光诱导CsPbCL纳米晶卤素交换UVC剂量计研究

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关键词：钙钛矿纳米晶；可视化传感；UVC剂量计；卤素交换中图分类号：0482.31 文献标识码：ADOI：10.37188/CJL.20250248 CSTR：32170.14.CJL.20250248

UVCDosage Monitoring Based on Light-driven Halide Exchange in CsPbCl，Nanocrystals

KONG Lingnan 1† ，CHEN Liming2†，RUAN Minyi2*，CHEN Bisang1，LI Wanting1，LI Feiming↓

（1.CollegeofChemistry，ChemicalEngineringandEnironment，MinnanNormalUniversity，Zhangzhou363oohin; 2.ZhangzhouAffiliatedHospitalofFujianMedicalUniversity，Zhangzhou 363ooo，China） * Corresponding Authors，E-mail：zzsyyrmy2018@126.com;lfm1914@mnnu.edu.cn

Abstract：This study presents a visual Ultraviolet C（UVC）dosimeter based on the photo-driven halide exchange of CsPbCl 3 perovskite nanocrystals（PNCs）． The system leverages the UVC（254nm）-induced debrominationof hexabromocyclododecane （HBCD）to release bromide ions（B ），which subsequently undergo an anion exchange reaction with CsPbCl 3 PNCs.Thisprocess forms mixed-halide CsPbClB 13-x PNCs，resulting in a distinct fluorescence color shift from dark purple to light green undera 365 nm lamp.The fabricated CsPbCl3/HBCD@PMMA composite film is low-cost and highlysensitive，enabling rationetric and visual monitoring of UVC dose within the range of 0-1.092J/cm².Thisoperationalrangeefectivelycovers the typical dosagerequiredfor hospital disinfection （0.159-1.O68J/cm²）.Our work provides afacile，reliable，and intuitive strategy for monitoring UVC irradiation， demonstrating significant potential for practical applications in sterilization equipment validation.

Keywords： perovskite nanocrystals；visual sensing；UVC dosimeter;halide exchange

1引言

重大全球性风险之一，且一直是引发大规模流行病的关键角色[1]。（剩余13971字）