan ◽  
Zhaochi Feng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Cds Quantum Dots ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Molecular Catalyst ◽  
Adsorption Sites

Electron transfer from CdS quantum dots (QDs) to cobaloxime (Co(dmgH)2pyCl) is demonstrated by transient absorption spectroscopy (TAS), and further confirmed using photoluminescence (PL) techniques.

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