Thermophoretic migration of vesicles depends on mean temperature and head group chemistry

Nature Communications
Emma L TalbotPietro Cicuta

Abstract

A number of colloidal systems, including polymers, proteins, micelles and hard spheres, have been studied in thermal gradients to observe and characterize their driven motion. Here we show experimentally the thermophoretic behaviour of unilamellar lipid vesicles, finding that mobility depends on the mean local temperature of the suspension and on the structure of the exposed polar lipid head groups. By tuning the temperature, vesicles can be directed towards hot or cold, forming a highly concentrated region. Binary mixtures of vesicles composed of different lipids can be segregated using thermophoresis, according to their head group. Our results demonstrate that thermophoresis enables robust and chemically specific directed motion of liposomes, which can be exploited in driven processes.

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Citations

Sep 12, 2017·Chemical Communications : Chem Comm·Seiichi UchiyamaNoriko Inada
Jan 27, 2019·Soft Matter·Emma L TalbotPietro Cicuta
Dec 7, 2019·Physical Review Letters·Rodrigo de Miguel, J Miguel Rubí
Dec 9, 2020·Entropy·Namkyu Lee, Simone Wiegand
Mar 19, 2021·ACS Nano·Shaofeng LiuHong-Bo Sun
Mar 14, 2019·Bioconjugate Chemistry·Will T KaufholdLorenzo Di Michele
Oct 22, 2019·ACS Nano·Abhijeet ShindeZhengdong Cheng
Oct 24, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Eric H HillYuebing Zheng
Feb 16, 2019·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Xiaolei PengYuebing Zheng
Jul 1, 2020·The Journal of Physical Chemistry. B·Semen N Semenov, Martin E Schimpf
May 9, 2019·The Journal of Physical Chemistry Letters·Himadri S SamantaD Thirumalai

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Methods Mentioned

BETA
electrophoresis
fluorescence imaging

Software Mentioned

MATLAB

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