Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline Moiety

An asymmetric aza-BODIPY analogue bearing quinoxaline moiety was synthesized via a titanium tetrachloride-mediated Schiff-base-forming reaction of 6,7-dimethyl-1,4-dihydroquinoxaline-2,3-dione and benzo[<i>d</i>]thiazol-2-amine. This novel aza-BODIPY analogue forms a complementary hydrog...

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Main Authors: Ru Feng, Zuoxu Chen, Yue Wang, Jianming Pan, Soji Shimizu
Format: Article
Language:English
Published: MDPI AG 2023-12-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/28/24/7940
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author Ru Feng
Zuoxu Chen
Yue Wang
Jianming Pan
Soji Shimizu
author_facet Ru Feng
Zuoxu Chen
Yue Wang
Jianming Pan
Soji Shimizu
author_sort Ru Feng
collection DOAJ
description An asymmetric aza-BODIPY analogue bearing quinoxaline moiety was synthesized via a titanium tetrachloride-mediated Schiff-base-forming reaction of 6,7-dimethyl-1,4-dihydroquinoxaline-2,3-dione and benzo[<i>d</i>]thiazol-2-amine. This novel aza-BODIPY analogue forms a complementary hydrogen-bonded dimer due to the quinoxaline moiety in the crystal structure. It also shows intense absorption and fluorescence, with fluorescence quantum yields close to unity. The electrochemical measurements and the DFT calculations revealed the presence of the low-lying HOMO, which benefits their potential applications as an electron-transporting material.
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spelling doaj.art-5e71eb6198bc4adb89ee9c30e2750f432023-12-22T14:27:08ZengMDPI AGMolecules1420-30492023-12-012824794010.3390/molecules28247940Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline MoietyRu Feng0Zuoxu Chen1Yue Wang2Jianming Pan3Soji Shimizu4School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaDepartment of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, JapanAn asymmetric aza-BODIPY analogue bearing quinoxaline moiety was synthesized via a titanium tetrachloride-mediated Schiff-base-forming reaction of 6,7-dimethyl-1,4-dihydroquinoxaline-2,3-dione and benzo[<i>d</i>]thiazol-2-amine. This novel aza-BODIPY analogue forms a complementary hydrogen-bonded dimer due to the quinoxaline moiety in the crystal structure. It also shows intense absorption and fluorescence, with fluorescence quantum yields close to unity. The electrochemical measurements and the DFT calculations revealed the presence of the low-lying HOMO, which benefits their potential applications as an electron-transporting material.https://www.mdpi.com/1420-3049/28/24/7940aza-BODIPYquinoxalinehydrogen bondingfluorescence
spellingShingle Ru Feng
Zuoxu Chen
Yue Wang
Jianming Pan
Soji Shimizu
Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline Moiety
Molecules
aza-BODIPY
quinoxaline
hydrogen bonding
fluorescence
title Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline Moiety
title_full Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline Moiety
title_fullStr Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline Moiety
title_full_unstemmed Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline Moiety
title_short Facile Synthesis of Asymmetric aza-Boron Dipyrromethene Analogues Bearing Quinoxaline Moiety
title_sort facile synthesis of asymmetric aza boron dipyrromethene analogues bearing quinoxaline moiety
topic aza-BODIPY
quinoxaline
hydrogen bonding
fluorescence
url https://www.mdpi.com/1420-3049/28/24/7940
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