Highly Selective Colorimetric and Luminescence Response of a Square-Planar Platinum(II) Terpyridyl Complex to Aqueous TcO4鈥?/sup>

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• 作者：Sayandev Chatterjee ; Amie E. Norton ; Matthew K. Edwards ; James M. Peterson ; Stephen D. Taylor ; Samuel A. Bryan ; Amity Andersen ; Niranjan Govind ; Thomas E. Albrecht-Schmitt ; William B. Connick ; Tatiana G. Levitskaia
• 刊名：Inorganic Chemistry
• 出版年：2015
• 出版时间：October 19, 2015
• 年：2015
• 卷：54
• 期：20
• 页码：9914-9923
• 全文大小：572K
• ISSN：1520-510X

文摘

Molecular recognition of an aqueous pertechnetate (TcOb>4b>^{鈥?/sup>) anion is fundamentally challenging partly due to the charge-diffuse nature of this anion, which hampers design of new technologies for its separation and detection. To address this gap, simple salts of transition metal complexes that undergo a distinct spectroscopic change upon exposure to aqueous anions were explored. The Pt(II) complex [Pt(tpy)Br]SbFb>6b> (tpy = 2,2鈥?6鈥?2鈥?terpyridine) undergoes a dramatic color change and intense luminescence response upon TcOb>4b>鈥?/sup> uptake due to concomitant enhancement of Pt路路路Pt interactions. The spectroscopic response was highly selective and quantitative for aqueous TcOb>4b>鈥?/sup> among other competing anions. Complementary Raman spectroscopy and microscopy techniques, structural determination, and theoretical methods were employed to elucidate the mechanism of this response at the molecular level.}