한빛사 논문
Prabhu Dhasaiyan1, Tanwistha Ghosh1, Hong-Guen Lee2, Yeonsang Lee2, Ilha Hwang1,*, Rahul Dev Mukhopadhyay1,6,*, Kyeng Min Park3, Seungwon Shin4, In Seok Kang5 & Kimoon Kim1,2,*
1Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang 37673, Republic of Korea. 2Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea. 3Department of Biochemistry, Daegu Catholic University School of Medicine, Daegu 42472, Republic of Korea. 4Department of Mechanical and System Design Engineering, Hongik University, Seoul 04066, Republic of Korea. 5Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea. 6Present address: Department of Chemistry, Ramananda College, Bankura University, Bishnupur 722122 West Bengal, India.
*Corresponding author.
Abstract
Spatiotemporal control of chemical cascade reactions within compartmentalized domains is one of the difficult challenges to achieve. To implement such control, scientists have been working on the development of various artificial compartmentalized systems such as liposomes, vesicles, polymersomes, etc. Although a considerable amount of progress has been made in this direction, one still needs to develop alternative strategies for controlling cascade reaction networks within spatiotemporally controlled domains in a solution, which remains a non-trivial issue. Herein, we present the utilization of audible sound induced liquid vibrations for the generation of transient domains in an aqueous medium, which can be used for the control of cascade chemical reactions in a spatiotemporal fashion. This approach gives us access to highly reproducible spatiotemporal chemical gradients and patterns, in situ growth and aggregation of gold nanoparticles at predetermined locations or domains formed in a solution. Our strategy also gives us access to nanoparticle patterned hydrogels and their applications for region specific cell growth.
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