Controllable Supramolecular Architectures for Modulating Optical Properties on the Molecular Aggregation Level

2014 ◽  
Vol 2014 (23) ◽  
pp. 5004-5009 ◽  
Author(s):  
Runsheng Jiang ◽  
Zheng Xue ◽  
Yongjun Li ◽  
Zhihong Qin ◽  
Yuliang Li ◽  
...  
Keyword(s):  
Optical Properties ◽  
Molecular Aggregation ◽  
Supramolecular Architectures ◽  
Aggregation Level

Temperature-Tuning of Optical Properties and Molecular Aggregation in AnE-PVstat Copolymer Solution

2018 ◽  
Vol 122 (7) ◽  
pp. 3965-3969 ◽  
Author(s):  
A. Saaidia ◽  
M. A. Saidani ◽  
E. Hleli ◽  
S. Alam ◽  
C. Ulbricht ◽  
...  
Keyword(s):  
Optical Properties ◽  
Molecular Aggregation ◽  
Copolymer Solution ◽  
Temperature Tuning

Study of Optical Properties and Molecular Aggregation of Conjugated Low Band Gap Copolymers: PTB7 and PTB7-Th

2015 ◽  
Vol 119 (43) ◽  
pp. 24643-24648 ◽  
Author(s):  
Fatima Bencheikh ◽  
David Duché ◽  
Carmen M. Ruiz ◽  
Jean-Jacques Simon ◽  
Ludovic Escoubas
Keyword(s):  
Optical Properties ◽  
Band Gap ◽  
Molecular Aggregation ◽  
Low Band Gap

9-Anthryl-capped DPP-based dyes: aryl spacing induced differential optical properties

2016 ◽  
Vol 4 (34) ◽  
pp. 8006-8013 ◽  
Author(s):  
Shian Ying ◽  
Mingshuai Chen ◽  
Zhongwei Liu ◽  
Kai Zhang ◽  
Yuyu Pan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Fluorescence Properties ◽  
Molecular Aggregation ◽  
Aggregation Behaviors

The conjugation bridges of DPP derivatives could significantly tune and alter molecular aggregation behaviors and fluorescence properties.

scholarly journals Photoluminescence and nonlinear optical properties of triple stranded helicates based metallo-supramolecular architectures

2021 ◽  
Vol 186 ◽  
pp. 109036
Author(s):  
K. Waszkowska ◽  
Y. Cheret ◽  
A. Zawadzka ◽  
A. Korcala ◽  
J. Strzelecki ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Supramolecular Architectures

scholarly journals Spectral properties of tetraanionic porphyrin in formamide colloids of layered double hydroxides

2008 ◽  
Vol 6 (4) ◽  
pp. 569-574 ◽  
Author(s):  
Juraj Bujdák ◽  
Nobuo Iyi
Keyword(s):  
Optical Properties ◽  
Layered Double Hydroxides ◽  
Visible Region ◽  
Colloidal Suspensions ◽  
Soret Band ◽  
Molecular Aggregation ◽  
Detailed Characterization ◽  
Intensity Changes ◽  
Two Peaks ◽  
Double Hydroxides

AbstractFormamide colloidal suspensions of layered double hydroxides (LDHs) with anionic dye, meso-tetrakis(4-sulfonatophenyl)porphine (TPPS) were prepared. Optical properties of these suspensions were investigated by means of absorption and fluorescence spectroscopies in the visible region. For more detailed characterization, second derivative curves of the spectra were calculated. The adsorption of the dye on LDH nanosheets led to partial molecular aggregation, reflected in significant changes of the dye optical properties. The Soret band in the absorption spectra was split into two peaks and decreased in intensity. Changes were observed also for the Q-bands. The molecular aggregation significantly quenched the emission of the dye. The low intensity emission from dye H-aggregates was identified at slightly longer wavelengths. The molecular aggregation increased with the dye/LDH ratio. At low dye loadings, the optical properties were very similar to the dye solution. The yields of the dye molecular aggregation increased with LDH surface charge.

Photoisomerizable azobenzene dyes incorporated into polymers and dendrimers. Influence of the molecular aggregation on the nonlinear optical properties

2021 ◽  
pp. 109551
Author(s):  
Fabián Cuétara-Guadarrama ◽  
Mireille Vonlanthen ◽  
Kendra Sorroza-Martínez ◽  
Israel González-Méndez ◽  
Ernesto Rivera
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Molecular Aggregation

scholarly journals Sub-100 nanometer silver doped gold–cysteine supramolecular assemblies with enhanced nonlinear optical properties

2019 ◽  
Vol 21 (23) ◽  
pp. 12091-12099 ◽  
Author(s):  
Hussein Fakhouri ◽  
Martina Perić ◽  
Franck Bertorelle ◽  
Philippe Dugourd ◽  
Xavier Dagany ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Property ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Supramolecular Assemblies ◽  
New Class ◽  
Unique Structure ◽  
Property Relationship ◽  
Supramolecular Architectures

The ability of gold(i) thiolates to self-assemble into supramolecular architectures opens the route for a new class of nanomaterials with a unique structure–optical property relationship.

scholarly journals Tailoring the optical properties of poly(3-hexylthiophene) by emulsion processing using polymeric macrosurfactants

2015 ◽  
Vol 3 (9) ◽  
pp. 2065-2071 ◽  
Author(s):  
F. D. Fleischli ◽  
N. Ghasdian ◽  
T. K. Georgiou ◽  
N. Stingelin
Keyword(s):  
Optical Properties ◽  
Molecular Aggregation ◽  
Water Dispersion ◽  
Emulsion Processing

Here we demonstrate that the use of macrosurfactants in the production of poly(3-hexylthiophene) (P3HT):water dispersion allows to drastically change the semiconductor's molecular aggregation, leading to pronounced H- or J-like behaviour depending on the macrosurfactant used and the conditions selected to produce the dispersions.

Design of objective lens for 200-kV high-resolution electron microscopes

1983 ◽  
Vol 41 ◽  
pp. 314-315
Author(s):  
K. Tsuno ◽  
T. Honda ◽  
Y. Harada ◽  
M. Naruse
Keyword(s):  
Optical Properties ◽  
Computer Technology ◽  
Axial Magnetic Field ◽  
Chromatic Aberration ◽  
Objective Lens ◽  
Resolution Electron ◽  
Correction Of Astigmatism ◽  
Three Stages ◽  
Electron Microscopes ◽  
Stage 1

Developement of computer technology provides much improvements on electron microscopy, such as simulation of images, reconstruction of images and automatic controll of microscopes (auto-focussing and auto-correction of astigmatism) and design of electron microscope lenses by using a finite element method (FEM). In this investigation, procedures for simulating the optical properties of objective lenses of HREM and the characteristics of the new lens for HREM at 200 kV are described.The process for designing the objective lens is divided into three stages. Stage 1 is the process for estimating the optical properties of the lens. Firstly, calculation by FEM is made for simulating the axial magnetic field distributions Bzc of the lens. Secondly, electron ray trajectory is numerically calculated by using Bzc. And lastly, using Bzc and ray trajectory, spherical and chromatic aberration coefficients Cs and Cc are numerically calculated. Above calculations are repeated by changing the shape of lens until! to find an optimum aberration coefficients.

Optical Properties of HVEM Accelerators

1975 ◽  
Vol 33 ◽  
pp. 180-181
Author(s):  
A. Strojnik ◽  
J.W. Scholl ◽  
V. Bevc
Keyword(s):  
Optical Properties ◽  
Electron Accelerator ◽  
Systematic Investigation ◽  
Electron Source ◽  
High Brightness ◽  
The Past ◽  
Wide Range ◽  
Optical Behavior

The electron accelerator, as inserted between the electron source (injector) and the imaging column of the HVEM, is usually a strong lens and should be optimized in order to ensure high brightness over a wide range of accelerating voltages and illuminating conditions. This is especially true in the case of the STEM where the brightness directly determines the highest resolution attainable. In the past, the optical behavior of accelerators was usually determined for a particular configuration. During the development of the accelerator for the Arizona 1 MEV STEM, systematic investigation was made of the major optical properties for a variety of electrode configurations, number of stages N, accelerating voltages, 1 and 10 MEV, and a range of injection voltages ϕ0 = 1, 3, 10, 30, 100, 300 kV).

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