Polydiacetylene/triblock copolymer nanoblend applied as a sensor for micellar casein: A thermodynamic approach

Souza, Luana Cypriano de; Rezende, Jaqueline de Paula; Pires, Ana Clarissa dos Santos; Silva, Luís Henrique Mendes da; Silva, Maria do Carmo Hespanhol da; Castrillon, Elkin Dario Castellon; Andrade, Nélio José de

doi:10.1016/j.foodchem.2015.11.071

Cited by 10 publications

(9 citation statements)

References 27 publications

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“…The polymerized vesicles formed in this way are generally blue and change to red when a stimulus is applied . The stimuli for example, thermal, Pb 2+ , hydrocarbon, casein, mechanical force, warfare gas, Zn 2+ , salmonella, water, virus, organic acid, albumin, bacteria, and prostate cancer have been reported. The blue colored polymerized PDA vesicle state was used as a sensor system in all of these sensor system.…”

Section: Introductionmentioning

confidence: 99%

Chromatic detection of glucose using polymerization of diacetylene vesicle

Kim

Shin

Hwang

et al. 2018

J of Applied Polymer Sci

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A polydiacetylene vesicle was used to fabricate glucose sensor, allowing feasible colorimetric detection. The vesicle was formed by sonication of 10,12‐pentacosadiynoic acid (PCDA). H2O2 formed by the reaction between glucose and glucose oxidase functioned as the initiator for the polymerization of PCDA in the presence of horseradish peroxidase. The solution turned blue after the polymerization of PCDA vesicle. Thus, the glucose concentration could be detected to the concentration level that turns the solution to blue. The ultraviolet absorbance of glucose solution was proportional to glucose concentration. The results of this study indicate that glucose concentration upto 1 mM can be detected by change in blue color by eyes. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46394.

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Section: Introductionmentioning

confidence: 99%

Chromatic detection of glucose using polymerization of diacetylene vesicle

Kim

Shin

Hwang

et al. 2018

J of Applied Polymer Sci

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“…As we demonstrated, the enthalpy changes associated with the PDA colorimetric transition are a result of conformational changes associated with the rotation of the functional group around the carbon-carbon bond present in polydiacetylene chains [12,22].…”

Section: Introductionmentioning

confidence: 80%

Polydiacetylene Vesicles for Detecting Surfactants: Understanding the Driven Forces of Polydiacetylene-Surfactant Interaction

Pires¹,

Soares²,

Silva³

et al. 2016

J Food Chem Nanotechnol

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Surfactants are widely used by food industry thus its discharge is an environmental concern; and development of Polydiacetylene (PDA)-based sensors may detect these molecules. However, to improve the sensor efficiency is necessary to understand interactions between PDA vesicles and surfactants. In this work, we purpose to investigate the interactions between surfactants and PDA vesicles as well as between surfactants and PDA + cholesterol (CHO) + sphingomyelin (SPH) vesicles dispersed in water. The addition of a cationic surfactant, hexadecyltrimethylammonium bromide (CTAB), induced a blue-tored spectrophotometric transition in both structures; however, the addition of the anionic compounds, sodium dodecyl sulfate (NaDS) and lithium dodecyl sulfate (LiDS) did not change the vesicle color. The addition of the cationic surfactant increased the hydrodynamic radium (R h ) of the PDA vesicles (from 39.82 ± 3 nm to 96.85 ± 3 nm) and the PDA/CHO/SHP vesicles (from 160.89 ± 3 nm to 219.84 ± 3 nm). The presence of NaDS and LiDS also increased the size of the PDA vesicles (to 43.50 ± 3 nm and 43.75 ± 3 nm, respectively) and the PDA/ CHO/SPH vesicles (to 201.91 ± 3 nm and 210.24 ± 3 nm, respectively). The interaction energies between the cationic surfactant and PDA and PDA/CHO/ SPH were different; however, both were entropically driven. PDA vesicles show potential to be used as sensors for cationic surfactants detection.

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“…For this purpose, polydiacetylenes (PDA) have been widely investigated thanks to their unique optical properties and rapid response to external stimuli, such as temperature , and pH , as well as interactions with surfactants, , organic solvents, , proteins, , and some viruses and bacteria. , These features make PDA a promising candidate for sensing devices.…”

Section: Introductionmentioning

confidence: 99%

Functionalized Polydiacetylene Vesicles for Lactate Sensing: An Interaction Study

Camilloto

Otoni

Almeida

et al. 2021

ACS Food Sci. Technol.

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Novel phospholipid/polydiacetylene vesicles are reported herein, and their optimized sensing performance and the effects of lactate counterions and pH are elucidated. Vesicles comprising 10,12-pentacosadyinoic acid (PCDA), PCDA/cholesterol/ sphingomyelin (PCDA/CHO/SPH), PCDA/1,2-dimyristoyl-sn-glycero-3-phosphocholine (PCDA/DMPC), and PCDA/1,2dimyristoyl-sn-glycero-3-phosphoglycerol (PCDA/DMPG) were synthesized, and their diameters and colorimetric responses induced by sodium and calcium lactates were assessed. The vesicles were characterized at as-synthesized pH as well as at reduced (pH < pK a ) and increased (pH > pK a ) proton activities. This contribution demonstrates that the presence of lactate caused the colorimetric transition in PDA vesicles and that the interaction between these components depended upon vesicle composition, medium pH, and lactate counterion. Variations in vesicle diameter arising from calcium or sodium lactate concentrations are probably related to the disruption of vesicle surfaces, which does not change the internal molecular packing. Therefore, vesicle growth was not always responsible for the colorimetric transitions, which in fact were assigned to conformational changes of the PDA molecules.

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Polydiacetylene/triblock copolymer nanoblend applied as a sensor for micellar casein: A thermodynamic approach

Cited by 10 publications

References 27 publications

Chromatic detection of glucose using polymerization of diacetylene vesicle

Chromatic detection of glucose using polymerization of diacetylene vesicle

Polydiacetylene Vesicles for Detecting Surfactants: Understanding the Driven Forces of Polydiacetylene-Surfactant Interaction

Functionalized Polydiacetylene Vesicles for Lactate Sensing: An Interaction Study

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