Tpb-based Lises
Tpb-based Lises - Related Videos
06:56
1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions
0 Views •
Cited by 4 •
2016
The authors report on conductivity studies carried out on lithium solvated electron solutions (LiSES) prepared using 1,3,5-triphenylbenzene (TPB) and corannulene as electron receptors.
01:54
Base Excision Repair
0 Views •
2020
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template. The first step of...
06:35
Acid and Base Concentrations - Concepts
0 Views •
2020
Acids and Bases An Arrhenius acid produces hydrogen ions when it is dissolved in water: HA + H2O → H+(aq) + A-(aq) Here, HA is the non-dissociated acid, H+ is the hydrogen cation, and A- is the solvated anion — called the conjugate base. An Arrhenius base produces hydroxide ions when dissolved in water: BOH + H2O → B+(aq) + OH-(aq) Here, BOH is the non-dissociated base, OH- is the hydroxide ion, and B+ is the solvated cation — called the conjugate acid. A conjugate base is formed when an acid...
02:27
DNA Base Pairing
0 Views •
2020
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule, the amount of adenine (A) is equal to the amount of thymine (T); the amount of guanine (G) is equal to the amount of cytosine (C); and the sum of purines, A and G, is equal to the sum of pyrimidines, C and T (i.e., A+G = C+T). Later work by Watson and Crick revealed that in double-stranded DNA, A always forms two hydrogen bonds...
02:33
Lewis Acids and Bases
0 Views •
2020
In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond. A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
FAQs
Pore architecture determines how effectively the framework accommodates sulfur and provides contact between active material, ions, and electronically connected regions. A suitable porous environment can improve sulfur accessibility while also creating pathways that reduce limitations during electrochemical cycling. Studying pore structure therefore helps connect molecular design with sulfur utilization, electrode stability, and capacity retention.
Chemical functionalities can influence how the organic framework interacts with sulfur species and soluble lithium polysulfide intermediates. These interactions are important because polysulfide migration contributes to instability in conventional lithium-sulfur cells. Modifying the framework chemistry provides a way to investigate whether stronger sulfur compatibility and improved intermediate confinement support more stable electrochemical behavior.
Their engineered structure targets several limitations at the same time rather than focusing only on sulfur loading. Porous environments can host active sulfur, while framework structure and chemical functionality help support ion and electron transport and restrict soluble intermediate migration. The intended outcome is improved sulfur utilization, better capacity retention, and a more stable sulfur electrode.
Researchers can compare the effects of organic framework structure, chemical functionality, and pore architecture on electrochemical behavior. These variables help reveal whether performance changes arise from sulfur compatibility, active-material accommodation, transport pathways, or intermediate confinement. Such comparisons make the system useful for examining how molecular engineering translates into measurable electrode stability and sulfur utilization.
Electrochemical evaluation can show how effectively the sulfur electrode uses its active material, retains capacity, and remains stable during operation. Differences among TPB-derived designs can be interpreted in relation to their framework structure, pore environment, and chemical functionality. This connects observable battery behavior with the molecular and architectural features engineered into the electrode material.
These materials provide a chemistry-focused platform for studying relationships among molecular structure, chemical functionality, pore architecture, and electrochemical performance. That connection is relevant to high-energy battery development because sulfur-electrode behavior depends on both material composition and the environment surrounding the active species. The designs therefore support fundamental investigations as well as improved lithium-sulfur energy-storage technologies.