scholarly journals Trapping and Deposition of Dye–Molecule Nanoparticles in the Nanogap of a Plasmonic Antenna

ACS Omega ◽  
2018 ◽  
Vol 3 (5) ◽  
pp. 4878-4883 ◽  
Author(s):  
Christophe Pin ◽  
Shutaro Ishida ◽  
Genta Takahashi ◽  
Kota Sudo ◽  
Tuyoshi Fukaminato ◽  
...  
Keyword(s):  
Dye Molecule

Triggered emission of indistinguishable photons from an organic dye molecule

2021 ◽  
Vol 118 (20) ◽  
pp. 204002
Author(s):  
Pietro Lombardi ◽  
Maja Colautti ◽  
Rocco Duquennoy ◽  
Ghülam Murtaza ◽  
Prosenjit Majumder ◽  
...  
Keyword(s):  
Organic Dye ◽  
Dye Molecule

Nonlinear Features of Fano Resonance: A QM/EM Study

2021 ◽  
Author(s):  
Jin Sun ◽  
Zongling Ding ◽  
Yuanqin Yu ◽  
WanZhen Liang
Keyword(s):  
Hybrid Systems ◽  
Fano Resonance ◽  
Hybrid Approach ◽  
Nonlinear Features ◽  
Fano Effects ◽  
Dye Molecule

The nonlinear Fano effects on the absorption of hybrid systems composed of a silver nanosphere and an indoline dye molecule have been systematically investigated by the hybrid approach, which combines...

A simple supramolecular assay for drug detection in urine

2017 ◽  
Vol 53 (63) ◽  
pp. 8842-8845 ◽  
Author(s):  
Silvia Sonzini ◽  
Jade A. McCune ◽  
Peter Ravn ◽  
Oren A. Scherman ◽  
Christopher F. van der Walle
Keyword(s):  
Colorimetric Assay ◽  
Neutral Red ◽  
Peptide Drug ◽  
Drug Detection ◽  
Therapeutic Peptide ◽  
Novel Method ◽  
Dye Molecule

A supramolecular colorimetric assay utilising the macrocyclic host cucurbit[7]uril with a commercial dye molecule, neutral red, was evaluated as a novel method for drug detection in urine of a model therapeutic peptide drug Octreotide.

scholarly journals Synthesis of Novel Crosslinked Chitosans with a Higher Fatty Diacid Diglycidyl and Their Adsorption Abilities towards Acid Dyes

2003 ◽  
Vol 21 (5) ◽  
pp. 439-449 ◽  
Author(s):  
Yoshiaki Shimizu ◽  
Atsushi Taga ◽  
Hitoshi Yamaoka
Keyword(s):  
Chemical Structure ◽  
Crosslinking Agent ◽  
Considerable Extent ◽  
Degree Of Substitution ◽  
Acid Orange 7 ◽  
Acid Dyes ◽  
Ph Values ◽  
Crosslinked Chitosan ◽  
Adsorbent Materials ◽  
Dye Molecule

Novel chitosan-based adsorbent materials with a higher fatty diacid diglycidyl as the crosslinking agent were synthesized and the adsorption abilities of the resulting polymers evaluated towards typical acid dyes. The successful formation of a crosslinked structure was confirmed via infrared spectroscopic measurements and the solubility of the polymer towards 10% aqueous solutions of acetic and formic acids determined. At higher dye concentrations, the adsorption abilities of the crosslinked chitosan towards hydrophilic CI Acid Orange 7 and CI Acid Red 1 increased with decreasing degree of substitution. However, at lower dye concentrations, the crosslinked chitosan with the lowest degree of substitution exhibited the lowest adsorption capability. With such hydrophilic acid dyes, the extent of adsorption decreased significantly as the pH of the solution increased. On the other hand, CI Acid Red 138, which contains a dodecyl group in the chemical structure, was adsorbed to a considerable extent even at higher pH values, suggesting hydrophobic interaction between the alkyl group in the dye molecule and the hydrophobic crosslinker.

scholarly journals A New Three-Component Photo-Initiating System for Visible Light Recording of Volume Holograms with Single-Pulsed Laser

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3517
Author(s):  
Horst Berneth ◽  
Friedrich Karl Bruder ◽  
Thomas Fäcke ◽  
Sven Hansen ◽  
Koichi Kawamura ◽  
...  
Keyword(s):  
Alkyl Radical ◽  
Pulsed Laser ◽  
Holographic Recording ◽  
Radical Species ◽  
Holographic Gratings ◽  
Initiation System ◽  
Volume Holograms ◽  
Recording Material ◽  
Safranine O ◽  
Dye Molecule

Versatile substituted electron-deficient trichloromethylarenes can easily be synthesized and combined with a Safranine O/triarylalkylborate salt to form a highly efficient three-component photo-initiation system that starts free radical polymerization to finally form holographic gratings with a single-pulsed laser. The mechanism of this photo-initiation most likely relies on an electron transfer from the borate salt into the semi-occupied HOMO of the excited dye molecule Safranine O, which after fragmentation generates an initiating alkyl radical and longer-lived dye radical species. This dye radical is most probably oxidized by the newly introduced trichloromethylarene derivative as an electron acceptor. The two generated radicals from one absorbed photon initiate the photopolymerization and form index gratings in a suitable holographic recording material. This process is purely photonic and does not require further non-photonic post treatments.

scholarly journals The synthesis of novel BODIPY compounds for DSSC applications.

2021 ◽  
Author(s):  
Devin Douglas Machin
Keyword(s):  
Fine Tuning ◽  
Great Promise ◽  
Device Performance ◽  
Dye Molecules ◽  
Dye Sensitized ◽  
Redox Active ◽  
Boron Dipyrromethene ◽  
Photovoltaic Technologies ◽  
Active Donor ◽  
Dye Molecule

The dye-sensitized solar cell (DSSC) represents one of the most promising next-generation photovoltaic technologies. In addition, the DSSC manifold provides an exceptional platform to further appreciate photoinduced electron transfer and the fundamental features required for light-harvesting. The dye molecule is a key component in the DSSC and has achieved minor success utilizing both an organic and inorganic photosensitizers. DSSC’s show great promise owing to their inexpensive synthesis tunable optical and electrochemical properties, and a plethora of design possibilities. The typical anatomy of organic and inorganic DSSC dyes are comprised of a redox-active donor/chromophore (D) that is connected, through a conjugated linker (π), to an acceptor (A) capable of anchoring to titania (TiO2). Fine tuning each of these components can shift the absorption spectrum increasing the overall device efficiency. Boron-dipyrromethene (BODIPY) is an attractive moiety to integrate into DSSC dyes. BODIPY’s rigid organic framework should be able to improve dye stability while the high extinction coefficients of BODIPY based molecules have the potential to increase device performance. Herein, we explore the synthesis and physicochemical properties of BODIPY in an attempt to synthesize efficient DSSC dye molecules and efficient photovoltaic technologies.

scholarly journals FOUR-WAVE MIXING TECHNIQUE AND COHERENCE EFFECT ON ELECTRONIC STATES OF DYE MOLECULE

1987 ◽  
Vol 48 (C7) ◽  
pp. C7-521-C7-523
Author(s):  
M. T. PORTELLA ◽  
P. MONTELMACHER ◽  
A. BOURDON ◽  
P. EVESQUE ◽  
J. DURAN
Keyword(s):  
Electronic States ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Coherence Effect ◽  
Dye Molecule

Effect of Calcination Temperature on Photocatalytic Degradation Performance of Electrospun β-Ga2O3 Nanofibers

2021 ◽  
Vol 21 (7) ◽  
pp. 4016-4021
Author(s):  
Myeongjun Ji ◽  
Jeong Hyun Kim ◽  
Cheol-Hui Ryu ◽  
Young-In Lee
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Crystallite Size ◽  
Calcination Temperature ◽  
Composite Nanofibers ◽  
Physicochemical Analysis ◽  
Gallium Nitrate ◽  
Efficient Charge ◽  
Higher Temperature ◽  
Dye Molecule

In the present work, Ga2O3 nanofibers were successfully synthesized by electrospinning a solution of polyvinylpyrrolidone (PVP) and gallium nitrate, followed by temperature-controlled calcination treatment of the as-spun PVP and gallium nitrate composite nanofibers. The crystallinity and crystallite size of the Ga2O3 nanofibers can be readily controlled by varying the calcination temperature. From the physicochemical analysis results of the synthesized nanofiber, it was found that the nanofiber calcined at a higher temperature showed a higher crystallinity and a larger crystallite size. The photocatalytic degradation results on rhodamine-B (Rho B) revealed that the photocatalytic activity of the Ga2O3 nanofibers can be improved by optimizing the conflicting characteristics, crystallinity and crystallite size, through the control of the calcination temperature. The photocatalytic activity of a nanofiber calcined at 800 °C for the degradation of Rho B under ultraviolet irradiation exhibits 2.39 and 1.16 times higher than that of nanofibers synthesized at 700 °C and 900 °C, respectively, which is ascribed to relatively efficient charge transfer and dye molecule adsorption by its proper crystallinity and crystallite size.

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