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Desai V, Sharma VS, Rathod SL, Sharma AS, Mali HA, Shah RR, Shrivastav PS. Thiacalixarene Appended Azo-based Supramolecular Systems: Self-assembly and Photo Tuning Reversible Liquid Crystalline Properties. Chemphyschem 2023; 24:e202200803. [PMID: 36642695 DOI: 10.1002/cphc.202200803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/10/2023] [Accepted: 01/10/2023] [Indexed: 01/17/2023]
Abstract
Four new azo-based supramolecular materials containing thiacalixarene core substituted by variable alkoxy groups (TFA1 -TFA4 ) have been designed and synthesized for the mesomorphic and photoswitching properties. The liquid crystalline behavior were accomplished by using DSC, POM, and XRD studies. All azo-based thiacalixarene based materials with short and higher chain length display columnar hexagonal mesophase with broad temperature range. The thermal behavior of all the materials was investigated by DSC and TGA study. The structural and conformational study of the lower rim functionalized materials was confirmed by using different techniques. These thiacalixarene moulded liquid crystalline compounds shows columnar self-assembly type behavior and higher thermal stability. The introduction of bi-substituted azo-ester network towards the lower rim of thiacalixarene core has impact on the electron delocalization and liquid crystalline properties. The photoswitching properties suggested cis and trans azo-isomerization under radiation of UV light and higher thermal back relaxation time. The mesogenic behaviour of compound TFA2 and TFA4 were demolished by the influence of cis and trans isomerization. The structure-property correlation is studied to understand the variation in mesogenic properties with the substitution of variable alkoxy side chain.
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Affiliation(s)
- Vipul Desai
- Department of Chemistry, K.K.Shah Jarodwala Maninagar Science College, Gujarat University, Ahmedabad, Gujarat, 380008, India
| | - Vinay S Sharma
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Suryajit L Rathod
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Anuj S Sharma
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Hitendra A Mali
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Rutesh R Shah
- Department of Chemistry, K.K.Shah Jarodwala Maninagar Science College, Gujarat University, Ahmedabad, Gujarat, 380008, India
| | - Pranav S Shrivastav
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad, Gujarat, 380009, India
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Kanth P, Shankar Rao D, Krishna Prasad S, Singh B. Investigation of mesomorphic, photophysical and gelation behavior in aroylhydrazone based liquid crystals: Observation of mesophase crossover phenomena. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mahalakshmi D, Saranya J, Benhiba F, Warad I, Zarrouk A, Chitra S. Aminothiazolyl coumarin derivatives as effectual inhibitors to alleviate corrosion on mild steel in 0.5 M H2SO4. J APPL ELECTROCHEM 2021. [DOI: 10.1007/s10800-021-01588-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Santos AB, Manfredi AM, Salla CA, Farias G, Girotto E, Eccher J, Westphal E, Curcio SF, Cazati T, Malvestiti I, Falcão EH, Bechtold IH, Gallardo H. Highly luminescent liquid crystals by connecting 1,3,4-oxadiazole with thiazolo[5,4-d]thiazole units. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114887] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Öztürkkan Özbek FE, Uğurlu G, Kalay E, Necefoğlu H, Hökelek T. Theoretical and experimental assesment of structural, spectroscopic, electronic and nonlinear optical properties of two aroylhydrazone derivative. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.128982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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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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