Colour responsive smart polymers and biopolymers films through nanodispersion of organic chromophores and metal particles

Pucci, Andrea; Ruggeri, Giacomo; Bronco, Simona; Signori, Francesca; Donati, Filippo; Bernabò, Marco; Ciardelli, Francesco

doi:10.1016/j.porgcoat.2010.12.015

Cited by 9 publications

(6 citation statements)

References 15 publications

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“…In contrast to small AIE luminogens, macromolecules with AIE characteristics have been less investigated so far. Notably, AIE polymers have many advantages over low mass AIEgens, such as processability, easy functionalization, good thermal stability and possess structural complexity and phase ordering that can be easily modulated by external solicitations [53,91,92]. On this account, AIEgens can be also utilized as piezochromic fluorescent additives in commodity polymers.…”

Section: Aie and Mechanochromic Fluorescent Polymersmentioning

confidence: 99%

Mechanochromic Fluorescent Polymers with Aggregation-Induced Emission Features

Pucci

2019

Sensors

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Mechanochromic polymers are defined as materials that are able to detect a mechanical stress through an optical output. This feature has evoked a growing interest in the last decades, thanks to the progress of chromogenic molecules whose optical characteristics and chemical functionalities allow their effective insertion in many thermoplastic and thermoset matrices. Among the different types of fluorogenic probes able to detect mechanical solicitations, those with aggregation-induced emission (i.e., AIEgens) have attracted tremendous interest since their discovery in 2001. In the present review, the main principles behind the AIEgens working behavior are introduced along with the current state of knowledge concerning the design and preparation of the derived mechanochromic fluorescent polymers. Examples are provided concerning the most ingenious solution for the preparation of chromogenic materials, starting from different types of commodity plastics or synthetic polymers and combined with the latest AIE technology to provide the most sensitive response to mechanical stress.

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Section: Aie and Mechanochromic Fluorescent Polymersmentioning

confidence: 99%

Mechanochromic Fluorescent Polymers with Aggregation-Induced Emission Features

Pucci

2019

Sensors

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“…The optical response of dye‐doped thermoplastic polymer matrices was analysed in depth as a tool to control and to modulate the degree of dispersion of chromophores in the amorphous phase of polymers . Various parameters were taken into account: (1) nature of the dye; (2) nature of the continuous polymer matrix; and (3) type of dispersion route.…”

Section: Dyes Dispersed In Bio‐related Polymersmentioning

confidence: 99%

The unique optical behaviour of bio‐related materials with organic chromophores

Ciardelli

Bertoldo

Bronco

et al. 2012

Polymer International

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Molecularly designed materials based on macromolecules and organic dyes offer unique opportunities in connection with the possibility of preparing optically responsive 'smart' materials. Indeed macromolecules are able to transmit and amplify small signals reaching sites at interacting distance through the involvement of the whole chain. The corresponding materials can then acquire stimuli-responsive properties in relation to specific features connected to primary structure and conformation. As a first approach to benefit from the above features for preparing eco-compatible smartmaterials, bio-related polypeptides, polysaccharides and polyesters can be used as the macromolecular partner in combination with a selected dye following different interaction methodologies. Two distinct routes were used to prepare optically responsive products from the above bio-related polymers, respectively based either on the covalent bonding to the original macromolecules of photochromic molecular species, such as azobenzene and spiropyran, or on the morphology-modulated dispersion of highly conjugated dyes in the polymer bulk. Examples related to the two different routes have been investigated in our laboratory and are presented and discussed also with reference to selected recent cases from the literature

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“…Color changes on such nanoparticles could be observed because of their quick response to different stimuli, such as temperature, salts, pH, or biomolecules. 5,6 Liu et al (2010) have been developed a pH-responsive AuNPs capped with hyperbranched polyethyleneimine terminated with isobutyric amide groups. The AuNPs nanocomposites show a reversible color transition from clear red, clear purple and turbid red when exposed to different temperature, pH and NaCl concentration.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Hydrogel Nanocomposite Containing Gold Nanoparticles With Unique Swelling/Deswelling Properties

Wikantyasning¹,

Mutmainnah²,

Cholisoh³

et al. 2019

RJC

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Nanosensor based on color changes to environmental changes is developing very rapidly nowadays. The aim of this study was to prepare responsive-hydrogel incorporating gold nanoparticles (AuNPs) and cysteine. Gold nanoparticles were self-assembled with poly(acrylic acid) and cysteine, which were characterized by UV-Vis spectrophotometer, zeta potential was measured by particle size analyzer (PSA), and characteristic of particles was portrayed using TEM. The results showed that the size of the nanoparticles produced is 13.27±2.43 nm. It was proven that the change in color of the nano-produced particles was resulted from swelling and shrinking of the sensitive-hydrogel that changed the distance of the AuNPs triggered by different pH. This nanosensor was successfully embedded into a hydrogel and showed a unique swelling/deswelling properties as a response to pH changes.

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Colour responsive smart polymers and biopolymers films through nanodispersion of organic chromophores and metal particles

Cited by 9 publications

References 15 publications

Mechanochromic Fluorescent Polymers with Aggregation-Induced Emission Features

Mechanochromic Fluorescent Polymers with Aggregation-Induced Emission Features

The unique optical behaviour of bio‐related materials with organic chromophores

Preparation of Hydrogel Nanocomposite Containing Gold Nanoparticles With Unique Swelling/Deswelling Properties

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