scholarly journals The influence of phthalocyanine aggregation in complexes with CdSe/ZnS quantum dots on the photophysical properties of the complexes

2016 ◽  
Vol 7 ◽  
pp. 1018-1027 ◽  
Author(s):  
Irina V Martynenko ◽  
Anna O Orlova ◽  
Vladimir G Maslov ◽  
Anatoly V Fedorov ◽  
Kevin Berwick ◽  
...  
Keyword(s):  
Experimental Data ◽  
Quantum Dots ◽  
Photodynamic Therapy ◽  
Energy Transfer ◽  
Steady State ◽  
Physical Model ◽  
Photophysical Properties ◽  
Spatial Arrangement ◽  
Energy Transfer Efficiency ◽  
Steady State Absorption

The formation of nonluminescent aggregates of aluminium sulfonated phthalocyanine in complexes with CdSe/ZnS quantum dots causes a decrease of the intracomplex energy transfer efficiency with increasing phthalocyanine concentration. This was confirmed by steady-state absorption and photoluminescent spectroscopy. A corresponding physical model was developed that describes well the experimental data. The results can be used at designing of QD/molecule systems with the desired spatial arrangement for photodynamic therapy.

Syntheses and studies of electron/energy transfer of new dyads based on an unsymmetrical perylene diimide incorporating chelating 1,10-phenanthroline and its corresponding square-planar complexes with dichloroplatinum(ii) and dichloropalladium(ii )

2018 ◽  
Vol 47 (22) ◽  
pp. 7422-7430 ◽  
Author(s):  
Sebile Işık Büyükekşi ◽  
Ahmet Karatay ◽  
Nursel Acar ◽  
Betül Küçüköz ◽  
Ayhan Elmali ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Steady State ◽  
Electron Energy ◽  
Photophysical Properties ◽  
Perylene Diimide ◽  
Square Planar ◽  
Square Planar Complexes ◽  
Steady State Absorption

Photophysical properties of new dyads have been studied with steady-state absorption and TDDFT.

scholarly journals Tunable energy transfer efficiency based on the composite of mixed CdSe quantum dots and elastomeric film

2008 ◽  
Vol 92 (5) ◽  
pp. 051906 ◽  
Author(s):  
C. W. Chen ◽  
C. H. Wang ◽  
Y. F. Chen ◽  
C. W. Lai ◽  
P. T. Chou
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Energy Transfer Efficiency ◽  
Transfer Efficiency ◽  
Cdse Quantum Dots

Photophysical properties and photodynamic therapy activity of ameso-tetra(4-carboxyphenyl)porphyrin tetramethyl ester–graphene quantum dot conjugate

2019 ◽  
Vol 43 (11) ◽  
pp. 4518-4524 ◽  
Author(s):  
Muthumuni Managa ◽  
Bokolombe Pitchou Ngoy ◽  
Tebello Nyokong
Keyword(s):  
Quantum Dots ◽  
Photodynamic Therapy ◽  
Quantum Dot ◽  
Photophysical Properties ◽  
Graphene Quantum Dots ◽  
Graphene Quantum Dot

Ameso-tetra(4-carboxyphenyl)porphyrin tetramethyl ester and the Zn and GaCl derivatives were π–π stacked with graphene quantum dots to form conjugates and their photophysical and photodynamic therapy properties were investigated.

A Spatially Resolved Physical Model for Dynamic Modeling of a Novel Hybrid Reformer-Electrolyzer-Purifier (REP) for Production of Hydrogen

2017 ◽  
Author(s):  
Derek McVay ◽  
Li Zhao ◽  
Jack Brouwer ◽  
Fred Jahnke ◽  
Matt Lambrech
Keyword(s):  
Experimental Data ◽  
Carbon Dioxide ◽  
Steady State ◽  
Fuel Cell ◽  
Physical Model ◽  
Physical Models ◽  
Co2 Removal ◽  
Molten Carbonate ◽  
Spatially Resolved ◽  
Production Of Hydrogen

A molten carbonate electrolysis cell (MCEC) is capable of separating carbon dioxide from methane reformate while simultaneously electrolyzing water. Methane reformate, for this study, primarily consists of carbon dioxide, hydrogen, methane, and a high percentage of water. Carbon dioxide is required for the operation of a MCEC since a carbonate ion is formed and travels from the reformate channel to the sweep gas channel. In this study, a spatially resolved physical model was developed to simulate an MCEC in a novel hybrid reformer electrolyzer purifier (REP) configuration for high purity hydrogen production from methane and water. REP effectively acts as an electrochemical CO2 purifier of hydrogen. In order to evaluate the performance of REP, a dynamic MCEC stack model was developed based upon previous high temperature molten carbonate fuel cell modeling studies carried out at the National Fuel Cell Research Center at the University of California, Irvine. The current model is capable of capturing both steady state performance and transient behavior of an MCEC stack using established physical models originating from first principals. The model was first verified with REP experimental data at steady state which included spatial temperature profiles. Preliminary results show good agreement with experimental data in terms of spatial distribution of temperature, current density, voltage, and power. The combined effect of steam methane reformation (SMR) and water electrolysis with electrochemical CO2 removal results in 96% dry-basis hydrogen at the cathode outlet of the MCEC. Experimental measurements reported 98% dry-basis hydrogen at the cathode outlet.

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