Journal Pre-proof Colorimetric assay of fluoride goes digital: On the spot testing of F− ions in water using smartphone's digital imaging and test strip assay by a novel chromofluorogenic receptor based on 1,8-naphthalimide Priya Yadav, Harshita Laddha, Madhu Agarwal, Ragini Gupta PII: S0167-7322(20)36932-4 DOI: https://doi.org/10.1016/j.molliq.2020.114690 Reference: MOLLIQ 114690 To appear in: Journal of Molecular Liquids Received date: 8 September 2020 Revised date: 24 October 2020 Accepted date: 29 October 2020 Please cite this article as: P. Yadav, H. Laddha, M. Agarwal, et al., Colorimetric assay of fluoride goes digital: On the spot testing of F− ions in water using smartphone's digital imaging and test strip assay by a novel chromofluorogenic receptor based on 1,8-naphthalimide, Journal of Molecular Liquids (2020), https://doi.org/10.1016/ j.molliq.2020.114690 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier.