Suitable candidates are
azobenzene polymers, stilbene polymers, and certain linear polymers.
Students Khadiga Mohammed and Juwayriya al Habsi presented their graduation project posters 'Synthesis of novel photochromic
azobenzene derivatives' and 'Synthesis of novel photochromic
azobenzene derivatives' respectively, in the field of organic chemistry.
Students Khadiga Mohamed and Juwayriya al-Habsi presented their graduation project posters 'Synthesis of novel photochromic
azobenzene derivatives' and 'Synthesis of novel photochromic
azobenzene derivatives' respectively in the field of organic chemistry, while student Elkhansa Elbashier presented her Undergraduate Research Experience Programme poster "Computational mechanistic insights into the palladium-catalysed alkylation of selected aldehyde-derived hydrazones" in the field of physical chemistry.
Poly[(acrylic acid)-co-(butyl acrylate)] crosslinked with 4,4'-bis(methacryloylamino)
azobenzene. Macromol Chem.
Pace et al., "Light-powered electrical switch based on cargo-lifting
azobenzene monolayers," Angewandte Chemie International Edition, vol.
Azobenzene as a functional group has been widely used to design materials with photoresponsive property [26-29].
Bortolus, "The cis [right arrow] trans photoisomerization of
azobenzene: an experimental re-examination," Journal of Photochemistry, vol.
The operations of these tweezers, however, require either the involvement of enzymes which may be subject to thermodynamic limitations, or rigid pH control of the system which suffers from tedious preparation processes, or the use of toxic
azobenzene moieties.
The presence of halogen substituents particularly at the para position of chalcone backbone has been reported with excellent biological activities such as antibacterial [26] and anti-inflammatory [27], while
azobenzene bearing aryl/alkyl and N=N reactive moieties have been extensively reported due to its excellent antibacterial [28, 29], antioxidant [30], anti-inflammatory [31], antifungal [32], and antitumor [33] properties.
The absorption band at 3,485 [cm.sup.-1] was associated with the stretching vibration of hydroxyl of carboxylic acid; the absorption band at 2,910-2,500 [cm.sup.-1] was associated with the stretching vibration of association hydroxyl of carboxylic acid; the absorption band at 1,690 [cm.sup.-1] was associated with the stretching vibration of carbonyl; the absorption band at 1,270-1,250 [cm.sup.-1] was associated with the stretching vibration of sulfonic group; and the absorption band at 1,131 [cm.sup.-1] was associated with the stretching vibration of
azobenzene groups; the absorption band at 1,238-1,150 [cm.sup.-1] was associated with the stretching vibration of ether linkage.
(63)
Azobenzene was used for the bridge linkage in the helical structure.