Fluorescence Properties of Diphenylthiazolo[4,5-b]pyrazines Tuned by Donor-Acceptor Substituent Effects

2015 ◽  
Vol 91 (4) ◽  
pp. 807-813 ◽  
Author(s):  
Tatsuki Nakagawa ◽  
Minoru Yamaji ◽  
Shojiro Maki ◽  
Haruki Niwa ◽  
Takashi Hirano
Keyword(s):  
Substituent Effects ◽  
Fluorescence Properties ◽  
Acceptor Substituent ◽  
Donor Acceptor

scholarly journals Bicyclic 1,3a,6a-Triazapentalene Chromophores: Synthesis, Spectroscopy and Their Use as Fluorescent Sensors and Probes

Chemosensors ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 16
Author(s):  
Yingchun Wang ◽  
Tomas Opsomer ◽  
Wim Dehaen
Keyword(s):  
Stokes Shift ◽  
Substituent Effects ◽  
Visible Spectrum ◽  
Fluorescent Sensors ◽  
Biological Imaging ◽  
Fluorescent Imaging ◽  
Fluorescence Properties ◽  
Imaging Probes ◽  
Synthetic Methodologies ◽  
Aromatic Heterocyclic

The 1,3a,6a-triazapentalene (TAP) is an aromatic heterocyclic fluorescent dye with interesting features such as its small size, large Stokes shift, solvatochromism, and emission wavelengths that are spread across the visible spectrum. TAPs have been synthesized via different synthetic strategies involving click−cyclization−aromatization domino reactions, gold-catalyzed cyclization of propargyl triazoles or triazolization of acetophenones. As a result, TAPs with diverse substitution patterns were obtained, showing varying fluorescence properties. Based on these properties, several TAPs have been selected and studied as fluorescent imaging probes in living cells and as sensors. This mini review provides an overview of the research on the bicyclic TAPs and does not comment on the literature about benzo or otherwise fused systems. The synthetic methodologies for the preparation of TAPs, the substituent effects on the fluorescence properties, and the behavior of the TAP core as an element of biological imaging probes and sensors are discussed.

Carbazole-modified thiazolo[3,2-c][1,3,5,2]oxadiazaborinines exhibiting aggregation-induced emission and mechanofluorochromism

2021 ◽  
Author(s):  
Mykhaylo A. Potopnyk ◽  
Mykola Kravets ◽  
Roman Luboradzki ◽  
Dmytro Volyniuk ◽  
Volodymyr Sashuk ◽  
...  
Keyword(s):  
Solid State ◽  
Fluorescence Properties ◽  
Aggregation Induced Emission ◽  
Donor Acceptor ◽  
Solid State Fluorescence ◽  
Active Donor

Two novel AIE-active donor–acceptor organoboron complexes with a carbazole donor unit are developed and their morphology-dependent solid-state fluorescence properties are established.

Fluorescence Properties of Donor Acceptor Chromophores on Newly Synthesized Pyridine-3-Carbonitriles

2009 ◽  
Vol 19 (6) ◽  
pp. 1119-1124 ◽  
Author(s):  
Raghunath B. Toche ◽  
Muddassar A. Kazi ◽  
Bhausaheb K. Ghotekar ◽  
Sandeep M. Bagul ◽  
Chanda D. Tantak ◽  
...  
Keyword(s):  
Fluorescence Properties ◽  
Donor Acceptor

Time dependent fluorescence properties of the excited state of donor-acceptor substituted biaryls in protic solvents

1996 ◽  
Author(s):  
F. Lahmani ◽  
E. Bréhéret ◽  
O. Benoist d’Azy ◽  
A. Zehnacker-Rentien ◽  
J. F. Delouis
Keyword(s):  
Excited State ◽  
Time Dependent ◽  
Fluorescence Properties ◽  
Protic Solvents ◽  
Donor Acceptor

scholarly journals A G2(MP2) theoretical study of substituent effects on H3BNHnCl3−n (n= 3-0) donor-acceptor complexes

2008 ◽  
Vol 6 (3) ◽  
pp. 400-403 ◽  
Author(s):  
Hafid Anane ◽  
Soufiane Houssame ◽  
Abdelali Guerraze ◽  
Abdeladim Guermoune ◽  
Abderrahim Boutalib ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Substituent Effects ◽  
Lone Pair ◽  
Proton Affinities ◽  
Lone Pair Orbital ◽  
Chlorine Substitution ◽  
Donor Acceptor ◽  
Nitrogen Lone Pair ◽  
The Stability ◽  
N Compounds

AbstractThe complexation energies of H3BNHnCl3−n (n= 3-0) complexes and the proton affinities of NHnCl3−n compounds have been computed at the G2(MP2) level of theory. G2(MP2) results show that the successive chlorine substitution on the ammonia decreases both the basicity of the NHnCl3−n ligands and the stability of H3BNHnCl3−n complexes. The findings are interpreted in terms of the rehybridisation of the nitrogen lone-pair orbital. The NBO partitioning scheme shows that the variation of the N-H and N-Cl bond lengths, upon complexation, is due to variation of “s” character in these bonds.

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