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溶剂选择对 2,7-双(4-二乙氨基苯基)芴酮的扭曲分子内电荷转移和激基缔合物发射的选择性形成。

Selective formation of twisted intramolecular charge transfer and excimer emissions on 2,7-bis(4-diethylaminophenyl)-fluorenone by choice of solvent.

机构信息

Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan.

出版信息

Molecules. 2012 Apr 13;17(4):4452-9. doi: 10.3390/molecules17044452.

DOI:10.3390/molecules17044452
PMID:22504830
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6268939/
Abstract

We designed and synthesized a donor-acceptor-donor dye consisting of a 2,7-disubstituted fluorenone with diethylaminophenyl moieties present as strong electron donating groups. Switching between twisted intramolecular charge transfer (TICT) emission and excimer emission was achieved, with no ground state changes, by simply changing the solvent used. In a nonpolar solvent, excimer emission was observed; with increasing polarity, the emission gradually disappeared, and the TICT emission appeared.

摘要

我们设计并合成了一种由 2,7-二取代芴酮组成的给体-受体-给体染料，其中带有二乙氨基苯基部分作为强供电子基团。通过简单改变所用溶剂，即可在无基态变化的情况下，实现扭曲的分子内电荷转移（TICT）发射和激基缔合物发射之间的切换。在非极性溶剂中，观察到激基缔合物发射；随着极性的增加，发射逐渐消失，出现 TICT 发射。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/dc17b0a7cb2f/molecules-17-04452-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/27d7a19e824c/molecules-17-04452-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/cf190864c66f/molecules-17-04452-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/acfe5c18a2a5/molecules-17-04452-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/292f62bd5f05/molecules-17-04452-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/dc17b0a7cb2f/molecules-17-04452-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/27d7a19e824c/molecules-17-04452-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/cf190864c66f/molecules-17-04452-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/acfe5c18a2a5/molecules-17-04452-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/292f62bd5f05/molecules-17-04452-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c72/6268939/dc17b0a7cb2f/molecules-17-04452-g003.jpg

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