DataVXACS Materials LettersPaper
journal article·2022-08-01

Chemical Amplification of Subthreshold Base Triggers To Drive Sol–Gel Transitions in Polymers

Shuqi Lai, Gaurav Chaudhary, Zhelong Jiang, Randy H. Ewoldt, Paul V. Braun

ACS Materials Letters· Volume 4· Issue 8
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Source abstract

Abstract

Chemical amplification has been widely applied in applications ranging from stimuli sensing to advanced photoresists, but it is rarely utilized to drive productive mechanical property changes. Here, we demonstrate the use of a base amplifier to drive the gelation of a functional polymer solution, in response to a subthreshold base trigger through a mechanism whereby the trigger drives a dramatic increase in the base concentration driven by base amplification, resulting in complexation of Fe(III) and polymer-bound catechol groups and subsequent gelation of the polymer solution. The concomitant crystallization of dibenzofulvene, which is a byproduct of base amplification, led to significant stiffening of the resultant gel and an unexpected temperature-sensitive change of gel stiffness.
Source: openalex_inverted_index · Quality: baseline

Research context

Polymers

OpenAlex topics: Supramolecular Self-Assembly in Materials · Supramolecular Chemistry and Complexes · Lipid Membrane Structure and Behavior

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Department of Mechanical Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Funding

Basic Energy Sciences

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