A1 Journal article (refereed)
Unravelling substitution effects on charge transfer characteristics in cocrystals of pyrene based donors and 3,5-dinitrobenzoic acid (2019)
Mandal, A., Rissanen, K., & Mal, P. (2019). Unravelling substitution effects on charge transfer characteristics in cocrystals of pyrene based donors and 3,5-dinitrobenzoic acid. CrystEngComm, 21(29), 4401-4408. https://doi.org/10.1039/c9ce00561g
JYU authors or editors
Publication details
All authors or editors: Mandal, Arkaleka; Rissanen, Kari; Mal, Prasenjit
Journal or series: CrystEngComm
eISSN: 1466-8033
Publication year: 2019
Volume: 21
Issue number: 29
Pages range: 4401-4408
Publisher: Royal Society of Chemistry
Publication country: United Kingdom
Publication language: English
DOI: https://doi.org/10.1039/c9ce00561g
Publication open access: Not open
Publication channel open access:
Abstract
Here we report charge-transfer cocrystals composed of pyrene and amino/bromopyrene as π-donors (D) and 3,5-dinitrobenzoic acid (A) as a π-acceptor. The 1:1 cocrystals of pyrene/1-aminopyrene adopt a ⋯DADADA⋯ mixed stack arrangement whereas the 2:1 cocrystal of 1-bromopyrene and 3,5-dinitrobenzoic acid shows ⋯DDADDA⋯ stacking. Crystallographic, spectral and theoretical studies reveal that the frontier molecular orbital energy level rather than the π-donor strength plays the governing role in predicting charge transfer. In addition, a theoretical study demonstrates that the ambipolar semiconductor nature in cocrystals of the pyrene/aminopyrene donor and the p-type nature of bromopyrene with the 3,5-dinitrobenzoic acid acceptor are governed solely by the supramolecular structure and not by other factors.
Keywords: supramolecular chemistry; organic compounds; crystals; chemical bonds
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2019
JUFO rating: 1