Selective Sensing of Metal Ions and Nitro Explosives by Efficient Switching of Excimer-to-Monomer Emission of an Amphiphilic Pyrene Derivative | Zendy

S.C. Deshmukh | Zendy; Shammi Rana | Zendy; Sopan Shinde | Zendy; Barun Dhara | Zendy; Nirmalya Ballav | Zendy; Pinaki Talukdar | Zendy

Open Access

Selective Sensing of Metal Ions and Nitro Explosives by Efficient Switching of Excimer-to-Monomer Emission of an Amphiphilic Pyrene Derivative

Author(s) -

S.C. Deshmukh,

Shammi Rana,

Sopan Shinde,

Barun Dhara,

Nirmalya Ballav,

Pinaki Talukdar

Publication year - 2016

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.6b00136

Subject(s) - pyrene , excimer , chemistry , metal ions in aqueous solution , photochemistry , nitro , molecule , amphiphile , monomer , metal , selectivity , derivative (finance) , inorganic chemistry , organic chemistry , fluorescence , copolymer , alkyl , polymer , physics , economics , financial economics , quantum mechanics , catalysis

An amphiphilic pyrene derivative exhibiting unusually stable excimer emission due to strong aggregation is presented. The aggregated system served as an intelligent sensor for metal ions and nitro explosives in aqueous media. The excimer displayed excellent selectivity toward Cu 2+ among the tested cations. The observation was interpreted on the basis of chelation of metal ions involving the hydroxyl and amino groups of two molecules, leading to the ligand-to-metal charge-transfer (CT) process. The excimer was further applied for the cell imaging of Cu 2+ ions. Also, while treating the excimer with various nitro explosives, it displayed efficient 2,4,6-trinitrophenol sensing, corroborating mainly the CT process from pyrene to the analyte due to intercalation of the analyte within pyrene.

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