An unusual one-donor-two-acceptor interaction in a pair of covalently bridged naphthalenediimide dimers

被引：6
|
作者：
Sao, Soumik [1 ]
Samanta, Bibek R. [1 ]
Chaudhuri, Debangshu [1 ]
机构：
[1] Indian Inst Sci Educ & Res, Dept Chem Sci, Mohanpur 741246, India
来源：
RSC ADVANCES | 2016年 / 6卷 / 41期
关键词：
PHOTOPHYSICS; MOLECULES; TRANSPORT; DIIMIDES; DYNAMICS; DESIGN; DONOR;
D O I：
10.1039/c6ra02133f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An unusual donor-acceptor (D-A) state is reported in a pair of regioisomeric xylylene-bridged naphthalenediimide (NDI) dimers. The D-A state is characterized by a weak, red-shifted absorbance and a photoluminescence (PL) with a very high quantum efficiency. PL and PL excitation (PLE) spectroscopy reveals the partial charge-transfer character of the D-A state. Disruption of this D-A interaction in the presence of a competing donor, reveals the unique one-donor-two-acceptors stoichiometry. Finally, the effect of intramolecular pi-stacking on the D-A interaction is discussed.
引用
收藏
页码：34350 / 34353
页数：4
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