Synthesis and photophysical properties of conjugated (dodecyl)benzoateethynylene macromolecules: staining ofBacillus subtilisandEscherichia colirhizobacteria

2019 ◽  
Vol 43 (8) ◽  
pp. 3332-3340 ◽  
Author(s):  
Ma. Concepción García ◽  
Gleb Turlakov ◽  
Ivana Moggio ◽  
Eduardo Arias ◽  
J. Humberto Valenzuela ◽  
...  

The staining of agrobacteria was successfully demonstrated through a benzoateethynylene by fluorescence spectroscopy, laser confocal microscopy and microRaman.

2009 ◽  
Vol 42 (4) ◽  
pp. 121-128 ◽  
Author(s):  
Yasunori Tamagawa ◽  
Tomoyuki Saino ◽  
Makoto Matsuura ◽  
Yoh-ichi Satoh

2020 ◽  
Author(s):  
Neskarlys Rios ◽  
Franmerly Fuentes ◽  
Juan Manuel Garcia Garfido ◽  
Yomaira Otero

<div>A new phosphole derivative 2,5-di(2-quinolyl)-1-phenylphosphole (<b>1</b>) was synthesized by using the Fagan-Nugent method. Phosphole was obtained as an air stable solid in high yield (73%). Additionally, two new copper phosphole complexes [CuX(Phosphole)<sub>2</sub>] (X = Cl (<b>2a</b>), I (<b>2b</b>), Phosphole = <b>1</b>) have been synthesized by reaction of CuX (X = Cl, I) and phosphole derivative (<b>1</b>). All compound were characterized by NMR, ESI-MS, UV–Vis and fluorescence spectroscopy. The photophysical properties of all compounds were analyzed, UV-Vis spectra of the complexes <b>2a-b</b> shown π–π* transitions with shift very similar to the found in the free phosphole due to that their symmetrical structures inhibits efficient ILCT. We have found that the compounds <b>1</b>, <b>2a-b</b> exhibited fluorescence between 460 and 583 nm with quantum yields of Φ<sub>f</sub> = 0.04 – 0.11. The emission energy of <b>2b</b> is higher than <b>2a</b>, suggesting that λ<sub>max</sub> is affected by the ligand-field strength of the halogen ions in the complexes (I<sup>-</sup> < Cl<sup>-</sup> ).</div>


2020 ◽  
Author(s):  
Neskarlys Rios ◽  
Franmerly Fuentes ◽  
Juan Manuel Garcia Garfido ◽  
Yomaira Otero

<div>A new phosphole derivative 2,5-di(2-quinolyl)-1-phenylphosphole (<b>1</b>) was synthesized by using the Fagan-Nugent method. Phosphole was obtained as an air stable solid in high yield (73%). Additionally, two new copper phosphole complexes [CuX(Phosphole)<sub>2</sub>] (X = Cl (<b>2a</b>), I (<b>2b</b>), Phosphole = <b>1</b>) have been synthesized by reaction of CuX (X = Cl, I) and phosphole derivative (<b>1</b>). All compound were characterized by NMR, ESI-MS, UV–Vis and fluorescence spectroscopy. The photophysical properties of all compounds were analyzed, UV-Vis spectra of the complexes <b>2a-b</b> shown π–π* transitions with shift very similar to the found in the free phosphole due to that their symmetrical structures inhibits efficient ILCT. We have found that the compounds <b>1</b>, <b>2a-b</b> exhibited fluorescence between 460 and 583 nm with quantum yields of Φ<sub>f</sub> = 0.04 – 0.11. The emission energy of <b>2b</b> is higher than <b>2a</b>, suggesting that λ<sub>max</sub> is affected by the ligand-field strength of the halogen ions in the complexes (I<sup>-</sup> < Cl<sup>-</sup> ).</div>


2013 ◽  
Vol 50 (10) ◽  
pp. 101702
Author(s):  
涂龙 Tu Long ◽  
余锦 Yu Jin ◽  
樊仲维 Fan Zhongwei ◽  
邱基斯 Qiu Jisi ◽  
赵天卓 Zhao Tianzhuo ◽  
...  

2016 ◽  
Vol 24 (6) ◽  
pp. 1257-1263 ◽  
Author(s):  
赵维谦 ZHAO Wei-qian ◽  
任利利 REN Li-li ◽  
盛 忠 SHENG Zhong ◽  
王 允 WANG Yun ◽  
邱丽荣 QIU Li-rong

2020 ◽  
Vol 24 (05n07) ◽  
pp. 802-808
Author(s):  
Chiara M.A. Gangemi ◽  
Rosalba Randazzo ◽  
Massimiliano Gaeta ◽  
Cosimo G. Fortuna ◽  
Maria E. Fragalà ◽  
...  

We synthetized and characterized a mono spermine porphyrin derivative by NMR, UV-vis and fluorescence spectroscopy. The photophysical properties and the protonation equilibria of 5-(4-carboxyphenylspermine)-10,15,20-triphenylporphyrin have been investigated, showing that porphyrin does not aggregate in acidic solutions, differently from what occurs as soon as the core of the porphyrin is deprotonated. These aggregation processes have been detected by the rising of new fluorescence band and a significant splitting of the Soret band.


Ophthalmology ◽  
2006 ◽  
Vol 113 (12) ◽  
pp. 2203-2208 ◽  
Author(s):  
Akira Kobayashi ◽  
Hideaki Yokogawa ◽  
Kazuhisa Sugiyama

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