The synthesis of bi- and trichromophoric dyes bearing an s-triazinyl ring spacer

Almonasy, Numan; Nepraš, Miloš; Hyková, Šárka; Lyčka, Antonı́n; Čermák, Jan; Dvořák, Miroslav; Michl, Martin

doi:10.1016/j.dyepig.2009.03.010

Cited by 9 publications

(3 citation statements)

References 4 publications

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“…Previously, we have described the synthesis and photo-physical properties of similar bichromophores. 3-Aminobenzanthrone or 3-aminoperylene as acceptor moieties and 2-aminoanthracene donor [7] as well as 3-aminobenzanthrone and 1-aminopyrene acceptor/ donor of the excitation energy [8] were used. For D-T-A bichromophore where D is 1-aminopyrene and A is 3-aminobenzanthrone, very efficient EET was found which takes place on the subpicosecond time scale, i.e.…”

Section: Introductionmentioning

confidence: 99%

Novel 1- and 9-aminoanthracene/3-aminobenzanthrone bichromophores exhibiting through-bond excitation energy transfer

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Novel 1- and 9-aminoanthracene/3-aminobenzanthrone bichromophores exhibiting through-bond excitation energy transfer

et al. 2015

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“…The 1 H chemical shifts were referenced to the solvent peak DMSO- d 6 (2.49 ppm) and the 13 C chemical shifts were referenced to the solvent peak DMSO d 6 (39.5 ppm). 2,4,6-Tri(1-pyrenylamino)-1,3,5-triazine Tz-Py was synthesized according to a procedure previously reported . The initiators are yellow powders for Tz_An , Tz_BP and Tz_Py .…”

Section: Experimental Partmentioning

confidence: 99%

“…2,4,6-Tri(1pyrenylamino)-1,3,5-triazine Tz-Py was synthesized according to a procedure previously reported. 5 The initiators are yellow powders for Tz_An, Tz_BP and Tz_Py. All the synthesized compounds were prepared with analytical purity up to accepted standards for new organic compounds (>98%) which was checked by high field NMR analysis.…”

Section: ■ Introductionmentioning

confidence: 99%

Trifunctional Photoinitiators Based on a Triazine Skeleton for Visible Light Source and UV LED Induced Polymerizations

et al. 2012

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Trifunctional photoinitiators (tPIs) based on benzophenone, anthracene, and pyrene chromophores linked to a triazine moiety are proposed as new initiating systems. In combination with an iodonium salt and a silane, these structures are able to initiate the radical polymerization RP of acrylates and the cationic polymerization CP of epoxides and vinylethers under Xe−Hg lamp, LED and very soft irradiation (i.e., halogen lamp). Upon addition of an amine, these new photoinitiators were also able to start the radical polymerization of acrylates. Excellent RP and CP polymerization profiles are obtained i.e. better than those recorded using the reference compounds (benzophenone, anthracence and pyrene). In CP, some of these compounds combined with thianthrenium salts can also be used. The mechanisms involved in the different multicomponent initiating systems were analyzed by ESR, fluorescence, steady state photolysis, and laser flash photolysis experiments.

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Fluorescence Anisotropy of Branched Molecules Containing 1-Aminopyrene Chromophores

et al. 2010

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Fluorescence anisotropy measurements were performed on a set of multichromophoric compounds, which contain a different number of aminopyrenyl moieties linked to a triazine ring, in order to reveal the nature of both the electronic excited states and relaxation pathways of the compounds. Our experimental results complement quantum chemical calculations. We propose that the lowest excited state from which fluorescence proceeds is localized on a single individual aminopyrene moiety. In contrast, excitation to a higher excited state is likely followed by a migration of energy to another nearby aminopyrene chromophore before the internal conversion to the emitting state takes place. We suggest that this migration is responsible for the experimentally measured decrease of fluorescence anisotropy of the studied compounds.

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The synthesis of bi- and trichromophoric dyes bearing an s-triazinyl ring spacer

Cited by 9 publications

References 4 publications

Novel 1- and 9-aminoanthracene/3-aminobenzanthrone bichromophores exhibiting through-bond excitation energy transfer

Novel 1- and 9-aminoanthracene/3-aminobenzanthrone bichromophores exhibiting through-bond excitation energy transfer

Trifunctional Photoinitiators Based on a Triazine Skeleton for Visible Light Source and UV LED Induced Polymerizations

Fluorescence Anisotropy of Branched Molecules Containing 1-Aminopyrene Chromophores

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