Role of Zn2+ ion on the formation of reversible thermochromic polydiacetylene/zinc oxide nanocomposites

Traiphol, Nisanart; Chanakul, Amornsak; Kamphan, Anothai; Traiphol, Rakchart

doi:10.1016/j.tsf.2016.12.037

Cited by 48 publications

(38 citation statements)

References 42 publications

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“…This remarkable thermochromism was attributed to the hierarchically assembled structure promoted by the multiple hydrogen bonds among the peptide segments. As alternatives for obtaining reversible thermochromism from a molecular level, intercalation with polymers, − organic amines, , layered double hydroxide nanosheets, and metal ions − to form layered nanocomposites or co-assembly with small molecule melamine was successfully employed.…”

Section: Linear Diacetylenes: a Single Polar Headgroup And A Hydropho...mentioning

confidence: 99%

“…The color transition behavior of PDAs upon various stimuli could be altered by the incorporation of inorganic metallic materials, for example, zinc oxide (ZnO). − , The strong hydrogen bonding and ionic interaction between PDAs and ZnO is responsible for the alteration. Amornsak et al incorporated three diacetylene monomers, TCDA, PCDA, and 5,7-hexadecadiynoic acid (HDDA), into ZnO nanoparticles and investigated the color transition behavior of the PDA/ZnO nanocomposites upon exposure to pH changes .…”

Section: Linear Diacetylenes: a Single Polar Headgroup And A Hydropho...mentioning

confidence: 99%

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Recent Developments in Polydiacetylene-Based Sensors

2019

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Conjugated polymers are intriguing materials that have potential practical applications in diverse interdisciplinary subjects. Among them, polydiacetylenes (PDAs) have been extensively studied due to their interesting structural, spectral, and optical features. In particular, the unique colorimetric and fluorescent transition of PDAs in response to different external stimuli makes them a novel class of sensing materials, and numerous applications of PDAs as bio-or chemosensors have been explored in the past few decades. In this review, we summarize the latest developments with regard to the applications of PDAs as a class of sensing materials presented in the literature since 2014. This review is sorted into categories based on the structural differences of diacetylene monomers, from which PDAs are generated. In addition, different forms of PDAs and various methods for improving the sensing performance of PDAs are also emphasized.

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Section: Linear Diacetylenes: a Single Polar Headgroup And A Hydropho...mentioning

confidence: 99%

Section: Linear Diacetylenes: a Single Polar Headgroup And A Hydropho...mentioning

confidence: 99%

Recent Developments in Polydiacetylene-Based Sensors

2019

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“…PDA–Zn interactions have been investigated previously using FTIR, Raman, and UV–vis spectroscopy. − In these studies, Zn ions were found to have directed interactions and to form coordination complexes with the films. We observed that Zn ions had a striking effect on the polymerization kinetics and film morphology due to strong bridging complexes.…”

Section: Resultsmentioning

confidence: 99%

“…Upcher et al and Lifshitz et al examined the effects of Ba, Cd, Cu, Zn, and Pb cations on the morphology, structure, and blue to red transition of PDA films. Zinc cations in particular demonstrated strong control over the behavior of PDAs through bridging interactions between adjacent monomers and can enable chromatic reversibility. − The morphology and domains of PDA films were investigated with polarized light microscopy early on by Tieke and Weiss and Day and Lando . The formation of both mosaic block-like and spherulitic domains was observed.…”

Section: Introductionmentioning

confidence: 99%

Characterizing and Tuning the Properties of Polydiacetylene Films for Sensing Applications

et al. 2021

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Self-assembled, polymerized diacetylene (DA) nanostructures and two-dimensional films have been studied over the past two decades for sensor applications because of their straightforward visual readout. DA monomers, when exposed to UV light, polymerize to produce a visibly blue polymer. Blue phase polydiacetylenes (PDAs) when exposed to an external stimuli, such as temperature or UV light, undergo a chromatic phase transition to a fluorescent, visibly red phase. The tunability of the monomer to blue to red chromatic phase transitions by choice of diacetylene monomer in the presence of metal cations is systematically and comprehensively investigated to determine their effects on the properties of PDA Langmuir films. The polymerization kinetics and domain morphology of the PDA films were characterized using polarized fluorescent microscopy, UV−vis−fluorescent spectroscopy, and Fourier transform infrared spectroscopy (FTIR). Increasing the monomer alkyl tail length was found to strongly increase the UV dose necessary to produce optimally blue films and fully red films. A decrease in the polymer domain size was also correlated with longer-tailed DA molecules. Metal cations have a diverse effect on the film behavior. Alkaline-earth metals such as Mg, Ca, and Ba have a negligible effect on the phase transition kinetics but can be used to tune PDA polymer domain sizes. The Ni and Fe cations increase the UV dose necessary to produce red phase PDA films and significantly decrease the polymer domain sizes. The Zn, Cd, and Cu ions exhibit strong directed interactions with the PDA carboxylic acid headgroups, resulting in quenched fluorescence and a unique film morphology. FTIR analysis provides insight into the metal−PDA binding mechanisms and demonstrates that the coordination between the PDA film headgroups and the metal cations can be correlated with changes in the film morphology and kinetics. The findings from these studies will have broad utility for tuning PDA-based sensors for different applications and sensitivity ranges.

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“…PDA can be prepared via 1,4-addition of highly organized assemblies of diacetylene monomers, normally initiated by UV light irradiation. 29,30 PDA possesses color transition, typically from blue to red, upon the exposure to various external stimuli such as heat, 31–42 acids and bases, 40,43–46 chemicals 47–56 and biomolecules. 57–66 The perturbation by these stimuli generally weakens segmental interactions within the PDA assemblies.…”

Section: Introductionmentioning

confidence: 99%

Utilization of chromic polydiacetylene assemblies as a platform to probe specific binding between drug and RNA

et al. 2017

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Recognition of nucleic acids remains an important endeavor in biology. Nucleic acids adopt shapes ranging from A-form (RNA and GC rich DNA) to B-form (AT rich DNA). We show, in this contribution, shape-specific recognition of A-U rich RNA duplex by a neomycin (Neo)-polydiacetylene (PDA) complex. PDA assemblies are fabricated by using a well-known diacetylene (DA) monomer, 10,12-pentacosadiynoic acid (PCDA). The response of poly(PCDA) assemblies is generated by mixing with a modified neomycin-PCDA monomer (Neo-PCDA). The functionalization by neomycin moiety provides specific binding with homopolyribonucleotide poly (rA) - poly (rU) stimulus. Various types of alcohols are utilized as additives to enhance the sensitivity of poly(PCDA)/Neo-PCDA assemblies. A change of absorption spectra is clearly observed when a relatively low concentration of poly (rA)-poly (rU) is added into the system. Furthermore, poly(PCDA)/Neo-PCDA shows a clear specificity for poly (rA)-poly (rU) over the corresponding DNA duplex. The variation of linker between neomycin moiety and conjugated PDA backbone is found to significantly affect its sensitivity. We also investigate other parameters including the concentration of Neo-PCDA and the DA monomer structure. Our results provide here preliminary data for an alternative approach to improve the sensitivity of PDA utilized in biosensing and diagnostic applications.

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Role of Zn2+ ion on the formation of reversible thermochromic polydiacetylene/zinc oxide nanocomposites

Cited by 48 publications

References 42 publications

Recent Developments in Polydiacetylene-Based Sensors

Recent Developments in Polydiacetylene-Based Sensors

Characterizing and Tuning the Properties of Polydiacetylene Films for Sensing Applications

Utilization of chromic polydiacetylene assemblies as a platform to probe specific binding between drug and RNA

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