Synthesis and Properties of New Phosphorescent Red Light-Excitable Platinum(II) and Palladium(II) Complexes with Schiff Bases for Oxygen Sensing and Triplet鈥揟riplet Annihilation-Based Upconversion

详细信息    查看全文

• 作者：Sergey M. Borisov ; Robert Saf ; Roland Fischer ; Ingo Klimant
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：February 4, 2013
• 年：2013
• 卷：52
• 期：3
• 页码：1206-1216
• 全文大小：560K
• 年卷期：v.52,no.3(February 4, 2013)
• ISSN：1520-510X

文摘

New Pt(II) and Pd(II) complexes with donor鈥揳cceptor Schiff bases are conveniently prepared in only two steps. The complexes efficiently absorb in the red part of the spectrum (蔚 > 10⁵ M^鈥? cm^鈥?) and show moderate to strong room-temperature phosphorescence in the near-infrared (NIR) region. Particularly, Pt(II) complexes possess phosphorescence quantum yields (桅) of 10%, but the emission of the respective Pd(II) complexes is less efficient (桅 鈮?1%鈥?%). The complexes exhibit solvatochromic behavior, in which the absorption and emission spectra shift bathochromically in polar solvents. The Pt(II) complexes are embedded in polystyrene to produce oxygen-sensing materials. The Pd(II) and Pt(II) complexes are demonstrated to be efficient sensitizers in triplet鈥搕riplet annihilation-based upconversion systems.