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Molecular Ruby under Pressure
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-07-18 , DOI: 10.1002/anie.201806755
Sven Otto 1, 2 , Joe P. Harris 3 , Katja Heinze 1 , Christian Reber 3
Affiliation  

The intensely luminescent chromium(III) complexes [Cr(ddpd)2]3+ and [Cr(H2tpda)2]3+ show surprising pressure‐induced red shifts of up to −15 cm−1 kbar−1 for their sharp spin‐flip emission bands (ddpd=N,N′‐dimethyl‐N,N′‐dipyridine‐2‐yl‐pyridine‐2,6‐diamine; H2tpda=2,6‐bis(2‐pyridylamino)pyridine). These shifts surpass that of the established standard, ruby Al2O3:Cr3+, by a factor of 20. Beyond the common application in the crystalline state, the very high quantum yield of [Cr(ddpd)2]3+ enables optical pressure sensing in aqueous and methanolic solution. These unique features of the molecular rubies [Cr(ddpd)2]3+ and [Cr(H2tpda)2]3+ pave the way for highly sensitive optical pressure determination and unprecedented molecule‐based pressure sensing with a single type of emitter.

中文翻译:

压力下的分子红宝石

强烈发光的铬(III)络合物[Cr(ddpd)2 ] 3+和[Cr(H 2 tpda)2 ] 3+表现出令人惊讶的压力诱导红移,其陡峭程度高达-15 cm -1  kbar -1自旋翻转发射带(ddpd = NN'-二甲基-NN'-二吡啶-2-基吡啶2,6-二胺; H 2 tpda = 2,6-二(2-吡啶基氨基)吡啶) 。这些变化超过了已建立标准的红宝石Al 2 O 3:Cr 3+,除以20的倍数。除了在晶体状态下的常见应用之外,[Cr(ddpd)2 ] 3+的非常高的量子产率使得能够在水溶液和甲醇溶液中进行光学压力感测。分子红宝石[Cr(ddpd)2 ] 3+和[Cr(H 2 tpda)2 ] 3+的这些独特功能为通过单一类型的发射器进行高度灵敏的光学压力测定和空前的基于分子的压力感测铺平了道路。 。
更新日期:2018-07-18
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