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Mechano-fluorochromic Pt-II Luminogen and Its Cysteine Recognition

Chowdhury, Aniket and Howlader, Prodip and Mukherjee, Partha Sarathi (2016) Mechano-fluorochromic Pt-II Luminogen and Its Cysteine Recognition. In: CHEMISTRY-A EUROPEAN JOURNAL, 22 (4). pp. 1424-1434.

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Official URL: http://dx.doi.org/10.1002/chem.201504003

Abstract

A new triphenylamine-based organometallic Pt-II luminogen (1) and its analogous organic compound (2) are reported. The molecules are decorated with aldehyde functionality to improve their photophysical properties by utilising donor-acceptor interactions. The single crystal X-ray structure analysis of PtII analogue 1 revealed that the neighbouring molecules were loosely organised by weak intermolecular C-H center dot center dot center dot pi interactions. Because of the twisted nature of the triphenylamine backbone the compounds showed aggregation-induced emission enhancement in THF/water mixture. Due to their loose crystal packing, upon application of external stimuli these luminogens exhibited mechano-fluorochromic behaviour. The crystalline forms of the compounds displayed a more superior emission efficiency than the grinded samples. Moreover, the compounds showed crystallization-induced emission enhancement (CIEE) and exhibited chemodosimetric response towards cysteine under physiological condition.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY
Keywords: coordination compounds; fluorescence; organometallic chemistry; platinum; sensing
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 04 Mar 2016 07:53
Last Modified: 04 Mar 2016 07:53
URI: http://eprints.iisc.ac.in/id/eprint/53313

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