{"title":"Development of Novel Fluorescent Light-up Pb2+ Sensor Using G-quadruplex Complex with Modified Thioflavin T","authors":"Duyeop Kim, Do Yeon Kim, Ji Hoon Han","doi":"10.1039/d4an01340a","DOIUrl":null,"url":null,"abstract":"We developed a novel, cost-effective fluorescent light-up biosensor for Pb²⁺ detection using a label-free G-quadruplex combined with modified Thioflavin T (ThT) derivatives, utilizing the unique K⁺-Pb²⁺-G-quadruplex conformation. Among them, the T2 G-quadruplex with ThT-E showed the best fluorescence enhancement, validating its high sensitivity and selectivity in real water samples","PeriodicalId":63,"journal":{"name":"Analyst","volume":"19 1","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analyst","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d4an01340a","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
We developed a novel, cost-effective fluorescent light-up biosensor for Pb²⁺ detection using a label-free G-quadruplex combined with modified Thioflavin T (ThT) derivatives, utilizing the unique K⁺-Pb²⁺-G-quadruplex conformation. Among them, the T2 G-quadruplex with ThT-E showed the best fluorescence enhancement, validating its high sensitivity and selectivity in real water samples