阿拉丁SCI论文搜索工具

ELECTROCHIMICA ACTA · 2016 · IF 4.803

A PMMA overlayer improving the surface-bound stability of photoanode for water splitting

Linlin Zhang,Yan Gao,Xin Ding

A PMMA (polymethly methacrylate) oligomer coating photoanode sensitized with the Ru(bpy) 3 phosphoric acid derivative 1 as photosensitizer and complex 2 as water oxidation catalyst was assembled for light driven water splitting. A simple and effective method was optimized by immersing the sensitized photoanode into the DCM solution dissolving 2 wt% PMMA for 15 s. With the decorated photoanode as working electrode, the DS-PEC displayed much better long-term stability, the photocurrent density of which was found to be 0.57 mA/cm 2 after 200 s sustaining light illumination and is four times as high as the undecorated one (0.15 mA/cm 2 ).

研究领域: 材料科学 · 化学

✓ 已验证 DOI 高影响因子

查看原文查看 PubMed

ADVANCED FUNCTIONAL MATERIALS · 2021 ·Vol. 31 ·期 47 ·2105771 · IF 18.808

Moisture-Induced Reversible Phase Conversion of Cesium Copper Iodine Nanocrystals Enables Advanced Anti-Counterfeiting

Fei Zhang,Wenqing Liang,Lintao Wang,Zhuangzhuang Ma,Xinzhen Ji,Meng Wang,Yue Wang,Xu Chen,Di Wu,Xinjian Li,Yu Zhang,Chongxin Shan,Zhifeng Shi

Hydrochromic materials have attracted widespread attention in the fields of anti-counterfeiting because of their ability of the reversible light absorption and/or emission properties in response to water. Here, for the first it is demonstrated that the ternary copper halides Cs 3 Cu 2 I 5 nanocrystals (NCs) possess excellent hydrochromic properties. The prepared Cs 3 Cu 2 I 5 NCs films can dynamically extract and insert CsI by exposing/removing water to realize the reversible conversion between blue-emissive Cs 3 Cu 2 I 5 and yellow-emissive CsCu 2 I 3 . Interestingly, polymethyl methacrylate (PMMA) coated Cs 3 Cu 2 I 5 can effectively avoid the extraction of CsI and maintain long-term stability in the water. Further, the hydrochromic Cs 3 Cu 2 I 5 and water-resistant Cs 3 Cu 2 I 5 @PMMA are used as the inks to synergistically act on anti-counterfeiting information to achieve multiple encryption effects, which can clearly identify and authenticate the effective information after moisture decryption. Importantly, the pattern can be re-encrypted to the invalid pattern after water evaporation. In addition, the anti-counterfeiting pattern has excellent stability during repeated encryption/decryption conversion cycles, which can not only balance the accessibility of anti-counterfeiting information but also effectively improve the security of information. This new discovery may not only deepen the understanding of Cs 3 Cu 2 I 5 but also provide new options for the design of hydrochromic materials for anti-counterfeiting information.

CAS / MDL: 7681-65-4 534-17-8 112-80-1 112-88-9 111-86-4

研究领域: 材料科学 · 光学 · 防伪技术

✓ 已验证产品关联 DOI 高影响因子

查看原文查看 PubMed

查找使用阿拉丁产品的科研文献

与阿拉丁产品相关的已发表科研成果

热门产品

A PMMA overlayer improving the surface-bound stability of photoanode for water splitting

Moisture-Induced Reversible Phase Conversion of Cesium Copper Iodine Nanocrystals Enables Advanced Anti-Counterfeiting