Polymer Chemistry
·
2025
·
IF 3.9
Shenshen Li,Dong Wang,Yue Liu,Wenbing Kang,Xu Wang,Hao Cui,Haihua Wang,Huan Chen,Qianqian Wang
Ambient photopolymerization remains hindered by oxygen inhibition, particularly in submicron films and under lowintensity visible light. Here, we report a synergistic photoinitiator system composed of alkyne-functionalized naphthalimide and a borate additive that enables oxygen-tolerant and rapid photopolymerization from near-UV to blue light. Upon light irradiation, photo-induced electron transfer (PET) between borate and naphthalimide simultaneously accelerates radical generation and neutralizes peroxyl species, forming a robust anti-oxygen mechanism. This system achieves efficient curing of submicron-thick resin films in air, reaching 69% retention within 1 s under 405 nm LED light at 35 mW/cm 2 , which far exceeds that of conventional phosphine oxide initiators (0%) and thiol-ene (~6%) systems under identical conditions, while micron-thick films achieve approximately 95% retention. The platform is broadly compatible with diverse resins-including epoxy acrylate, acrylated soybean oil, and polyurethane acrylate-and demonstrates excellent storage stability, scalability, and patterning resolution down to 0.4 μm under ambient conditions without inert gas protection. This work provides a generalizable strategy for oxygen-tolerant photopolymerization and ambient-condition photopolymerization.
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APPLIED CATALYSIS A-GENERAL
·
2025
·
IF 4.8
Rongjiao Tan,Bingguang Zhang,Xianghong Li,Changjun Yang,Dingguo Tang,Kejian Deng
The development of highly efficient visible-light-driven photocatalysts based on metallothioporphyrazines has recently attracted significant attention for solar energy utilization. In this work, a novel asymmetric cobalt 19,22-bis(butyloxy)-4,5,9,10,14,15-hexakis(butylthio)porphyrazine (denoted as C1) was synthesized through the magnesium template method using 2,3-bis(butylthio)maleonitrile and 3,6-dibutoxyphthalonitrile as precursors. Significantly, the asymmetric C1 exhibited superior photogenerated charge separation capability compared to the symmetric cobalt octakis(butylthio)porphyrazine (denoted as C2), which was testified by photoluminescence spectrum, photocurrent response and electrochemical impedance spectrum. When serving as a visible-light-driven photocatalyst, C1 can selectively oxidize amines to their corresponding imines under visible light (λ ≥ 420 nm) irradiation using atmospheric O 2 as the oxidant, displaying higher photocatalytic activity than C2. Reactive oxygen species including singlet oxygen ( 1 O 2 ) and superoxide anion radical (O 2 •- ) participated in the photocatalytic oxidation reaction, which were confirmed by active species quenching experiments and electron spin resonance (ESR) measurements. Hammett plot analysis indicated the involvement of a carbocation intermediate in the photocatalytic process. This work provides a new strategy for amine oxidation and highlights the significant potential of asymmetric metallothioporphyrazines as visible-light-driven photocatalysts for organic synthesis.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yiwei Han,Jianyang Lu,Yanbing Wu,Kaizhi Wang,Peng Miao,Chenbo Ji,Xuemei Jia,Jie Yang,Genxi Li
Phase-separated condensates selectively enrich a wide range of molecules and regulate their properties, playing essential roles in cellular functions and pathological processes. While their regulatory effects on macromolecules have been extensively studied, the effects on small molecules remain less understood. This study carefully investigates how peptide condensates affect the light absorption properties across twelve small-molecule dyes. By controlling the formation and removal of the condensates, it is observed that the dyes exhibit diverse changes in light absorption, depending on their enrichment state and location within the condensates. This phenomenon is attributed to the combined physiochemical properties of the condensates, including the spatial confinement and the chemical microenvironment. Based on this finding, a simple spectral method is developed for the analysis of the condensate-small molecule interaction. This approach is further applied to an antitumor drug, demonstrating its general applicability. This study uncovers the fundamental phenomenon that biomolecular condensates modulate the light absorption of small molecules, providing implications for pharmacodynamics and broader biomedical research.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Guan Jie,Ma Jianhang,Zhou Likuan,Zou Yihao,Ye Lingbin,Hou Wenjun,Zhang Pan-ke,Dai Xingliang,Zhang Hao,Talapin Dmitri V.,Wang Yuanyuan
Optical patterning of quantum dots is essential for the fabrication of light-emitting diodes displays. However, current patterning methods either require inert environments or compromised quantum dots optical properties under ambient conditions. Here, we report a photoresist-free strategy enabling direct quantum dot patterning in air by using triphenylphosphine, a cost-effective, commercially available molecule that functions simultaneously as a surface ligand, photoinitiator, and oxidation protector. Under light exposure, triphenylphosphine reacts with atmospheric oxygen to trigger solubility changes, allowing precise patterning with resolutions up to 9534 dpi. The resulting devices exhibit external quantum efficiencies of 21.6% (blue), 25.6% (green), and 20.2% (red). We further demonstrate full-color active-matrix quantum dots light-emitting diodes displays by integrating the patterned red, green and blue quantum dots with thin-film transistor backplanes. This work offers a scalable, non-destructive, and environmentally compatible patterning solution for industrial display technologies.
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Materials Research Express
·
2025
·Vol. 12
·期 4
·045901
·
IF 2.2
Yuqi Dong,Qing-an Qiao,Ruping Wang,Jiahua Li,Honglan Cai,Hongwei Gao,Yanbin Xu
With different Zn2+/Cd2+ ratios, ZnxCd1−xS (x = 0.1–0.9) were prepared by a hydrothermal method. The structural and optical properties of them were analyzed via XRD, SEM, XPS, BET, UV–Vis DRS and PL characterization tests. The results from the degradation of methylene blue (MB), rhodamine B (RhB) and tetracycline (TC) under visible light showed that the photocatalytic performance of ZnxCd1−xS (x = 0.1–0.9) series were superior to that of pure ZnS and CdS, and Zn0.6Cd0.4S was the best one. The photocatalytic processes were tested in different water sources, and the data implied that the degradation efficiency of dyes and TC by Zn0.6Cd0.4S in sea water, lake water, and tap water differed a little to the cases in deionized water. The degradation ratio of MB, RhB and TC could reach 98.90%, 98.99% and 91.95% by Zn0.6Cd0.4S. The photocatalytic mechanism was further revealed by active species capture experiments and theoretical calculations. The results indicated that the introduction of Cd2+ led to a decreased band gap and an enhanced response to visible light. The photogenerated electron–hole pair separation efficiency was increased, and the electrons jumped to the conduction band to react on the catalyst surface for the degradation. The effect of the solution pH was studied as well and revealed that a natural pH was preferred. All the data indicated that Zn0.6Cd0.4S exhibited excellent photocatalytic performance and good stability which could be a promising candidate for the degradation of organic pollutants.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Shikai Xue,Xin Li,Lin Li,Shan Huang,Jinhua Luo,Haiyan Wang,Qiujun Lu,Guoxing Yin,Fuyou Du
The photocatalytic process is a promising, cost-effective, and environmentally friendly method for remediating environmental pollution. Unfortunately, practical applications have been limited by the shortage of highly efficient photocatalysts. To overcome this problem, a unique cactus-like Bi 12 O 17 Br 2 /Bi 2 O 3 /Bi 25 FeO 40 (BBF) was synthesized facilely by hydrolyzing of rod-like MOF (CAU-17/MIL-100(Fe)) precursor, and the ratio of photocatalyst was adjusted by controlling the hydrolysis time. In this photocatalyst, Bi 12 O 17 Br 2 and Bi 25 FeO 40 were dispersed in Bi 2 O 3 , as well as Bi 12 O 17 Br 2 and Bi 2 O 3 were attached to an S-type heterojunction. The developed BBF demonstrated high photocatalytic efficiency and exceptional stability in degrading five bisphenol pollutants. The photocatalytic degradation of bisphenol A (BPA) using BBF could reach up to 98.7% within 60 min under visible light irradiation. Further characterization demonstrated a significant improvement in the photogenerated charge transfer efficiency and confirmed the S-scheme structure of BBF. Additionally, the possible degradation pathways and the evolution of intermediate toxicity of BPA were discussed according to the intermediates detected in the photocatalytic reaction process.
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GREEN CHEMISTRY
·
2025
·
IF 9.2
Lingli Zhu,Jin Cao,Hongmin Yang,Dekui Shen,Haitao Hu,Mengjia Dou
Biomass-derived carbon quantum dots (CQDs) have emerged as a promising sustainable alternative to conventional semiconductor quantum dots for light-emitting diode (LED) applications, offering distinct advantages in terms of renewability, low toxicity, and environmental friendliness. However, the efficient preparation of multicolor biomass-derived CQDs remains a critical challenge for practical implementation. In this study, lemon peel was screened as the optimal precursor from 26 types of agricultural and forestry residues, landscaping wastes, and food wastes. A green synthesis strategy involving hydrothermal carbonization coupled with controlled heteroatom doping was developed, which enabled the preparation of multicolor CQDs with superior photoluminescence properties. The synthesized CQDs exhibited tunable emission wavelengths (440–655 nm), high fluorescence quantum yields (4.98–35.58%), and exceptional photostability. High-efficiency LEDs were successfully fabricated by constructing a multilayer device structure using a mixture of multicolor biomass-derived CQDs and polymers. The CQD-based LEDs exhibited high color rendering indices (81.8–92.9) and a wide color temperature range (3912–6964 K) covering the visible spectrum while maintaining a decay rate below 30% over an operating lifetime of 11 832–12 815 h. This work not only provides a novel route for low-cost and sustainable synthesis of CQDs but also establishes theoretical and technical foundations for green electronic devices, accelerating the application of biomass resources in high-value optoelectronic devices.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xianghan Cheng,Zhongmin Liu,Ruilin Wang,Yajun Guo,Wenyuan Han,Yong-Zheng Zhang,Da-Shuai Zhang,Xiuling Zhang,Suijun Liu,Longlong Geng
Regulating the separation and transport capabilities of the photocarriers is an important strategy to enhance corresponding activity of photocatalysts. In this work, novel Ti-MOF/Ti 3 C 2 heterojunction with face-to-face intimate contact was design and synthesized through a hydrothermal assemble route. The negatively charged Ti 3 C 2 not only facile the absorb of Ti nodes but also offer rich nucleation sites for the in-situ growth Ti-MOF. Under visible light irradiation, the optimized TM-0.05 exhibited exceptional photocatalytic activity and reusability during tetracycline photocatalytic degradation process. The rate constant reaches 1.83 × 10 −2 min −1 over TM-0.05, which was 5.3 times and 2.3 times higher than that of sole Ti-MOF and Ti 3 C 2 , respectively. Combined photoelectric characterization confirmed the improved photocatalytic activity was predominantly due to the excellent conductivity of Ti 3 C 2 and the tight interface connection between the two semiconductors, thus accelerating the interfacial charge separation and transport. Scavenger experiments, EPR, and LC-MS analysis confirmed the key role of •O 2 - , •OH and photogenerated holes during tetracycline degradation, and finally a possible mechanism was postulated. This work provides a new approach for constructing MOF/MXene structures via in situ self-assembly strategy, and expand their application in refractory pollutants photocatalytic degradation process.
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Journal of Materials Chemistry C
·
2025
·Vol. 13
·期 10
·4974-4982
·
IF 5.1
Yanyan Duan,Jiangning Li,Biao Wang,Qiong Li,Zhiheng Wu,Jing Mao,Wei Zhang,Guosheng Shao,Yonglong Shen
Lead-free Cs2AgBiBr6 double perovskite solar cells (PSCs) possess unique environment-friendly and stable attributes. However, the wide bandgap of Cs2AgBiBr6 weakens the light capture capability, thus limiting the improvement in power conversion efficiency (PCE) for PSCs. Herein, a convenient and efficient method is presented by incorporating plasmonic Ag nanoparticles (NPs) onto a perovskite surface. Owing to the synergistic effect of far-field light scattering and near-field enhancement of Ag NPs, the short-circuit current density of the modified PSC is enhanced by approximately 30%. In addition, the introduction of Ag NPs endows a larger Fermi energy level difference between the TiO2/perovskite interface, resulting in a higher open-circuit voltage. The optimized device with the structure of fluorine-doped tin oxide/compact TiO2/mesoporous TiO2/Cs2AgBiBr6/carbon delivers a PCE of 2.69% as compared to the control device with a PCE of 2.04%, which represents one of the highest efficiencies of hole transport layer-free, carbon-based PSCs. Furthermore, the unencapsulated device retains nearly 98% of its initial PCE even after being stored for 32 days at 25 °C and relative humidity of 40 ± 5%. This work provides a new insight into constructing high-efficient and environment-friendly PSCs.
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ACS Nano
·
2012
·
IF 11.421
Sisi Cui,Deyan Yin,Yuqi Chen,Yingfeng Di,Haiyan Chen,Yuxiang Ma,Samuel Achilefu,Yueqing Gu
Two major challenges of current photodynamic therapy (PDT) are the limited tissue penetration of excitation light and poor tumor-selectivity of the photosensitizer (PS). To address these issues, we developed a multifunctional nanoconstruct consisting of upconversion nanoparticles (UCNPs) that transform near-infrared (NIR) light to visible light and a photosensitizer zinc(II) phthalocyanine (ZnPc). Folate-modified amphiphilic chitosan (FASOC) was coated on the surface of UCNPs to anchor the ZnPc close to the UCNPs, thereby facilitating resonance energy transfer from UCNPs to ZnPc. Confocal microscopy and NIR small animal imaging demonstrated the enhanced tumor-selectivity of the nanoconstructs to cancer cells that overexpressed folate receptor. Reactive oxygen species (ROS) generation in cancer cells under a 1-cm tissue was higher upon excitation of UCNPs with the 980 nm light than that with 660 nm irradiation. In vivo PDT treatments for deep-seated tumors demonstrated that NIR light-triggered PDT based on the nanoconstructs possessed remarkable therapeutic efficacy with tumor inhibition ratio up to 50% compared with conventional visible light-activated PDT with a noticeable reduced tumor inhibition ratio of 18%. These results indicate that the multifunctional nanoconstruct is a promising PDT agent for deep-seated tumor treatment and demonstrate a new paradigm for enhancing PDT efficacy.
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JOURNAL OF BIOMATERIALS APPLICATIONS
·
2019
·
IF 2.442
Hui-Chao Lin,Wen-Tian Li,Thushara W Madanayake,Can Tao,Qiang Niu,Si-Qi Yan,Bao-An Gao,Zhao Ping
Current photodynamic therapy faces two major challenges, which are the limited tissue penetration of excitation light and poor tumor selectivity of the photosensitizer. To address these issues, in the present work, a photosensitizer protoporphyrin IX was delivered by aptamer-coated upconversion nanoparticles. The aptamer, namely, AS1411, could fold to G-quadruplex structures with the bi-functions of loading protoporphyrin IX and targeting the cancerous cells. The protoporphyrin IX aptamer-coated upconversion nanoparticle nanospheres exhibited good biocompatibility, high nuclease resistance, and targeted cellular internalization. The receptor blocking experiment indicated that the cellular uptake of protoporphyrin IX aptamer-coated upconversion nanoparticle mainly attributed to the binding of AS1411 to the nucleolin overexpressed on the cancerous cell membrane. Moreover, high-efficient photodynamic therapy of the as-prepared protoporphyrin IX aptamer-coated upconversion nanoparticle nanospheres was achieved to cancerous cells under the irradiation of near-infrared light, which was induced by the upconversion property of the upconversion nanoparticle. These results indicate that the fabricated protoporphyrin IX aptamer-coated upconversion nanoparticle nanoplatform has higher efficiency, lower toxicity, and less side effects compared to the free photosensitizer protoporphyrin IX, and thus is a new promising photodynamic therapy agent especially for the deep-seated tumors.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Cuizhong Zhang,Liya Zhou,Jinyun Peng
The sensitive, selective, and accurate analysis of kanamycin (KAN), a common aminoglycoside antibiotic, is vital to ensure human health and food safety. Here, a well-designed photoelectrochemical (PEC) KAN aptasensor was proposed based on the synergistic strategy by Schottky junction and sensitization. A Schottky junction of CuO/Pd nanocomposite was used as a PEC substrate to immobilize an aptamer. The Schottky barrier not only provided an electron-transfer irreversible passage from CuO to Pd shell but also generated a local surface plasmon resonance between CuO and Pd shell, thus improving the efficient charge separation and light absorption. Complementary-DNA-functionalized CdS quantum dots (CdS QDs) were introduced onto the surface of CuO/Pd via hybridization of the target aptamer to improve the response of the PEC aptasensor further. When CdS was close to Pd shell, the Fermi energy level of CdS was readjusted under the action of the sensitization. The photogenerated hot electrons on the conduction band of CdS were transferred into Pd by a powerful interfacial electric field. Upon blue-light irradiation, the change of photocurrent depended upon the amount of stored negative charge on the surface of the Pd shell and stored positive charge on the valence band of CdS before and after incubation with KAN. Using the photocurrent change as a response signal for the quantitative detection of KAN, the PEC aptasensor exhibited a low detection limit of 20 pM with a wide linear range of 0.1–500 nM. Thus, the developed PEC aptasensor has great potential for applications in various fields.
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