Qingmiao Mu, Jia Li, Hongxi Gu, Lijun Ren, Juan Du, Hualei Cheng and Dengwei Hu
{"title":"用于高效紫外检测和双模防伪的可光开关WO₃ ̄ₓQDs/Cu NCs复合薄膜","authors":"Qingmiao Mu, Jia Li, Hongxi Gu, Lijun Ren, Juan Du, Hualei Cheng and Dengwei Hu","doi":"10.1039/D5DT00440C","DOIUrl":null,"url":null,"abstract":"<p >Photoswitchable fluorescent materials (PFMs) have attracted considerable attention owing to their intrinsic advantages of non-contact operation, cleanliness, and non-invasiveness. Conventional PFMs always require complicated preparation processes with poor fluorescence switching properties, which are affected by the Föster resonance energy transfer (FRET) or photoinduced electron transfer (PET) mechanism. Herein, WO<small><sub>3−<em>x</em></sub></small> QD/Cu NC composite films were prepared on different substrates <em>via</em> a solution casting method and display outstanding fluorescence switching properties owing to the super photochromic performance of WO<small><sub>3−<em>x</em></sub></small> QDs and aggregation-induced fluorescence of Cu NCs. The composite film exhibits reversible on/off switchable fluorescence under UV light irradiation and heat treatment based on the inner filter effect (IFE) mechanism. The composite film shows dynamic variations in dual-mode signals, and the applications of UV sensing and anti-counterfeiting are analyzed. Sensitive dual-mode detection is achieved in UV sensing, particularly for UVB. The composite film exhibits a dual-modal imaging capability with good reproducibility and high resolution for security information encryption and anti-counterfeiting. This work provides a novel strategy for fabricating advanced PFMs for multiple optical applications.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" 19","pages":" 7899-7905"},"PeriodicalIF":3.3000,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photoswitchable WO3−x QD/Cu NC composite films for efficient UV detection and dual-mode anticounterfeiting†\",\"authors\":\"Qingmiao Mu, Jia Li, Hongxi Gu, Lijun Ren, Juan Du, Hualei Cheng and Dengwei Hu\",\"doi\":\"10.1039/D5DT00440C\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Photoswitchable fluorescent materials (PFMs) have attracted considerable attention owing to their intrinsic advantages of non-contact operation, cleanliness, and non-invasiveness. Conventional PFMs always require complicated preparation processes with poor fluorescence switching properties, which are affected by the Föster resonance energy transfer (FRET) or photoinduced electron transfer (PET) mechanism. Herein, WO<small><sub>3−<em>x</em></sub></small> QD/Cu NC composite films were prepared on different substrates <em>via</em> a solution casting method and display outstanding fluorescence switching properties owing to the super photochromic performance of WO<small><sub>3−<em>x</em></sub></small> QDs and aggregation-induced fluorescence of Cu NCs. The composite film exhibits reversible on/off switchable fluorescence under UV light irradiation and heat treatment based on the inner filter effect (IFE) mechanism. The composite film shows dynamic variations in dual-mode signals, and the applications of UV sensing and anti-counterfeiting are analyzed. Sensitive dual-mode detection is achieved in UV sensing, particularly for UVB. The composite film exhibits a dual-modal imaging capability with good reproducibility and high resolution for security information encryption and anti-counterfeiting. This work provides a novel strategy for fabricating advanced PFMs for multiple optical applications.</p>\",\"PeriodicalId\":71,\"journal\":{\"name\":\"Dalton Transactions\",\"volume\":\" 19\",\"pages\":\" 7899-7905\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-04-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Dalton Transactions\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/dt/d5dt00440c\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/dt/d5dt00440c","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Photoswitchable WO3−x QD/Cu NC composite films for efficient UV detection and dual-mode anticounterfeiting†
Photoswitchable fluorescent materials (PFMs) have attracted considerable attention owing to their intrinsic advantages of non-contact operation, cleanliness, and non-invasiveness. Conventional PFMs always require complicated preparation processes with poor fluorescence switching properties, which are affected by the Föster resonance energy transfer (FRET) or photoinduced electron transfer (PET) mechanism. Herein, WO3−x QD/Cu NC composite films were prepared on different substrates via a solution casting method and display outstanding fluorescence switching properties owing to the super photochromic performance of WO3−x QDs and aggregation-induced fluorescence of Cu NCs. The composite film exhibits reversible on/off switchable fluorescence under UV light irradiation and heat treatment based on the inner filter effect (IFE) mechanism. The composite film shows dynamic variations in dual-mode signals, and the applications of UV sensing and anti-counterfeiting are analyzed. Sensitive dual-mode detection is achieved in UV sensing, particularly for UVB. The composite film exhibits a dual-modal imaging capability with good reproducibility and high resolution for security information encryption and anti-counterfeiting. This work provides a novel strategy for fabricating advanced PFMs for multiple optical applications.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.