《ON/OFF Photoswitching and Thermoinduced Spin Crossover with Cooperative Luminescence in a 2D Iron(II) Coordination Polymer》 was written by Ghosh, Subrata; Kamilya, Sujit; Pramanik, Titas; Rouzieres, Mathieu; Herchel, Radovan; Mehta, Sakshi; Mondal, Abhishake. Related Products of 2510-22-7 And the article was included in Inorganic Chemistry in 2020. The article conveys some information:
A 2D coordination polymer, {[Fe(L)2(NCSe)2]·6MeOH·14H2O}n (1; L = 2,5-dipyridylethynylene-3,4-ethylenedioxythiophene), has been synthesized based on a redox active luminescence ligand. 1 possesses a 2D [4 x 4] square-grid network where the iron(II) center is in a FeN6 octahedral coordination environment. 1 displays reversible thermoinduced high-spin (HS; S = 2) to diamagnetic low-spin (LS; S = 0) ON/OFF spin-state switching with a T1/2 value of 150 K. Interestingly, optical reflectivity and photomagnetic studies at 10 K under light irradiation revealed an efficient conversion to a photoinduced metastable HS excited state from a LS ground state. Remarkably, the photoexcited HS state can be reversibly switched ON and OFF by using 625 and 850 nm light-emitting-diode lights. Intriguingly, the thermal dependence of the luminescence intensity of the maximum emission at 524 nm for 1 shows a min. at around the spin-crossover (SCO) temperature, indicating a cooperative nature between the SCO and luminescence properties. Theor. calculations confirmed the above findings. A 2D [4 x 4] square-grid iron(II) coordination polymer based on a 3,4-ethylenedioxythiophene-containing redox active luminescence ligand has been investigated. Temperature and/or light irradiation significantly alters the cooperative magnetic and optical properties, implying that the material exhibits reversible thermo- and photoinduced ON/OFF spin-state switching behavior with cooperative luminescence properties. The experimental process involved the reaction of 4-Ethynylpyridine(cas: 2510-22-7Related Products of 2510-22-7)
4-Ethynylpyridine(cas: 2510-22-7) belongs to pyridine. When pyridine is adsorbed on oxide surfaces or in porous materials, the following species are commonly observed: (i) pyridine coordinated to Lewis acid sites, (ii) pyridine H-bonded to weakly acidic hydroxyls, and (iii) protonated pyridine. At high coverage, physisorbed pyridine and protonated dimers can also be observed.Related Products of 2510-22-7