ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Xiufeng Song,Xuhai Liu,Dejian Yu,Chengxue Huo,Jianping Ji,Xiaoming Li,Shengli Zhang,Yousheng Zou,Gangyi Zhu,Yongjin Wang,Mingzai Wu,An Xie,Haibo Zeng
Transition metal dichalcogenides (TMDs) are promising candidates for flexible optoelectronic devices because of their special structures and excellent properties, but the low optical absorption of the ultrathin layers greatly limits the generation of photocarriers and restricts the performance. Here, we integrate all-inorganic perovskite CsPbBr3 nanosheets with MoS2 atomic layers and take the advantage of the large absorption coefficient and high quantum efficiency of the perovskites, to achieve excellent performance of the TMD-based photodetectors. Significantly, the interfacial charge transfer from the CsPbBr3 to the MoS2 layer has been evidenced by the observed photoluminescence quenching and shortened decay time of the hybrid MoS2/CsPbBr3. Resultantly, such a hybrid MoS2/CsPbBr3 photodetector exhibits a high photoresponsivity of 4.4 A/W, an external quantum efficiency of 302%, and a detectivity of 2.5 × 1010 Jones because of the high efficient photoexcited carrier separation at the interface of MoS2 and CsPbBr3. The photoresponsivity of this hybrid device presents an improvement of 3 orders of magnitude compared with that of a MoS2 device without CsPbBr3. The response time of the device is also shortened from 65.2 to 0.72 ms after coupling with MoS2 layers. The combination of the all-inorganic perovskite layer with high photon absorption and the carrier transport TMD layer may pave the way for novel high-performance optoelectronic devices.
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 86
·70211-70219
·
IF 3.84
Hongwei Chen,Wenqing Liang,Yi Chen,Guojian Tian,Qingchen Dong,Jinhai Huang,Jianhua Su
A series of novel 9,10-di(naphthalen-2-yl)anthracene (ADN) derivatives were designed and synthesized as blue fluorescent emissive materials by inducing diverse aromatic groups to the C-2 position of ADN. UV-Vis absorption, fluorescence emission spectroscopy and cyclic voltammetry (CV) were carried out to generally investigate the relationships between the physical properties and molecular structures. Moreover, four non-doped OLED devices adopting OCADN, FA3PADN, FA4PADN and OC4PADN as emitting materials were fabricated to study their electroluminescence (EL) performances. Among them, a device based on OCADN exhibited highly efficient sky-blue emission with a current efficiency of 2.25 cd A−1, power efficiency of 1.13 lm W−1 and CIE(x, y) coordinate of (0.16, 0.30) at 8 V. In addition, the device of OC4PADN showed efficient blue emission with a CIE(x, y) coordinate of (0.16, 0.14) at 8 V.
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 5
·959-967
·
IF 7.779
Chao Wang,Shoujuan Wang,Fangong Kong,Ning Chen
Sensitized Ti-oxo clusters have attracted growing attention as analogous molecular model compounds of dye-sensitized titanium dioxide solar cells. However, reports on the introduction of metal complexes as photosensitizers into Ti-oxo clusters are still very rare. Herein, with the use of an organometallic complex ferrocene as a sensitizer, two novel ferrocene-sensitized Ti-oxo clusters, namely, [Ti8(μ3-O)4(Dipa)2(Fcdc)4(OiPr)10]·2HOiPr (H2Fcdc = 1,1-ferrocene dicarboxylic acid, Dipa = diisopropanolamine, and HOiPr = isopropanol, Ti8Fcdc4) and [Ti10(μ4-O)2(μ3-O)4(Fcdc)2(μ2-OEt)8(OEt)10]·2HOEt (Ti10Fcdc2) have been successfully synthesized. Their molecular structures, light absorption, charge transfer, and photoelectrochemical properties were systematically investigated. It is demonstrated that the incorporation of Fcdc ligands shows a significant influence on the light absorption of the resulting clusters, and their absorption band edge is extended to about 580 nm. Furthermore, experimental measurements and theoretical calculations showed that the intense intramolecular charge transfer occurs from the Fcdc ligands to the Ti-oxo core. Based on these advantages, clusters Ti8Fcdc4 and Ti10Fcdc2 were used as photoelectrode precursors to carry out photoelectrochemical experiments, and both exhibited clear photocurrent responses. The molecular structure, light absorption, and effective charge transfer of materials have a direct bearing on their photoelectrochemical performances. This work not only provides novel structural models for sensitized Ti-oxo clusters towards the modulation of photoelectric properties but also provides new insights into further understanding the structure–property relationships of sensitized clusters.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 26
·13819-13826
·
IF 7.443
Jiawen Fang,Huiqing Fan,Mengmeng Li,Changbai Long
Nitrogen self-doped graphitic carbon nitride (C3N4+x) was successfully synthesized by the co-thermal condensation of the precursor with a nitrogen-rich additive. The resultant self-doped semiconductor was characterized by X-ray photoelectron spectroscopy (XPS), which indicated that the nitrogen atom substituted the sp2 carbon atom. The photocatalytic hydrogen evolution was systematically evaluated under visible light irradiation (λ > 400 nm). The average hydrogen evolution rate for C3N4+x was 1.8 times higher than that of pristine graphitic carbon nitride, and the superiority lay in greatly improved optical, emission and electronic properties of the nitrogen modified carbon nitride. This study filled the research gap of self-doping for 2D polymeric carbon nitride and will stimulate intensive investigations in the further improvement of photocatalytic hydrogen evolution.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Chen Jiawei,Liu Xiangyu,Cai Bo,Cheng Yuanzhuang,Wen Hao,Zhu Danlei,Xiong Yaonan,Dai Linjie,Yan Xinghua,Xiang Baixu,Luo Xiyu,Feng Wenjing,Du Jiuyao,Dong Shuyue,Shan Qingsong,Chen Shulin,Zeng Haibo,Xiong Qihua,Duan Lian,Ma Dongxin
Perovskite quantum dot light-emitting diodes have rapidly achieved high external quantum efficiencies of over 25%; however, hindered by limited operating stability originating from surface defects or ion migration in quantum dots. Here, we design a lattice-matched anchoring molecule, tris(4-methoxyphenyl)phosphine oxide (TMeOPPO- p ), to anchor the multi-site defects and stabilise the lattice. The target quantum dots exhibit high exciton recombination features with near-unity photoluminescence quantum yields (97%), and the as-fabricated quantum dot light-emitting diodes present a maximum external quantum efficiency of up to 27% at 693 nm, a low efficiency roll-off (over 20% at a current density of 100 mA cm −2 for the typical device) and an operating half-life of over 23,000 h. Besides, the air-processed devices maintain a maximum external quantum efficiency of over 26% with good storage stability. We expect this work to exert a profound influence on rational and on-demand molecule design for perovskite QDs, indicating great promise in optoelectronic applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2025
·
IF 3.3
Cheng-Hua Xu,An-Yang Tao,Mei-Qing Meng,Xi-Le Zhang,Cheng Fang,Feng-Zao Chen,De-Man Han
Early diagnosis of neurodegenerative diseases relies on highly sensitive detection of their specific biomarkers. However, existing photoelectrochemical (PEC) sensing technologies, despite the promising prospects, exhibit significant limitations in detection stability, photoelectric conversion efficiency, and portability. This work reported an innovative approach integrating transition metal doping modification with paper-based electrodes to construct a highly sensitive and low-cost paper-based sensing platform for detecting neurofilament light chain protein (NEFL). Fe-doped TiO 2 nanomaterials were synthesized via a homogeneous thermal treatment method. Fe substitution within the TiO 2 lattice constructed an intermediate energy level, optimizing the bandgap to 2.17 eV. This expanded the photoresponse range into the visible spectrum, enhancing photocurrent intensity by 31-fold compared to pure TiO 2 . A printed carbon paper triple-electrode system was fabricated via a template method, demonstrating excellent stability and reproducibility. Based on an immunosandwich model, the presence of target NEFL triggered glucose oxidase conjugated Au nanoparticles (GOx@Au NP)-labeled signal antibodies to catalyze glucose into hydrogen peroxide, further sensitizing the photocurrent response of Fe-TiO 2 to achieve wide-range (0.01-200 ng mL -1 ) detection of NEFL. This work enhances PEC efficiency via Fe-doped TiO 2 and solves portability with paper-based electrodes, enabling sensitive NEFL detection, which supports early diagnosis of neurodegenerative diseases, and provides an innovative technical solution for rapid point-of-care diagnosis of neurodegenerative diseases, while also offering theoretical and experimental references for the modification of wide-band gap semiconductor materials and the development of paper-based sensing platforms.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Jiadong Li,Pengyuan Xie,Lei Zhang,Wei Wang,Yingquan Wang,Yu Jia
The development of efficient photocatalysts for indoor air purification remains a significant challenge. In this study, oxygen-deficient indium oxide nanoflowers (In 2 O 3-x NFs) were synthesized via an acetic acid and P123-assisted template method followed by H 2 calcination. The as-prepared In 2 O 3-x NFs possess a hierarchical nanoflower-like morphology with a significantly enlarged specific surface area, which provides abundant active sites for enhanced adsorption of formaldehyde molecules. Moreover, the introduced oxygen defects effectively narrow the bandgap, extending the light absorption into the visible region, and serve as traps to promote the separation and migration of photogenerated charge carriers. As a result, the optimized In 2 O 3-x NFs exhibit remarkably improved photocatalytic activity for gaseous formaldehyde degradation under UV irradiation. After 2 h of illumination, the degradation efficiency achieved by In 2 O 3-x NFs is approximately 2 times and 4.5 times higher than those of pure In 2 O 3 NFs and In 2 O 3 nanoparticles (NPs), respectively. This work offers a feasible defect-engineering strategy for designing high-performance metal oxide photocatalysts toward volatile organic compound removal.
✓ 已验证
产品关联
DOI
高影响因子
Physical Review Materials
·
2026
·Vol. 10
·期 8
·085201
·
IF 3.6
Shuolei Wang,Zhongyi Qiu,Kun Li,Zhixing Ge,Shuxiang Cai,Wenguang Yang
To address the issues of poor operational flexibility and ecological disturbance risks in traditional underwater robots, as well as the low manufacturing accuracy and low functional integration of current photo-responsive soft systems, in this study, we developed a poly(N-isopropylacrylamide)/multiwalled carbon nanotube (MWCNT) photothermal composite hydrogel and a biomimetic modular soft robot inspired by the giant river shrimp. We systematically clarified the effects of material composition and structural thickness on the expansion, mechanical, and photoresponsive properties of the hydrogel to screen out the optimal formulation. The high-precision manufacturing of the hydrogel structure was achieved through a custom digital micromirror device based on an ultraviolet three-dimensional printing system, and a specialized predehydration impregnation cycle was combined to ensure the uniform dispersion of MWCNTs in the complex hydrogel structure. The structure of the robot was analyzed through transient fluid-solid coupling velocity simulation and finite element method analysis. Experimental results demonstrated that the robot exhibited rapid response and multidirectional flexible movement capabilities. This bionic soft robot possesses multimode controllable movement, underwater cargo transportation and targeted placement capabilities, and has good cyclic stability. Compared with the previously reported similar light-driven hydrogel robots, its speed fluctuation during eight consecutive cycles is relatively small, and the average error of 10 repeated targeted placements is approximately 2 mm, which can meet the basic requirements for precise underwater operations at the microscale. In this work, we establish a comprehensive theoretical and technical framework for the development of underwater soft robot technology for applications in unstructured aquatic environments.
✓ 已验证
DOI
高影响因子
CATALYSIS LETTERS
·
2023
·
IF 2.8
Du Juan,Bai Xinyue,Wang Simiao,Li Chunmei,Zhu Enwei,Liu Chunbo,Ma Chunhong,Guo Haiyong
The photocatalytic antibacterial method is one of the most effective and “green” methods for treating multidrug resistant (MDR) bacteria-caused infections. The most critical scientific question is how to improve the antibacterial efficiency of photosensitizers (PS). Herein, an organic-conjugated-polymer photocatalyst poly((E)-5-(2,5-dihydroxy-4-methylphenyl)-5′-(2-(5-methylthiophen-2-yl)vinyl)-[2,2'-bithiophene]-4-carboxylic acid) (PTH-COOH-(OH) 2 ) has been successfully synthesized. A new route for developing highly active organic-conjugated-polymer photocatalysts for environmental purification via the proper expansion of the backbone conjugate structure and the introduction of effective groups such as carboxyl and hydroxyl groups is proposed. The visible-light photocatalytic activities of PTH-COOH-(OH) 2 were evaluated against methicillin-resistant Staphylococcus aureus ( MRSA ), Staphylococcus epidermidis ( S. epidermidis ) and Escherichia coli ( E. coli ) under LED white light. A very high antimicrobial efficiency was achieved for optimized 0.3 mg mL −1 PTH-COOH-(OH) 2 under visible light illumination. Over 7 log of MRSA was killed in 3 h, 7 log of S. epidermidis was killed in 3 h, and 93.3% decomposition of E. coli was achieved in 3 h. These photoantimicrobial effectiveness values are among the most widely published for conjugated polymer photocatalysts. The findings of trapping studies and electron spin resonance (ESR) spectroscopic investigations indicated that during the photocatalytic antimicrobial process, ·OH, 1 O 2 , ·O 2 − , and e − are largely reactive oxygen species (ROS). Importantly, following recycling processes, the PTH-COOH-(OH) 2 photocatalyst demonstrated satisfactory stability and excellent photocatalytic activity. Graphical Abstract
The organic-conjugated-polymer photocatalysts poly((E)-5-(2,5-dihydroxy-4-methylphenyl)-5′-(2-(5-methylthiophen-2-yl)vinyl)-[2,2′-bithiophene]-4-carboxylic acid) (PTH-COOH-(OH) 2 ) is successfully synthesized using the Stille coupling reaction. PTH-COOH-(OH) 2 exhibits more outstanding photocatalytic antibacterial activity and stability, and has broad-spectrum antibacterial efficacy that can kill Gram-positive bacteria ( MRSA , Staphylococcus epidermidis ) and Gram-negative bacteria ( Escherichia coli) under visible light irradiationtreat. The highly photocatalytic antibacterial active is developed via the proper expansion of the backbone conjugate structure and the introduction of effective groups such as carboxyl and hydroxyl groups.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2014
·Vol. 3
·期 4
·629-634
·
IF 0
Xinhong Xiong,Zhaoqiang Wu,Jingjing Pan,Lulu Xue,Yajun Xu,Hong Chen
Tailoring the surface properties of poly(dimethylsiloxane) (PDMS) is essential for the advancement of its applications. However, the modification process is usually complicated and limited due to the chemical inertness of the surfaces of PDMS. Here, we report for the first time, a facile and versatile method for the functional surface modification of PDMS via visible light-induced grafting polymerization at room temperature. This modification is readily achieved in two steps: (1) covalently integrating alkyl bromine into the PDMS networks using a simple mixing procedure and (2) visible light-induced surface grafting polymerization using Mn2(CO)10. We have demonstrated that the PDMS surface can be functionalized with a wide variety of polymers via covalent grafting, such as poly(trifluoroethyl methacrylate) (PTFEMA), poly(N-isopropylacrylamide) (PNIPAAm), poly(acrylic acid) (PAA) and poly(vinyl acetate) (PVAc). As an example, after the grafted PVAc was transformed into its hydrophilic analogue poly(vinyl alcohol) (PVA), anti-biofouling functionalization of PDMS was obtained. The anti-biofouling properties of the functionalized PDMS were demonstrated using cell adhesion and bacterial adhesion tests. Moreover, the grafting kinetics of PVAc showed that this process was fast and efficient.
✓ 已验证
DOI
PubMed
Pharmaceutics
·
2021
·Vol. 13
·期 12
·2145
·
IF 6.321
Lu Tang,Aining Zhang,Yijun Mei,Qiaqia Xiao,Xiangting Xu,Wei Wang
The combinational application of photothermal therapy (PTT), chemotherapy, and nanotechnology is a booming therapeutic strategy for cancer treatment. Multi-walled carbon nanotube (MWNT) is often utilized as drug carrier in biomedical fields with excellent photothermal properties, and indocyanine green (ICG) is a near-infrared (NIR) dye approved by FDA. In addition, ICG is also a photothermal agent that can strongly absorb light energy for tumor ablation. Herein, we explored a synergistic strategy by connecting MWNT and a kind of ICG derivate ICG-NH2through hyaluronic acid (HA) that possesses CD44 receptor targeting ability, which largely enhanced the PTT effect of both MWNT and ICG-NH2. To realize the synergistic therapeutic effect of chemotherapy and phototherapy, doxorubicin (DOX) was attached on the wall of MWNT via π–π interaction to obtain the final MWNT-HA-ICG/DOX nanocomplexes. Both in vitro and in vivo experiments verified the great therapeutic efficacy of MWNT-HA-ICG/DOX nanocomplexes, which was characterized by improved photothermal performance, strengthened cytotoxicity, and elevated tumor growth inhibition based on MCF-7 tumor models. Therefore, this synergistic strategy we report here might offer a new idea with promising application prospect for cancer treatment.Keywords:multi-walled carbon nanotube;photothermal therapy;indocyanine green;synergistic strategy;cancer treatment;targeted drug delivery
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Jianmei Pan,Wei Shen,Yahai Zhang,Hua Tang,Haoyu Sun,Wenqiang Zhong,Xuehua Yan
Photocatalytic water splitting to product hydrogen (H 2 ) is a desired route to utilize solar energy into chemical energy. At present, most photocatalysts for H 2 generation contains metallic elements with high-cost, confined reserves, and environmentally unfriendly. The exploitation of metal-free and efficient photocatalysts becomes particularly important. Herein, a new metal-free g-C 3 N 4 -based heterojunction composites were facilely produced via the ultrasonic assisted deposition and subsequent calcination from g-C 3 N 4 layers embedded with SiOC with prominent conductivity and large surface area. Systematic investigates suggested that the SiOC/g-C 3 N 4 heterojunctions exhibited eminently meliorated photocatalytic H 2 production efficiency. The optimum H 2 production rate (1020 μmol h −1 g −1 ) of the SiOC/g-C 3 N 4 photocatalyst is 3.2 and 25.5 folds that of g-C 3 N 4 and SiOC , respectively. The boosted photocatalytic activity primarily originates from the increased absorptivity of light, the markedly expedited charge migration and the impeded recombination of charge carriers. This study offers a new perspective for the scientific contrive and fabrication of high-quality heterojunction photocatalysts for solar energy utilization.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）