Synthesis and photochemical properties of cationic cyclopentadienyliron containing arylazo chromophores

Li, Guanglei; Ye, Hui; Chen, Yu; Zhao, Bin; Wang, Tao

doi:10.1016/j.inoche.2011.06.011

Cited by 8 publications

(4 citation statements)

References 24 publications

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“…Nucleophilic substitution (S N Ar) reaction is an important property of cationic cyclopentadienyl iron complexes of chloro-substituted arenes because of the good electron-withdrawing nature of the metallic moieties [22,23,25]. With this reaction, Fc-Cl and ClFc-Cl can effectively react with various nucleophilic reagents, such as phenols, aromatic primary amines, and carbazole derivatives.…”

Section: Synthesismentioning

confidence: 99%

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Synthesis and optical properties of cationic cyclopentadienyl iron complexes with diphenylacetylene chromophores

Shi

Zhao

et al. 2015

Inorganica Chimica Acta

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Section: Synthesismentioning

confidence: 99%

“…A novel Fc-arene with long conjugated structures was designed to further understand the photochemistry of Fc-arene and its derivatives ( Fig. 1) [22][23][24][25][26][27][28][29]. Fc-arene bearing a diphenylacetylene unit is believed to possess special properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and optical properties of cationic cyclopentadienyl iron complexes with diphenylacetylene chromophores

Shi

Zhao

et al. 2015

Inorganica Chimica Acta

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“…[59] By modifying the arene ligand, ferrocenium absorbing between 200 and 600 nm were developed for the CP of various epoxides from the UV to the visible range (200-600 nm range). [60][61][62][63][64][65] This intense research activity is sustained by the increasing demands of cationic photoinitiators, with the search of optimized photopolymerization systems. Notably, a wide range of photoinitiators are UV photoinitiators at short wavelength so that most of them do not match an important number of light sources, including mercury lamp.…”

Section: Introductionmentioning

confidence: 99%

Recent advances on iron-based photoinitiators of polymerization

Dumur

2020

European Polymer Journal

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With regards to the environmental and safety concerns raised nowadays by the polymer industry, polymerization processes requiring light as the activation source are currently knowing a revival of interest after decades of disinterest. Recent progresses in photopolymerization are notably sustained by the development of new polymerization application namely 3D and 4D printing enabling an unprecedented access to structures of incredible complexity. Parallel to the manufacturing process, the polymer material itself and its composition are also facing numerous questions concerning their environmental and human health impacts. Beyond the monomers, the different additives introduced in the resin can also be potentially toxic so that a great deal of efforts is currently done to develop new photoinitiators with a toxicity assessed as being insignificant. In this field, iron-based metal complexes are candidates of choice due to the clinical demonstration of their very low toxicities. Among iron complexes, ferrocene is among the most widely studied iron-based metallocene. Due to its unique and reversible electrochemical properties as well as their absorption centred in the visible range, numerous photoinitiators have been developed with ferrocene or its oxidized form i.e. ferrocenium. Parallel to this, the remarkable electrochemical properties of ferrocenium made it an excellent candidate for its incorporation in photoinitiating systems. However, interest for iron-based photoinitiators was not limited to ferrocene and ferrocenium, and Schiff base complexes were also successfully used as initiators of polymerization. In this review, an overview of the different iron-based photoinitiating systems reported to date is presented. More precisely, if iron-based photoinitiators are developed since 50 years, a special focus will be done on photoinitiators designed for recent polymerization conditions, namely, under visible light and low light intensity.

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“…We have recently synthesized cationic cyclopentadienyl iron complexes of arene containing the azobenzene group [31,32]. These complexes have shown very good photostability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and optical properties of a D–A–D cationic cyclopentadienyl iron complex containing double arylazo chromophores

Liu

Jia

Li³

et al. 2014

Res Chem Intermed

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A D-A-D cationic cyclopentadienyl iron complex containing double arylazo chromophores (Fc-diazo) with methoxyl group (Fc-diazo-OMe) was obtained via nucleophilic substitution and well characterized by IR, UV-visible, 1 H NMR, and 13 C NMR spectroscopy, and MS. UV-Vis absorption and nonlinear optical property of Fc-diazo-OMe were investigated by comparison of Fc-diazo with no methoxyl group (Fc-diazo-H). Quantum chemical calculations of the orbital energy, geometric structure of Fc-diazo-OMe, and Fc-diazo-H were conducted by using density functional methods at the B3PW91/Lanl2dz level. Charge transfer from the highest occupied molecular orbital to the lowest unoccupied molecular orbital was found based on density functional theory. The substitution of the methoxyl group greatly improves the NLO property of Fc-diazo. Fc-diazo-OMe shows effective two-photon absorption, coefficient and third-order nonlinear susceptibility for potential applications as optical materials, while Fc-diazo-H barely shows NLO ability.

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Synthesis and photochemical properties of cationic cyclopentadienyliron containing arylazo chromophores

Cited by 8 publications

References 24 publications

Synthesis and optical properties of cationic cyclopentadienyl iron complexes with diphenylacetylene chromophores

Synthesis and optical properties of cationic cyclopentadienyl iron complexes with diphenylacetylene chromophores

Recent advances on iron-based photoinitiators of polymerization

Synthesis and optical properties of a D–A–D cationic cyclopentadienyl iron complex containing double arylazo chromophores

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