Metal-free photocatalyst was synthesized by attaching carbon dots (CDs) to cellulose nanofibers (CNFs) via simple in-situ synthesis. The graphitic core and functional groups of CD on CNF controlled along the precursor concentration, while fibrous structure intact. optical property samples profoundly analyzed focusing electron recombination pathway. It revealed that excited electrons in transfer...

Intermolecular Proton Transfer (PT) dynamics can be best studied by optical spectroscopy, which cover the vast timescale spanned process. PT in a hydrogen bonding complex between pyranine-based photoacid and trialkyl-phosphine oxide is addressed. The photoreaction traced with help of femtosecond transient absorption picosecond-resolved fluorescence. Characteristic kinetics spectra intervening s...

Nine AuX molecules (X = H, O, S, Se, Te, F, Cl, Br, I), their isoelectronic HgX analogues, and the corresponding neutral HgX diatomics have been investigated using NESC (Normalized Elimination of the Small Component) and B3LYP theory to determine relativistic effects for bond dissociation energies (BDEs), bond lengths, dipole moments, and charge distributions. Relativistic effects are substanti...

INTRODUCTION ADHESIVE DENTISTRY • Indications for Use of Adhesives • Advantages of Bonding Techniques • Mechanism of Adhesion • Factors Affecting Adhesion ENAMEL BONDING • Steps for Enamel Bonding • Mechanism of Etching DENTIN BONDING • Conditioning of Dentin • Priming of Dentin • Moist vs Dry Dentin DENTIN BONDING AGENT • Mechanism of Bonding • Evolution of Dentin Bonding Agents • Nanofilled B...

objectives: this study aimed to determine the effect of surface treatments such as tooth reduction and extending the etching time on microtensile bond strength (µtbs) of composite resin to normal and fluorotic enamel after microabrasion. materials and methods: fifty non-carious anterior teeth were classified into two groups of normal and fluorotic (n=25) using thylstrup and fejerskov index (tfi...

Process optimization of BCB polymer to silicon oxide bonding was investigated. The suitable bonding temperature is about 300 C, while bond failure of BCB-to-oxide bonding is observed starting from 400 C. Bonding interface morphologies and bond strengths of BCB-to-oxide bonding were investigated as well. PECVD oxide to BCB bonding has better bonding quality than that of thermal oxide to BCB bond...