JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Wenna Zhang,Wenwen Zhang,Shuai Chen,Bin Guo,Hua Gu,Yu Xue,Zexu Xue,Jingkun Xu
In recent years, polyselenophene and its derivatives have been paid more attention due to their unique properties such as lower band gaps and redox potentials . However, the poor solubility and molecular rigidity of polyselenophene and its derivatives limit them to use in flexible optoelectronic devices. Therefore, in order to enrich the structures and properties, fully understand the structure-property relationship and further improve the electrochromic performances of polyselenophene and its derivatives, we synthesized its propyl-analogues as precursors, to electrosynthesize three conducting polymers , poly(3,4‑propylenedioxyselenophene) (PProDOS) and its alkyl-modified derivatives, poly(3,3′‑dimethyl‑3,4‑dihydro‑2H‑selenopheno[3,4‑b][1,4]dioxepine) (PProDOS-C 1 ) and poly(3,3′‑dibutyl‑3,4‑dihydro‑2H‑selenopheno[3,4‑b][1,4]dioxepine) (PProDOS-C 4 ). The electrochemical and spectroelectrochemical behaviors of PProDOS and PProDOS-C n (n = 1, 4) were investigated in detail in an ionic liquid , 1‑butyl‑3‑methylimidazolium hexafluorophosphate (BmimPF 6 ). Results showed that PProDOS-C 1 and PProDOS-C 4 exhibited superior electrochromic performances such as high optical contrast (62%) and excellent coloration efficiency (573 cm 2 C −1 ). In addition, as the alkyl chains increased, the onset oxidation potentials of monomers and the optical band gaps of polymer films decreased and the electrochemical activity of polymers increase. These polymers supply varied electrochromic colors and have prospect in display application.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 59
·37544-37551
·
IF 3.361
Aygul Kadir,Ruxangul Jamal,Tursun Abdiryim,Nurbiya Sawut,Yuzhu Che,Zulpikar Helil,Hujun Zhang
In this study, an electrochemical sensor for dopamine (DA) detection has been developed by a composite of poly(3,4-ethylenedioxyselenophene) (PEDOS) and nitrogen-doped graphene (PEDOS/N-Gr) using an in situ polymerization method. Its structure and properties were then compared with those of the composites of poly(3,4-ethylenedioxythiophene) (PEDOT)/nitrogen-doped graphene (PEDOT/N-Gr), which were prepared by the same methods. FT-IR, Raman, UV-vis, XPS, mapping and SEM investigated the structure and morphology of these composites. These revealed that PEDOS/N-Gr had a higher conjugation degree than PEDOT/N-Gr. The synergetic effect between PEDOS and N-Gr was beneficial for the formation of a homogenous surface coating. The cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods were conducted for electrochemical detection of DA. Compared with PEDOT/N-Gr, the PEDOS/N-Gr displayed an enhanced sensitivity and electrocatalytic performance for DA detection with linear ranges of 0.008–80 μM (PEDOT/N-Gr: 0.04–70 μM) and limits of detection (LOD) of 0.0066 μM (S/N = 3) (PEDOT/N-Gr: 0.018 μM (S/N = 3)).
研究领域:
分析化学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale Research Letters
·
2022
·Vol. 17
·期 1
·1-11
·
IF 5.418
Kadir Aygul,Jamal Ruxangul,Abdiryim Tursun,Liu Xiong,Zhang Hujun,Serkjan Nawrzhan,Zou Dongna,Liu Ya jun
In this work, we successfully assembled an organic–inorganic core–shell hybrid p-n heterojunction ultraviolet photodetector by the electropolymerization deposition of poly(3,4-ethylenedioxyselenophene) (PEDOS) on the surface of zinc oxide nanoarrays (ZnO NRs). The structures of composite were confirmed by FTIR, UV–Vis, XRD and XPS. Mott–Schottky analysis was used to study the p-n heterojunction structure. The photodetection properties of ZnO NRs/PEDOS heterojunction ultraviolet photodetector were systematically investigated current–voltage (I–V) and current–time (I–t) analysis under different bias voltages. The results showed that PEDOS films uniformly grew on ZnO NRs surface and core–shell structure was formed. The p-n heterojunction structure was formed with strong built-in electric field between ZnO NRs and PEDOS. Under the irradiation of UV light, the device showed a good rectification behavior. The responsivity, detection rate and the external quantum efficiency of the ultraviolet photodetector reached to 247.7 A/W, 3.41 × 10 12 Jones and 84,000% at 2 V bias, respectively. The rise time ( τ r ) and fall time ( τ f ) of ZnO NRs/PEDOS UV photodetector were obviously shortened compared to ZnO UV photodetector. The results show that the introduction of PEDOS effectively improves the performance of the UV photodetector.
研究领域:
材料科学
·
光电材料
·
有机-无机杂化材料
✓ 已验证
DOI
高影响因子
ChemMedChem
·
2016
·Vol. 12
·期 3
·235-249
·
IF 2.98
Silong Zhang,Zhiyong Wang,Zhiye Hu,Changhao Li,Chu Tang,Kathryn E. Carlson,Junjie Luo,Chune Dong,John A. Katzenellenbogen,Jian Huang,Hai-Bing Zhou
Graphical Add a new element ! This is the first report of selenophene-core compounds as estrogen receptor (ER) ligands. In transcription assays, several selenophenes were profiled as superagonists for ERα; moreover, a few selenophenes exhibited antiproliferative activity similar to that of 4-hydroxytamoxifen in MCF-7 breast cancer cells while being nontoxic toward normal VERO cells. These new ligands could act as models for the development of novel agents leading to improved therapeutics that target the ER. The importance of the heterocyclic core elements with peripheral phenolic and alkyl substituents as a dominant structural motif of ligands for the estrogen receptor (ER) has been well recognized. In this study we expanded the structural diversity of core elements by preparing selenium-containing heterocycles and exploring the activities of these selenophenes on the two ERs, ERα and ERβ. Careful structure–activity relationship (SAR) analysis of their ER binding affinities showed that most selenophenes are ERβ-selective, with the position of the phenol substituents on the selenophene core and the nature of these substituents having a marked effect on their binding affinities. The compound bis(2-fluoro-4-hydroxyphenyl)selenophene ( 2 f ) has the highest relative binding affinity (RBA) of 24.3 for ERβ. In transcription assays, most selenophenes were found to exhibit partial to full agonist activity for both ER subtypes, with compounds bis(2-methyl-4-hydroxyphenyl)selenophene ( 2 b ), bis(4-fluoro-3-hydroxyphenyl)3-bromoselenophene ( 6 f ), and 2,3,5-tris(hydroxyphenyl)thiophenes ( 8 b and 8 d ) profiling as superagonists for ERα; however, several compounds display a range of ERα or ERβ antagonistic activities. A few selenophenes exhibited antiproliferative activity, with compound 8 c showing antiproliferative effects similar to that of 4-hydroxytamoxifen in breast cancer MCF-7 cells while being nontoxic to normal VERO cells. These new ligands could act as models for the development of novel agents leading to improved therapeutics that target the estrogen receptor.
研究领域:
药理学
·
化学
·
癌症研究
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Xinsheng Tang,Xiong Liu,Fangfei Liu,Tursun Abdiryim,Ruxangul Jamal,Nawrzhan Serkjan,Shuyue Xie,Cong Xue,Qian Cheng
Pyro-phototronic effect plays an important role in improving the photodetection performance of ultraviolet (UV) photodetectors (PDs). Here, a novel pyro-phototronic effect between TiO 2 nanoarrays (TiO 2 NRs) and the conducting polymer poly(3,4-ethylenedioxy selenophene) (PEDOS) is applied to fabricate a self-powered UV PD with the enhanced photodetection ability. The self-powered p-n heterojunction UV PD is fabricated by a face-to-face hybrid of acid (HCl and H 2 SO 4 )-treated TiO 2 NRs with PEDOS. Interestingly, a pyro-phototronic effect is found between TiO 2 NRs/FTO and PEDOS/FTO, and the acid treatment of TiO 2 NRs can dramatically enhance the pyro-phototronic effect. H 2 SO 4 treatment can improve the p-n heterojunction, while HCl treatment can increase carrier concentration due to the introduction of surface oxygen vacancies on the surface of TiO 2 NRs. Under UV light illumination and 0 bias voltage, the rise time (T rise ) and fall time (T fall ) of UV PD from the face-to-face hybrid of PEDOS/FTO with TiO 2 (HCl)/FTO are 0.080 s and 0.079 s, while the responsivity (R) and detectivity (D*) are 58.706 mA/W and 3.627 × 10 11 Jones, respectively. The face-to-face fabrication of UV PDs and the matching of the energy levels between PEDOS and TiO 2 NRs cause the pyro-phototronic effect due to temperature change and pyroelectric effect of TiO 2 NRs under the UV light illumination. This work gives a new idea to generate pyro-phototronic effect between TiO 2 NRs and conducting polymers for application in UV PDs field.
研究领域:
材料科学
·
光子学
·
纳米技术
·
电气工程
✓ 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）