Self-polymerization of Eu(TTA)3AA in rubber and their fluorescence effect

Lu, Yao; Wen, Shipeng; Duan, Xue; Hu, Xiaodan; Che, Mingsheng; Jing, Wenfeng; Liu, Hui; Liu, Li

doi:10.1016/s1002-0721(12)60416-5

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…Three peaks related to the characteristic ring stretching vibration of Phen were located at 734, 852 and 1561 cm −1 , which after coordination shifted to 713, 843 and 1542 cm −1 in Yb(TTA) 2 AAPhen and 716, 843 and 1537 cm −1 in Nd(TTA) 2 AAPhen, respectively [ 11 , 48 ]. The typical –C=C– (1618 cm −1 ) and –C=O– (1638 cm −1 ) stretching vibrations of AA varied to 1605 and 1633 cm −1 in Yb(TTA) 2 AAPhen as well as 1602 and 1625 cm −1 in Nd(TTA) 2 AAPhen [ 49 ]. The peaks at 1642 and 1663 cm −1 , which were assigned to the –C=O– stretching vibration of HTTA, also contributed to the typical peaks in Nd(TTA) 2 AAPhen and Yb(TTA) 2 AAPhen [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

“…The theoretical values of weight percentage of each component in Yb(TTA) 2 AAPhen and Nd(TTA) 2 AAPhen were calculated to be Yb: 19.5%, TTA: 50.1%, Phen: 22.3%, AA: 8.1% as well as Nd: 16.8%, TTA: 51.7%, Phen: 23.1%, AA: 8.4%. A slight weight loss initiating from 191 and 185 °C for Yb(TTA) 2 AAPhen and Nd(TTA) 2 AAPhen, respectively, was noticed, as shown in the insert figure, which was related to the decomposition of ligand AA in both samples [ 49 ]. Beginning from 270 and 247 °C, the second degradation attributing to the decomposition of ligand TTA took place, while the third degradation stepping from 464 and 441 °C resulted from the decomposition of ligand Phen.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and Study of Shape-Memory Polymers Selectively Induced by Near-Infrared Lights via In Situ Copolymerization

Fang

Chen

et al. 2017

Polymers

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Shape-memory polymers (SMPs) selectively induced by near-infrared lights of 980 or 808 nm were synthesized via free radical copolymerization. Methyl methacrylate (MMA) monomer, ethylene glycol dimethylacrylate (EGDMA) as a cross-linker, and organic complexes of Yb(TTA) 2 AAPhen or Nd(TTA) 2 AAPhen containing a reactive ligand of acrylic acid (AA) were copolymerized in situ. The dispersion of the organic complexes in the copolymer matrix was highly improved, while the transparency of the copolymers was negligibly influenced in comparison with the pristine cross-linked PMMA. In addition, the thermal resistance of the copolymers was enhanced with the complex loading, while their glass transition temperature, cross-linking level, and mechanical properties were to some extent reduced. Yb(TTA) 2 AAPhen and Nd(TTA) 2 AAPhen provided the prepared copolymers with selective photothermal effects and shape-memory functions for 980 and 808 nm NIR lights, respectively. Finally, smart optical devices which exhibited localized transparency or diffraction evolution procedures were demonstrated based on the prepared copolymers, owing to the combination of good transparency and selective light wavelength responsivity.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Synthesis and Study of Shape-Memory Polymers Selectively Induced by Near-Infrared Lights via In Situ Copolymerization

Fang

Chen

et al. 2017

Polymers

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“…The excitation spectrum of Eu(TTA) 3 (see Fig. 7(a)) obtained by monitoring the emission of Eu(III) ion at 612 nm shows a broad absorption peak from 240 nm to 500 nm with a maximum at 325 nm, which is caused by π-π* transition of the TTA ligand [32]. Upon excitation at a wavelength of 365 nm, the emission spectrum of the complex exhibits characteristic emissions at 579, 590, 612, and 649 nm attributed to the 5 D 0 -7 F 0 , 5 D 0 -7 F 1 , 5 D 0 -7 F 2 , and 5 D 0 -7 F 3 transitions, respectively.…”

Section: Photoluminescence Propertiesmentioning

confidence: 99%

Tunable white light emission of a large area film-forming macromolecular complex with a high color rendering index

Zhang

Wang

Qian

et al. 2018

Opt. Mater. Express

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The technological route of pre-polymerization and post-coordination was employed to obtain a rapid film-forming macromolecular complex emitting white light by simultaneously combining poly (styrene-co-glycidyl methacrylate) with three primary color complexes [r(R)/g(G)/b(B)]. The white light emission of the macromolecular complex was realized by tuning the ratios of the trichromatic complexes or altering excitation wavelengths. Upon excitation at 365 nm, macromolecular complex 5 with R:G:B = 1:10:1 exhibits three discrete characteristic peaks at 458 (blue emission), 543 (green emission), and 612 (red emission) nm. The corresponding CIE coordinates of (0.332, 0.337) are in close proximity to pure white light (0.330, 0.330). Macromolecular complex 3 (R:G:B = 1:8:0.5) achieves white emission being excited at the wavelength of 375 nm. Macromolecular complex 5 was melted at 140 °C, dropped on a 365 nm UV chip, and then cooled to room temperature to fabricate an LED device with CIE coordinates of (0.35, 0.34), CCT of 5306 K, and CRI of 95.2. The prepared macromolecular complex film further shows vivid color reproduction for real objects, confirming the high rendering index of the macromolecular complex. In addition, the macromolecular complex remains stable up to 272.6 °C, meeting the requirements of operating temperature for LEDs. This work establishes a rapid film-forming macromolecular complex with potential application in NUV-WLEDs.

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“…Today, luminescent silicone materials show high potential in practical applications and are used in chemical sensors [11], photonics [12], optics [13], biomedicine [14] and optoelectronics [15]. However, despite the potentially broad field of applications, reports of design of luminescent polysiloxanes are still scarce and not systematic, and the number of such polymers represented is still small [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…This approach is the simplest; however, luminescent compounds can be easily extracted from the obtained materials upon contact with organic solvents. In the second approach, luminescent metal complexes are involved in copolymerization reactions with various comonomers [20][21][22]. The approach is perspective; however, some difficulties can appear in high molecular weight copolymers synthesis leading to their low film-forming ability and flexibility.…”

Section: Introductionmentioning

confidence: 99%

Re(I) Complexes as Backbone Substituents and Cross-Linking Agents for Hybrid Luminescent Polysiloxanes and Silicone Rubbers

et al. 2021

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This study focuses on the synthesis of hybrid luminescent polysiloxanes and silicone rubbers grafted by organometallic rhenium(I) complexes using Cu(I)-catalyzed azido-alkyne cycloaddition (CuAAC). The design of the rhenium(I) complexes includes using a diimine ligand to create an MLCT luminescent center and the introduction of a triple C≡C bond on the periphery of the ligand environment to provide click-reaction capability. Poly(3-azidopropylmethylsiloxane-co-dimethylsiloxane) (N3-PDMS) was synthesized for incorporation of azide function in polysiloxane chain. [Re(CO)3(MeCN)(5-(4-ethynylphenyl)-2,2′-bipyridine)]OTf (Re1) luminescent complex was used to prepare a luminescent copolymer with N3-PDMS (Re1-PDMS), while [Re(CO)3Cl(5,5′-diethynyl-2,2′-bipyridine)] (Re2) was used as a luminescent cross-linking agent of N3-PDMS to obtain luminescent silicone rubber (Re2-PDMS). The examination of photophysical properties of the hybrid polymer materials obtained show that emission profile of Re(I) moiety remains unchanged and metallocenter allows to control the creation of polysiloxane-based materials with specified properties.

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Self-polymerization of Eu(TTA)3AA in rubber and their fluorescence effect

Cited by 8 publications

References 21 publications

Synthesis and Study of Shape-Memory Polymers Selectively Induced by Near-Infrared Lights via In Situ Copolymerization

Synthesis and Study of Shape-Memory Polymers Selectively Induced by Near-Infrared Lights via In Situ Copolymerization

Tunable white light emission of a large area film-forming macromolecular complex with a high color rendering index

Re(I) Complexes as Backbone Substituents and Cross-Linking Agents for Hybrid Luminescent Polysiloxanes and Silicone Rubbers

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