Comprehensive study on photophysical properties of Eu(TTA)3bipy phosphor molecularly doped in PMMA and PS matrices

Investigations on optical properties of Eu0.5Sm0.5(TTA)3tppo hybrid organic complexes molecularly doped in PMMA and PS matrices

“…[ 18 ] Prior states also support this finding [ 19,20 ] A noteworthy point to mention is that PMMA and PS are inert and, therefore, the intensity obtained from the complexes is solely due to energy transfer between ligand TTA and the europium central ion. [ 21 ]…”

A high-performance organic thin-film transistor with Parylene/PMMA bilayer insulation based on P3HT

“…High-performance organic field-effect transistors require a dielectric with low surface polarity and high insulation properties, but it is challenging to achieve both properties in a single-layer dielectric. 27 , 28 , 29 , 30 , 31 , 32 To solve the problem, a double-layer gate dielectric was utilized, which included a low-surface-polarity dielectric in contact with the active layer and a high-k insulating layer underneath. This improved the performance of OTFTs by better controlling the interfacial properties, despite the increase in the total dielectric thickness.…”

Stimuli-Responsive Self-Healing Luminescent Materials Based on Lanthanide Ions and Bipyridine Moieties

“…Luminescent metallo-supramolecular polymers derived from the coordination between ditopic ligands and lanthanide ions (Ln 3+ ) have been reported to exhibit superior self-healing behavior. − Unfortunately, their mechanical strength is insufficient for processing into self-standing films, which hinders their practical implementation in self-healing light-converting films. − The combination of dense coordination bonds and hydrogen bonds (H-bonds) within the polymer chain can endow the final products with intriguing self-healing properties and satisfactory mechanical strength. − Transition metal ions such as Zn 2+ , Cu 2+ , and Fe 3+ are commonly employed to coordinate with ligands attached to polymer chains, forming robust self-healing polymers. − Motivated by this concept, our group recently reported luminescent polymers through the coordination bonds between Ln 3+ and polymer ligands containing terpyridine as well as H-bonds among the polymer chains. These polymers exhibit high luminescence characteristics typical of lanthanide complexes, resulting from energy transfer from ligands to Ln 3+ , and promising mechanical strength alongside remarkable self-healing abilities due to the reversibility of the coordination bonds and H-bonds within these systems. , Furthermore, stimulus-responsive luminescence has been simultaneously achieved in certain instances. , In addition, the luminescence, self-healing, mechanical properties, and stimulus-responsiveness of these polymers can be conveniently modulated by altering the ligand moieties capable of coordinating with Ln 3+ and the structure of the polymer chain to which the ligands are tethered. , However, most luminescent polymers tend to lose their exceptional mechanical properties under high humidity as polymers with polar groups can absorb water and become easily plasticized. − Moreover, the transmittance of such polymers significantly decreases due to the presence of absorbed water, impeding their application in optical and display devices .…”