TY - JOUR
T1 - Acid-responsive polydiacetylene-Na+ assemblies with unique red-to-blue color transition
AU - Saymung, Rungarune
AU - Potai, Ruttayapon
AU - Papadakis, Christine M.
AU - Traiphol, Nisanart
AU - Traiphol, Rakchart
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2024/3/15
Y1 - 2024/3/15
N2 - Polydiacetylenes (PDAs), conjugated and stimuli-responsive polymers, are of interest for colorimetric sensing technologies. Commercially available PDAs with carboxylic headgroup do not show any colorimetric response to acid. To achieve acid-responsive property, the headgroups of PDAs are often modified with some functional moieties, involving complicated synthetic processes. This contribution presents a facile approach to develop acid-responsive materials via co-assembly of PDA and excess sodium hydroxide (NaOH). After low-temperature incubation and photopolymerization, the mixtures of 10,12-tricosadiynoic acid (TCDA) and NaOH develop into red-phase poly (TCDA-Na+) assemblies. A unique red-to-blue color transition occurs when the poly (TCDA-Na+) assemblies are exposed to hydrogen chloride (HCl) acid both in aqueous solution and gas phase. Increasing the concentrations of NaOH and TCDA monomer during the self-assembly process affects the molecular organization and morphologies of the resultant poly (TCDA-Na+) assemblies, which in turn govern the sensitivity to acid. The results of this study offer a simple and inexpensive method for developing acid-responsive PDAs, extending their colorimetric sensing applications.
AB - Polydiacetylenes (PDAs), conjugated and stimuli-responsive polymers, are of interest for colorimetric sensing technologies. Commercially available PDAs with carboxylic headgroup do not show any colorimetric response to acid. To achieve acid-responsive property, the headgroups of PDAs are often modified with some functional moieties, involving complicated synthetic processes. This contribution presents a facile approach to develop acid-responsive materials via co-assembly of PDA and excess sodium hydroxide (NaOH). After low-temperature incubation and photopolymerization, the mixtures of 10,12-tricosadiynoic acid (TCDA) and NaOH develop into red-phase poly (TCDA-Na+) assemblies. A unique red-to-blue color transition occurs when the poly (TCDA-Na+) assemblies are exposed to hydrogen chloride (HCl) acid both in aqueous solution and gas phase. Increasing the concentrations of NaOH and TCDA monomer during the self-assembly process affects the molecular organization and morphologies of the resultant poly (TCDA-Na+) assemblies, which in turn govern the sensitivity to acid. The results of this study offer a simple and inexpensive method for developing acid-responsive PDAs, extending their colorimetric sensing applications.
KW - Acid sensor
KW - Polydiacetylene
KW - Red-to-blue transition
KW - Self-assembly
UR - http://www.scopus.com/inward/record.url?scp=85186962887&partnerID=8YFLogxK
U2 - 10.1016/j.heliyon.2024.e27574
DO - 10.1016/j.heliyon.2024.e27574
M3 - Article
AN - SCOPUS:85186962887
SN - 2405-8440
VL - 10
JO - Heliyon
JF - Heliyon
IS - 5
M1 - e27574
ER -