Aggregation-induced emission enhancement materials with large red shifts and their self-assembled crystal microstructures
Aggregation-induced emission enhancement materials with large red shifts and their self-assembled crystal microstructures
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大红移聚集诱导发射增强材料及其自组装晶体微结构
DOI：
10.1039/c1ce05035d
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发表时间：
2011-06
期刊：
影响因子：
3.1
通讯作者：
Wang, Pengfei
中科院分区：
文献类型：
--
作者：
Dai, Qing;Liu, Weimin;Zeng, Lintao;Lee, Chun-Sing;Wu, Jiasheng;Wang, Pengfei
以2-苄基氧基-4-二乙基氨基苯甲醛为原料，合成了两个简单的分子内电荷转移化合物BzBMN和BzFAN。与典型的AIEE分子不同，这些化合物在固态下的增强发射伴随着发射波长的大红移。研究了化合物在溶液、薄膜和x射线单晶结构中的吸收光谱和光致发光（PL）光谱，以了解固体状态下增强发射的机理。结果表明，色移类准分子发射来自于偶极-偶极相互作用和远距离有序排列（如j聚集）诱导的二聚体，而增强的发射是由于多个分子间氢键相互作用引起的分子内旋转的限制。此外，通过简单的再沉淀法还观察到BzBMN和BzFAN可以很容易地形成单晶微带和微管。
Two simple intramolecular charge transfer compounds (BzBMN and BzFAN), derived from 2-benzyloxy-4-diethylaminobenzaldehyde, have been synthesized. Unlike typical AIEE molecules, the enhanced emission of these compounds in the solid state is accompanied by large red shifts in emission wavelength. Absorption and photoluminescence (PL) spectra of the compounds in solution, film and the X-ray single crystal structures were investigated to understand the mechanism of enhanced emission in the solid state. The results indicate that the bathochromic shift excimer-like emissions originated from dimers induced by the dipole–dipole interaction and long-range ordered arrangement (e.g. J-aggregation), and the enhanced emission is attributed to the restriction of intramolecular rotations caused by multiple intermolecular hydrogen bonding interactions. In addition, it was also observed that BzBMN and BzFAN can facilely form single crystal microbelts and microtubes by a simple reprecipitation method.
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影响因子：
15
作者：
Chen, Chien-Tien;Wei, Yi;Chien, Chin-Hsiung
通讯作者：
Chien, Chin-Hsiung
影响因子：
--
作者：
D. Seebach;A. Beck;A. Heckel
通讯作者：
D. Seebach;A. Beck;A. Heckel
影响因子：
19
作者：
Lim, SF;Friend, RH;Cacialli, F
通讯作者：
Cacialli, F
影响因子：
3.7
作者：
Jialiang Xu;L. Wen;Weidong Zhou;J. Lv;Yanbing Guo;Mei Zhu;Huibiao Liu;Yuliang Li;Lei Jiang-Lei
通讯作者：
Jialiang Xu;L. Wen;Weidong Zhou;J. Lv;Yanbing Guo;Mei Zhu;Huibiao Liu;Yuliang Li;Lei Jiang-Lei
影响因子：
3.3
作者：
Li, Z;Dong, Y;Tang, BZ
通讯作者：
Tang, BZ