Tuning the optical properties of spiro-centered charge-transfer dyes by extending the donor or acceptor part

被引：11

作者：

Woessner, Jan S. ^{[1
]}

Grenz, David C. ^{[1
]}

Kratzert, Daniel ^{[2
]}

Esser, Birgit ^{[1
,3
,4
]}

机构：

[1] Univ Freiburg, Inst Organ Chem, Albertst 21, D-79104 Freiburg, Germany

[2] Univ Freiburg, Inst Inorgan & Analyt Chem, Albertstr 21, D-79101 Freiburg, Germany

[3] Univ Freiburg, Freiburg Mat Res Ctr, Stefan Meier Str 21, D-79104 Freiburg, Germany

[4] Univ Freiburg, Cluster Excellence LivMatS Fit, Freiburg Ctr Interact Mat & Bioinspired Technol, Georges Kohler Allee 105, D-79110 Freiburg, Germany

来源：

ORGANIC CHEMISTRY FRONTIERS | 2019年 / 6卷 / 21期

关键词：

ACTIVATED DELAYED FLUORESCENCE; PHOSPHORESCENT; SPIROCONJUGATION; DERIVATIVES; DESIGN; HOST;

D O I：

10.1039/c9qo01134j

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Charge-transfer-based materials with intramolecular donor-acceptor structure are widely used in technological applications. A separation of donor and acceptor through a tetrahedral spiro center leads to a rigid orthogonal arrangement. Furthermore, spiroconjugation can enhance efficient charge transfer. We herein present the syntheses, structural, electrochemical and optical properties of spiro-based CT compounds with diamine donors and diketone acceptors supported by TDDFT calculations. All compounds showed strong charge transfer in their absorbance spectra. Extending the acceptor or donor part of these compounds led to materials with emissions from the CT states. These results can aid the future design of spiro-DA-compounds towards achieving the desired optical properties.

引用

页码：3649 / 3656

页数：8

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