2D Coordination Network of Trioxotriangulene with Multiple Redox Abilities and Its Rechargeable Battery Performance

Abstract

<jats:p>A three-fold symmetric trioxotriangulene derivative with three pyridyl groups as coordinating sites was designed and synthesized. In a cyclic voltammetry measurement, the trioxotriangulene skeleton exhibited a multi-stage redox ability from neutral radical to radical tetra-anion species. In the zinc complex of monoanion species, three pyridyl groups coordinated to the zinc ion to build up a two-dimensional coordination network with a cavity larger than 12 Å in diameter. This complex was utilized as a cathode active material of a lithium ion battery, and it exhibited a capacity of ca. 60 mAh g−1 per the weight of the active material with a stable cycling performance up to 1000 cycles. This work shows that the coordination network formed by the trioxotriangulene-based ligand was effective in the improvement of cycle performance of the organic rechargeable battery.</jats:p>

High Capacity and Energy Density Organic Lithium‐Ion Battery Based on Buckypaper with Stable π‐Radical

“…Recently, we developed a new class of organic cathode active material showing a high charge storage capacity derived from the multistage redox ability, 4,8,12-trioxotriangulene (R 3 TOT; Figure 1) neutral radicals. [64][65][66][67] The tert-butylated t-Bu 3 TOT and brominated Br 3 TOT showed high specific capacities, and also the latter exhibited a high cycle stability based on robust intermolecular interactions. [68,69] However, since these cathodes contained large amounts of conductive additives, binders, and metal current collectors, the amounts of active material in the cathodes were considerably small (Table S5).…”

Preliminary chemical reduction for synthesizing a stable porous molecular conductor with neutral metal nodes

“…This approach is advantageous due to the variety of useable ligands and the availability of single crystals. [14][15][16][17][18][19] However, only a few MOFs possess sufficient amounts of conduction carriers in the through-space conduction pathways. [20][21][22] Incorporating numerous conduction carriers was possible by applying an electrocrystallization method, which is typically used for the preparation of molecular conductors.…”

The Physical Chemistry and Chemical Physics (PCCP) Section of the International Journal of Molecular Sciences in Its Publications: The First 300 Thematic Articles in the First 3 Years

“…In this Thematic Area, 56 articles have been published [ 48 , 64 , 104 , 108 , 110 , 124 , 195 , 252 , 253 , 254 , 255 , 256 , 257 , 258 , 259 , 260 , 261 , 262 , 263 , 264 , 265 , 266 , 267 , 268 , 269 , 270 , 271 , 272 , 273 , 274 , 275 , 276 , 277 , 278 , 279 , 280 , 281 , 282 , 283 , 284 , 285 , 286 , 287 , 288 , 289 , 290 , 291 , 292 , 293 , 294 , 295 , 296 , 297 , 298 , 299 , 300 ], an...…”

“…A more detailed examination shows that, in this direction, as well as in the previous ones, articles in which the objects of research are organic materials clearly prevail over articles in which the objects of research are inorganic materials (36 and 20, respectively). Wherein, the overwhelming majority of articles of the “organic” profile are, in one way or another, connected with the participation of the objects with a biological origin; these include [ 64 , 124 , 254 , 255 , 256 , 257 , 258 , 259 , 260 , 261 , 262 , 263 , 274 , 277 , 278 , 282 , 284 , 289 , 291 , 292 , 293 , 294 , 295 , 296 , 298 , 299 , 300 ] and the processes in abiogenic organic materials were considered only in [ 48 , 195 , 266 , 271 , 272 , 273 , 283 , 288 , 290 ]. The thematic focus of these works, as well as the chemical compounds studied in them, is also very diverse, and even a simple listing of them here is clearly beyond the scope of this article, too.…”