Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Sep 6;10(9):994. doi: 10.3390/polym10090994

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

The optical (a) and fluorescent images (b) of the original poly(AAm-co-MA/Rh) hydrogels with a solid content of 70 wt%. The (c) optical and (d) fluorescent images of the hydrogels after swelling in water solutions with different pH (The pH values were noted in the images). The corresponding (e) optical and fluorescent (f) images of the hydrogels after further swelling in the alkaline solutions with a pH of 13.0. Emission spectra of the hydrogels (g) after swelling in water solutions with different pH values from 1.0 to 6.8 and (h) after further swelling in the alkaline solutions with a pH of 13.0.