Architectural effect on self-assembly and biorecognition of randomly grafted linear and branched polymers at liquid crystal– water interfaces Ankita Kumar § , Ipsita Pani § , Mohammad Umer Lone, Aditi Aggarwal, Santanu Kumar Pal * and Raj Kumar Roy * Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, India Email: skpal@iisermohali.ac.in, raj@iisermohali.ac.in § - equal contribution Because of simple synthetic strategies, randomly functionalized amphiphilic polymers have gained much attention. Recent studies have demonstrated that such polymers can be reorganized into distinct nanostructures, such as spheres, cylinders, vesicles, etc., similar to amphiphilic block copolymers. Our study investigated the self-assembly of randomly functionalized hyperbranched polymers (HBP) and their linear analogs (LP) in solution and at the liquid crystal−water (LC−water) interfaces. Regardless of their architecture, the designed amphiphiles self-assembled into spherical nano-aggregates in solution and mediated the ordering transitions of LC molecules at the LC−water interface. However, the amount of amphiphiles required for LP was 10 times lower than that required for HBP amphiphiles to mediate the same ordering transition of LC molecules. Further, of the two compositionally similar amphiphiles (linear and branched), only the linear architecture responds to biorecognition events. The architectural effect can be attributed to both of these differences mentioned above.
References 1. Ankita Kumari, Ipsita Pani, Mohammad Umer Lone, Aditi Aggarwal, Santanu Kumar Pal,* and Raj Kumar Roy*, ACS Appl. Mater. Interfaces 2023, 15 , 31233−31242 2. Yongfeng Zhou, Wei Huang, Jinyao Liu, Xinyuan Zhu, and Deyue Yan Adv. Mater. 2010, 22 , 4567–4590. 3. Hiroki Eimura, Daniel S. Miller, Xiaoguang Wang, Nicholas L. Abbott, and Takashi KatoChem. Mater . 2016, 28 , 1170−1178.
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