ACS Applied Materials & Interfaces
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2023
·
IF 9.5
Jingxiao Chen,Yufeng Wang,Le Li,Yue-E Miao,Xu Zhao,Xiu-Ping Yan,Chao Zhang,Wei Feng,Tianxi Liu
The development of ultrastretchable ionogels with a combination of high transparency and unique waterproofness is central to the development of emerging skin-inspired sensors. In this study, an ultrastretchable semicrystalline fluorinated ionogel (SFIG) with visible-light transparency and underwater stability is prepared through one-pot copolymerization of acrylic acid and fluorinated acrylate monomers in a mixed solution of poly(ethylene oxide) (PEO) and fluorinated ionic liquids. Benefiting from the formation of the PEO-chain semicrystalline microstructures and the abundant noncovalent interactions (reversible hydrogen bonds and ion–dipole interactions) in an ionogel, SFIG is rendered with room-temperature stable cross-linking structures, providing high mechanical elasticity as well as high chain segment dynamics for self-healing and efficient energy absorption during the deformation. The resultant SFIG exhibits excellent stretchability (>2500%), improved mechanical toughness (7.4 MJ m–3), and room-temperature self-healability. Due to the high compatibility and abundance of hydrophobic fluorinated moieties in the ionogel, the SFIG demonstrates high visible-light transparency (>97%) and excellent waterproofness. Due to these unique advantages, the as-prepared SFIG is capable of working as an ultrastretchable ionic conductor in capacitive-type strain sensors, demonstrating excellent underwater strain-sensing performances with high sensitivity, large detecting range, and exceptional durability. This work might provide a straightforward and efficient method for obtaining waterproof ionogel elastomers for application in next-generation underwater sensors and communications.
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Theranostics
·
2023
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IF 12.4
Chenyang Yin,ZeKun Wang,Chunxue Dai,Bangjia Yang,Weiyun Wang,Endong Yang,Feng Guo,Cundong Fan,Pu Zhang,Jikui Sun,Dongdong Sun
Background: Singlet oxygen ( 1 O 2 ) has received considerable research attention in photodynamic therapy (PDT) due to its cytotoxic solid features. However, the inherent hypoxic state of the tumor microenvironment (TME) leads to the meager 1 O 2 quantum yield of inorganic PDT reagents, and their application in vivo remains elusive. Methods: We developed a novel strategy to fabricate active photosynthetic bacteria/photosensitizer/photothermal agent hybrids for photosynthetic tumor oxygenation and PDT and PTT tumor therapy under different laser irradiation sources. Photosynthetic bacteria combined with Ce6 photosensitizer and Au NPs photothermal agent, the obtained Bac@Au-Ce6 effectively targets tumor tissues and further enhances the tumor accumulation of Au-Ce6. Results: The results showed that the Au-Ce6-loaded engineered bacteria (Bac@Au-Ce6) maintained the photosynthetic properties of Syne . After i.v. injection, Bac@Au-Ce6 efficiently aggregates at tumor sites due to the tumor-targeting ability of active Syne . With 660 nm laser irradiation at the tumor site, the photoautotrophic Syne undergoes sustained photosynthetic O 2 release and immediately activates O 2 to 1 O 2 via a loaded photosensitizer. PTT was subsequently imparted by 808 laser irradiations to enhance tumor killing further. Conclusions: This work provides a new platform for engineering bacteria-mediated photosynthesis to promote PDT combined with PTT multi-faceted anti-tumor.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Qiangqiang Wang,Xuanyu Zhang,Lei Qian,Chaoyu Xiang
Perovskite quantum dot light-emitting diodes (QLEDs) are potential candidates for next-generation displays due to their high color purity and wide color gamut. Due to the strong electron-accepting ability of poly[bis(4-phenyl) (2,4,6-trimethylphenyl) amine] (PTAA), quantum dot (QD) films are prone to be charged, which leads to the imbalance of charge injection and the increase of nonradiative recombination, ultimately affecting the performance of the QLEDs. Here, we compared and studied two polymers, poly(methyl methacrylate) (PMMA) and poly(vinyl pyrrolidone) (PVP), as the hole interface buffer layers of QD films, which effectively reduced the defect density, suppressed nonradiative recombination, and greatly improved the efficiency and stability of QLEDs. The devices with PMMA achieved a maximum external quantum efficiency of 20.71%.
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Light-Science & Applications
·
2023
·Vol. 12
·期 1
·1-10
·
IF 19.4
Gu Kai,Zhong Haizheng
Light-to-heat conversion has been intensively investigated due to the potential applications including photothermal therapy and solar energy harvesting. As a fundamental property of materials, accurate measurement of light-to-heat conversion efficiency (LHCE) is of vital importance in developing advanced materials for photothermal applications. Herein, we report a photothermal and electrothermal equivalence (PEE) method to measure the LHCE of solid materials by simulating the laser heating process with electric heating process. The temperature evolution of samples during electric heating process was firstly measured, enabling us to derive the heat dissipation coefficient by performing a linear fitting at thermal equilibrium. The LHCE of samples can be calculated under laser heating with the consideration of heat dissipation coefficient. We further discussed the effectiveness of assumptions by combining the theoretical analysis and experimental measurements, supporting the obtained small error within 5% and excellent reproducibility. This method is versatile to measure the LHCE of inorganic nanocrystals, carbon-based materials and organic materials, indicating the applicability of a variety of materials.
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Solar RRL
·
2023
·Vol. 7
·期 12
·2300188
·
IF 7.9
Yichao Wang,Zipeng Xing,Chunxu Wu,Meijie Liu,Jiapeng Gao,Na Zhang,Zhenzi Li,Haixia Liu,Wei Zhou
The development of heterojunction composite photocatalysts with sophisticated charge transfer mechanisms and interfaces is a promising approach to enhance photocatalytic efficiency. Herein, for the first time, a peanut-like Zn 0.5 Cd 0.5 S/BiVO 4 S-scheme heterostructure visible-light composite photocatalyst via a two-step hydrothermal method is synthesized. S-scheme heterostructures, which can maintain the maximum redox capacity in the conduction and valence bands of the catalyst, have been established as an effective charge transfer mode in the field of photocatalysis. The Zn 0.5 Cd 0.5 S/BiVO 4 heterojunction photocatalyst exhibits 99.52% degradation efficiency for tetracycline-based organic pollutants under visible light irradiation. In addition, the photocatalytic hydrogen production efficiency of the composite catalyst is as high as 8969.58 μmol g −1 h −1 , which is 69.24 and 4.35 times higher than that of single BiVO 4 and Zn 0.5 Cd 0.5 S, respectively. Through density functional theory calculations and experimental studies, the material conformed to the charge transfer mode of the S-scheme heterojunction is determined. The improved photocatalytic efficiency can be attributed to the formation of S-scheme heterogeneous interface, which bends the energy band at the interfacial contact, and the formation of an internal electric field, which hinders rapid charge recombination and prolongs the lifetime of charge carriers.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2023
·Vol. 24
·期 10
·9055
·
IF 5.6
Qianli Li,Yi Hou,Pinyin Cao,Ruiye Bi,Songsong Zhu
The treatments generally employed for temporomandibular joint osteoarthritis (TMJOA) involve physical therapy and chemotherapy, etc., whose therapeutic efficacies are impaired by the side effects and suboptimal stimulus responsiveness. Although the intra-articular drug delivery system (DDS) has shown effectiveness in addressing osteoarthritis, there is currently little reported research regarding the use of stimuli-responsive DDS in managing TMJOA. Herein, we prepared a novel near-infrared (NIR) light-sensitive DDS (DS-TD/MPDA) by using mesoporous polydopamine nanospheres (MPDA) as NIR responders and drug carriers; diclofenac sodium (DS) as the anti-inflammatory medication; and 1-tetradecanol (TD) with a phase-inversion temperature of 39 °C as the drug administrator. Upon exposure to 808 nm NIR laser, DS-TD/MPDA could raise the temperature up to the melting point of TD through photothermal conversion, and intelligently trigger DS release. The resultant nanospheres exhibited an excellent photothermal effect and effectively controlled the release of DS through laser irradiation to accommodate the multifunctional therapeutic effect. More importantly, the biological evaluation of DS-TD/MPDA for TMJOA treatment was also performed for the first time. The experiments’ results demonstrated that DS-TD/MPDA displayed a good biocompatibility in vitro and in vivo during metabolism. After injection into the TMJ of rats afflicted with TMJOA induced by unilateral anterior crossbite for 14 days, DS-TD/MPDA could alleviate the deterioration of TMJ cartilage, thus ameliorating osteoarthritis. Therefore, DS-TD/MPDA could be a promising candidate for photothermal-chemotherapy for TMJOA.Keywords:mesoporous polydopamine;drug release system;NIR laser-responsive;controlled release;temporomandibular joint osteoarthritis
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INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Xiaolin Zhu,Zhangcheng Pan,Tianyue Xu,Xiuwen Shao,Zhaoju Gao,Qingyu Xie,Yupeng Ying,Wei Pei,Hao Lin,Jia Wang,Xiaosheng Tang,Weiwei Chen,Yongfeng Liu
All-inorganic perovskite quantum dots (PeQDs) have sparked extensive research focus on white-light-emitting diodes (WLEDs), but stability and photoluminescence efficiency issues are still remain obstacles impeding their practical application. Here, we reported a facile one-step method to synthesize CsPbBr3 PeQDs at room temperature using branched didodecyldimethylammonium fluoride (DDAF) and short-chain-length octanoic acid as capping ligands. The obtained CsPbBr3 PeQDs have a near-unity photoluminescence quantum yield of 97% due to the effective passivation of DDAF. More importantly, they exhibit much improved stability against air, heat, and polar solvents, maintaining >70% of initial PL intensity. Making use of these excellent optoelectronic properties, WLEDs based on CsPbBr3 PeQDs, CsPbBr1.2I1.8 PeQDs, and blue LEDs were fabricated, which show a color gamut of 122.7% of the National Television System Committee standard, a luminous efficacy of 17.1 lm/W, with a color temperature of 5890 K, and CIE coordinates of (0.32, 0.35). These results indicate that the CsPbBr3 PeQDs have great practical potential in wide-color-gamut displays.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 15
·1-8
·
IF 2.8
Zheng Qiao,Du Shunli,Sun Quanzhen,Huang Jingang,Chen Pengsen,Zhou Hui,Deng Hui,Zhang Caixia,Wu Jionghua,Cheng Shuying
A semitransparent organic solar cells (STOSCs) based on the PTB7-TH:PC 71 BM blended were obtained. The power conversion efficiency (PCE) and an average visible light transmission rate achieved 5.06% and 47.95%, respectively. For sufficiently absorption of the sunlight, the multi-terminal tandem solar cells (TSCs) were constructed. Three different structures of TSCs are constructed to adequately absorb the sunlight. One of them is the superposition of five same STOSCs, the PCE of TSCs obtains 10.83%. One is STOSCs as the top cell and the normal organic solar cells as the bottom cell; the PCE of TSCs obtains 9.90%. And the other one is STOSCs as the top cell and inorganic Cu 2 ZnSn(S,Se) 4 as the bottom cell; the PCE of TSCs obtains 11.29%, and the absorption wavelength range extends to 1200 nm with the antireflection film.
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MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Jiale Zhang,Caizhi Lv,Chaoting Shi,Jinhua Feng,Lan Wu
In this study, OV-HAp with abundant oxygen vacancies (OVs) were prepared by calcining carbonate-doped HAp (CHAp), and the effects of calcination temperature, time and atmosphere on the formation of OVs in OV-HAp and the influence of OVs concentration on its photoelectrochemical properties were investigated in detail. The results showed that the calcination temperature and atmosphere play a major role in the generation of OVs in OV-HAp. Through changing the temperature or atmosphere, the optical absorption range of OV-HAp can be broadened to the visible light and the band gap can be reduced to 1.6 eV. OV-HAp obtained by calcining CHAp at 600℃ for 5 h under H 2 atmosphere (OV-HAp-H 2 ) exhibited the highest efficiency for tetracycline (TC) photocatalytic degradation (65.4%). h + and ·O 2 – were demonstrated to be the main active species in the degradation process by radical trapping experiments. Meanwhile, an integrated platform for photocatalytic degradation of TC with online spectral monitoring was constructed, and the feasibility of online spectral monitoring the TC degradation was tentatively explored. This work will provide a theoretical and technical basis for the development of HAp-based high-efficient photocatalysts, and this is favorable for promoting their use by a large scale for water pollutant removal. Moreover, it will also open a new path for online spectral monitoring and kinetic study of photocatalytic degradation of organic pollutants.
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SENSORS AND ACTUATORS B-CHEMICAL
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2023
·
IF 8.4
Huimin Hao,Li Peng,Bin Yang,Guo-Jiang Mao,Jian Zhu,Shuyan Lou
Colorimetric biosensors are suitable for point-of-care assays due to the advantages of simple operation, fast analysis and direct visualization. Here a novel oxidase mimic of thioflavin T via light-activating was first discovered. Various chromogenic substrates can be efficiently oxidized via light-activated singlet oxygen ( 1 O 2 ). In particular, thioflavin T often binds to some unique conformations in bio-macromolecules (e.g., DNA G-quadruplex) with good specificity. This is valuable to develop versatile colorimetric biosensors with signal-switching functionality for direct visualizing of analytes. Using various recognition elements (molecular beacons, aptamers), we can realize the efficient assay of five different analytes, including mechlorethamine , DNA, K + , adenosine monophosphate, and amyloid fibril . Therefore light-activated oxidase mimic of thioflavin T can serve as a desirable tool to assay various analytes of pharmaceutical, food or environmental interest.
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CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Tao Chen,Fangpei Ma,Zhe Chen,Menglin Xie,Ting Li,Yu Zhou,Jun Wang
Solar-driven benzene oxidation with dioxygen (O 2 ) provides a green and sustainable alternative for phenol production, but the construction of heterogeneous photocatalysts remains a huge challenge for efficient conversion under visible light irradiation and ambient conditions. Herein, we reported a facile microwave assisted strategy for the defect engineering of two-dimensional (2D) tungsten oxide while well maintaining the original crystalline architecture. Abundant oxygen vacancies were constructed on the 2D tungsten oxide, which remarkably promoted photochemical (light harvesting, charge separation and transfer) and O 2 activation behaviors, this promotion effect was further strengthened by the hybridization with Pt species with the formation of Schottky junction. The champion catalyst enabled a high phenol yield of 11.3% with a selectivity of 91% in the visible-light-driven benzene hydroxylation with atmospheric O 2 at room temperature. The catalyst can be facilely recovered and reused with stable activity. The oxygen vacancies and Pt co-catalyst were demonstrated to play vital roles in the photocatalytic formation of the reactive oxygen species (hydroxyl radials, ·OH) for effective oxidation.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Weichao Xu,Yuxuan Yi,Kunhao Guo,Anming Li,Xuehan Zhang,Feng Guo
The combination of photocatalysis and enzyme catalysis makes many previously difficult or slow chemical reactions easy to realize. A novel [email protected] −C 3 N 4 biohybrid catalyst was successfully synthesized using a simple in situ synthesis method to remove 4- tert -butylphenol (4- t -BP). A series of characterization methods were used to investigate the structure, morphology, chemistry, and optical properties of biohybrid catalysts. [email protected] −C 3 N 4 has improved photogenerated electron-hole pair separation efficiency and charge carrier mobility , as well as photocatalytic activity, with a removal rate of 4- t -BP nearly 100% within 180 min. The catalyst recycling test revealed that the composite could maintain its high removal efficiency after 10 recyclings. Meanwhile, the photocatalytic mechanism investigation reveals that ∙O 2 − play critical roles in the removal of 4- t- BP by g−C 3 N 4 . A detailed examination of the mechanism and pathway of 4- t -BP removal by photoenzyme oxidation was also carried out. This biohybrid catalyst opened up a new avenue for the advancement of environmental protection technology .
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