scholarly journals Squaraine Dye for a Visibly Transparent All-Organic Optical Upconversion Device with Sensitivity at 1000 nm

2018 ◽  
Vol 10 (13) ◽  
pp. 11063-11069 ◽  
Author(s):  
Karen Strassel ◽  
Adrian Kaiser ◽  
Sandra Jenatsch ◽  
Anna C. Véron ◽  
Surendra B. Anantharaman ◽  
...  
Keyword(s):  
Squaraine Dye ◽  
Optical Upconversion

scholarly journals Chitosan as a Protective Matrix for the Squaraine Dye

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1171
Author(s):  
Halina Kaczmarek ◽  
Patryk Rybczyński ◽  
Piotr Maćczak ◽  
Aleksander Smolarkiewicz-Wyczachowski ◽  
Marta Ziegler-Borowska
Keyword(s):  
Solid State ◽  
Uv Radiation ◽  
Dye Degradation ◽  
Protective Coatings ◽  
Protective Action ◽  
High Energy ◽  
Modified Chitosan ◽  
Dye Release ◽  
Squaraine Dye ◽  
Chitosan Films

Chitosan was used as a protective matrix for the photosensitive dye-squaraine (2,4-bis[4-(dimethylamino)phenyl]cyclobutane-1,3-diol). The physicochemical properties of the obtained systems, both in solution and in a solid-state, were investigated. However, it was found that diluted chitosan solutions with a few percent additions of dye show an intense fluorescence, which is suppressed in the solid-state. This is related to the morphology of the heterogeneous modified chitosan films. The important advantage of using a biopolymer matrix is the prevention of dye degradation under the influence of high energy ultraviolet (UV) radiation while the dye presence improves the chitosan heat resistance. It is caused by mutual interactions between macromolecules and dye. Owing to the protective action of chitosan, the dye release in liquid medium is limited. Chitosan solutions with a few percent additions of squaraine can be used in biomedical imaging thanks to the ability to emit light, while chitosan films can be protective coatings resistant to high temperatures and UV radiation.

scholarly journals Shortwave infrared-absorbing squaraine dyes for all-organic optical upconversion devices

2021 ◽  
Author(s):  
Karen Strassel ◽  
Wei-Hsu Hu ◽  
Sonja Osbild ◽  
Daniele Padula ◽  
Daniel Rentsch ◽  
...  
Keyword(s):  
Squaraine Dyes ◽  
Shortwave Infrared ◽  
Optical Upconversion

Contribution of the 2 ^1Ag state to the third-order optical nonlinearity in a squaraine dye: errata

1994 ◽  
Vol 19 (22) ◽  
pp. 1909 ◽  
Author(s):  
James H. Andrews ◽  
John D. V. Khaydarov ◽  
Kenneth D. Singer
Keyword(s):  
Optical Nonlinearity ◽  
Third Order ◽  
The Third ◽  
Squaraine Dye

Three-step Fӧrster resonance energy transfer on amyloid fibril scaffold

2021 ◽  
Author(s):  
Galyna Gorbenko ◽  
Olga Zhytniakivska ◽  
Kateryna Vus ◽  
Uliana Tarabara ◽  
Valeriya Trusova
Keyword(s):  
Energy Transfer ◽  
Amyloid Fibril ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Thioflavin T ◽  
Squaraine Dye ◽  
Transfer Chain

The present study provides evidence that the energy transfer chain consisting of the benzothiazole dye Thioflavin T as an input donor, a phosphonium dye TDV and a squaraine dye SQ4...

scholarly journals Near-IR squaraine dye–loaded gated periodic mesoporous organosilica for photo-oxidation of phenol in a continuous-flow device

2015 ◽  
Vol 1 (8) ◽  
pp. e1500390 ◽  
Author(s):  
Parijat Borah ◽  
Sivaramapanicker Sreejith ◽  
Palapuravan Anees ◽  
Nishanth Venugopal Menon ◽  
Yuejun Kang ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Heterogeneous Catalysts ◽  
Near Infrared ◽  
Periodic Mesoporous Organosilica ◽  
Photo Oxidation ◽  
Mesoporous Organosilica ◽  
Squaraine Dye ◽  
Flow Device ◽  
Catalytically Active ◽  
Oxidation Of Phenol

Periodic mesoporous organosilica (PMO) has been widely used for the fabrication of a variety of catalytically active materials. We report the preparation of novel photo-responsive PMO with azobenzene-gated pores. Upon activation, the azobenzene gate undergoes trans-cis isomerization, which allows an unsymmetrical near-infrared squaraine dye (Sq) to enter into the pores. The gate closure by cis-trans isomerization of the azobenzene unit leads to the safe loading of the monomeric dye inside the pores. The dye-loaded and azobenzene-gated PMO (Sq-azo@PMO) exhibits excellent generation of reactive oxygen species upon excitation at 664 nm, which can be effectively used for the oxidation of phenol into benzoquinone in aqueous solution. Furthermore, Sq-azo@PMO as the catalyst was placed inside a custom-built, continuous-flow device to carry out the photo-oxidation of phenol to benzoquinone in the presence of 664-nm light. By using the device, about 23% production of benzoquinone with 100% selectivity was achieved. The current research presents a prototype of transforming heterogeneous catalysts toward practical use.

scholarly journals Theoretical Description for Chlorantraniliprole Electrochemical Determination, Assisted by Squaraine Dye Nano Ag2O2 Composite

2020 ◽  
Vol 11 (2) ◽  
pp. 9278-9284
Keyword(s):  
Mathematical Model ◽  
Reaction Mechanism ◽  
Bifurcation Analysis ◽  
Electrochemical Determination ◽  
Theoretical Description ◽  
The Other ◽  
Linear Stability Theory ◽  
Oxide Nanoparticles ◽  
Monotonic Instability ◽  
Squaraine Dye

The theoretical description for the chlorantraniliprole electrochemical determination, assisted by the hybrid composite of squaraine dye with Ag2O2 nanoparticles, has been described. The correspondent reaction mechanism has been proposed, and the correspondent mathematical model has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been shown that the chlorantraniliprole electrochemical anodic determination on high potential may be efficiently provided by silver (I, III) oxide nanoparticles, stabilized by the squaraine dye. On the other hand, the oscillatory and monotonic instability is also possible, being caused by DEL influences of the electrochemical stage.

Improving the performance of P3HT/PCBM solar cells with squaraine dye

2013 ◽  
Author(s):  
Jing-Shun Huang ◽  
Tenghooi Goh ◽  
Xiaokai Li ◽  
Matthew Y. Sfeir ◽  
Elizabeth A. Bielinski ◽  
...  
Keyword(s):  
Solar Cells ◽  
Squaraine Dye

Squaraine Dye as an Exciton Trap for Cyanine J-Aggregates in a Solution

2008 ◽  
Vol 112 (51) ◽  
pp. 20458-20462 ◽  
Author(s):  
Roman S. Grynyov ◽  
Alexander V. Sorokin ◽  
Gleb Ya. Guralchuk ◽  
Svetlana L. Yefimova ◽  
Igor A. Borovoy ◽  
...  
Keyword(s):  
Squaraine Dye ◽  
J Aggregates
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