4371-32-8Relevant academic research and scientific papers
Electrochemically manipulating the redox state of 2,2′,5,5′-tetrahydroxybiphenyl as a new organic Li-rich cathode for Li-ion batteries
Fan, Cong,Li, Di,Shi, Jianyou,Tang, Wu,Wang, Chuan,Yao, Zeyi,Yu, Qihang
, (2020)
For the first time, a small organic molecule of 2,2′,5,5′-tetrahydroxybiphenyl (BP4OH) is synthesized as a new organic cathode for Li-ion batteries. After setting reduction in the 1st cycle in Li-ion half cells (reduction→oxidation), BP4OH can be in-situ transformed to its salt of lithium 2,2′-bis[benzene-1,4-bis(olate)] (BP4OLi) on Al foil. The resulting BP4OLi is a Li-rich organic cathode and exhibits very good cell performance. For example, the average capacity of ~155 mAh g?1 for the BP4OLi electrode is realized during 600 cycles (500 mA g?1). On the other hand, after setting oxidation in the 1st cycle (oxidation→reduction), BP4OH can be in-situ tuned to its oxidized state of 2,2′-bis(1,4-benzoquinone) (BBQ). Interestingly, the resulting BBQ can be still redox-active and show satisfactory cell performance. For instance, the average capacity of ~101 mAh g?1 for the BBQ electrode can be obtained for 600 cycles (500 mA g?1). This work reveals very interesting redox behaviors of organic electrodes.
Novel features in the oxidation of dihydroxy benzenes by 2,6-dichloroquinone-4-chloro-imide in acetic acid and sodium acetate buffer medium
Madhavi,Syama Sundar,Radhakrishna Murti
, p. 242 - 245 (2007/10/03)
Kinetics of oxidation of quinol, catechol and resorcinol by 2,6-dichloroquinone-4-chloro-imide (DCQCI) in CH3COOH-NaOAc system is reported. The kinetic features of ortho dihydroxy and para dihydroxy benzenes are similar. The reactions are zero order in oxidant at lower concentrations of oxidant (below 0.0005 M) and fractional order in substrate. At higher concentrations of oxidant, these two compounds exhibit first order in oxidant and fractional order in substrate leading to independence. Resorcinol exhibits different kinetic features: first order in oxidant at all concentrations and fractional order in substrate. The major products are coupling products under these conditions. Reactivity order is resorcinol 〉 catechol 〉 quinol. This result is novel. A mechanism is postulated to explain the observed order and a suitable rate law has been derived.
p-Doped high spin polymers
Bushby, Richard J.,McGill, David R.,Ng, Kai M.,Taylor, Norman
, p. 2343 - 2354 (2007/10/03)
High spin polymers have been created from p-doping of networked polyaryl and polyarylamine polymers which were synthesized using the Pd0 mediated coupling reaction of aryl di- and tri-bromides with aryl bis- and tris-boronic acids. The doping p
Oxidative coupling of dichloroaluminium phenolates: Highly selective synthesis of hydroxylated Bi- and tetraaryls
Sartori, Giovanni,Maggi, Raimondo,Bigi, Franca,Arienti, Attilio,Casnati, Giuseppe,Bocelli, Gabriele,Mori, Giovanni
, p. 9483 - 9494 (2007/10/02)
Dichloroaluminium phenolates 4 undergo highly selective FeCl3-promoted oxidative coupling. Variously substituted symmetric 2,2′-dihydroxy biaryls 2 are obtained in good yields and excellent selectivities. The chelation control in the final reaction products 7 promotes the chemoselectivity of the process.
Regiochemical Control in the Oxidative Coupling of Metal Phenolates: Highly Selective Synthesis of Symmetric, Hydroxylated Biaryls
Sartori, Giovanni,Maggi, Raimondo,Bigi, Franca,Arienti, Attilio,Casnati, Giuseppe
, p. 2207 - 2210 (2007/10/02)
Oxidative coupling of highly coordinating metal phenolates promoted by FeCl3 afforded variously substituted symmetric 2,2'-dihydroxy biaryls in good yield and high regiochemical control. Key words: Oxidative coupling; metal phenolates; 2,2'-dihydroxy biar
