Dual Changes in Conformation and Optical Properties of Fluorophores within a Metal-Organic Framework during Framework Construction and Associated Sensing Event

被引:149
作者
Cho, Won [1 ]
Lee, Hee Jung [1 ]
Choi, Goeun [1 ]
Choi, Sora [1 ]
Oh, Moonhyun [1 ]
机构
[1] Yonsei Univ, Dept Chem, Seoul 120749, South Korea
关键词
ZEOLITIC-IMIDAZOLATE-FRAMEWORK; SENSOR; SITES; TEMPLATE; CAPTURE; DESIGN; REDOX; NANO;
D O I
10.1021/ja504204d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Microsized chemosensor particle (CPP-16, CPP means coordination polymer particle), which is made from a metal-organic framework (MOF), is synthesized using pyrene-functionalized organic building block This building block contains three important parts, a framework construction part, a Cu2+ detection part, and a fluorophore part. PXRD studies have revealed that CPP-16 has a 3D cubic structure of MOF-5. During both MOF formation and sensing event, fluorophores within CPP-16 undergo dual changes in conformation and optical properties. After MOF construction, pyrene moieties experience an unusual complete conversion from monomer to excimer form. This conversion takes place due to a confinement effect induced by space limitations within the MOF structure. The selective sensing ability of CPP-16 on Cu2+ over many other metal ions is verified by emission spectra and is also visually identified by fluorescence microscopy images. Specific interaction of Cu2+ with binding sites within CPP-16 causes a second conformational change of the fluorophores, where they change from stacked excimer (CPP-16) to quenched excimer states (CPP-16 center dot Cu2+).
引用
收藏
页码:12201 / 12204
页数:4
相关论文
共 44 条
[1]   A simple approach to sensor discovery and fabrication on self-assembled monolayers on glass [J].
Basabe-Desmonts, L ;
Beld, J ;
Zimmerman, RS ;
Hernando, J ;
Mela, P ;
García-Parajó, MF ;
van Hulst, NF ;
van den Berg, A ;
Reinhoudt, DN ;
Crego-Calama, M .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (23) :7293-7299
[2]  
Bohnsack A. M., 2013, J AM CHEM SOC, V135, P16038
[3]   Highly selective chromogenic and redox or fluorescent sensors of Hg2+ in aqueous environment based on 1,4-disubstituted azines [J].
Caballero, A ;
Martínez, R ;
Lloveras, V ;
Ratera, I ;
Vidal-Gancedo, J ;
Wurst, K ;
Tárraga, A ;
Molina, P ;
Veciana, J .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (45) :15666-15667
[4]   Nanoscale metal-organic materials [J].
Carne, Arnau ;
Carbonell, Carlos ;
Imaz, Inhar ;
Maspoch, Daniel .
CHEMICAL SOCIETY REVIEWS, 2011, 40 (01) :291-305
[5]   A luminescent microporous metal-organic framework for the recognition and sensing of anions [J].
Chen, Banglin ;
Wang, Liangbo ;
Zapata, Fatima ;
Qian, Guodong ;
Lobkovsky, Emil B. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (21) :6718-+
[6]   Luminescent open metal sites within a metal-organic framework for sensing small molecules [J].
Chen, Banglin ;
Yang, Yu ;
Zapata, Fatima ;
Lin, Guannan ;
Qian, Guodong ;
Lobkovsky, Emil B. .
ADVANCED MATERIALS, 2007, 19 (13) :1693-+
[7]   A Luminescent Metal-Organic Framework with Lewis Basic Pyridyl Sites for the Sensing of Metal Ions [J].
Chen, Banglin ;
Wang, Liangbo ;
Xiao, Yunqing ;
Fronczek, Frank R. ;
Xue, Ming ;
Cui, Yuanjing ;
Qian, Guodong .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (03) :500-503
[8]   Growth-Controlled Formation of Porous Coordination Polymer Particles [J].
Cho, Won ;
Lee, Hee Jung ;
Oh, Moonhyun .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (50) :16943-16946
[9]   A PCT-based, pyrene-armed calix[4]crown fluoroionophore [J].
Choi, Jung Kyu ;
Kim, Su Ho ;
Yoon, Juyoung ;
Lee, Keun-Hyeung ;
Bartsch, Richard A. ;
Kim, Jong Seung .
JOURNAL OF ORGANIC CHEMISTRY, 2006, 71 (21) :8011-8015
[10]   Nanoscale Metal-Organic Frameworks for Biomedical Imaging and Drug Delivery [J].
Della Rocca, Joseph ;
Liu, Demin ;
Lin, Wenbin .
ACCOUNTS OF CHEMICAL RESEARCH, 2011, 44 (10) :957-968