Polyimides with Heavy Halogens Exhibiting Room-Temperature Phosphorescence with Very Large Stokes Shifts

被引：99
作者：
Kanosue, Kenta [1 ]
Ando, Shinji [1 ]
机构：
[1] Tokyo Inst Technol, Sch Mat & Chem Technol, Dept Chem Sci & Engn, Meguro Ku, Ookayama 2-12-1-E4-5, Tokyo 1528552, Japan
来源：
ACS MACRO LETTERS | 2016年 / 5卷 / 12期
基金：
日本学术振兴会;
关键词：
INTRAMOLECULAR PROTON-TRANSFER; BRIGHT RED FLUORESCENCE; FREE ORGANIC MATERIALS; EXCITED-STATE; IMIDE COMPOUNDS; CO-CRYSTALS; POLYMERS; BONDS;
D O I：
10.1021/acsmacrolett.6b00642
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Semiaromatic polyimides (PIs) and imide compounds containing heavy halogens (Br, I) in pyromellitic moieties were designed and synthesized to examine their photoluminescence properties. Solutions of imides and PI films exhibited reddish-color room-temperature phosphorescence (RTP) with very large Stokes shifts (ca. 10000 cm(-1)). In addition, the PI films showed small-Stokes-shifted fluorescence emissions at around 540 nm with absorption bands arising from aggregated PI chains at 400-500 nm. Enhanced phosphorescence observed for the PI films under vacuum indicates that the RTP lifetime is significantly influenced by the triplet triplet energy transfer to atmospheric oxygen. These PIs with very-large-Stokes-shifted RTP are applicable as spectral conversion materials in displays, photovoltaic devices, and crop cultivators, as well as to oxygen/air sensors.
引用
收藏
页码：1301 / 1305
页数：5
相关论文
共 30 条
[1]  
An ZF, 2015, NAT MATER, V14, P685, DOI [10.1038/nmat4259, 10.1038/NMAT4259]
[2]   Halogen bonding in polymer science: from crystal engineering to functional supramolecular polymers and materials [J].
Berger, Gilles ;
Soubhye, Jalal ;
Meyer, Franck .
POLYMER CHEMISTRY, 2015, 6 (19) :3559-3580
[3]   Activating efficient phosphorescence from purely organic materials by crystal design [J].
Bolton, Onas ;
Lee, Kangwon ;
Kim, Hyong-Jun ;
Lin, Kevin Y. ;
Kim, Jinsang .
NATURE CHEMISTRY, 2011, 3 (03) :205-210
[4]   Tuning the Singlet Triplet Gap in Metal-Free Phosphorescent π-Conjugated Polymers [J].
Chaudhuri, Debangshu ;
Wettach, Henning ;
van Schooten, Kipp J. ;
Liu, Su ;
Sigmund, Eva ;
Hoeger, Sigurd ;
Lupton, John M. .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2010, 49 (42) :7714-7717
[5]   Amorphous, Efficient, Room-Temperature Phosphorescent Metal-Free Polymers and Their Applications as Encryption Ink [J].
Chen, Hui ;
Yao, Xuyang ;
Ma, Xiang ;
Tian, He .
ADVANCED OPTICAL MATERIALS, 2016, 4 (09) :1397-1401
[6]   Transition-metal phosphors with cyclometalating ligands: fundamentals and applications [J].
Chi, Yun ;
Chou, Pi-Tai .
CHEMICAL SOCIETY REVIEWS, 2010, 39 (02) :638-655
[7]   Charge transfer states in the photophysics and photochemistry of polyimides and related phthalimides [J].
Creed, D ;
Hoyle, CE ;
Jordan, JW ;
Pandey, CA ;
Nagarajan, R ;
Pankasem, S ;
Peeler, AM ;
Subramanian, P .
MACROMOLECULAR SYMPOSIA, 1997, 116 :1-13
[8]   New Insights in the Study of Pyrene Excimer Fluorescence to Characterize Macromolecules and their Supramolecular Assemblies in Solution [J].
Duhamel, Jean .
LANGMUIR, 2012, 28 (16) :6527-6538
[9]  
Hasegawa T, 2001, PROG POLYM SCI, V26, P259
[10]   Efficient Persistent Room Temperature Phosphorescence in Organic Amorphous Materials under Ambient Conditions [J].
Hirata, Shuzo ;
Totani, Kenro ;
Zhang, Junxiang ;
Yamashita, Takashi ;
Kaji, Hironori ;
Marder, Seth R. ;
Watanabe, Toshiyuki ;
Adachi, Chihaya .
ADVANCED FUNCTIONAL MATERIALS, 2013, 23 (27) :3386-3397
123