Benzoylphenylureas (BPUs) are used as synthetic insect growth regulators for inhibiting chitin synthesis. Merging insecticidal BPUs with photoswitchable azobenzene generated photoresponsive chitin synthesisinhibitors. A prepared azobenzene-benzoylphenylurea can be activated upon irradiation with UV light, and shows 6-fold and 2-fold activity difference to armyworm (Mythimna separata) and German cockroach
Tuning of Bistability, Thermal Stability of the Metastable States, and Application Prospects in the
<i>C</i>
<sub>3</sub>
‐Symmetric Designs of Multiple Azo(hetero)arenes Systems
extensive spectroscopic and computational studies, we envisaged the factors controlling near‐quantitative photoisomerization in both the directions (bistability) and the thermal stability of the metastablestates. Furthermore, we also evaluated the impact of designs in obtaining reversible photo‐responsive sol‐gel phase transitions, solvatochromism, photo‐ and thermochromism.
Connectivity matters – ultrafast isomerization dynamics of bisazobenzene photoswitches
作者:Chavdar Slavov、Chong Yang、Luca Schweighauser、Chokri Boumrifak、Andreas Dreuw、Hermann A. Wegner、Josef Wachtveitl
DOI:10.1039/c6cp00603e
日期:——
degree of π conjugation extending over the two azobenzene units was observed for p-bisazobenzene, which results in strong planarity of the molecule, reduced excited state lifetime and relatively low isomerization quantum yield. Multiphotochromic systems bridge the gap between molecular photoswitches and macroscopic function and thus, understanding the properties of bisazobenzenes opens the way to the design