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Aggregation enhanced emission (AEE) in organic salt: A structure-property correlation based on single crystal studies

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Abstract

Salt formation has been shown as a simple strategy to induce aggregated induced emission or aggregated enhanced emission in primary ammonium salts derived from 9-anthracene carboxylic acid, 1-pyrene carboxylic acid, 3-coumarin carboxylic acid and histamine. All the salts displayed enhanced fluorescence in their solid state compared to that in their solution state. Single crystal structure of the salt of 9-anthracene carboxylic acid i.e., His-anthracene revealed that restricted intramolecular rotation of the fluorphoric moiety (anthracene) was responsible for such radiative pathway leading to enhanced emission.

A simple strategy of salt formation has been exploited to induce aggregation-induced emission or aggregation-enhanced emission in primary ammonium salts derived from 9-anthracene carboxylic acid, 1-pyrenecarboxylic acid, coumarin-3-carboxylic acid and histamine.

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Acknowledgement

UKD thanks CSIR and IACS for fellowships. PD thanks IACS for infrastructure and financial support. Professor Amitava Patra, IACS is also thanked for solid state PL measurements in his laboratory.

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Authors and Affiliations

  1. Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S C Mullick Road, Jadavpur, Kolkata, 700 032, West Bengal, India

    UTTAM KUMAR DAS & PARTHASARATHI DASTIDAR

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  1. UTTAM KUMAR DAS
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  2. PARTHASARATHI DASTIDAR
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Correspondence to PARTHASARATHI DASTIDAR.

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Supplementary Information

CCDC No. 1001247 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.

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DAS, U.K., DASTIDAR, P. Aggregation enhanced emission (AEE) in organic salt: A structure-property correlation based on single crystal studies. J Chem Sci 126, 1357–1362 (2014). https://doi.org/10.1007/s12039-014-0710-0

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