Luminescent Mechanochromic 9‑Anthryl Gold(I) Isocyanide Complex with an Emission Maximum at 900 nm after Mechanical Stimulation

Upon mechanical stimulation, 9-anthryl gold­(I) isocyanide complex 3 exhibited a bathochromic shift of its emission color from the visible to the infrared (IR) region, which is unprecedented in its magnitude. Prior to exposure to the mechanical stimulus, the polymorphs 3α and 3β exhibit emission wav...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2017-05, Vol.139 (19), p.6514-6517
Main Authors: Seki, Tomohiro, Tokodai, Noriaki, Omagari, Shun, Nakanishi, Takayuki, Hasegawa, Yasuchika, Iwasa, Takeshi, Taketsugu, Tetsuya, Ito, Hajime
Format: Article
Language:English
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Summary:Upon mechanical stimulation, 9-anthryl gold­(I) isocyanide complex 3 exhibited a bathochromic shift of its emission color from the visible to the infrared (IR) region, which is unprecedented in its magnitude. Prior to exposure to the mechanical stimulus, the polymorphs 3α and 3β exhibit emission wavelength maxima (λem,max) at 448 and 710 nm, respectively. Upon grinding, the λem,max of 3α ground and 3β ground are bathochromically shifted to 900 nm, i.e., Δλem,max (3α) = 452 nm or 1.39 eV. Polymorphs 3α and 3β thus represent the first examples of mechanochromic luminescent materials with λem,max in the IR region.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.7b00587