Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups | Zendy

María de la Luz Mota González | Zendy; A. CarrilloCastillo | Zendy; Roberto Ambrosio | Zendy; Javier Flores Méndez | Zendy; Mario Moreno | Zendy; P.A. Luque | Zendy; Dámaso Navarro | Zendy

Open Access

Synthesis and Study of Chemical, Thermal, Mesomorphic, and Optical Properties of Terphenyls Modified with Nitrile Groups

Author(s) -

María de la Luz Mota González,

A. CarrilloCastillo,

Roberto Ambrosio,

Javier Flores Méndez,

Mario Moreno,

P.A. Luque,

Dámaso Navarro

Publication year - 2017

Publication title -

journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.436

H-Index - 50

eISSN - 2090-9063

pISSN - 2090-9071

DOI - 10.1155/2017/8275489

Subject(s) - chemistry , mesophase , photoluminescence , differential scanning calorimetry , nitrile , fourier transform infrared spectroscopy , spectroscopy , crystallography , organic chemistry , materials science , chemical engineering , optoelectronics , physics , quantum mechanics , engineering , thermodynamics , phase (matter)

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

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research