pH-Responsive Polyketone/5,10,15,20-Tetrakis-(Sulfonatophenyl)Porphyrin Supramolecular Submicron Colloidal Structures.
Paal–Knorr reaction
TPPS
pH responsiveness
polyketone
polymeric surfactant
supramolecular nanostructures
Journal
Polymers
ISSN: 2073-4360
Titre abrégé: Polymers (Basel)
Pays: Switzerland
ID NLM: 101545357
Informations de publication
Date de publication:
03 Sep 2020
03 Sep 2020
Historique:
received:
30
07
2020
revised:
31
08
2020
accepted:
02
09
2020
entrez:
9
9
2020
pubmed:
10
9
2020
medline:
10
9
2020
Statut:
epublish
Résumé
In this work, we prepared color-changing colloids by using the electrostatic self-assembly approach. The supramolecular structures are composed of a pH-responsive polymeric surfactant and the water-soluble porphyrin 5,10,15,20-tetrakis-(sulfonatophenyl)porphyrin (TPPS). The pH-responsive surfactant polymer was achieved by the chemical modification of an alternating aliphatic polyketone (PK) via the Paal-Knorr reaction with N-(2-hydroxyethyl)ethylenediamine (HEDA). The resulting polymer/dye supramolecular systems form colloids at the submicron level displaying negative zeta potential at neutral and basic pH, and, at acidic pH, flocculation is observed. Remarkably, the colloids showed a gradual color change from green to pinky-red due to the protonation/deprotonation process of TPPS from pH 2 to pH 12, revealing different aggregation behavior.
Identifiants
pubmed: 32899443
pii: polym12092017
doi: 10.3390/polym12092017
pmc: PMC7563153
pii:
doi:
Types de publication
Journal Article
Langues
eng
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