Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups
We report the synthesis, characterization, and the thermotropic and photoluminescence properties of dialkoxyterphenyls with (T12-CN and T12-2CN) and without (T12) nitrile groups. These terphenyls were prepared through the Suzuki-Miyaura cross-coupling reaction using a palladium-based catalyst. The p...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/8275489 |
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| author | M. L. Mota González A. Carrillo Castillo R. C. Ambrosio Lázaro J. Flores Méndez Mario Moreno Priscy A. Luque Dámaso Navarro |
| author_facet | M. L. Mota González A. Carrillo Castillo R. C. Ambrosio Lázaro J. Flores Méndez Mario Moreno Priscy A. Luque Dámaso Navarro |
| author_sort | M. L. Mota González |
| collection | DOAJ |
| description | We report the synthesis, characterization, and the thermotropic and photoluminescence properties of dialkoxyterphenyls with (T12-CN and T12-2CN) and without (T12) nitrile groups. These terphenyls were prepared through the Suzuki-Miyaura cross-coupling reaction using a palladium-based catalyst. The products obtained were analyzed as powders or after being drop-casted or spin-coated on glass. Nuclear Magnetic Resonance (1H NMR) and Fourier Transform Infrared (FTIR) spectroscopy techniques confirmed the structure and purity of the synthesized terphenyls. The mesomorphic behavior was studied by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction (XRD). T12 developed various mesophases, whereas T12-CN and T12-2CN displayed one single mesophase of low order over a wide temperature range. The films topology was studied by AFM and the optical properties were determined by ultraviolet-visible (UV-Vis) spectroscopy and spectrofluorometry. Higher roughness was found for the films prepared with the asymmetric terphenyl (T12-CN). The photoluminescence (PL) spectrum obtained for the asymmetric terphenyl (T12-CN) exhibited the expected characteristics with an emission band centered at 381 nm and an overtone around 760 nm. |
| format | Article |
| id | doaj-art-f36d04ec98e1466ca2db5d8b116fa2bf |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-f36d04ec98e1466ca2db5d8b116fa2bf2025-02-03T01:04:56ZengWileyJournal of Chemistry2090-90632090-90712017-01-01201710.1155/2017/82754898275489Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile GroupsM. L. Mota González0A. Carrillo Castillo1R. C. Ambrosio Lázaro2J. Flores Méndez3Mario Moreno4Priscy A. Luque5Dámaso Navarro6CONACYT, Universidad Autónoma de Ciudad Juárez, 32310 Ciudad Juárez, CHIH, MexicoInstituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez, Ave. del Charro 610, 32310 Ciudad Juárez, CHIH, MexicoFaculty of Electronics, Benemérita Universidad Autónoma de Puebla, 72000 Puebla, PUE, MexicoFaculty of Electronics, Benemérita Universidad Autónoma de Puebla, 72000 Puebla, PUE, MexicoElectronics Department, National Institute of Astrophysics, Optics and Electronics, 72840 Santa Maria Tonantzintla, PUE, MexicoFIAD, Universidad Autónoma de Baja California, 22860 Ensenada, BC, MexicoCentro de Investigación en Química Aplicada, Blvd. Enrique Reyna H., No. 140, 25294 Saltillo, COAH, MexicoWe report the synthesis, characterization, and the thermotropic and photoluminescence properties of dialkoxyterphenyls with (T12-CN and T12-2CN) and without (T12) nitrile groups. These terphenyls were prepared through the Suzuki-Miyaura cross-coupling reaction using a palladium-based catalyst. The products obtained were analyzed as powders or after being drop-casted or spin-coated on glass. Nuclear Magnetic Resonance (1H NMR) and Fourier Transform Infrared (FTIR) spectroscopy techniques confirmed the structure and purity of the synthesized terphenyls. The mesomorphic behavior was studied by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction (XRD). T12 developed various mesophases, whereas T12-CN and T12-2CN displayed one single mesophase of low order over a wide temperature range. The films topology was studied by AFM and the optical properties were determined by ultraviolet-visible (UV-Vis) spectroscopy and spectrofluorometry. Higher roughness was found for the films prepared with the asymmetric terphenyl (T12-CN). The photoluminescence (PL) spectrum obtained for the asymmetric terphenyl (T12-CN) exhibited the expected characteristics with an emission band centered at 381 nm and an overtone around 760 nm.http://dx.doi.org/10.1155/2017/8275489 |
| spellingShingle | M. L. Mota González A. Carrillo Castillo R. C. Ambrosio Lázaro J. Flores Méndez Mario Moreno Priscy A. Luque Dámaso Navarro Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups Journal of Chemistry |
| title | Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups |
| title_full | Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups |
| title_fullStr | Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups |
| title_full_unstemmed | Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups |
| title_short | Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups |
| title_sort | synthesis and study of chemical thermal mesomorphic and optical properties of terphenyls modified with nitrile groups |
| url | http://dx.doi.org/10.1155/2017/8275489 |
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