Nonlinear optical polymers. 1. Novel network polyurethane with azobenzene dye in the main frame

Tsutsumi, Naoto; Yoshizaki, Shuji; Sakai, Wataru; Kiyotsukuri, Tsuyoshi

doi:10.1021/ma00123a008

Cited by 70 publications

(57 citation statements)

References 5 publications

(5 reference statements)

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“…Furthermore, it was of interest to compare the biocompatibility and degradation of PUR scaffolds synthesized from aliphatic and lysinederived triisocyanates. While LTI and HDIt have been used to synthesize cast elastomers with improved properties, such as optical clarity and thermal stability (42), their use in biodegradable PUR scaffolds has not been previously reported. The effects of triisocyanate composition on biocompatibility, biodegradation, and mechanical properties were investigated, as well as the potential of the PUR scaffolds for release of growth factors.…”

Section: Discussionmentioning

confidence: 99%

Injectable Biodegradable Polyurethane Scaffolds with Release of Platelet-derived Growth Factor for Tissue Repair and Regeneration

et al. 2008

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Purpose-The purpose of this work was to investigate the effects of triisocyanate composition on the biological and mechanical properties of biodegradable, injectable polyurethane scaffolds for bone and soft tissue engineering.Methods-Scaffolds were synthesized using reactive liquid molding techniques, and were characterized in vivo in a rat subcutaneous model. Porosity, dynamic mechanical properties, degradation rate, and release of growth factors were also measured.Results-Polyurethane scaffolds were elastomers with tunable damping properties and degradation rates, and they supported cellular infiltration and generation of new tissue. The scaffolds showed a two-stage release profile of platelet-derived growth factor, characterized by a 75% burst release within the first 24 h and slower release thereafter.Conclusions-Biodegradable polyurethanes synthesized from triisocyanates exhibited tunable and superior mechanical properties compared to materials synthesized from lysine diisocyanates. Due to their injectability, biocompatibility, tunable degradation, and potential for release of growth factors, these materials are potentially promising therapies for tissue engineering.

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Section: Discussionmentioning

confidence: 99%

Injectable Biodegradable Polyurethane Scaffolds with Release of Platelet-derived Growth Factor for Tissue Repair and Regeneration

et al. 2008

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“…In theory, the chromophore in polymer P2 has a larger inter-sertial volume, and polymer P2 should have worse long-term stability [43,55]. However, Fig.…”

Section: Long-term Stability Of the Crosslinking Systemmentioning

confidence: 96%

Novel poly(aryl ether ketone) with electro-optic chromophore side chains for light modulators

Zhou

Liu

Wang

et al. 2017

J Mater Sci: Mater Electron

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“…Tab. 6 shows the s and b values for the benzoguanamine-based NLO polymers at various temperatures (25,50,75, and 100 8C).…”

Section: Kww Equation Fittingmentioning

confidence: 99%

Preparation and characterization of all organic NLO sol-gel materials based on amino azobenzene dyes

Hsiue¹,

Kuo

Lin

et al. 2000

Macromol. Chem. Phys.

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A series of NLO active chromophores based on amino azobenzene dyes have been synthesized by diazotization reaction. All organic NLO‐active materials were obtained by introducing the chromophores into (hydroxymethyl)‐benzoguanamine (HMBG) systems by a sol‐gel process. All the sol‐gel materials exhibit excellent optical transparency. Morphology, thermal and optical properties of these polymers have been characterized. These NLO‐active polymers can be classified into reactive systems and guest‐host systems. In the reactive systems, the chromophores were condensed with HMBG in the sol‐gel process. In the guest‐host systems, the nonreactive chromophores were simply doped into HMBG matrix. A second harmonic coefficient, d33, of 23.2 pm/V has been obtained. Moreover, a systematic investigation of variation of chromophoric chemical structures on NLO properties has been investigated. Covalent bonding effect between chromophore and benzoguanamine as well as steric effect are shown to greatly enhance the temporal stability for these NLO‐active sol‐gel systems.

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Nonlinear optical polymers. 1. Novel network polyurethane with azobenzene dye in the main frame

Cited by 70 publications

References 5 publications

Injectable Biodegradable Polyurethane Scaffolds with Release of Platelet-derived Growth Factor for Tissue Repair and Regeneration

Injectable Biodegradable Polyurethane Scaffolds with Release of Platelet-derived Growth Factor for Tissue Repair and Regeneration

Novel poly(aryl ether ketone) with electro-optic chromophore side chains for light modulators

Preparation and characterization of all organic NLO sol-gel materials based on amino azobenzene dyes

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