coumarin dyes
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2021 ◽  
Vol 184 ◽  
pp. 108796
Author(s):  
Sancharika Dalal ◽  
Bratin Kumar Das ◽  
Meenaxi Saini ◽  
Debashree Chakraborty ◽  
Kalyan K. Sadhu

ChemCatChem ◽  
2020 ◽  
Author(s):  
Andrea Gualandi ◽  
Artur Nenov ◽  
Marianna Marchini ◽  
Giacomo Rodeghiero ◽  
Irene Conti ◽  
...  

2020 ◽  
Vol 5 (30) ◽  
pp. 9461-9476
Author(s):  
Tushar Debnath ◽  
Hirendra N. Ghosh
Keyword(s):  

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1975
Author(s):  
Florian Jakobs ◽  
Kristoffer Harms ◽  
Jana Kielhorn ◽  
Daniel Zaremba ◽  
Pen Yiao Ang ◽  
...  

For most kinds of active polymer optical fibers, a homogeneous distribution of dye molecules over the entire fiber length and cross section is required. In this study, chemical bonding of dyes to poly(methyl methacrylate) (PMMA) by copolymerization is achieved within the polymerization process instead of dissolving the dyes in the monomers. In combination with an improved fabrication mechanism, this leads to homogeneous dye distribution within the preforms. A method for proving the integration of the dyes into the polymer chains has been developed using high-performance liquid chromatography (HPLC) and size exclusion chromatography (SEC). Prestructured core-cladding preforms with dye-doped poly(cylohexyl methacrylate-co-methyl methacrylate)-core have been prepared with the Teflon string technique and were heat-drawn to few mode fibers.


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