Yan, Qiwen; Mao, Lina; Feng, Bang; Zhang, Lidong; Wu, Yiqian; Huang, Wei published an article in 2021. The article was titled 《Reversible Patterning Cross-Linked, Humidity-Responsive Polymer Films with Programmatically and Accurately Controlled Deformation》, and you may find the article in ACS Applied Materials & Interfaces.Safety of 1,6-Dibromohexane The information in the text is summarized as follows:
A series of novel humidity-responsive and photosensitive polymer films (PCA-PAA-PEG) are prepared These films can be patterning crosslinked by the photodimerization of coumarin pendant groups. The humidity-induced deformation can be well controlled by the pattern because of the different modulus and hydrophilicity between crosslinked and un-crosslinked segments. In addition, the pattern can be erased and the deformation direction can be changed programmatically by the de-crosslinking-re-crosslinking approach due to the reversible photodimerization of coumarin groups. The crosslinking degree also affects the humidity responsiveness of the film. The deformation of the gradient patterning crosslinked film can be more accurately controlled. Moreover, the length and width ratio (L/Ws/Wh) of the un-crosslinked segment to the crosslinked segment affects the deformation of the films as well. When L/Ws/Wh is 5/2/1 or 5/3/1, the deformation is controllable, and when L/Ws/Wh is 5/1/1 or 5/4/1, the deformation is random at the initial stage, but the whole film will bend along the short axis in the end. In addition to this study using 1,6-Dibromohexane, there are many other studies that have used 1,6-Dibromohexane(cas: 629-03-8Safety of 1,6-Dibromohexane) was used in this study.
1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of pyrrolo-tetrathiafulvalene molecular bridge (6PTTF6) to study redox switching behavior of single molecules; synthesis of water-soluble thermoresponsive polylactides.Safety of 1,6-Dibromohexane
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary