Title : ( Synthesis and Spectral Characteristics of Nove lFluorescentDyes Based on Pyrimido[4,5-d ][1, 2,4 ]triazolo[4,3-a ]pyrimidine )
Authors: manijeh mohadeszadeh , Mohammad Rahimizadeh , Hossein Eshghi , Ali Shiri , Mostafa Gholizadeh , Alireza Shams ,
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Abstract
Different derivativesofanovel heterocyclic system, i.e. ,pyrimido[4,5-d ][1, 2,4 ]triazolo[4,3-a ]pyrimidine, are synthesized in moderate-to-good yields.These compounds exhibit excellent photochromism upon photoirradiation. Th ephotophysical characterizations of these new compounds were evaluated by UV/VIS absorption and fluorescence emission studies.The emission spectra in various solvents are also presentedand discussed. Th echanges are due to the intramolecular H-bonding of pyrimido-triazolo-pyrimidine with HO, and photoinduced electron and general solvent effect. These compounds display high fluorescence quantum yields and are reported as new fluorophores.
Keywords
, Synthesis- Fluorescent Dyes- Pyrimido[4, 5-d ][1, 2, 4 ]triazolo[4, 3-a ]pyrimidine
@article{paperid:1047615,
author = {Mohadeszadeh, Manijeh and Rahimizadeh, Mohammad and Eshghi, Hossein and Shiri, Ali and Gholizadeh, Mostafa and Shams, Alireza},
title = {Synthesis and Spectral Characteristics of Nove lFluorescentDyes Based on Pyrimido[4,5-d ][1, 2,4 ]triazolo[4,3-a ]pyrimidine},
journal = {Helvetica Chimica Acta},
year = {2015},
volume = {98},
number = {4},
month = {April},
issn = {0018-019X},
pages = {474--481},
numpages = {7},
keywords = {Synthesis- Fluorescent Dyes- Pyrimido[4;5-d ][1; 2;4 ]triazolo[4;3-a ]pyrimidine},
}
%0 Journal Article
%T Synthesis and Spectral Characteristics of Nove lFluorescentDyes Based on Pyrimido[4,5-d ][1, 2,4 ]triazolo[4,3-a ]pyrimidine
%A Mohadeszadeh, Manijeh
%A Rahimizadeh, Mohammad
%A Eshghi, Hossein
%A Shiri, Ali
%A Gholizadeh, Mostafa
%A Shams, Alireza
%J Helvetica Chimica Acta
%@ 0018-019X
%D 2015
