Stimuli-responsive organogels based on a gelator of hydrazide and azobenzene units connected via a flexible central spacer

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• 作者：Binglian Bai^a ; ^b ; Mingang Zhang^a ; Jue Wei^a ; ^{weijue@jlu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Huiyu Yan^a ; Haitao Wang^b ; Yuqing Wu^c ; Min Li^b ; ^{minli@mail.jlu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Organogels ; Hydrazide derivatives ; Azobenzene ; Anion response ; Photoisomerization ; Photo-stationary
• 刊名：Tetrahedron
• 出版年：2016
• 出版时间：1 September 2016
• 年：2016
• 卷：72
• 期：35
• 页码：5363-5368
• 全文大小：1404 K

文摘

An organogelator named 1-[4-(4′-dodecyloxyphenylazo)phenoxy]-5- [(N-(4-nitrobenzoyl) -N′-(benzoyl-4′-oxy)hydrazine)] pentane (EN) formed stable organogel in THF. SEM image revealed that the xerogels consisted of clumped spheroids, within which molecules self-assembled to a layered structure. Both intermolecular hydrogen bonding and π–π stacking interactions were confirmed to be responsible for the self-assembly processes and the gel formation. In addition, organogel of EN exhibited multiple stimuli-responsive behaviors upon exposure to stimuli such as temperature, light, and anion. The effect of flexible central spacer on the trans–cis photoisomerization of the azobenzene moiety was demonstrated.