Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(<em>N</em>-isopropylacrylamide) Microgels

Otto L. J. Virtanen; Ashvini Purohit; Monia Brugnoni; Dominik W&#246;ll; Walter Richtering

doi:10.3791/54419

Síntesis controlada y de seguimiento de la fluorescencia de muy uniforme de poli ( N -is...

JoVE Journal
Chemistry

A subscription to JoVE is required to view this content. Sign in or start your free trial.

JoVE Journal Chemistry

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

Síntesis controlada y de seguimiento de la fluorescencia de muy uniforme de poli ( N -isopropylacrylamide) microgeles

Full Text

10,818 Views

11:34 min

September 8, 2016

DOI: 10.3791/54419-v

Otto L. J. Virtanen¹, Ashvini Purohit¹, Monia Brugnoni¹, Dominik Wöll¹, Walter Richtering¹

¹Institute of Physical Chemistry,RWTH Aachen University

Please note that some of the translations on this page are AI generated. Click here for the English version.

Overview

This study investigates the dynamic behavior of soft colloidal particles, specifically poly(N-isopropylacrylamide) microgels, in dispersions near glass transition. The research utilizes wide-field fluorescence microscopy to track single microgels, providing insights into their motion and diffusion characteristics.

Key Study Components

Area of Science

Neuroscience
Polymer Chemistry
Colloidal Science

Background

Microgels can adapt their size, shape, and mobility based on environmental conditions.
Understanding the behavior of soft microgels is crucial for various applications.
Wide-field fluorescence microscopy allows for precise localization and tracking of microgels.
Previous studies have focused primarily on rigid colloidal particles.

Purpose of Study

To explore the dynamics of single microgels in dense systems.
To investigate the interaction of microgels in varying particle densities.
To utilize non-stirred precipitation polymerization for synthesizing microgels with controlled sizes.

Methods Used

Non-stirred precipitation polymerization for microgel synthesis.
Light scattering characterization of microgels.
Single particle fluorescence tracking in wide-field microscopy.
Analysis of diffusion behavior in microgel dispersions.

Main Results

Demonstrated a rapid and reproducible method for synthesizing microgels.
Characterized microgels using light scattering techniques.
Tracked the motion of single microgels with high accuracy.
Provided insights into the diffusion dynamics of microgels in dense environments.

Conclusions

The study enhances understanding of soft colloidal particle behavior.
Findings may inform future research on microgel applications.
Wide-field fluorescence microscopy proves effective for studying microgel dynamics.

Frequently Asked Questions

What are microgels?

Microgels are soft colloidal particles that can change their size and shape in response to environmental conditions.

How does wide-field fluorescence microscopy work?

It allows for the localization and tracking of single particles with high precision using fluorescence signals.

What is non-stirred precipitation polymerization?

A method for synthesizing microgels that enables control over their size and properties without stirring.

Why is studying microgels important?

Understanding microgels can lead to advancements in various fields, including drug delivery and material science.

What were the main findings of this study?

The study successfully synthesized microgels and tracked their dynamics, providing insights into their behavior in dense systems.

Can microgels be used in biomedical applications?

Yes, microgels have potential applications in drug delivery, tissue engineering, and other biomedical fields.

Polimerización por precipitación no agitada proporciona un enfoque de prototipado rápido, reproducible para la síntesis de los estímulos sensibles al poli (N -isopropylacrylamide) microgeles de estrecha distribución de tamaños. En esta síntesis protocolo, la caracterización de dispersión de luz y fluorescencia de seguimiento de partículas individuales de estos microgeles en una configuración de la microscopía de campo amplio se demuestran.

El objetivo general de este trabajo es investigar el comportamiento dinámico y la interacción de partículas coloidales blandas en dispersiones de varias densidades de partículas en las proximidades de la transición vítrea. Los microgeles son objetos blandos que pueden adaptar su tamaño, forma y movilidad según su entorno. A diferencia de las partículas coloidales rígidas, hay muchas preguntas abiertas sobre el comportamiento de los microgeles blandos.

La principal ventaja de la microscopía de fluorescencia de campo amplio es la posibilidad de localizar microgeles individuales con alta precisión, seguir directamente su movimiento en C2 y analizar las cantidades de difusión. Para investigar la dinámica de los microgeles individuales en sistemas densos, solo un pequeño número de microgeles debe marcarse con fluorescencia. La polimerización por precipitación sin agitación permite la síntesis paralela de microgel con condiciones de reacción variables para que coincida convenientemente con el tamaño de los microgeles marcados y no marcados.

View the full transcript and gain access to thousands of scientific videos

Explore More Videos

Química Número 115 poli (N-isopropilacrilamida) polimerización por precipitación el etiquetado de fluorescencia microgeles dispersión de luz rastreo de partículas microscopía de fluorescencia