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Sharma VS, Sharma AS, Ganga VSR, Shrivastav PS, Shah PA, Agarwal N. Room-temperature blue-light-emitting liquid crystalline materials based on phenanthroimidazole-substituted carbazole derivatives. NEW J CHEM 2021. [DOI: 10.1039/d1nj04234c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report disc-shaped materials with the A–Π–D molecular architecture based on the phenanthroimidazole-linked carbazole group as blue-light-emitting materials with room-temperature liquid crystalline properties.
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Affiliation(s)
- Vinay S. Sharma
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India
| | - Anuj S. Sharma
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India
| | - Venkata Subba Rao Ganga
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
| | - Pranav S. Shrivastav
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India
| | - Priyanka A. Shah
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, India
| | - Nikhil Agarwal
- Department of Chemistry, Faculty of Basic and Applied Science, Madhav University, Sirohi, Rajasthan, India
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2
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De J, Devi M, Shah A, Gupta SP, Bala I, Singh DP, Douali R, Pal SK. Luminescent Conductive Columnar π-Gelators for Fe(II) Sensing and Bio-Imaging Applications. J Phys Chem B 2020; 124:10257-10265. [PMID: 33136408 DOI: 10.1021/acs.jpcb.0c07052] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The high demand and scarcity of luminescent, photoconductive, and transparent gels necessitate its finding as they are potential components in photonic devices such as solar cell concentrators where optical losses via scattering and reabsorption require to be minimized. In this direction, we have reported highly transparent, blue luminescent as well as photoconductive gels exhibiting the hole mobility of 10-3 cm2/V s at ambient temperature as investigated by the time-of-flight technique. The π-driven self-standing supergels were formed using triazole-modified phenylene-vinylene derivatives as gelators in a nonpolar solvent. Different microscopic studies revealed its entangled network of interwoven fibrilar self-assembly and anisotropic order in the gel state. Supramolecular assembly of xerogels, studied by small- and wide-angle X-ray scattering (SAXS/WAXS) suggesting their local columnar hexagonal (Colh) superstructure, is beneficial for conducting gels. Rheological measurements direct the stiffness and robustness of the organogels. In addition, the gelators were developed as a sensing platform for the ultrasensitive detection of Fe(II) ions at ppb level. 1H nuclear magnetic resonance (NMR) titrimetric studies revealed that the interaction of the H-atom of triazole units with Fe(II) is responsible for quenching of blue fluorescence. Also, one of the gelators was successfully applied in bio-imaging using the pollen grains of the Hibiscus rosa-sinensis plant.
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Affiliation(s)
- Joydip De
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
| | - Manisha Devi
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
| | - Asmita Shah
- Univ. Littoral Côte d'Opale, UR 4476, UDSMM, Unité de Dynamique et Structure des Matériaux Moléculaires, F-62228 Calais, France
| | | | - Indu Bala
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
| | - Dharmendra Pratap Singh
- Univ. Littoral Côte d'Opale, UR 4476, UDSMM, Unité de Dynamique et Structure des Matériaux Moléculaires, F-62228 Calais, France
| | - Redouane Douali
- Univ. Littoral Côte d'Opale, UR 4476, UDSMM, Unité de Dynamique et Structure des Matériaux Moléculaires, F-62228 Calais, France
| | - Santanu Kumar Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
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Mohan M, John R, Nagarajan SM, Trivedi DR. Design, Synthesis and Characterization of N‐Substituted Heteroaromatics: DFT‐Studies and Organic Light Emitting Device Application. ChemistrySelect 2020. [DOI: 10.1002/slct.201903409] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Makesh Mohan
- Optoelectronics Laboratory Department of Physics National Institute of Technology Karnataka (NITK) Surathkal Mangalore 575025
| | - Raganjali John
- Supramolecular Chemistry Laboratory Department of Chemistry National Institute of Technology Karnataka (NITK) Surathkal Mangalore 575025
| | - Satyanarayan M. Nagarajan
- Optoelectronics Laboratory Department of Physics National Institute of Technology Karnataka (NITK) Surathkal Mangalore 575025
| | - Darshak R. Trivedi
- Supramolecular Chemistry Laboratory Department of Chemistry National Institute of Technology Karnataka (NITK) Surathkal Mangalore 575025
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4
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Sharma VS, Sharma AS, Worthington SJB, Shah PA, Shrivastav PS. Columnar self-assembly, electrochemical and luminescence properties of basket-shaped liquid crystalline derivatives of Schiff-base-moulded p-tert-butyl-calix[4]arene. NEW J CHEM 2020. [DOI: 10.1039/d0nj04148c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of blue-light emitting supramolecular basket-shaped liquid crystalline compounds based on p-tert-butyl-calix[4]arene core to form self-assembly and columnar hexagonal phase.
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Affiliation(s)
- Vinay S. Sharma
- Department of Chemistry
- Faculty of Basic and Applied Science
- Madhav University
- Sirohi
- India
| | - Anuj S. Sharma
- Department of Chemistry
- School of Science
- Gujarat University
- Ahmedabad
- India
| | | | - Priyanka A. Shah
- Department of Chemistry
- School of Science
- Gujarat University
- Ahmedabad
- India
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Sharma VS, Sharma AS, Shah AP, Shah PA, Shrivastav PS, Athar M. New Class of Supramolecular Bowl-Shaped Columnar Mesogens Derived from Thiacalix[4]arene Exhibiting Gelation and Organic Light-Emitting Diodes Applications. ACS OMEGA 2019; 4:15862-15872. [PMID: 31592456 PMCID: PMC6776968 DOI: 10.1021/acsomega.9b01776] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
A new class of blue light-emitting bowl-shaped mesogens with the thiacalix[4]arene core appended with 1,3,4-thiadiazole derivatives having peripheral alkoxy side chains have been synthesized and well characterized. The liquid crystalline behavior of present synthesized derivatives was examined by optical polarizing microscopy, differential scanning calorimetry, and X-ray diffraction studies. It was observed that these thiacalix[4]arene derivatives were capable of stabilizing the observed Colh phase with a higher temperature range. The cone-shaped thiacalix[4]arene-based liquid crystals with peripheral alkoxy side chains able to pack into the columns with enriched intermolecular interactions and thermal behavior. All derivatives showed blue luminescence in solution, solid thin-film, and gelation state. The hexagonal columnar phase and emissive nature of thiadiazole-based thiacalixarene compounds having xerogel behavior make them favorable in the application of emissive electronic display devices. The electrochemical properties of these thiacalixarene-based compounds demonstrate the effect of alkyl side chain on the highest occupied molecular orbital-lowest unoccupied molecular orbital energy levels and also exhibited lower electron band gaps. The electroluminescence behavior of the compound 10c was examined as emissive layers in the fabrication of organic light-emitting diodes.
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Affiliation(s)
- Vinay S. Sharma
- Department
of Chemistry, Faculty of Basic and Applied Sciences, Madhav University, Abu
Road, Sirohi 307026, Rajasthan, India
| | - Anuj S. Sharma
- Department
of Chemistry, School of Science, Gujarat
University, Ahmedabad 380009, Gujarat, India
| | - Akshara P. Shah
- Department
of Chemistry, Mumbai University, Santacruz, Mumbai 400
098, India
| | - Priyanka A. Shah
- Department
of Chemistry, School of Science, Gujarat
University, Ahmedabad 380009, Gujarat, India
| | - Pranav S. Shrivastav
- Department
of Chemistry, School of Science, Gujarat
University, Ahmedabad 380009, Gujarat, India
| | - Mohd Athar
- Department
of Chemistry, Central University of Gujarat, Ghandhinagar 382030, India
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6
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Mohan M, Pangannaya S, Satyanarayan MN, Trivedi DR. Multicoloured Thiophene Based AIEgens: Single Crystal Structure Elucidation, Spectral Behaviour and DFT Studies. ChemistrySelect 2018. [DOI: 10.1002/slct.201800252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Makesh Mohan
- Optoelectronics Laboratory; Department of Physics; National Institute of Technology Karnataka (NITK) Surathkal; Mangalore - 575025
| | - Srikala Pangannaya
- Supramolecular Chemistry Laboratory; Department of Chemistry; National Institute of Technology Karnataka (NITK) Surathkal; Mangalore - 575025
| | - M. N. Satyanarayan
- Optoelectronics Laboratory; Department of Physics; National Institute of Technology Karnataka (NITK) Surathkal; Mangalore - 575025
| | - Darshak R. Trivedi
- Supramolecular Chemistry Laboratory; Department of Chemistry; National Institute of Technology Karnataka (NITK) Surathkal; Mangalore - 575025
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Pradhan B, Gupta RK, Pathak SK, De J, Pal SK, Achalkumar AS. Columnar self-assembly of luminescent bent-shaped hexacatenars with a central pyridine core connected with substituted 1,3,4-oxadiazole and thiadiazoles. NEW J CHEM 2018. [DOI: 10.1039/c7nj04449f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Multifunctional pyridine based bent shaped polycatenars stabilizing liquid crystalline and organogel self-assembly.
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Affiliation(s)
- Balaram Pradhan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | | | - Suraj Kumar Pathak
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Joydip De
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Manauli 140306
- India
| | - Santanu Kumar Pal
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Manauli 140306
- India
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Pathak SK, Nath S, De J, Pal SK, Achalkumar AS. The effect of regioisomerism on the mesomorphic and photophysical behavior of oxadiazole-based tris(N-salicylideneaniline)s: synthesis and characterization. NEW J CHEM 2017. [DOI: 10.1039/c7nj01766a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new regioisomeric star-shaped tris(N-salicylideneaniline)s are synthesized and characterized.
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Affiliation(s)
- Suraj Kumar Pathak
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Subrata Nath
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Joydip De
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Manauli 140306
- India
| | - Santanu Kumar Pal
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Manauli 140306
- India
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