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Room-Temperature, Deep-Red/NIR-Emissive, C 3-Symmetric (n,π-conjugated) Columnar Liquid Crystals: C 3h -Tris(keto-hydrazone)s.
Nayak, Rashmi Ashwathama; Veerabhadraswamy, Bhyranalyar Nagarajappa; Shankar Rao, Doddamane S; Sudhakar, Achalkumar Ammathnadu; Yelamaggad, Channabasaveshwar V.
Afiliación
  • Nayak RA; Centre for Nano and Soft Matter Sciences, P.B. No. 1329, Jalahalli, Bangalore 560013, India.
  • Veerabhadraswamy BN; Centre for Nano and Soft Matter Sciences, P.B. No. 1329, Jalahalli, Bangalore 560013, India.
  • Shankar Rao DS; Centre for Nano and Soft Matter Sciences, P.B. No. 1329, Jalahalli, Bangalore 560013, India.
  • Sudhakar AA; Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
  • Yelamaggad CV; Centre for Nano and Soft Matter Sciences, P.B. No. 1329, Jalahalli, Bangalore 560013, India.
ACS Omega ; 6(4): 3291-3306, 2021 Feb 02.
Article en En | MEDLINE | ID: mdl-33553947
The first examples of deep-red/near-infrared (NIR) photoluminescent, (n,π-conjugated) discotics, namely, C 3h -tris(keto-hydrazone)s, which are the tautomers of tris(azo-enol)s, have been synthesized via a facile one-step triple azo-coupling and characterized. The n,π-resonance-assisted intramolecular H-bonding, rendering planarity and shape persistence to the central core, facilitates their self-assembly into either a hexagonal columnar (Colh) phase (p6mm lattice) or a columnar rectangular (Colr) phase (p2mm lattice), over an extended thermal range including room temperature, fluorescing in the deep-red/NIR-I region. The low band gap with deep-red/NIR emission makes them ideal candidates for NIR-organic light-emitting diodes (OLEDs) and bioimaging.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Omega Año: 2021 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Omega Año: 2021 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos