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Observation of Contrary Thermo-responsive Trend for Single Crystal and Powder Samples in Mechano-, Thermo- and Solvato-responsive Luminescent Cubane [Ag4I4L4] Cluster.


ABSTRACT: A new silver(I) iodide cluster [Ag4I4(TMP)4] (TMP?=?tris(3-methylphenyl)-phosphine) 1 shows triply stimuli-responsive luminescent chromism, namely, mechano-, thermo- and solvent-responsive chromism, which is isostructural to our previously reported [Cu4I4(TMP)4] 2 but shows quite different luminescence in response to the external stimuli. Especially, during the mechanical grinding, the relative intensities of HE and LE of 1 varied with a concomitant hypsochromic shift, and when the temperature was decreased from 300 to 5?K, unprecedented contrary thermo-responsive trend for single crystal and powered samples (blueshift of single crystals and redshift of powdered samples) was observed. These distinct characters of 1 should be due to the different molecular packing modes, metallic interactions and the unique character of Ag(I) ion.

SUBMITTER: Li SL 

PROVIDER: S-EPMC5638816 | biostudies-other | 2017 Oct

REPOSITORIES: biostudies-other

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Observation of Contrary Thermo-responsive Trend for Single Crystal and Powder Samples in Mechano-, Thermo- and Solvato-responsive Luminescent Cubane [Ag<sub>4</sub>I<sub>4</sub>L<sub>4</sub>] Cluster.

Li Shi-Li SL   Han Min M   Wu Bin B   Wang Jie J   Zhang Fu-Qiang FQ   Zhang Xian-Ming XM  

Scientific reports 20171012 1


A new silver(I) iodide cluster [Ag<sub>4</sub>I<sub>4</sub>(TMP)<sub>4</sub>] (TMP = tris(3-methylphenyl)-phosphine) 1 shows triply stimuli-responsive luminescent chromism, namely, mechano-, thermo- and solvent-responsive chromism, which is isostructural to our previously reported [Cu<sub>4</sub>I<sub>4</sub>(TMP)<sub>4</sub>] 2 but shows quite different luminescence in response to the external stimuli. Especially, during the mechanical grinding, the relative intensities of HE and LE of 1 varied  ...[more]

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