Dyes and Pigments最新文献_第8页

Breaking the lifetime-efficiency trade-off in blue organic room-temperature phosphorescence through site-directed boronate engineering 通过定点硼酸工程打破蓝色有机室温磷光的寿命效率权衡

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2025-12-29 DOI: 10.1016/j.dyepig.2025.113534

Dong Ding , Xinyue Xu , Jing Lv , Feng Li , Deyu Liu , Erkin Zakhidov , Mingliang Sun

Organic room-temperature phosphorescent (RTP) materials with tunable lifetimes are of great interest for information display, anti-counterfeiting, and data storage. However, achieving both ultralong lifetimes and high quantum yields, particularly in the blue region, remains challenging due to their inherent trade-off. Herein, a site-dictated strategy is employed by introducing pinacol boronate ester (Bpin) groups at the 1-, 2-, and 4-positions of a carbazole scaffold (CZ1B, CZ2B, and CZ4B), and embedding the resulting phosphors into a poly(vinyl alcohol) (PVA) matrix. All three emitters exhibit visible blue RTP with tunable lifetimes ranging from 3.96 s (CZ1B) to 5.20 s (CZ2B)—among the longest reported—along with high phosphorescence quantum yields (17.94–26.95 %). Combined theoretical and experimental studies reveal that Bpin substitution site affects excited-state characteristics, spin–orbit coupling, and hydrogen-bonding interactions with the PVA host. Notably, CZ2B shows optimal excited-state separation, highest surface electrostatic potential, and strongest hydrogen bonding, leading to superior RTP performance. This study presents a precise structural approach to modulate both phosphorescence lifetime and efficiency, offering valuable insight for the development of long-lived blue RTP materials in advanced optical applications such as data storage and visual encryption.

具有可调寿命的有机室温磷光（RTP）材料在信息显示、防伪和数据存储方面具有重要意义。然而，实现超长寿命和高量子产率，特别是在蓝色区域，由于它们固有的权衡，仍然具有挑战性。本文采用位点决定策略，在咔唑支架（CZ1B、CZ2B和CZ4B）的1-、2-和4-位置上引入吡纳酚硼酸酯（Bpin）基团，并将所得荧光粉嵌入聚乙烯醇（PVA）基质中。所有三种发射体都显示出可见的蓝色RTP，其可调寿命范围从3.96 s （CZ1B）到5.20 s (CZ2B) -在报道的最长寿命中-以及高磷光量子产率（17.94 - 26.95%）。理论和实验相结合的研究表明，Bpin取代位点影响了PVA宿主的激发态特性、自旋轨道耦合以及与PVA宿主的氢键相互作用。值得注意的是，CZ2B具有最佳的激发态分离、最高的表面静电势和最强的氢键，从而具有优异的RTP性能。本研究提出了一种精确的结构方法来调节磷光寿命和效率，为在数据存储和视觉加密等先进光学应用中开发长寿命蓝色RTP材料提供了有价值的见解。

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引用次数: 0

Multifunctional application of a sulfadiazine azo dye as electrochemical sensor, corrosion inhibitor, and forensic imaging agent 磺胺嘧啶偶氮染料作为电化学传感器、缓蚀剂和法医成像剂的多功能应用

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2025-12-24 DOI: 10.1016/j.dyepig.2025.113503

Sneha Parameshwarappa , Keerthikumar T. Chinnagiri , Ramyakumari T. Chinnagiri , Raghavendra M. Thippandegowdru

This study reports the development of a novel electrochemical sensor for the simultaneous determination of paracetamol (PR) and tryptophan (TR) using a carbon paste electrode modified with a synthesized sulfadiazine-resorcinol azo dye (SRAD). The SRAD compound was synthesized via a diazo coupling reaction and its molecular structure was confirmed using spectroscopic techniques. Electrochemical characterization demonstrated that the sulfadiazine-resorcinol azo dye modified carbon paste electrode (SRAD/MCPE) exhibits good performance for the concurrent quantification of PR and TR. The sensor achieved low limits of detection (7.9 μM for PR and 4.11 μM for TR), along with good Repeatability and stability. Operational parameters such as pH, scan rate, and interference effects were systematically optimized. In parallel, SRAD exhibited significant corrosion inhibition efficiency for mild steel in acidic media, functioning as good inhibitor with spontaneous Langmuir adsorption behavior. Surface analysis via SEM validated the protective film formation. Furthermore, the utility of SRAD was extended to forensic science, where the dusting method successfully visualized Level I and II latent fingerprint features under both normal and UV illumination.

本研究采用合成磺胺嘧啶-间苯二酚偶氮染料（SRAD）修饰碳糊电极，建立了一种同时测定扑热息痛（PR）和色氨酸（TR）的电化学传感器。通过重氮偶联反应合成了SRAD化合物，并利用光谱技术对其分子结构进行了确证。电化学表征表明，磺胺嘧啶-间苯二酚偶氮染料修饰碳膏电极（SRAD/MCPE）具有良好的同时定量PR和TR的性能，该传感器具有较低的检出限（PR为7.9 μM， TR为4.11 μM），具有良好的重复性和稳定性。系统优化了pH、扫描速率、干扰效果等操作参数。同时，SRAD在酸性介质中对低碳钢表现出明显的缓蚀效果，是一种良好的缓蚀剂，具有自发的Langmuir吸附行为。SEM表面分析证实了保护膜的形成。此外，SRAD的应用还扩展到法医科学，在常规和紫外线照射下，该方法成功地可视化了I级和II级潜在指纹特征。

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引用次数: 0

Black photochromic smart windows for dynamic light and thermal regulation 黑色光致变色智能窗，用于动态光和热调节

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2026-01-06 DOI: 10.1016/j.dyepig.2026.113562

Zhen Du , Jiangpeng Li , Yan Zhang , Yonghua Qin , Zongming Tian , Guojian Yang

Black photochromic (PC) smart windows, with their exceptional optical and thermal regulation capabilities, have received significant attention in the field of PC smart windows. However, due to the solid confinement effect, the transmittance and response speed cannot be compatible, and to the best of our knowledge, pure black PC smart windows are rarely reported. In this study, we develop a black PC smart window based on a photoacid/acidochromic dye system by incorporating a plasticizer (PEG400) into a rigid PMMA matrix. Through ingenious design, the smart window maintains the high transmittance of PMMA while overcoming the solid confinement effect, successfully achieving a PC smart window with rapid response speed (color within 30 s at room temperature, bleach within 1 min at 100 °C or 3 h at room temperature). Moreover, it exhibits high optical contrast (ΔT = 80 %, 595 nm), good cycling stability (>40 cycles at thermal erasing, >60 cycles at room temperature erasing), and spectrally tunable properties (enabling yellow, red, blue, cyan and black states). Through systematic experimental investigations, the mechanism by which PEG400 enhances photo-response speed has been elucidated. Finally, we demonstrate the practical application of this material as a smart window under various weather conditions. This work not only expands the color options (switch between yellow and black) for PC smart windows, but also provides new insights for designing other stimulus-responsive smart windows.

黑色光致变色（Black photochromic， PC）智能窗以其优异的光学和热调节能力在PC智能窗领域备受关注。然而，由于固体约束效应，透光率和响应速度无法兼容，据我们所知，纯黑色的PC智能窗很少有报道。在这项研究中，我们通过在刚性PMMA基体中加入增塑剂（PEG400），开发了一种基于光酸/酸致变色染料体系的黑色PC智能窗口。智能窗通过巧妙的设计，在保持PMMA高透光率的同时，克服了固体约束效应，成功实现了响应速度快的PC智能窗（室温下30秒内上色，100℃下1分钟内漂白，室温下3小时）。此外，它具有高光学对比度（ΔT = 80%, 595 nm），良好的循环稳定性（热擦除>；40周期，室温擦除>；60周期）和光谱可调特性（实现黄色，红色，蓝色，青色和黑色状态）。通过系统的实验研究，阐明了PEG400提高光响应速度的机理。最后，我们展示了这种材料作为智能窗户在各种天气条件下的实际应用。这项工作不仅扩展了PC智能窗口的颜色选择（黄黑切换），而且为设计其他刺激响应智能窗口提供了新的见解。

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引用次数: 0

Enhancing photochromic properties of triphenylethylene derivatives via the modulation of intermolecular interactions 通过调节分子间相互作用增强三苯基乙烯衍生物的光致变色性能

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2026-01-11 DOI: 10.1016/j.dyepig.2026.113565

Mingyao Shen , Jiamin Wu , Simin Zhang , Jindou Zou , Yi Zhou , Heyang Li , Tao Yu

Organic photochromic materials undergo reversible color changes upon exposure to specific wavelengths of light and have found numerous applications, including photoswitches and information storage. Triarylethylene derivatives are a promising class of organic photochromic systems due to their simple synthesis and impressive performance. However, the relationships between the construction of intermolecular interactions and photochromic properties remain unclear. Herein, three triarylethylene derivatives with different electron-withdrawing groups, namely TrPE-o-Ph, TrPE-o-PhF, and TrPE-o-PhCF₃, were designed and synthesized. Detailed photochromic studies show that all three compounds display rapid photoresponse, high photobleaching rates, and good fatigue resistance in both crystalline and amorphous powders. Notably, TrPE-o-PhCF₃ demonstrates superior saturated absorption and much longer thermal decoloration time compared to the other two derivatives. Single-crystal analysis shows that TrPE-o-PhCF₃ adopts two distinct conformations in the packing patterns, with unique dimers formed via C–H⋯F intermolecular hydrogen bonds, providing increased space for conrotatory cyclization and stability of the closed form during coloration. This design strategy of modulating intermolecular interactions to enhance photochromic properties offers a new approach to developing advanced triarylethylene photochromic materials.

有机光致变色材料在暴露于特定波长的光时发生可逆的颜色变化，并已发现许多应用，包括光开关和信息存储。三芳烯衍生物合成简单，性能优异，是一类很有前途的有机光致变色体系。然而，分子间相互作用的构建与光致变色性能之间的关系尚不清楚。本文设计并合成了三种具有不同吸电子基团的三芳基乙烯衍生物TrPE-o-Ph、TrPE-o-PhF和TrPE-o-PhCF3。详细的光致变色研究表明，这三种化合物在结晶和非晶粉末中都表现出快速的光响应、高的光漂白率和良好的抗疲劳性能。值得注意的是，与其他两种衍生物相比，TrPE-o-PhCF3具有更好的饱和吸收和更长的热脱色时间。单晶分析表明，TrPE-o-PhCF3在填充模式中采用两种不同的构象，通过C-H⋯F分子间氢键形成独特的二聚体，为控制环化提供了更大的空间，并在着色过程中保持了封闭形式的稳定性。这种调节分子间相互作用以增强光致变色性能的设计策略为开发先进的三芳基乙烯光致变色材料提供了新的途径。

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引用次数: 0

Portable fluorescent probe for on-site visual detection and quantification of hydrazine and viscosity in environmental and food samples 便携式荧光探针用于环境和食品样品中肼和粘度的现场目视检测和定量

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2026-01-09 DOI: 10.1016/j.dyepig.2026.113564

Sha Li, Yaqi Li, Qianqian Lin, Wei Wen, Xinyu Xu

Hydrazine (N₂H₄) is a highly toxic and carcinogenic pollutant commonly found in industrial wastewater, agricultural runoff, and contaminated soil, posing serious risks to ecosystems and human health. Here, we introduce a novel ratiometric fluorescent probe (SO) for quick, selective, and visual detection of N₂H₄ in complex environmental amples. The probe demonstrates an ultra-sensitive red-to-blue fluorescence shift (from 626 nm to 472 nm) when reacting with N₂H₄ through a nucleophilic addition and cleavage mechanism, with a detection limit of 24 nM. Because of the presence of molecular rotors, SO shows a good linear relationship with viscosity at 626 nm. To support real-world on-site testing, portable solid-state test strips and cotton swabs were created by loading SO onto filter paper and cotton materials. These devices displayed noticeable color changes visible to the naked eye within 1 min. Its practical use has been confirmed with real environmental samples. Rapid and sensitive visual detection of N₂H₄ was performed in various water sources, soil samples, plant tissues (such as bean sprouts and leaves). In addition, the sensing platform was successfully extended to monitor food freshness by detecting spoilage related volatile biogenic amines and to develop smart gloves for tactile contamination screening. This work offers a low-cost, equipment-free, and fast sensing platform for reliable hydrazine monitoring, with strong potential for environmental risk assessments and pollution management.

联氨（N2H4）是一种剧毒致癌物，常见于工业废水、农业径流和污染土壤中，对生态系统和人类健康构成严重威胁。在这里，我们介绍了一种新型的比率荧光探针（SO），用于快速，选择性和视觉检测复杂环境样品中的N2H4。探针通过亲核加成和裂解机制与N2H4反应，呈现出超敏感的红-蓝荧光位移（从626 nm到472 nm），检测限为24 nm。由于分子转子的存在，在626 nm处，SO与粘度呈良好的线性关系。为了支持实际的现场测试，便携式固态测试条和棉签通过将SO加载到滤纸和棉质材料上而制成。这些装置在1分钟内显示肉眼可见的明显颜色变化。其实际应用已通过实际环境样品得到验证。在各种水源、土壤样品、植物组织（如豆芽和叶片）中进行N2H4的快速、灵敏的视觉检测。此外，传感平台成功扩展到通过检测与腐败相关的挥发性生物胺来监测食品新鲜度，并开发了触觉污染筛查的智能手套。这项工作为可靠的肼监测提供了一个低成本、无设备、快速的传感平台，具有很强的环境风险评估和污染管理潜力。

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引用次数: 0

Tunable aggregation-induced emission in π-extended Aroylthiophene–Carbazole emitters π扩展芳基噻吩-咔唑类发射体的可调聚集诱导发射

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2026-01-06 DOI: 10.1016/j.dyepig.2026.113556

Ajeet Kumar Sharma , Panaha , K.R. Justin Thomas , Cheng-Jui Wu , Dian Luo , Shun-Wei Liu , Chih-Hsin Chen

Benzophenone derivatives have gained substantial attention as versatile acceptor cores for developing efficient emissive materials in organic light-emitting diodes (OLEDs). The photophysical properties of these materials can be systematically tuned through the introduction of electron-donating groups, enabling control over fluorescence, thermally activated delayed fluorescence (TADF), or room-temperature phosphorescence (RTP). In this study, we designed and synthesized a new series of aroylthiophene-based emitters containing N-phenylcarbazole (N-PhCbz) donors and various aryl fragments such as naphthyl, anthracene, and pyrene. Theoretical calculations indicate that the large singlet–triplet energy gaps render these systems unfavorable for TADF, yet their emission behaviors are markedly sensitive to aggregation. The naphthyl and pyrene derivatives exhibit aggregation-induced emission enhancement (AIEE) aided by hydrogen bonding which restricts intramolecular rotation (RIR), whereas the anthracene analogue displays aggregation-caused quenching (ACQ). The pyrene derivative shows a distinct, red-shifted absorption and 3.2-fold emission enhancement in 90 % water–THF mixture due to ordered morphology of aggregate, which is supported by SEM analysis and lifetime measurement in different water fractions. All compounds exhibit solvent-dependent emission, showing a linear correlation in the Lippert–Mataga plot, while their high decomposition temperatures (≥317 °C) confirm excellent thermal stability. Non-doped OLEDs fabricated using these emitters demonstrate efficiencies, with the pyrene derivative achieving the highest external quantum efficiency (EQE) of 0.51 %. These results provide valuable insights into the structure–property relationship of aroylthiophene-based emitters and suggest potential for developing aggregation-enhanced emitters for optoelectronic applications.

二苯甲酮衍生物作为多用途的受体核心，在有机发光二极管（oled）中得到了广泛的关注。这些材料的光物理性质可以通过引入给电子基团来系统地调整，从而实现对荧光、热激活延迟荧光（TADF）或室温磷光（RTP）的控制。在这项研究中，我们设计并合成了一系列新的芳基噻吩基发射体，包括n -苯基咔唑（N-PhCbz）给体和各种芳基片段，如萘、蒽和芘。理论计算表明，大的单重态-三重态能隙使得这些系统对TADF不利，但它们的发射行为对聚集明显敏感。萘和芘衍生物在氢键的作用下表现出聚集诱导的发射增强（AIEE），限制了分子内旋转（RIR），而蒽类似物则表现出聚集引起的猝灭（ACQ）。在90%的水-四氢呋喃混合物中，由于聚集体的有序形态，芘衍生物表现出明显的红移吸收和3.2倍的发射增强，这一点得到了SEM分析和不同水组分寿命测量的支持。所有化合物都表现出溶剂依赖性发射，在Lippert-Mataga图中显示出线性相关性，而它们的高分解温度（≥317°C）证实了优异的热稳定性。使用这些发射体制造的非掺杂oled显示出效率，其中芘衍生物达到最高的外量子效率（EQE）为0.51%。这些结果为芳基噻吩基发射体的结构-性能关系提供了有价值的见解，并为开发用于光电应用的聚集体增强发射体提供了潜力。

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引用次数: 0

Investigating the effect of side chain lengths on photovoltaic performance of non-fused ring electron acceptors 研究了侧链长度对非熔合环电子受体光电性能的影响

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2026-01-12 DOI: 10.1016/j.dyepig.2026.113572

Dan He, Nuo Chen, Linwei Xie, Yahui Bai, Zhihui Lin, Qi Ai, Fuwen Zhao

The high synthesis complexity and production costs of organic photovoltaic materials hinder the commercial viability of organic solar cells (OSCs). In this work, two novel non-fused ring electron acceptors (NFREAs), A1C4 and A1C6 with simple molecular structure, were designed and synthesized by short synthetic route. After blended with the polymer electron donor PBDB-T, A1C6 forms a finer phase separation, leading to lower trap density and suppressed charge recombination. Thus, PBDB-T:A1C6 based OSCs exhibit enhanced exciton dissociation and charge transport. Consequently, PBDB-T:A1C6-based OSCs achieve a power conversion efficiency (PCE) of 11.73 %, significantly outperforming A1C4-based devices (9.95 %). Furthermore, ternary OSCs based on D18:L8-BO:A1C6 provide a striking PCE as high as 19.40 %, which is among the highest values for OSCs involving NFREAs. This work indicates that fine-tuning alkyl side-chain length is an effective and easily accessible strategy to optimize the photovoltaic performance of NFREAs, providing a viable pathway toward the commercialization of OSCs.

有机光伏材料的高合成复杂性和生产成本阻碍了有机太阳能电池（OSCs）的商业可行性。本文设计并合成了两种分子结构简单的新型非熔合环电子受体A1C4和A1C6。与聚合物电子给体PBDB-T共混后，A1C6形成了更精细的相分离，从而降低了陷阱密度，抑制了电荷复合。因此，PBDB-T:A1C6基OSCs表现出增强的激子解离和电荷传输。因此，基于PBDB-T: a1c6的OSCs实现了11.73%的功率转换效率（PCE），显著优于基于a1c4的器件（9.95%）。此外，基于D18:L8-BO:A1C6的三元osc提供了高达19.40%的PCE，这是涉及NFREAs的osc的最高值之一。这项工作表明，微调烷基侧链长度是一种有效且易于实现的优化NFREAs光伏性能的策略，为osc的商业化提供了可行的途径。

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引用次数: 0

Coordination–sensitized dual–channel fluorescence of a xylenol orange–based AIE complex for tetracycline detection in food 二甲酚橙基AIE配合物的配位敏化双通道荧光检测食品中四环素

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2026-01-16 DOI: 10.1016/j.dyepig.2026.113579

Yu Li , Qinkun Huang , Huihui Li , Shiyu Li , Jingxuan Han , Dong-Yu Guo , Zhonglin Yu , Qinhe Pan

The tetracycline (TC) residue poses a significant threat to the safety of animal–derived food. Coordination–sensitized luminescence is a common method for detecting TC, but this approach relies on single–channel fluorescence, which is less resistant to interference and causes false detection. To improve detection accuracy, a coordination–sensitized dual–channel fluorescence probe was here developed for TC based on the complex of an AIE dye (xylenol orange, XO) with Zn²⁺. After adding TC to the complex, TC and XO were bridged by the coordination of Zn²⁺ to form a ternary complex. In the ternary complex, the green emission of TC at 520 nm was sensitized owing to the coordination of TC with Zn²⁺, and the red emission of XO at 600 nm was also sensitized because TC limited the rotation of XO. The dual–channel sensing property of the complex exhibited the advantage of the self–validation effect, avoiding false results and improving detection accuracy. The complex also displayed the merits of simple preparation (one–step synthesis at 25 °C), low detection limits (channel 520 nm: 6.7 nM, channel 600 nm: 12.9 nM) and short response times (channel 520 nm:10 s, channel 600 nm: 10 s). The complex was applied to determine TC in milk, honey and pork samples, and combined with a smartphone to facilitate visual dual–channel detection of TC. This work introduces Zn²⁺ and an AIE dye as two coordination–sensitized luminescence sites for dual–channel detection of TC, providing a reliable tool to analyze TC in animal–derived food.

四环素残留严重威胁着动物源性食品的安全。配位敏化发光是检测TC的常用方法，但这种方法依赖于单通道荧光，对干扰的抵抗能力较差，容易导致误检。为了提高检测精度，本文基于AIE染料（二甲酚橙，XO）与Zn2+的配合物，研制了一种配位敏化的双通道荧光探针。在配合物中加入TC后，TC和XO通过Zn2+的配位桥接形成三元配合物。在三元配合物中，由于TC与Zn2+的配位作用，TC在520 nm处的绿色发光被敏化；由于TC限制了XO的旋转，XO在600 nm处的红色发光也被敏化。该配合物的双通道传感特性表现出了自验证效应，避免了假结果，提高了检测精度。该配合物还具有制备简单（25℃一步合成）、检测限低（520 nm通道6.7 nm、600 nm通道12.9 nm）、响应时间短（520 nm通道10 s、600 nm通道10 s）等优点。该配合物应用于牛奶、蜂蜜和猪肉样品中的TC检测，并与智能手机结合，实现了TC的视觉双通道检测。本研究引入Zn2+和AIE染料作为双通道检测TC的两个配位敏化发光位点，为分析动物源性食品中的TC提供了可靠的工具。

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引用次数: 0

Fast fabrication of AIE-active type I photosensitive antibacterial polymer based on photopolymerization 基于光聚合的aie活性I型光敏抗菌聚合物的快速制备

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2026-01-05 DOI: 10.1016/j.dyepig.2026.113555

Shuo Zhao , Qing Wan , Jiacheng Song , Minbo Nie , Xin Chen , Junyuan Li , Chunhui Zhao , Yili Xie , Xin Gan

Advance antibacterial technology of photodynamic therapy (PDT) has received sustained attention due to its significant advantages of the noninvasive characteristic, spatial-temporal control and be free of drug resistance. Photosensitizer (PS) is one of important parts to fabricate outstanding PDT, the existed strategies of achieving satisfactory antibacterial behavior generally adopted small-molecular PS or PS-doped polymeric nanoparticles to kill harmful bacterial, but suffered from the problems of triggering biotoxicity and easy leakage of PS from nanoparticles. Herein, to achieve effective, stable and long-term antibacterial effect but avoiding to appear the leakage and cause biotoxicity from small-molecule PS, we adopted the photocurable technology to prepare quickly bright antibacterial polymeric films by mixing polymeric monomers of designed aggregation-induced emission (AIE) active type I PS and 2-hydroxyethyl methacrylate as well as photo-initiator of 1173. Such obtained polymeric film possessed great stability and negligible dye leakage because of their structural composition was based on the form of chemical covalent bond, which ensured better antibacterial effect because of effective production of type I reactive oxygen species of hydroxyl radical a superoxide anion. This work proposed a new strategy to achieve quick preparation of photodynamic antibacterial polymeric film, showing promising potential of clinical application.

光动力治疗（PDT）的先进抗菌技术因其无创、时空可控、无耐药性等显著优势而受到持续关注。光敏剂（PS）是制备优异PDT的重要组成部分之一，现有的抗菌策略一般采用小分子PS或掺杂PS的聚合物纳米颗粒来杀灭有害细菌，但存在引发生物毒性和PS易从纳米颗粒泄漏的问题。为了达到有效、稳定和长期的抗菌效果，同时避免小分子PS出现渗漏和生物毒性，我们采用光固化技术，将设计的AIE活性I型PS聚合单体与2-甲基丙烯酸羟乙酯以及光引发剂1173混合，制备了快速光亮的抗菌聚合物薄膜。这种聚合物薄膜的结构组成以化学共价键的形式为基础，具有很大的稳定性，可以忽略染料泄漏，并且由于羟基自由基和超氧阴离子的I型活性氧的有效产生，保证了较好的抗菌效果。本研究提出了一种快速制备光动力抗菌高分子膜的新策略，具有广阔的临床应用前景。

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引用次数: 0

Di amine BODIPY and BOPHY as dual sensor of pH and selective to Cu2+ 二胺BODIPY和BOPHY作为pH和Cu2+选择性的双传感器

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments

Pub Date : 2026-05-01 Epub Date: 2025-12-23 DOI: 10.1016/j.dyepig.2025.113521

Tania Mazuelo , Teresa Naranjo , Miguel Gomez-Mendoza , Víctor A. de la Peña O'Shea , Marta Liras

This work reports the synthesis and characterization of two diamino functionalized dyes based on BODIPY and BOPHY, designed as dual optical sensors for pH and metal ions, especially Cu²⁺. Both compounds display environmentally modulated fluorescence, with reversible “on-off” behavior upon changes in pH and metal coordination.

Spectroscopic studies reveal that, in acidic media (pH ≤ 4), both dyes experience a notable increase in fluorescence (up to 25 or 250-times for BODIPY and BOPHY, respectively), along with color changes clearly visible to the naked eye. These effects are accompanied by hypsochromic shifts in the absorption bands, on the order of 30–80 nm, which are attributed to the protonation of the amino groups and the reduction of the pyramidal inversion of nitrogen. Moreover, both compounds display distinct optical responses upon exposure to various metal salts, with BODIPY showing selective and transient fluorescence activation in the presence of copper sulfate under near-neutral conditions. Detailed analyses suggest the formation of three distinct species during the Cu²⁺ interaction: (I) the native dye, (II) a highly fluorescent intermediate complex, and (III) a non-emissive decomposition product. The kinetics and stability of these species were found to be highly dependent on the solvent environment, particularly its protic/aprotic nature.

These findings underscore the potential of these small, structurally simple dyes as efficient dual-function sensors, offering broad applicability in environmental monitoring, biological imaging, and chemical sensing.

本文报道了基于BODIPY和BOPHY的两种二氨基功能化染料的合成和表征，它们被设计为pH和金属离子（特别是Cu2+）的双光学传感器。这两种化合物都显示环境调制荧光，在pH和金属配位变化时具有可逆的“开-关”行为。光谱研究表明，在酸性介质（pH≤4）中，这两种染料的荧光都显著增加（BODIPY和BOPHY分别高达25倍或250倍），并伴有肉眼可见的颜色变化。这些效应伴随着30-80 nm吸收带的次变色，这是由于氨基的质子化和氮的锥体反转的减少。此外，这两种化合物在暴露于各种金属盐时显示出不同的光学响应，其中BODIPY在近中性条件下在硫酸铜存在下显示出选择性和瞬态荧光激活。详细分析表明，在Cu2+相互作用过程中形成了三种不同的物质：(I)天然染料，（II）高荧光中间配合物，（III）非发射分解产物。这些物种的动力学和稳定性高度依赖于溶剂环境，特别是其质子/非质子性质。这些发现强调了这些结构简单的小染料作为高效双功能传感器的潜力，在环境监测、生物成像和化学传感方面具有广泛的适用性。

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