Comparison between J-aggregates in a self-assembled multilayer and polymer-bound J-aggregates in solution: a steady-state and time-resolved spectroscopic study

2002 ◽  
Vol 1 (6) ◽  
pp. 395-406 ◽  
Author(s):  
Els Rousseau ◽  
Marc M. Koetse ◽  
Mark Van der Auweraer ◽  
Frans C. De Schryver
Keyword(s):  
Steady State ◽  
Spectroscopic Study ◽  
Time Resolved ◽  
J Aggregates ◽  
Self Assembled

Steady state and time resolved spectroscopic study of QD–DNA interaction

2013 ◽  
Vol 134 ◽  
pp. 401-407 ◽  
Author(s):  
Bipattaran Paramanik ◽  
Santanu Bhattacharyya ◽  
Amitava Patra
Keyword(s):  
Steady State ◽  
Spectroscopic Study ◽  
Dna Interaction ◽  
Time Resolved

STEADY STATE AND TIME RESOLVED SPECTROSCOPIC STUDY OF CONFINED DYE INSIDE γ-CD IN PRESENCE OF Au NANOPARTICLES

2011 ◽  
Vol 10 (04n05) ◽  
pp. 867-871
Author(s):  
TAPASI SEN ◽  
AMITAVA PATRA
Keyword(s):  
Steady State ◽  
Spectroscopic Study ◽  
Au Nanoparticles ◽  
Light Harvesting ◽  
Photophysical Properties ◽  
Photoluminescence Quenching ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Potential Applications

The photophysical properties of the confined dye inside the γ-CD in presence of Au nanoparticles have been studied by steady state and time resolved spectroscopy. It is found that the photoluminescence quenching of C480 dye increases from 26% to 49% due to confinement of dye inside γ-CD. The designing of such new optical based materials having coumarin 480 dye inside the γ-CD in presence of Au nanoparticles may have potential applications for light harvesting system.

scholarly journals Photophysical properties of two novel tetraphenylporphyrins substituted by guanidiniocarbonyl and monocyclic guanidine groups

2001 ◽  
Vol 3 (3) ◽  
pp. 147-151 ◽  
Author(s):  
Pavel Kubát ◽  
Kamil Lang ◽  
Vladimír Král ◽  
Franz P. Schmidtchen
Keyword(s):  
Steady State ◽  
Quantum Yield ◽  
Singlet Oxygen ◽  
Electronic Absorption Spectra ◽  
Photophysical Properties ◽  
Soret Band ◽  
Monomeric Form ◽  
High Quantum Yield ◽  
Time Resolved ◽  
J Aggregates

Photophysical properties of two novel guanidiniocarbonyl (I) and monocyclic guanidine (II) tetraphenylporphyrins and their interaction with DNA were investigated by steady-state and time-resolved absorption and emission spectroscopies.Istays predominantly monomeric in aqueous solutions. It produces singlet oxygen with high quantum yield(ΦΔ=0.67)that is typical for monomeric porphyrins. The electronic absorption spectra ofIare not influenced by interaction with DNA. This is in contrast with monomeric tetratolylporphyrins bearing phosphonium,ammonium and pyridinium groups where the formation of stable complexes with DNA is accompanied by a characteristic red shift of the Soret band.IIextensively forms Hand J-aggregates,which do not produce singlet oxygen(ΦΔ<0.01). In the presence of DNA only a small fraction ofIIremains in monomeric form that is bound to DNA exterior.

Steady State and Time Resolved Spectroscopic Study of CdSe and CdSe/ZnS QDs:FRET Approach

2016 ◽  
Vol 26 (4) ◽  
pp. 1249-1259 ◽  
Author(s):  
M. G. Kotresh ◽  
K. S. Adarsh ◽  
M. A. Shivkumar ◽  
Sanjeev R. Inamdar
Keyword(s):  
Steady State ◽  
Spectroscopic Study ◽  
Time Resolved

scholarly journals Time-Resolved Spectroscopy of Polymethine J-Aggregates

1991 ◽  
Vol 11 (1) ◽  
pp. 1-12 ◽  
Author(s):  
K.-H. Feller ◽  
R. Gadonas ◽  
V. Krasauskas ◽  
V. Fidler ◽  
S. Vajda
Keyword(s):  
Steady State ◽  
Transient Absorption ◽  
Decay Kinetics ◽  
Time Resolved ◽  
Absorption And Fluorescence Spectroscopy ◽  
Transient Absorption Spectra ◽  
J Aggregates ◽  
Exciton Annihilation ◽  
Deactivation Process ◽  
Aggregate Structures

The deactivation process of J-aggregates of DDEOCI (3,3'-diethyl-5,5'-diphenyl-9-ethyl-oxacarbocyanine iodide) was investigated by means of steady-state and time-resolved absorption and fluorescence spectroscopy. The decay kinetics as well as the transient absorption spectra have been analyzed including different aggregate structures and exciton-exciton annihilation.

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