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Kumar R, Yadav R, Kolhe MA, Bhosale RS, Narayan R. 8-Hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS) based high fluorescent, pH stimuli waterborne polyurethane coatings. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Synthesis and Optical Performances of a Waterborne Polyurethane-Based Polymeric Dye. INT J POLYM SCI 2015. [DOI: 10.1155/2015/425083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A waterborne polyurethane-based polymeric dye (WPU-CFBB) was synthesized by anchoring 1, 4-bis(methylamino)anthraquinone (CFBB) to waterborne polyurethane chains. The number molecular weight, glass transition temperature, and average emulsion particle size for the polymeric dye were determined, respectively. This polymeric dye exhibited intriguing optical behaviors. The polymeric dye engendered two new absorption bands centered at about 520 nm and 760 nm if compared with CFBB in UV-vis spectra. The 760 nm peak showed hypsochromic shift with the decrease of average particle sizes. The polymeric dye dramatically demonstrated both hypsochromic and bathochromic effects with increasing temperature. The fluorescence intensity of the polymeric dye was much higher than that of CFBB. It was found that the fluorescence intensities would be enhanced from 20°C to 40°C and then decline from 40°C to 90°C. The fluorescence of the polymeric dye emulsion was very stable and was not sensitive to quenchers.
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BURUIANA EMILC, CHIBAC ANDREEAL, MELINTE VIOLETA, BURUIANA TINCA. Preparation of amphiphilic block copolymer containing triazene moieties and fluorescence study. J CHEM SCI 2013. [DOI: 10.1007/s12039-012-0350-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Buruiana EC, Hahui L, Buruiana T, Urech L, Lippert T. New polyacrylates with photosensitive triazene groups designed for laser ablation. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2007.10.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hermann A, Silva LS, Peixoto CRM, Oliveira ABD, Bordinhão J, Hörner M. Electrochemical properties of Cu4[PhN3C6H4N3(H)Ph]4(µ-O)2, a tetranuclear Copper(II) complex with 1-phenyltriazenido-2-phenyltriazene-benzene as ligand. ECLÉTICA QUÍMICA 2008. [DOI: 10.1590/s0100-46702008000300006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Bis-(µ2-oxo)-tetrakis{[1-feniltriazene-1,3-diil)-2-(phenyltriazenil)benzene copper(II) is a tetranuclear complex which shows four Cu(II) ions coordinated by four 1,2-bis(phenyltriazene)benzene bridged ligands, with one diazoaminic deprotonated chain, and two O2- ligands. The complex reduces at E1/2 = -0.95 V vs Fc+/Fc, a two electrons process. Cyclic voltammetric and spectroelectrochemical studies showed a reversible process. When immobilized on carbon paste electrode, the complex electrocatalyses the reduction of O2 dissolved on aqueous solution at -0.3 V vs SCE potential. The obtained current shows linearity with O2 concentration.
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Affiliation(s)
- A. Hermann
- Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Brazil
| | - L. S. Silva
- Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Brazil
| | - C. R. M. Peixoto
- Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Brazil
| | | | | | - M. Hörner
- Universidade Federal de Santa Maria, Brazil
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