Effect of CdSe nanoparticles on the fluorescence spectra of conjugate polymer P3HT: An experimental and theoretical study

2016 ◽  
Vol 380 (45) ◽  
pp. 3866-3869 ◽  
Author(s):  
Nouha Mastour ◽  
Habib Bouchriha
Keyword(s):  
Fluorescence Spectra ◽  
Theoretical Study ◽  
Cdse Nanoparticles ◽  
Conjugate Polymer

scholarly journals Erratum to: Theoretical Study of the Electronic Excited States and Fluorescence Spectra of Squaraine in Solution

2014 ◽  
Vol 43 (9-10) ◽  
pp. 1644-1644
Author(s):  
Hitoshi Ozawa ◽  
Kazunori Yashiro ◽  
Takuma Yamamoto ◽  
Satoshi Yabushita
Keyword(s):  
Excited States ◽  
Fluorescence Spectra ◽  
Theoretical Study ◽  
Electronic Excited States

The Aspect Ratio Dependence of the Fluorescence of Gold Nanorods: An Experimental and Theoretical Study

2005 ◽  
Vol 900 ◽  
Author(s):  
Susie Eustis ◽  
Mostafa A. El-Sayed
Keyword(s):  
Excited State ◽  
Gold Nanorods ◽  
Fluorescence Spectra ◽  
Theoretical Study ◽  
Relaxation Mechanism ◽  
Enhanced Fluorescence ◽  
Band Shape ◽  
Aspect Ratios ◽  
Enhancement Factors ◽  
Nonradiative Processes

ABSTRACTExperimental observations and theoretical treatments are carried out for the band shape and relative intensity of the emission from gold nanorods of various aspect ratios in the range between 2.6 (1.5 theory) and 6.3 (9 theory). The calculation of the fluorescence spectra requires knowledge of the nanorod size distribution, the enhancement factors and the shape of the un-enhanced fluorescence spectrum. The comparison between the observed and calculated fluorescence band shapes is found to be good. The calculated changes in the relative intensities with aspect ratios are found to be much greater than that observed experimentally. This is due to the fact that for the observed emission of all the rods studied, nonradiative processes dominate the relaxation mechanism of the excited state, a fact that was not included in the theoretical treatments. Experimental results and theoretical treatments will be presented.

Theoretical study of the mechanism of the solvent dependency of ESIPT in HBT

2021 ◽  
Author(s):  
Keiji Naka ◽  
Hirofumi Sato ◽  
Masahiro Higashi
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Fluorescence Spectra ◽  
Theoretical Study ◽  
Intramolecular Proton Transfer

2-(2′-hydroxyphenyl)-benzothiazole (HBT) has been widely studied for use as a system for excited-state intramolecular proton transfer. However, the mechanism underlying the solvent dependency of HBT fluorescence spectra remains unclear. In...

Theoretical Study of the Electronic Excited States and Fluorescence Spectra of Squaraine in Solution

2014 ◽  
Vol 43 (9-10) ◽  
pp. 1625-1643 ◽  
Author(s):  
Hitoshi Ozawa ◽  
Kazunori Yashiro ◽  
Takuma Yamamoto ◽  
Satoshi Yabushita
Keyword(s):  
Excited States ◽  
Fluorescence Spectra ◽  
Theoretical Study ◽  
Electronic Excited States

Theoretical Study of Fluorescence Spectra Utilizing the pKaValues of Acids in Their Excited States

2013 ◽  
Vol 90 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Miyabi Hiyama ◽  
Hidefumi Akiyama ◽  
Kenta Yamada ◽  
Nobuaki Koga
Keyword(s):  
Excited States ◽  
Fluorescence Spectra ◽  
Theoretical Study

Raman And Fluorescence Spectra Observed in Laser Microprobe Measurements of Several Compositions in the Ln-Ba-Cu-O System

1990 ◽  
Vol 48 (2) ◽  
pp. 278-279
Author(s):  
Edgar S. Etz ◽  
Thomas D. Schroeder ◽  
Winnie Wong-Ng
Keyword(s):  
Fluorescence Spectra ◽  
Single Phase ◽  
X Ray Diffraction ◽  
Ceramic Powders ◽  
Conventional Solid State Reaction ◽  
X Ray ◽  
Raman Microprobe ◽  
Methods Of Synthesis ◽  
Compositional Homogeneity ◽  
Processing Techniques

We are investigating by Raman microprobe measurements the superconducting and related phases in the LnBa2Cu3O7-x (for x=0 to 1) system where yttrium has been replaced by several of the lanthanide (Ln = Nd,Sm,Eu,Ho,Er) elements. The aim is to relate the observed optical spectra (Raman and fluorescence) to the compositional and structural properties of these solids as part of comprehensive materials characterization. The results are correlated with the methods of synthesis, the processing techniques of these materials, and their superconducting properties. Of relevance is the substitutional chemistry of these isostructural systems, the differences in the spectra, and their microanalytical usefulness for the detection of impurity phases, and the assessment of compositional homogeneity. The Raman spectra of most of these compounds are well understood from accounts in the literature.The materials examined here are mostly ceramic powders prepared by conventional solid state reaction techniques. The bulk samples are of nominally single-phase composition as determined by x-ray diffraction.

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