Temperature-Responsive Fluorescent Organoplatinum(II) Metallacycles

Journal of the American Chemical Society
Jian-Hong TangPeter J Stang

Abstract

The synthesis, characterization, and temperature-responsive properties of two fluorescent organoplatinum(II) metallacycles are reported. Metallacycles M1 and M2 were prepared via the coordination-driven self-assembly of a 120° triarylamine ligand L1 and a 120° diplatinum(II) acceptor Pt-1 or 180° diplatinum(II) acceptor Pt-2, respectively. M1 and M2 are hexagonal metallacycles, comprising of three or six freely rotating anthracene pendants on their periphery, respectively. In response to the temperature variation between -20 and 60 °C, the ligand displays irregular emission changes, whereas both metallacycles show reversible absorption and emission spectral changes in THF. The changes in their green emission intensity also exhibit a linear correlation with the temperature variation, with an average sensitivity of -0.67% and -0.77% per °C for M1 and M2, respectively. Furthermore, in coordinating solvents, such as DMF and CH3CN, M1 and M2 show different behaviors: in the lower temperature range, i.e., below 30 °C, their spectral changes are similar to those observed in THF; however, at a higher temperature the metallacycles were presumably destroyed by the solvents and displayed ratiometric fluorescent responses, including a cyan...Continue Reading

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Citations

Jul 4, 2019·Chemical Communications : Chem Comm·Zhixiang LuHongbin Zhang
Jul 30, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Amarasooriya M D S JayawardhanaYao-Rong Zheng
Feb 13, 2021·Journal of the American Chemical Society·Yanrong LiPeter J Stang
Mar 6, 2021·ChemPlusChem·Nilanjan Dey, Cally J E Haynes
Apr 20, 2021·Chembiochem : a European Journal of Chemical Biology·Yuhan LiuFengling Song
Dec 5, 2019·Chemical Science·Zhenpin LuJonathan R Nitschke
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mingliang GuiFeng Wang
Aug 11, 2021·Chemistry : a European Journal·Sandra Míguez-LagoMaría Magdalena Cid
Sep 4, 2019·Journal of the American Chemical Society·Koushik AcharyyaPeter J Stang
Nov 27, 2018·Journal of the American Chemical Society·Huang WuJ Fraser Stoddart
Feb 28, 2019·Inorganic Chemistry·Soumalya BhattacharyyaPartha Sarathi Mukherjee
Jan 16, 2020·Journal of the American Chemical Society·Zeyuan ZhangMingming Zhang
Oct 6, 2020·Journal of the American Chemical Society·Huangtianzhi ZhuPeter J Stang
Sep 19, 2019·Inorganic Chemistry·Jian-Hong TangPeter J Stang
Nov 11, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Liancheng HeQi-Hua Zhao

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