High color stability and reversible thermochromism of polydiacetylene/zinc oxide nanocomposite in various organic solvents and polymer matrices

Colorimetric detection of influenza A (H1N1) virus by a peptide-functionalized polydiacetylene (PEP-PDA) nanosensor

“…Therefore, the HOMO-LUMON energy gap of perturbed PDA was widen upon increasing temperature, leading to the color transition from blue to red. [51][52][53] The PDA nanosensors also exhibited a color transition from blue to red with increasing pH (Fig. 3(b)).…”

“…3). [49][50][51][52][53] As the temperature increased, the dynamics of all segments within the PDA nanosensors increased, resulting in a shi in the absorption spectrum to a high-energy region and a change in the color transition from blue to red due to conformational change. As shown in Fig.…”

Multicolor Reversible Thermochromic Properties of Gallic Acid-Cored Polydiacetylenes Appended with Poly(alkyl aryl ether) Dendrons

“…Reversible blue‐to‐red color transitions are observed commonly in polydiactylenes. Metal nanoparticles containing polydiacetylene component in a polymer matrix are known to exhibit such a color transition up to 200 °C . Further, yellow or orange color transitions are also known up to ≈ 200 °C .…”

“…Also a micromolar solution of the diacetylene‐functionalized dendrimer in chloroform showed blue color initially, which, upon continued irradiation, changed to a deep purple color solution . On the other hand, the most known multicolor higher temperature thermochromism are up to 145 to 200 °C on polydiacetylenes that require their nanocomposite formation with silica, zinc oxide, and up to 200 °C wherein polydiacetylene tethered with peptide amphiphilic segments . With the anticipation that introduction of a dendron moiety as a head group of an alkyl diacetylene molecule would offer a spatio‐temporal control of the corresponding polymer chain, we designed dendron‐appended alkyl diacetylene derivatives and studied their temperature‐induced chromoisomerism properties.…”

Electrochromic carbon nanotube polydiacetylene and zinc oxide hybrids

“…We noticed that even though highly loaded CNT-ZnO-PDA exhibited the expected blue to red absorbance changes, the contrast of the colored states reduced with ZnO concentration. Moreover, 5% by volume loading of ZnO was considered more than sufficient to influence the chromatic properties of PDA in the previous reports [126][127][128][129][130]. Hence, all experiments in the following sections were carried out on the hybrid with 5 % ZnO loading.…”