Highly Selective Colorimetric and Luminescence Response of a Square-Planar Platinum(II) Terpyridyl Complex to Aqueous TcO₄^-

Journal Article · Thu Oct 08 04:00:00 EDT 2015 · Inorganic Chemistry

DOI:https://doi.org/10.1021/acs.inorgchem.5b01664· OSTI ID:1229936

Chatterjee, Sayandev; Norton, Amie E.; Edwards, Matthew K.; Peterson, James M.; Taylor, Stephen D.; Bryan, Samuel A.; Andersen, Amity; Govind, Niranjan; Albrecht-Schmitt, Thomas E.; Connick, William; Levitskaia, Tatiana G.

In an effort to address the need for a rapid, selective and economical detection technique for aqueous pertechnetate (TcO₄^-) anion based on recognition at the molecular level, 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]SbF₆ (tpy=2,2';6',2"-terpyridine) undergoes a dramatic color change and intense luminescence response upon TcO₄^- uptake due to concomitant enhancement of Pt•••Pt interactions. The spectroscopic response was highly selective and quantitative for aqueous TcO₄^- among other competing anions. Complimentary Raman spectroscopy and microscopy techniques, structural determination and theoretical methods were employed to achieve molecular-level understanding of the mechanism of the response to aqueous TcO₄^-.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1229936
• Report Number(s): PNNL--SA-110957; 47928
• Journal Information: Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 20 Vol. 54; ISSN 0020-1669
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

Environmental Molecular Sciences Laboratory