LANGMUIR
·
2015
·
IF 4.457
Yalan Yao,Yige Wang,Zhiqiang Li,Huanrong Li
We present herein an easy way to prepare novel responsive hydrogels by simply doping lanthanide complexes into a polymer hydrogel, poly(2-acrylamido-2-methyl-1-propanesulfonicacid) (PAMPSA). The resulting hybrid hydrogels can be readily processed into a range of shapes. Both the on–off luminescence switching and the healable properties are simultaneously achieved in the resulting responsive hybrid hydrogels. They exhibit effectively self-healing performance without any external stimulus and reversible “on–off” luminescence switching triggered by exposure to acid–base vapor. The key to this on–off luminescence switching behavior is that the protonation of the organic ligands compete with full coordination to Ln3+ and that incomplete coordination affects the luminescence yield. The high proton strength in the resulting hydrogels makes the doped lanthanide complexes unstable, and ammonia (or triethylamine) vapor can dramatically decrease the proton strength through neutralization, driving the full coordination of the ligand to Ln3+.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Jing Yang,Meng Chen,Peng Li,Fei Cheng,Yang Xu,Zhiqiang Li,Yige Wang,Huanrong Li
The integration of self-healing ability into luminescent switches have attracted increasing interest in designing smart optical devices. In this paper, an acid-base vapor modulated luminescent switch of hydrogels based on Eu-containing polyoxometalate (EuPOM) and poly(2-acrylamido-2-methyl-1-propanesulfonicacid) (PAMPSA) was readily prepared, which can self-heal within only about few minutes under ambient atmosphere. Besides, the hydrogels can easily be shaped into any desired form by pouring into molds. These remarkable features enable the resulting hydrogel as a promising “smart” material with use in smart devices, sensors, etc.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Jing Yang,Tingting Wang,Ran Guo,Decui Yao,Weiwei Guo,Shuo Liu,Zhiqiang Li,Yige Wang,Huanrong Li
Luminescent materials with dynamic responsiveness to external stimuli have attracted extensive attention for the development of advanced sensors and smart materials; however, self-healing capability is also of great importance for functional soft materials. An acid/base vapor reversibly triggered luminescence switch with self-healing ability is achieved by incorporating dynamic lanthanide metal–ligand (Ln–L) coordination into the soft polydimethylsiloxane polymer network. The emission color of the resultant luminescent material could be modulated by altering either the Eu3+/Tb3+ molar ratio or the excitation wavelength. The luminescence “On–Off” reversible switch is realized via direct alternating exposure to acid and base vapor, realizing reversible information encryption and decryption. The dynamic Ln–L cross-link as well as the hydrogen bond in the luminescent material endow it with excellent self-healing capability, high toughness, and stretchability. We believe this acid/base vapor-triggered self-healing switching strategy provides new insights for expanding the application range of luminescent materials.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2024
·Vol. 16
·期 11
·1547
·
IF 4.7
Yuxin Sun,Xinye Qian,Yan Gou,Chunling Zheng,Fang Zhang
Cellulose detectors, as green sensors, are some of the defensive mechanisms of plants which combat environmental stresses. However, extracted cellulose struggles to fulfil these functionalities due to its rigid physical/chemical properties. In this study, a novel cellulose dual-crosslinked framework (CDCF) is proposed. This comprises a denser temporary physical crosslinking bond (hydrogen bonding) and a looser covalent crosslinking bond (N,N-methylenebisacrylamide), which create deformable spaces between the two crosslinking sites. Abundant pH-sensitive carboxyl groups and ultralight, highly porous structures make CDCF response very sensitive in acid/alkaline vapor environments. Hence, a significant shrinkage of CDCF was observed following exposure to vapors. Moreover, a curcumin-incorporated CDCF exhibited dual shape and color changes when exposed to acid/alkaline vapors, demonstrating great potential for the multi-detection of acid/alkaline vapors.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ORGANIC & BIOMOLECULAR CHEMISTRY
·
2016
·Vol. 14
·期 17
·4039-4045
·
IF 3.559
Le Fang,Yuanli Hu,Qiang Li,Shutao Xu,Manivannan Kalavathi Dhinakarank,Weitao Gong,Guiling Ning
A novel AABB-type heteromultitopic monomer (APOPV), having a self-complementary perpendicular structure, could solely self-assemble to fluorescent cross-linked supramolecular polymers. Interestingly, the supramolecular gel film shows a sensitive fluorescence change on exposure to acid and base vapor, endowing this system with a potential application in gas detection.
研究领域:
材料科学
·
化学
·
超分子化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Yingjian Sun,Qingfeng Li,Shuai Wei,Ruichun Zhao,Jingfen Han,Guichen Ping
Herein we manifested an alternative route to synthesize water-soluble biopolymers from natural polysaccharides by chemically modifying aminated curdlan with succinic acid (SA) or ionic liquid (IL), and a series of flexible self-standing films were made from the homogeneous solutions consisting of europium(III) complexes in nanoclay and the above biopolymers under aqueous conditions, which are transparent and luminescent . Compared to film without curdlan derivatives, the presence of water-soluble decorated curdlan can significantly enhance the luminescence efficiency and improve photoluminescent stability of the films. Enhancements of the luminescent intensity were further remarkable when exposing the films to triethylamine vapor, while obvious luminescence quenching occurred upon exposure to HCl vapor. The films are encouraging optoelectronic detectors and vapor-sensitive luminescent sensors.
研究领域:
材料科学
·
光学
·
生物化学
✓ 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）