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趋化胶体马达的力矩驱动定向运动
作者:小柯机器人 发布时间:2022/1/8 19:07:31

哈尔滨工业大学贺强团队报道了趋化胶体电机的力矩驱动定向运动。相关研究成果发表在2022年1月3日出版的《德国应用化学》。

研究人员报告了一个直接的实验观察,即扭矩驱动的葡萄糖燃料瓶状胶体马达主动重新定向到葡萄糖梯度,显示出正的趋化性。这些流线型瓶状胶体马达是通过水热合成和真空灌注相结合的方法制备的,可以通过葡萄糖燃料中的酶级联反应来驱动。它们的瓶状结构可用于识别它们的运动姿势,因此,在正向趋化过程中,动态葡萄糖梯度诱导的排列和方向依赖性运动可通过实验检测。

趋化机制是内部的酶促反应引起葡萄糖酸梯度和葡萄糖梯度,葡萄糖酸梯度和葡萄糖梯度分别在底部和开口处产生两个磷酸扭矩,从而不断地将其导向葡萄糖梯度。这种以葡萄糖为燃料的烧瓶状胶体马达类似于生物体的趋化能力,在响应特定化学信号的工程活性载体方面具有相当大的潜力。

附:英文原文

Title: Torque Driven Orientation Motion of Chemotactic Colloidal Motors

Author: Chang Zhou, Changyong Gao, Yingjie Wu, Tieyan Si, Mingcheng Yang, Qiang He

Issue&Volume: 2022-01-03

Abstract: We report a direct experimental observation of the torque-driven active reorientation of glucose-fueled flasklike colloidal motors to a glucose gradient exhibiting a positive chemotaxis. These streamlined flasklike colloidal motors are prepared by combining a hydrothermal synthesis and a vacuum infusion and can be propelled by enzymatic cascade reaction in the glucose fuel. Their flasklike architecture can be used to recognize their moving posture, and thus the dynamic glucose-gradient-induced alignment and orientation-dependent motility during positive chemotaxis can be examined experimentally. The chemotactic mechanism is that the enzymatic reactions inside lead to the glucose acid gradient and the glucose gradient which generate two phoretic torques at the bottom and the opening respectively, and thus continuously steer it to the glucose gradient. Such glucose-fueled flasklike colloidal motors resembling the chemotactic capability of living organisms hold considerable potential for engineering active delivery vehicles in response to specific chemical signals.

DOI: 10.1002/anie.202116013

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202116013

期刊信息

Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx