Bioinspired Color Changing Molecular Sensor toward Early Fire Detection Based on Transformation of Phthalonitrile to Phthalocyanine

Fu, Teng; Zhao, Xi; Chen, Lin; Wu, Wan‐Shou; Zhao, Qing; Wang, Xiuli; Guo, De‐Ming; Wang, Yu‐Zhong

doi:10.1002/adfm.201806586

Cited by 96 publications

(38 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To further characterize the flame retardant properties of BA-MA and its effect on the combustion behavior of PS, PS samples with BA-MA additions of 1 wt% and 2 wt% were tested by cone calorimetry and compared with pure PS [ 43 , 44 , 45 , 46 ]. Relevant data are shown in Figure 7 and Figure 8 , and Table 3 .…”

Section: Resultsmentioning

confidence: 99%

A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene

Yuan

Zhao

et al. 2022

Polymers

View full text Add to dashboard Cite

Polymers are widely used in our daily life; however, most of them are highly flammable. Once modified with flame retardants (FRs), polymers always have deteriorative properties in mechanical strength aspects. As a countermeasure, a novel unified phosphorus and nitrogen-containing organic nano-layered flame retardant (BA-MA) was synthesized by the assembly of biphenyl-4,4′-diphosphonic acid (BA) and melamine (MA), which was used as an additive flame retardant for polystyrene (PS) resin. The chemical structure and morphology of BA-MA were characterized, and a possible growth mechanism of the nanolayered structure was presented in detail. The resulting BA-MA with a thickness of about 60 nm can be uniformly dispersed in the PS resin, thus maintaining the mechanical properties of the material. Remarkably, under only 1 wt% loading of BA-MA, the flammability of PS can be largely reduced with a 68% reduction in the peak heat release rate. Additionally, the smoke release was also significantly inhibited. The research on flame retardant mechanisms shows that BA-MA mainly produces incombustible gas to dilute the concentration of combustibles and promote the formation of aromatic carbon layers to isolate oxygen transmission and heat transfer.

show abstract

Section: Resultsmentioning

confidence: 99%

A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene

Yuan

Zhao

et al. 2022

Polymers

View full text Add to dashboard Cite

show abstract

“…Naturally, plant chlorophyll gives leaves their green color during spring but catabolizes into red or brown color under extreme summer and winter temperatures. Recently, a precursor molecular sensor (PMS) inspired by chlorophyll metabolism exhibited a color change signal at 180°C [ 105 ]. Incorporating the PMS into an early flame warning system resulted in a rapid colorful alarm at 275°C within 20 seconds.…”

Section: Sensors Inspired By Butterfly Wing Architecturesmentioning

confidence: 99%

Butterfly wing architectures inspire sensor and energy applications

Osotsi¹,

Zhang²,

Imran³

et al. 2020

National Science Review

View full text Add to dashboard Cite

Natural biological systems are constantly developing efficient mechanisms to counter adverse effects of increasing human population and depleting energy resources. Their intelligent mechanisms are characterized by the ability to detect changes in the environment, store and evaluate information and respond to external stimuli. Bio-inspired replication into manmade functional materials guarantees enhancement of characteristics and performance. Specifically, butterfly architectures have inspired the fabrication of sensor and energy materials by replicating their unique micro/nanostructures, light trapping mechanisms and selective responses to external stimuli. These bio-inspired sensor and energy materials have shown improved performance in harnessing renewable energy, environmental remediation and health monitoring. Therefore, this review highlights recent progress reported on the classification of butterfly wing scale architectures and explores several bio-inspired sensor and energy applications.

show abstract

“…Typically, pristine GO networks are electrically insulated due to oxygen-containing functional groups in their structure [17][18][19]. On encountering a flame, the reduction of oxygen groups in the insulating GO network can chang it into an electrically conductive rGO one [20][21][22], thus providing a rapid flame-detection response time (normally less than 10 s [11,14,[23][24][25][26][27]). On the other hand, GO-based fire-warning materials also offer an ideal fire early-warning signal that can be activated below the ignition temperatures of most flammable materials, e.g., 232 s at 200 • C and 35 s at 300 • C for 3 -mercaptopropyltrimethoxysilane modified-GO nanocomposite paper [13].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Graphene Oxide Nanoribbon-Based Nanocomposite Papers with Different Oxidation Degrees and Morphologies for Tunable Fire-Warning Response

Qiu

Zhou³

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

Smart fire-warning sensors based on graphene oxide (GO) nanomaterials, via monitoring their temperature-responsive resistance transition, have attracted considerable interest for several years. However, an important question remains as to whether or not different oxidation degrees of the GO network can produce different impacts on fire-warning responses. In this study, we synthesized three types of GO nanoribbons (GONRs) with different oxidation degrees and morphologies, and thus prepared flame retardant polyethylene glycol (PEG)/GONR/montmorillonite (MMT) nanocomposite papers via a facile, solvent free, and low-temperature evaporation-induced assembly approach. The results showed that the presence of the GONRs in the PEG/MMT promoted the formation of an interconnected nacre-like layered structure, and that appropriate oxidation of the GONRs provided better reinforcing efficiency and lower creep deformation. Furthermore, the different oxidation degrees of the GONRs produced a tunable flame-detection response, and an ideal fire-warning signal in pre-combustion (e.g., 3, 18, and 33 s at 300 °C for the three PEG/GONR/MMT nanocomposite papers), superior to the previous GONR-based fire-warning materials. Clearly, this work provides a novel strategy for the design and development of smart fire-warning sensors.

show abstract

Bioinspired Color Changing Molecular Sensor toward Early Fire Detection Based on Transformation of Phthalonitrile to Phthalocyanine

Cited by 96 publications

References 46 publications

A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene

A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene

Butterfly wing architectures inspire sensor and energy applications

Facile Fabrication of Graphene Oxide Nanoribbon-Based Nanocomposite Papers with Different Oxidation Degrees and Morphologies for Tunable Fire-Warning Response

Contact Info

Product

Resources

About