Spectroscopic characterizations on the N,N'-bis-alkyl derivatives of 1,4,6,8-naphthalenediimide charge-transfer complexes

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Abstract

Charge-transfer (CT) complexes formed from the reactions of two N,N'-bis-alkyl derivatives of 1,4,6,8-naphthalenediimide such as N,N'-bis-[2-hydroxyethyl]-1,4,6,8-naphthalenediimide (BHENDI) and N,N'-bis-[2-N,N-dimethylaminoethyl]-1,4,6,8-naphthalenediimide (BDMAE NDI) with DDQ, CHL, TCNQ, DCQ and DBQ as π-acceptors have been studied spectrophotometrically in chloroform and/or methanol at 25 °C. The photometric titration curves for the reactions indicated that the data obtained refer to 1:1 charge-transfer complexes of [(BHENDI)(DDQ)], [(BDMAENDI)(DDQ)], [(BHENDI)(CHL)], [(BDMAENDI)(CHL)], [(BHENDI)(TCNQ)], [(BDMAENDI)(TCNQ)], [(BHENDI)(DCQ)], [(BDMAENDI)(DCQ)], [(BHENDI)(DBQ)] and [(BDMAENDI)(DBQ)] were formed. Benesi-Hildebrand and its modification methods were applied to the determination of association constant (K), molar extinction coefficient (ε). The solid CT complexes have been synthesized and characterization by different spectral methods. © 2010.

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Refat, M. S., Didamony, H. A., El-Nour, K. M. A., Grabchev, I., El-Zayat, L., & Adam, A. M. A. (2011). Spectroscopic characterizations on the N,N’-bis-alkyl derivatives of 1,4,6,8-naphthalenediimide charge-transfer complexes. Arabian Journal of Chemistry, 4(1), 83–97. https://doi.org/10.1016/j.arabjc.2010.06.024

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