Fine‐Tuning of Saponification‐Triggered Gelation by Strategic Modification of Peripheral Substituents: Gelation Regulators |
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| Authors: | Ashish Kumar Roop Shikha Singh Amit Kumar Afsar Ali Arnab Biswas Prof. Dr. Daya Shankar Pandey |
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| Affiliation: | Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India |
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| Abstract: | A pioneering approach towards controlling the efficiency of saponification assisted gelation in ethyl ester based ZnII‐complexes have been described. Using four new ester containing bis‐salen ZnII complexes ( C1–C4 ) involving different para‐azo phenyl substituted ligands it has been clearly shown that gelation efficiency is greatly influenced by the electronic effects of the substituents (‐H ( C1 ), ‐CH3 ( C2 ), ‐NO2 ( C3 ), and ‐OCH3 ( C4 )). Morphological, photophysical, and rheological investigations corroborated the experimental observations well and established that gelation efficiency was enhanced with electron‐withdrawing characteristics of substituents ( C4 < C2 < C1 < C3 ). This conclusion was also supported by DFT studies. |
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| Keywords: | conformational transformation gels J-aggregation luminescence saponification trigger |
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