SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Haiyan Mao,Ling Lin,Zhipeng Ma,Chaoxia Wang
An acid and UV dual-responsive cellulose fabric was developed via coating with a polymeric dye based on waterborne polyurethane and azobenzene chromophore to provide additional smart characteristics for textiles. The incorporation of azobenzene chromophore into polyurethane chain through chemical bonding enhanced the thermal stability. The maximum absorption peak of the polymeric dye and its coated fabric shifted from 410 nm to 520 nm upon pH decreasing from 6 to 1, accompanying with pronounced color change from yellow to amaranth due to structural transition from diazo to hydrazone form. The acidichromic property of the polymeric dye also presents an outstanding repetition stability. The trans -isomers in the polymeric dye transformed into cis -isomers rapidly (1 s) in response to UV irradiation, while its recovery was much slower (6 h) in dark due to the large molecular and volume of polyurethane chains. Upon trans-cis isomerism, the coated fabric presented slight color change between yellow and orange after alternative UV irradiation and dark. The stimuli-responsive cellulose fabric with reversible acidichromic and photoisomeric properties can be a promising candidate for developing a wearable and flexible sensor to monitor environmental changes.
研究领域:
材料科学
·
纺织工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Jiru Jia,Weiwei Liu,Qi Xiao,Ya Yang,Jie Chen,Hanqi Li,Xingqiang Fang,Yali Li
Our study focuses on developing a novel wearable fabric with reversible acidichromic properties by dyeing it with self-colored hollow microparticles as polymeric dyes. To synthesize the pH-responsive chromophore , we introduced a self-synthesized 3-methyl-3-2,2′-dihydroxydiethylamine azobenzene (MDPD) to polyurethane microparticle shells. This prevented any dye leakage compared to conventional dye microcapsules. The self-colored microparticles exhibited an approximately spherical shape, with the particle size distribution ranging from 400 nm to 900 nm, peaking around 600 nm. By covalently bonding MDPD to the molecular chain of the polyurethane shell, we increased thermal stability and avoided dye leakage. We calculated the actual content of MDPD in the shell to be 3.84 %. To investigate the pH-responsive chromic mechanism of self-colored hollow microparticles, we characterized their color properties at various pH values. The polyester fabric dyed with pH-responsive self-colored microparticles showed a K/S value of up to 4.8. The dyed fabric exhibited a clear color change from yellow to rose red after decreasing the pH value, with a highly reversible mode, excellent color fastness, and aging resistance. Furthermore, we analyzed the combination mechanism of microparticles and polyester fabrics, highlighting the reversibility and large-area flexibility of pH-responsive microparticle dyed fabrics. The ability to accurately monitor pH levels in real-time using these fabrics opens new avenues for creating intelligent and responsive textile-based devices. As we continue our research and development, we aim to explore and maximize the potential of these fabrics, making them a valuable and innovative addition to the realm of wearable technologies.
研究领域:
材料科学
·
纺织工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Danhua Guo,Huijun Li,Zhouqing Xu,Yujie Nie
A smart fluorescent pyrene-based MOFs ( HPU-26 ) was synthesized by the solvothermal method, which possessed multi-stimuli-responsive properties and could detect water content in common organic solvents . The reversible multicolor fluorescent switching between yellowish green and cyan were observed under the stimulation of force, heating, and acid-base vapors. PXRD pattern, DSC curve, FI-IR spectra and the solid-state UV–vis absorption spectra were conducted to prove that the changes of π - conjugation induced the transformations between excimer and monomer formation under external stimulation, thus resulting in different fluorescent properties. In addition, HPU-26 could realize the detection of water content by remarkable change of fluorescent color from yellowish green to blue with increasing the water content in common organic solvents, which was attributed to the decomposition of crystal structure. The limit of detection (LOD) values of HPU-26 for detecting the water content in EtOH, DMA, Acetone and ACN were determined as 0.0260 %, 0.0578 %, 0.1978 %, and 0.5637 % (v/v), respectively. Furthermore, HPU-26 could be applied in advanced anti-counterfeiting and convenient visual detection of water content in common organic solvents by smartphone-based software.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2023
·
IF 4.5
Yutong Xiong,Weiren Zhong,Xuedan Zhang,Yuting Lin,Zhenguo Tang,Shouji Li,Xu-Min Cai
The petrochemical-based multi-stimuli responsive materials have been widely explored as advanced functional materials in the past several decades, but they inevitably face problems like complicated synthesis, non-renewability, and non-sustainability. On this basis, the bio-based materials used to construct multi-stimuli responsive due to the unique natural structures have come to the fore. In this work, three novel triphenylamine-based salicylideneanilines have been simply designed with aggregation-induced emission (AIE) properties. Among all, DAMB-TPAOH and DAMB-TPA possessing the natural structure of dehydroabietic acid from rosin are bioproduct-inspired AIE luminogens (BioAIEgens). Derived from the excited-state intramolecular proton transfer (ESIPT) and restriction of intramolecular motion (RIM) dual-mechanism caused by the hydroxyl group and rigidification of alicyclic moiety, respectively, the solid-state DAMB-TPAOH exhibits red-shifted (compared to DAMB-TPA ) and stronger (compared to BA-TPAOH ) emission, endowing this BioAIEgen with the best fluorescence behavior. Further, the introduction of the natural skeleton, propeller TPA, and imine group results in the high-contrast mechanochromic and acidichromic properties of DAMB-TPAOH . The multi-stimuli responsive properties endow DAMB-TPAOH with potential utilization in the manufacture of rewritable paper and multi-color ink. The current work contributes greatly to the development of BioAIEgens with both mechanochromism and acidichromism.
研究领域:
材料科学
·
有机化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2018
·Vol. 9
·期 1
·1-9
·
IF 12.353
Xi Guan,Sheng Lan,Du Jiahui,Zhang Jinyan,Li Minjie,Wang Hongze,Ma Yufei,Zhang Sean Xiao-An
The colour of water-jet rewritable paper (WJRP) is difficult to be expanded via single hydrochromic molecule, especially black. Here, inspired by the amazing phenomenon of bound-water in cells enabling various biological transformations via facilitating synergistic inter-/intra-molecular proton transfer, we present a simple strategy toward WJRP based on binary systems containing less-sensitive acidochromic dyes and mild proton donors (or developers). With such a binary system containing commercial black dye as the colouring agent, benzyl 4-hydroxybenzoate as the developer, and biomimetic bound-water as proton-transferring medium, we successfully achieve the long-awaited black WJRP. Printed images on such WJRP have excellent performances and long retaining time (>1 month). In addition, the robustness, durability and reversibility of WJRP could be increased distinctly by using polyethylene terephthalate as substrate. This strategy significantly expands hydrochromic colours to entire visible range in an eco-friendly way, which opens an avenue of smart materials for practical needs and industrialization.
研究领域:
材料科学
·
生物学
✓ 已验证
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 48
·20332-20342
·
IF 2.7
Guanghao Mao,Huaxin Yang,Shuhang Deng,Wenyu Cao,Ping Deng,Yan Yu
A pair of star-like conjugated isomers (Tetra-8-IQ and Tetra-9-IQ) with indolo[2,3-b]quinoxaline as the star arm and tetraphenylethylene as the star core have been designed and synthesized. A comparative study has been conducted on the structural characteristics, electronic energy levels, spectral absorption, aggregation-induced emission, acid-stimulus response, and fluorescent applications of the two isomers. The results show that Tetra-8-IQ has lower lowest unoccupied molecular orbital/highest occupied molecular orbital energy levels, more redshifted optical absorption, and stronger fluorescence emission than Tetra-9-IQ. The two isomers are novel organic fluorescent materials as they both possess aggregation-induced emission characteristics and reversible acidichromism features. Tetra-8-IQ and Tetra-9-IQ were successfully applied in filter paper test strips and PMMA-based blending film to achieve fluorescent switch signals. Based on these findings, the INHIBIT and IMPLICATION molecular logic gates were successfully established, where acid and base were adopted as the input stimuli.
研究领域:
有机化学
·
材料科学
·
光化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2018
·
IF 2.829
Shuxin Sun,Cuiru Wang,Shiqi Han,Tifeng Jiao,Ran Wang,Juanjuan Yin,Qing Li,Yanqiu Wang,Lijun Geng,Xudong Yu,Qiuming Peng
Metal-ligand coordination is one of the most important interactions in supramolecular assembly. Terpyridine compounds demonstrate strong metal coordination ability and can coordinate with many transition metal ions to form complexes with unique optical and electrochemical properties. In this work, new self-assembled Langmuir films of three synthesized terpyridine derivatives with different spacers were prepared by Langmuir-Blodgett (LB) technique. The interfacial phase behaviors and coordination with K 2 PtCl 4 and ZnCl 2 subphases in the obtained LB films were studied. The spreading films from different subphases were transferred to corresponding solid substrates and their nanostructures and self-assembly features were characterized. The good acidichromism properties of the prepared LB films from present terpyridine derivatives were investigated by using UV–vis and FT-IR spectroscopy. The obtained results showed new clues for preparation of functional coordination polymers films and potential applications in molecular switches and biosensors fields.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Mengjie Li,Tingting Han,Huiwen Liu,Juan Xu,Chong Sun,Yongzhi Zhu,Weimin Xu,Daoying Wang
In this work, an intelligent and sensitive polyvinyl alcohol-acidochromic chitosan (PVA-ACS) nano-sensing label was developed for visually monitoring meat freshness. Based on the synthesis of 1-hydroxy-4-[4-(ethylsulfurate sulfonyl)-phenylazo]-naphthalene (HESPN), ACS was prepared through hydrogen bonding between the sulfonic acid groups in HESPN structure and the hydroxyl groups in chitosan (CS). Herein, PVA was used as the functional matrix and electrospinning technology was employed in this process. The chemical structure, surface morphology, mechanical properties, hydrophilicity, thermal stability, and biocompatibility of PVA-ACS nano-sensing label were investigated. Moreover, the PVA-ACS nano-sensing label exhibited sensitive color responsiveness and reversible color switching, and the properties enabled the naked-eye inspection of meat freshness during production, processing and transportation. Furthermore, a strategy incorporated the nano-sensing labels with a smartphone was developed to record color information in conjunction with the color recognition software (ColorColl). This work provided a valuable perspective for real-time freshness monitoring with high satisfaction and efficiency, opening new possibilities for meat quality grading.
研究领域:
食品科学
·
生物材料
·
纳米技术
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智能传感
·
包装工程
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食品安全
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高分子化学
·
肉品质量控制
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）