SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.8
Mengjiao Pang,Yanjie Wang,Zengcheng Du,Qiqing Chen,Wenhao Liu,Miaoduo Deng,Yuanyuan Xie,Mingfang Zhu
In this study, a water-soluble perovskite quantum dot (PQDs) based on CsPbI 3 "on-off-on" fluorescent probe was successfully constructed. The probe exhibits red fluorescence emission at 660 nm under 465 nm excitation, and the response mechanism of Cu 2+ -induced fluorescence quenching (OFF) and D-penicillamine (D-PA) triggered fluorescence recovery (ON) is realized. In addition, the dual target detection platform of both copper ions (Cu 2+ ) and D-PA was established. Quantitative analysis showed that the detection linearity range was 0.5–15 μM (LOD = 0.21 μM) for Cu 2+ and 0.4–60 μM (LOD = 16.7 nM) for D-PA. Meanwhile, D-PA can be semi-quantitatively measured based on the change in solution color. The fluorescent probe provides a fast response time, high sensitivity, and convenient solution for real-time detection of Cu 2+ and D-PA. And it was applied in the determination of D-PA in serum samples with satisfactory results. It is particularly noteworthy that the synthesized perovskite quantum dots exhibit excellent stability in the aqueous environment, which provides a new strategy for expanding the application of perovskite materials in the field of biomedical analysis.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 19.7
Qi Qin,Cheng-Yi Huang,Zhi-Hua Xia,Wei-Qi Liu,Hong-Yan Chen,Dai-Bin Kuang
Rational modulation of interfacial electronic structure has been regarded as an appealing strategy to achieve effective charge separation and synergistic active-site cooperation in heterojunction photocatalysts, yet it remains a significant challenging. In this study, two-dimensional (2D) vinylene-linked conjugated covalent organic polymer (COP) functionalized with –F and –CN groups was designed through Knoevenagel condensation reaction. The influence of these groups on the interfacial properties and the photocatalytic performances of Cs 3 Sb 2 Br 9 /COP heterojunction were investigated systematically. Combined experimental and theoretical calculations revealed that introducing strong electron-withdrawing groups improves charge separation by inducing strong electron delocalization within the COP framework, enhances CO 2 adsorption and activation, and most importantly, significantly facilitates the interfacial growth of Cs 3 Sb 2 Br 9 nanocrystals. It was found that the strengthened interfacial interaction via Sb─N bonding effectively promoted a fast Z-scheme charge transfer and enabled effective spacial separation of photoelectron and holes, in contrast to the type II mechanism observed in the un-functionalized heterojunction. This enables effective multifunctional collaboration of Cs 3 Sb 2 Br 9 and FN-COP. Consequently, the optimized Cs 3 Sb 2 Br 9 /FN-COP heterojunction achieved a total electron rate of 135.42 µmol·g -1 ·h -1 for CO 2 reduction coupled with a benzaldehyde production rate of 179.73 µmol·g -1 ·h -1 , representing a 2.4 and 2.6-fold enhancement over the un-functionalized heterojunction. This work demonstrates a novel "molecular engineering–interface modulation–function cooperation" strategy to construct high-quality heterojunction precisely, providing valuable insights for the design of high-performance photocatalysts for next-generation energy conversion applications.
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Journal of Materials Chemistry C
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2026
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IF 5.1
Jing Li,Xue Jiang,Lingfeng Qiu,Tianze Wen,Jinju Zheng,Jialong Zhao,Bingsuo Zou,Zhentao Du
All-inorganic perovskites hold great potential for applications in photodetectors due to their high absorption coefficient and excellent charge transport properties. However, they still face challenges such as high defect densities and insufficient stability. In this work, we successfully synthesized high-purity, high-crystallinity CsPbBr3 nanobelts via a hot-injection method with the introduction of the short-chain ligand octylamine. The as-prepared CsPbBr3 nanobelts can remain stable in air for more than 8 weeks. The photodetector constructed based on CsPbBr3 nanobelts exhibits excellent performance, with a responsivity, detectivity, and external quantum efficiency of 100.72 A W−1, 6.01 × 1013 Jones, and 3.34 × 104%, respectively, which are comparable to the best one-dimensional (1D) CsPbBr3 photodetectors reported to date. This study provides insights and guidance for the preparation of high-quality 1D CsPbBr3 nanomaterials and the development of high-performance ultraviolet devices.
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Journal of Materials Chemistry C
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2026
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IF 5.1
Yuting Bai,Wenxin Tang,Zunxian Yang,Yue Chen,Luxi Yuan,Jie Li,Xudong Jiang,Jiajie Hong,Benfang Liu,Zheyu Zhou,Runsen Yu,Wenxin Zhang,Shangwei Ye,Zhiqian Wei,Zhezhou Fang,Jinzhu Gao,Zhiyu Yuan,Shunchang Cheng,Yuhan Meng,Zhiqi Lin,Tailiang Guo,Zhenzhen Weng,Yongyi Chen
Perovskite quantum dots (PeQDs) have attracted increasing attention for light-emitting diode applications owing to their excellent optoelectronic properties. However, they possess many crystalline defects, leading to degradation of their emissive performance, which is mainly attributed to ligand desorption from the surface of the quantum dots during their purification with polar solvents. Here, the influence of post-treatment strategies on the performance of PeQDs was systematically investigated, and further, a dual-site anchoring strategy based on the zwitterionic molecule 3-NDS is proposed to stabilize their dynamic surface. In terms of systematic experiments and theoretical calculations, the mechanism of ligand rearrangement on the surface of the quantum dots during their purification is elucidated. 3-NDS, by means of strong anchoring through its (CH2)2N(CH3)+ and SO3− functional groups, substantially reduces surface defects in quantum dots and the corresponding perovskite quantum dot light-emitting diodes (PeLEDs). Their electroluminescent performance was significantly improved, with their external quantum efficiency increasing to 12.05% and their turn-on voltage reduced to 2.5 V. These QLEDs exhibit excellent optoelectronic characteristics and provide new insights into surface ligand design criteria for tuning the surface chemistry of PeQDs. This optimisation is essential for improving the efficiency of QLEDs and other optoelectronic devices.
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Nature Communications
·
2026
·Vol. 17
·期 1
·1909
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IF 15.7
Yang Bin,Li Deyang,Deng Renren,Zhao Jian,Wang Yubin,Xu Shiqing,Lei Lei
Persistent luminescence materials are promising for night-vision displays, background-free medical diagnostics, and high-resolution radiography, yet achieving efficient violet, yellow, and red emission within a single robust and scalable host remains a longstanding challenging. Here, we overcame this limitation by constructing Gd 3+ -mediated cluster traps within alkaline-earth fluorochlorides to minimize energy loss during electron migration. These clusters serve as both intrinsic emitters and efficient energy transfer platforms for various activators, including Eu 2+ , Sm 2+ , Tb 3+ , and Mn 2+ , enabling bright and spectrally tunable multicolor persistent luminescence upon X-ray irradiation. The persistent luminescence intensity of Eu 2+ is enhanced by up to 32.7-fold upon Gd 3+ codoping. Moreover, violet persistent luminescence from Eu 2+ is employed to excite perovskite quantum dots for full-color time-domain dynamic displays, while Sm 2+ emission facilitates low-dose, high-resolution delayed X-ray imaging. These findings establish a generalizable strategy for designing efficient multicolor persistent materials for advanced multifunctional optical technologies.
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PubMed
高影响因子
Small
·
2026
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IF 12.1
Zhiting Jiang,Yanyan Gao,Qiuping Ding,Yanmin Yang,Leipeng Li
Optically stimulated luminescence (OSL) materials can convert trapped charge carriers into light under controllable light stimulation, thus holding great promise for diverse applications such as radiation dose detection and anti-counterfeiting. Nevertheless, previous OSL signals are located in the visible or near-infrared regions, overlapping seriously with the ambient light and thus hindering the application potential. Herein, we report a type of double perovskite structured phosphor, Cs 2 NaYF 6 :Pr 3+ , capable of emitting ultraviolet-C (UVC) OSL. Upon X-ray irradiation, Cs 2 NaYF 6 :Pr 3+ can store the excitation energy in terms of trapped charge carriers. In addition, it exhibits strong and persistent UVC luminescence under continuous light stimulation over a wide wavelength range or heating. By investigating the wavelength-dependent stimulated luminescence phenomenon and trap-clearing capability, we elaborate on the influence of excitation wavelength on UVC OSL. Leveraging the luminescent properties of Cs 2 NaYF 6 :Pr 3+ , we further demonstrate its potential application in tracking and marking in bright environments when exposed to sunlight irradiation. This work clarifies the generation mechanism of UVC OSL and its dependence on stimulation wavelength, thereby providing insights for the exploration of more UVC OSL materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Zhen Wu,Xin Zhang,Yiyuan Tang,Wenzhao Wang,Qiming Zou,Lvming Qiu,Jiani Liu,Bin Hu,Min Gong,Guojie Wang
Smart fluorescent materials with tunable fluorescence in response to external stimuli are of great interest for anti-counterfeiting applications. Herein, we develop a photoresponsive fluorescent material (PRFM) SPD-CsPbBr 3 @PMMA that integrates perovskite CsPbBr 3 with photochromic spiropyran (SPD) in poly(methyl methacrylate) (PMMA), exhibiting multimode fluorescence outputs for advanced anti-counterfeiting applications. The blue-excitable CsPbBr 3 nanocrystals enable SPD-CsPbBr 3 @PMMA a stable green fluorescence at 450 nm excitation wavelength. Ultraviolet light irradiation of SPD-CsPbBr 3 @PMMA induces the isomerization of SPD from closed-ring to open-ring form and subsequently gives a stable red fluorescence. Fluorescence decay spectra and theoretical calculations indicate that an efficient energy transfer occurs from CsPbBr 3 to the open-ring SPD, thereby leading to significant changes in fluorescence. Upon irradiation with visible light (400–750 nm), SPD is reverted to closed-ring form, accompanied by the restoration of green fluorescence. SPD-CsPbBr 3 @PMMA can exhibit complex and tunable fluorescence changes under room light, blue light, and ultraviolet light modes, making it exceptionally suited for anti-counterfeiting applications. A novel strategy for information anti-counterfeiting by combining SPD-CsPbBr 3 @PMMA with Morse code and other innovative anti-counterfeiting platforms have been successfully developed. Overall, this study introduces an innovative approach to constructing multimode PRFMs, elucidates the design principles underlying fluorescence-tunable perovskite, and inspires further development in advanced anti-counterfeiting materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.7
Wanying Zhang,Kaihuai Zhuo,Jie Chen,Tongtong Wang,Xuanyang He,Mengjie Li,Weilin Gao,Yiran Zhao,Xue Yang,Zhuoyin Peng,Xiaoyu Zhang,Yingwei Wang,Keqiang Chen,Guogang Li
Surface ligands are crucial for perovskite quantum dot (PQD) optoelectronics. However, long alkyl chains limit charge transport, while short chains destabilize their soft lattice, presenting a stability–mobility dilemma. Moreover, surface-bound protonated primary amines are susceptible to deprotonation, accelerating performance decay and structural collapse. In this work, we introduced tetrabutylphosphonium bromide (TBPB) as a surface passivation ligand to overcome these limitations. TBPB combines minimal molecular polarity—enabling a short chain for superior charge transport—with a fully coordinated phosphonium center that resists deprotonation and passivates halogen vacancies. This yields quantum dots with near-unity PLQY and robust stability, leading to LEDs achieving a maximum external quantum efficiency (EQE) of 24.28% and luminance of 122,786 cd m −2 , far surpassing control devices. Further shortening the ligand chain increases EQE to 27.89% but at the cost of severe luminance loss, underscoring the delicate balance in ligand engineering.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Ruoxuan Guo,Liping Song,Wencheng Yao,Yingzhong Huo,Lu Wang,Yang Liu,Yuejie Ai,Xiangke Wang
Rational design and synthesis of stable and efficient photocatalysts for selective U(VI) capture in water remains a great challenge due to the complicated water environment. Herein, considering the synergistic interaction between anthraquinone (−AQ, electron acceptor) and methoxy (–OCH 3 , electron donor), a series of ternary donor-acceptor-acceptor (D-A1-A2) covalent triazine frameworks named as OCH 3 (x)-AQ(y) (x and y represent different content ratios) were rationally designed and synthesized via molecular regulation. This work not only constructed a directional charge-transfer pathway, but also greatly improved the utilization efficiency of photogenerated electrons in OCH 3 (x)-AQ(y) framework, which was also further verified by density functional theory (DFT) calculations. Finally, OCH 3 (2)-AQ(3) could reach nearly 100% removal efficiency of U(VI) within 240 min under visible light irradiation in air. Meanwhile, OCH 3 (2)-AQ(3) showed an extremely high distribution coefficient (K d , 1.07 × 10 6 mL·g −1 ) for U(VI) under multicomponent ion competition and further performed high removal efficiencies (>98%) in real water environments, such as seawater and groundwater. Importantly, the machine learning results also demonstrated that the structural characteristics would greatly influence the catalytic performance of CTF catalysts. The component tuning of donor-acceptor groups achieved synergistic effects in stepwise charge transport and target-selective site accessibility, which offered an effective photocatalytic strategy for U(VI) extraction in complex water environment.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Yiyuan Peng,Zequn Ma,Ting Chen,Qifei Xia,Renjie Zhou,Zhixiang Xie,Chunxian Guo
CsPbX 3 (X = Cl, Br, I) all-inorganic perovskite nanocrystals (NCs) are a class of rapidly developing new optoelectronic materials. By virtue of their excellent luminescent properties, they have found wide application in optoelectronic devices including light-emitting diodes (LEDs), solar cells, and micro/mini-LEDs. Covalent Organic Framework (COF) coating effectively addresses the issue of insufficient stability, while it suffers from small pores and low coating efficiency. Thus, cetyltrimethylammonium bromide (CTAB) and 1, 3, 3, 5-tetramethylbenzene (TMB) were employed as swelling restrictors, and a hierarchical microporous channel structure was constructed in the COF material. CsPbBr 3 NCs was synthesized in situ through room temperature supersaturation recrystallization, forming CsPbBr 3 @TC-COF composite materials. Therefore, the COF material's pore size expanded to a layered structure ranging from 10 to 20 nm, preventing the aggregation and quenching of nanocrystals, thus enhancing the photoluminescence quantum yield (PLQY) and stability of CsPbBr 3 NCs. Specifically, the PLQY of CsPbBr 3 @TC-COF composites increased significantly from 37.71% for pristine CsPbBr 3 to 90.35%. Even after 30 days of storage at room temperature, CsPbBr 3 @TC-COF composites maintained 53.26% of their initial PL intensity, compared to 22.41% for the pristine CsPbBr 3 NCs. Additionally, they exhibited excellent stability in several polar solvents. Ultimately, through the integration of CsPbBr 3 @TC-COF composites, K 2 SiF 6 :Mn 4+ (KSF) red powder, and blue LEDs, a white LED (WLED) device was successfully fabricated. The device has an efficiency of 33.89 lm W −1 and a correlated color temperature (CCT) of 4036 K, indicating that this composite material is highly likely to be an ideal choice for next-generation lighting and display technologies.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Penghao Zhu,Guang Zheng,Kaili Gao,Duoxia Xu,Xiaohua Nie,Yuanchao Lu,Guijie Hao,Xianghe Meng
Size and shape critically influence the optical properties of CsPbBr 3 NCs, but lack sufficient research in sensing. Herein, particle sizes and shapes of CsPbBr 3 NCs were precisely adjusted by room-temperature synthesis method, and sensing performances to peroxide value (PV) of edible oils were investigated. The results found that the particle sizes (4.3 ± 0.2, 6.3 ± 0.2, 8.8 ± 0.3, and 12.9 ± 0.6 nm) of high-crystallized cubic CsPbBr 3 NCs were precisely obtained, and the fluorescence (from 491 to 516 nm) and absorption (from 470 to 526 nm) peak wavelengths redshifted as the particle size increased from 4.3 nm to 12.9 nm. Among four particle sizes, CsPbBr 3 NCs (8.8 nm) demonstrated the optimal sensing performance (wavelength-shifted colorimetric method R 2 = 0.99) for PV detection, achieving a linear response range of 0.02–0.36 g/100 g with LOD of 0.0022 g/100 g and LOQ of 0.0073 g/100 g. Considering the interference from trace moisture in edible oil, a moisture-compensated intensity-quenched colorimetric method was proposed to improve the practical accuracy, with the practical recovery rates from 95%–245% to 90%–119%. Therefore, the proposed methods had good sensitivity, accuracy and practicability, and enlightened the effective technologies for the quality detection of edible oil.
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2026
·
IF 4.6
Feng Tong,Yi Zhu,Xiuquan Gu,Zheng Chen
Perovskite nanocrystals (PNCs) are promising luminescent materials for display applications owing to their exceptional optoelectronic characteristics. Nevertheless, their practical deployment is hindered by intrinsic high defect densities, which lead to insufficient photoluminescence quantum yields (PLQYs) and accelerated material degradation. In this study, a one-pot strategy was proposed by using nitrogen-doped graphene quantum dots (NGQDs) as surface ligands. Coupled with a polymethyl methacrylate (PMMA) coating, the NGQDs facilitate the formation of a robust composite architecture. Under optimized NGQD incorporation, the fabricated CsPbBr 3 /NGQDs/PMMA composite films display an ultra-narrow green emission peaked at 522 nm, with a full width at half maximum (FWHM) as narrow as 16 nm. More importantly, the composite exhibits significantly enhanced stability, maintaining 70% of its initial PL intensity after 7 days of water immersion or 1 h of thermal treatment at 100 °C. Such improvements are ascribed to effective defect passivation by the NGQDs and the beneficial role of their nitrogen-rich sites in promoting perovskite crystallization. As a demonstration of their potential, white light-emitting diodes (WLEDs) based on the composite realize a wide color gamut, covering 131% of the NTSC standard and 98% of the Rec. 2020 standard. This work thus proposes a novel one-pot in situ passivation approach, providing an effective route to concurrently address the efficiency and stability issues of PNCs.
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