Synthesis and fluorescence properties of unsymmetrical 1,4-Dihydropyrrolo[3,2-b]pyrrole dyes

2022 ◽  
Author(s):  
Yasuhiro Kubota ◽  
Kenta Koide ◽  
Yuka Mizino ◽  
Masato Nakazawa ◽  
Toshiyasu Inuzuka ◽  
...  

Unsymmetrical 1,4-dihydropyrrolo[3,2-b]pyrroles were synthesised and their absorption and fluorescence properties were investigated. The 5-p-diethylaminophenyl substituted derivative 5 (λab = 346 nm) showed red-shifted λab compared to the 6-p-diethylaminophenyl substituted derivative...

1967 ◽  
Vol 64 ◽  
pp. 173-182 ◽  
Author(s):  
Erhard J. Schimitschek ◽  
Richard B. Nehrich Jr ◽  
John A. Trias

2000 ◽  
Vol 72 (3) ◽  
pp. 415 ◽  
Author(s):  
Joydip Das ◽  
Rosalie K. Crouch ◽  
Parkson Lee-Gau Chong

Author(s):  
Keita Nobuhara ◽  
Yusuke Inagaki ◽  
Wataru Setaka

Intramolecular charge transfer (ICT) fluorescence has been widely investigated and exploited in sensor molecules. However, steric effects on the ICT fluorescence properties have rarely been reported so far, although research...


AIP Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 125008
Author(s):  
Siqi Li ◽  
Yunpeng Rao ◽  
Liangliang Pan ◽  
Yongjun Chen ◽  
Xiaoyu Zhai ◽  
...  

Author(s):  
Xue-Zhen Zhang ◽  
Xiao-Feng Wang ◽  
Wei-Hui Fang ◽  
Jian Zhang

Chemosensors ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 16
Author(s):  
Yingchun Wang ◽  
Tomas Opsomer ◽  
Wim Dehaen

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.


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