led irradiation
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Author(s):  
Asaka Takahashi ◽  
Tsuyoshi Yamada ◽  
Taito Kobayashi ◽  
Kei Kumakura ◽  
Hiroki Matsuoka

Chemosphere ◽  
2022 ◽  
Vol 287 ◽  
pp. 132099 ◽  
Author(s):  
Santosh Kokate ◽  
Smita Gupta ◽  
Vijayakumar Gupta Kopuri ◽  
Halan Prakash

2021 ◽  
Vol 17 ◽  
pp. 2799-2811
Author(s):  
Inaiá O Rocha ◽  
Yuri G Kappenberg ◽  
Wilian C Rosa ◽  
Clarissa P Frizzo ◽  
Nilo Zanatta ◽  
...  

A new series of ten examples of Schiff bases, namely (E)-2-(((2-alkyl(aryl/heteroaryl)-4-(trifluoromethyl)quinolin-6-yl)imino)methyl)phenols 3, was easily synthesized with yields of up to 91% from the reactions involving a series of 2-(R-substituted) 6-amino-4-(trifluoromethyl)quinolines 1 and 4(5)-R1-substituted salicylaldehydes 2 – in which alkyl/aryl/heteroaryl for 2-R-substituents are Me, Ph, 4-MeC6H4, 4-FC6H4, 4-NO2C6H4, and 2-furyl, and R1-substituents are 5-NEt2, 5-OCH3, 4-Br, and 4-NO2. Complementarily, the Schiff bases showed low to good quantum fluorescence yield values in CHCl3 (Φf = 0.12–0.80), DMSO (Φf = 0.20–0.75) and MeOH (Φf = 0.13–0.85). Higher values of Stokes shifts (SS) were observed in more polar solvents (DMSO; 65–150 nm and MeOH; 65–130 nm) than in CHCl3 (59–85 nm). Compounds 3 presented good stability under white-LED irradiation conditions and moderate ROS generation properties were observed.


Antibiotics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1348
Author(s):  
Dan Wang ◽  
Takayuki Nambu ◽  
Hiroaki Tanimoto ◽  
Naohiro Iwata ◽  
Kazushi Yoshikawa ◽  
...  

Oral microbiome dysbiosis has important links to human health and disease. Although photodynamic therapy influences microbiome diversity, the specific effect of violet light irradiation remains largely unknown. In this study, we analyzed the effect of violet light-emitting diode (LED) irradiation on interdental plaque microbiota. Interdental plaque was collected from 12 human subjects, exposed to violet LED irradiation, and cultured in a specialized growth medium. Next-generation sequencing of the 16S ribosomal RNA genes revealed that α-diversity decreased, whereas β-diversity exhibited a continuous change with violet LED irradiation doses. In addition, we identified several operational taxonomic units that exhibited significant shifts during violet LED irradiation. Specifically, violet LED irradiation led to a significant reduction in the relative abundance of Fusobacterium species, but a significant increase in several species of oral bacteria, such as Veillonella and Campylobacter. Our study provides an overview of oral plaque microbiota changes under violet LED irradiation, and highlights the potential of this method for adjusting the balance of the oral microbiome without inducing antibiotic resistance.


2021 ◽  
pp. 100337
Author(s):  
Abdolmotaleb Seidmohammadi ◽  
Ghorban Asgari ◽  
Raheleh Amiri ◽  
Ghasem Azarian

Author(s):  
Pedro J.L. Crugeira ◽  
Paulo F. de Almeida ◽  
Igor C.F. Sampaio ◽  
Luiz G.P. Soares ◽  
David A. Moraga Amador ◽  
...  

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