Self-aggregation, H-bonding, and photoresponse in film and solution states of azobenzene containing polyurea

Abstract

We critically understand the hydrogen bonding interactions and electronic transitions occurring in a thin film as well as in solution of a photo-responsive polymer, azo-polyurea (azo-PU). We synthesize azo-PU by...

Spatiotemporally Controllable Electrical Stimulator via Independent Photobending and Upconversion Photoluminescence Using Two Different Wavelengths of Near-Infrared/Visible Light as Dual Stimuli

“…Although the isomer stability of azobenzene in the polymer is primarily determined by the polarity of dipole moment in the trans - and cis -forms, other factors including van der Waals force, hydrogen bonding, molecular weight, alignment of polymer, and steric hindrance are also known to have an effect. For instance, previous research on an azobenzene-based organic semiconductor polymer demonstrated that an equilibrium state of the film (condensed phase) comprises a combination of trans - and cis -forms due to steric hindrance in contrast to the dispersion in solution (liquid phase).…”

Impact of Structural Modifications on Ultrafast Correlation-Driven Charge Migration in Organic Molecules: For Molecular Engineering

“…One can further utilize this study for evaluating the molecules to increase the interfacial charge dynamics, stability, efficiency and lifetime of perovskite materials [226,227,228]. This study can be extended to understand the influence of solvent or intermolecular interactions [229,230] on the charge migration dynamics and the nonlinear optical properties such as high harmonic spectra [231]. Hence, we hope our results will encourage and inspire further research in the direction of molecular modelling.…”

“…A tanulmány segítségével értékelhetők a molekulák annak érdekében, hogy növeljük a perovszkit anyagok határfelületi töltésdinamikáját, stabilitását, hatásfokát és élettartamát [226,227,228]. A dolgozat tovább bővíthető, hogy megértsük a különböző közegek vagy molekulák közötti kölcsönhatások hatását a töltésmigrációs dinamikára [229,230] és olyan nemlineáris optikai tulajdonságokra, mint a magasharmonikus-keltés spektruma. [231] Reméljük, hogy az eredményeink további kutatásokra ösztönöznek és újabb utakat nyitnak a molekulamodellezés irányában.…”