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Sobarzo PA, González AF, Schott E, Tagle LH, Tundidor-Camba A, González-Henríquez C, Jessop IA, Terraza CA. New Triphenylamine-Based Oligomeric Schiff Bases Containing Tetraphenylsilane Moieties in the Backbone. Polymers (Basel) 2019; 11:E216. [PMID: 30960202 PMCID: PMC6419043 DOI: 10.3390/polym11020216] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 01/18/2019] [Accepted: 01/24/2019] [Indexed: 11/17/2022] Open
Abstract
Three new triphenylamine-based oligomeric Schiff bases (polySB1, polySB2 and polySB3) containing tetraphenylsilane core (TPS-core) in the main chain were obtained from TPS-core-based diamines and bis(4-formylphenyl)phenylamine by a high-temperature polycondensation reaction. These new oligomers were structurally characterized by FT-IR, NMR and elemental analysis. All polySBs were highly soluble in common organic solvents, such as chloroform, tetrahydrofuran and chlorobenzene. Samples showed moderate molecular average molecular weight (Mw) and a high thermal stability above 410 °C. Likewise, polySBs showed absorption near 400 nm in the UV-vis range and photoluminescence. The HOMO levels and band-gap values were found in the ranges of -6.06 to -6.18 eV and 2.65⁻2.72 eV, respectively. The lowest band-gap value was observed for polySB2, which could be attributed to a more effective π-conjugation across the main chain. The results suggest that silicon-containing polySBs are promising wide-band-gap semiconductors materials for optoelectronic applications.
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Affiliation(s)
- Patricio A Sobarzo
- Research Laboratory for Organic Polymers, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile.
| | - Alexis F González
- Research Laboratory for Organic Polymers, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile.
| | - Eduardo Schott
- Department of Inorganic Chemistry, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile.
| | - Luis H Tagle
- Research Laboratory for Organic Polymers, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile.
| | - Alain Tundidor-Camba
- Research Laboratory for Organic Polymers, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile.
- UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Carmen González-Henríquez
- Laboratory of Nanotechnology and Advanced Materials, Universidad Tecnológica Metropolitana, P.O. Box 9845, Post 21, Santiago, Chile.
| | - Ignacio A Jessop
- Laboratorio de Materiales Orgánicos y Poliméricos, Department of Chemistry, Faculty of Chemistry, Universidad de Tarapacá, P.O. Box 7-D, Arica, Chile.
| | - Claudio A Terraza
- Research Laboratory for Organic Polymers, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile.
- UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Monzel WJ, Lu GQ, Pruyn TL, Houser CL, Yee GT. Thermal and oxidative behavior of a tetraphenylsilane-containing phthalonitrile polymer. HIGH PERFORM POLYM 2018. [DOI: 10.1177/0954008318811481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Phthalonitrile polymers have potential for high-temperature applications in polymer matrix composites as electronic encapsulation compounds. To investigate the effect of inclusion of an organosilicon moiety, a tetraphenylsilane-containing phthalonitrile monomer was synthesized in high yields. The monomer possessed a high melting point of 222–223°C, while no hydrolytic sensitivity was observed. Cured polymers exhibited glass transitions in the range of 290–325°C and coefficients of thermal expansion of 73–77 µm/(m °C). In thermogravimetric analysis (TGA), 5 wt% loss was observed at 482–497°C and 519–526°C, under air and nitrogen, respectively. Infrared (IR)-TGA of evolved gases revealed multiple degradations in both nitrogen and air. The material possessed good thermo-oxidative stability (TOS) when aged in air at 250°C. After aging for 5000 h, oxidative degradation was characterized using Fourier transform IR microscopy, energy dispersive spectroscopy, optical microscopy, and Knoop hardness testing. Four zones were identified in aged samples. The cleavage of Si-phenyl bonds and the formation of Si–O phases and carbonyl groups were observed.
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Affiliation(s)
- William J Monzel
- Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Guo-Quan Lu
- Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA, USA
| | | | | | - Gordon T Yee
- Department of Chemistry, Virginia Tech, Blacksburg, VA, USA
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3
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Jessop IA, Tagle LH, Coll D, Ortiz P, Pérez G, Terraza CA, Tundidor-Camba A. Oligomeric poly(ether-imide)s bearing ortho
trifluoromethyl groups: Solubility, thermal studies, and optical properties. J Appl Polym Sci 2018. [DOI: 10.1002/app.46613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ignacio A. Jessop
- Laboratorio de Materiales Orgánicos y Poliméricos, Departamento de Química, Facultad de Ciencias; Universidad de Tarapacá, Av. General Velásquez 1775, Box 7-D; Arica Chile
| | - Luis Hernán Tagle
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry; Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22; Santiago Chile
| | - Deysma Coll
- Núcleo de Química y Bioquímica, Facultad de Ciencias; Universidad Mayor; Santiago Chile
| | - Pablo Ortiz
- Núcleo de Química y Bioquímica, Facultad de Ciencias; Universidad Mayor; Santiago Chile
| | - Germán Pérez
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry; Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22; Santiago Chile
| | - Claudio A. Terraza
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry; Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22; Santiago Chile
| | - Alain Tundidor-Camba
- Research Laboratory for Organic Polymers (RLOP), Department of Organic Chemistry; Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22; Santiago Chile
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Tundidor-Camba A, Tagle LH, González-Henríquez CM, Coll D, Hauyón R, Sobarzo PA, Jessop IA, Terraza CA. New oligomeric poly(ether-imide)s containing diphenylsilane and dibenzofuran moieties. Synthesis and characterization. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2018. [DOI: 10.1080/10601325.2018.1426387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- A. Tundidor-Camba
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - L. H. Tagle
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C. M. González-Henríquez
- Laboratory of Nanotechnology and Advanced Materials (LNAM), Facultad de Ciencias Naturales, Matemáticas y del Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago, Chile
| | - D. Coll
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - R. Hauyón
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - P. A. Sobarzo
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - I. A. Jessop
- Chemistry Department, Universidad de Tarapacá, Arica, Chile
| | - C. A. Terraza
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile
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Deng B, Zhang S, Liu C, Li W, Zhang X, Wei H, Gong C. Synthesis and properties of soluble aromatic polyimides from novel 4,5-diazafluorene-containing dianhydride. RSC Adv 2018. [DOI: 10.1039/c7ra12101f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A dianhydride monomer containing 4,5-diazofluorene was synthesized, and the corresponding organo-soluble polyimides exhibited good comprehensive properties.
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Affiliation(s)
- Bo Deng
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shujiang Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Chang Liu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Wei Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiangdong Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Hua Wei
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Chenliang Gong
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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Tundidor-Camba A, González-Henríquez CM, Sarabia-Vallejos MA, Tagle LH, Hauyón RA, Sobarzo PA, González A, Ortiz PA, Maya EM, Terraza CA. Silylated oligomeric poly(ether-azomethine)s from monomers containing biphenyl moieties: synthesis and characterization. RSC Adv 2018; 8:1296-1312. [PMID: 35540926 PMCID: PMC9077007 DOI: 10.1039/c7ra10929f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 12/14/2017] [Indexed: 02/03/2023] Open
Abstract
In this study, four new silicon-containing poly(ether-azomethine)s with linear structures were prepared using original silicon and biphenyl moiety-containing monomers: two diamines and two dialdehydes. The oligomeric natures of the samples were established by GPC analysis, which showed chains containing 3 to 5 repetitive units. The monomers and the oligomeric samples were structurally characterized by NMR and FT-IR spectroscopy. The solubilities of the samples in common organic solvents and their thermal behavior enable improvement of their industrial and technological processability. The optical band gaps of the oligomeric samples were estimated from optical measurements (UV-vis), and their electrical behavior in films was determined using the four-point method. The surface arrangements and morphological characteristics of the films were determined via atomic force microscopy measurements. The roughness, area increase percentage and layer stiffness of the films were also measured using this technique. In this study, four new silicon-containing poly(ether-azomethine)s with linear structures were prepared using original silicon and biphenyl moiety-containing monomers: two diamines and two dialdehydes.![]()
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