维普中文期刊产品整合服务

Water-soluble boron carbon oxynitride dots with excellent solid-state fluorescence and ultralong room-temperature phosphorescence

查看全文 作　　者：Shenghui [1]Han;Gang [1]Lian;Xiaoliang [2]Zeng;Zhaozhen [3]Cao;Qilong [3]Wang;Deliang [1]Cui;Ching-Ping [4]Wong 高影响力作者 机构地区：[1]State Key Lab of Crystal Materials,Shandong University,Jinan,250100,China;[2]Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,China;[3]Key Laboratory for Special Functional Aggregated Materials of Education Ministry,School of Chemistry&Chemical Engineering,Shandong University,Jinan,250100,China;[4]School of Materials Science and Engineering,Georgia Institute of Technology,Atlanta,Georgia,30332,USA高影响力机构 出　　处：《Nano Research》索引2020年第13卷第12期,共7页高影响力期刊 基　　金：The authors are grateful to the National Natural Science Foundation of China(NSFC)(Nos.51872172 and 51972197);Natural Science Foundation of Shandong Province(Nos.ZR2018MEM010 and ZR2019MEM021);Major Research and Development Program for Public Welfare in Shandong(No.2018GGX102021);Young Scholars Program of Shandong University. 摘　　要：Developing metal-free and long lifetime room-temperature phosphorescence(RTP)materials has received tremendous interest due to their numerous potential applications,of which stable triplet-excited state is the core challenge.Here,boron carbon oxynitride(BCNO)dots,emitting stable blue fluorescence and green RTP,are reported for the first time.The obtained BCNO dots exhibit an unexpected ultralong RTP lifetime of 1.57 s,lasting over 8 s to naked eyes.The effective doping of carbon and oxygen elements in boron nitride(BN)actually provides a small energy gap between singlet and triplet states,facilitating the intersystem crossing(ISC)and populating of triplet excitons.The formation of compact cores via crystallization and effective inter-/intra-dot hydrogen bonds further stabilizes the excited triplet states and reduces quenching of RTP by oxygen at room temperature.Based on the water-soluble feature of BCNO dots,a novel advanced security ink is developed toward anti-counterfeiting tag and confidential information encryption.This study extends BCNO dots to rarely exploited phosphorescence fields and also provides a facile strategy to prepare ultralong lifetime metal-free RTP materials. 关 键 词：boron carbon oxynitride dots room-temperature phosphorescence fluorescence colourless security ink ANTI-COUNTERFEITING
相关文献

参考文献(48)

耦合文献(167)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费