Coordination-Driven Self-Assembled Metallacycles Incorporating Pyrene: Fluorescence Mutability, Tunability, and Aromatic Amine Sensing

Constructing polycyclic aromatics-based, highly emissive fluorophores with good solubility and tunable aggregated structures and properties is of great importance for film fabrication, solution processing, and relevant functionality studies. Herein, we describe a general strategy to endow convention...

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Veröffentlicht in:Journal of the American Chemical Society Jg. 141; H. 4; S. 1757
Hauptverfasser: Chang, Xingmao, Zhou, Zhixuan, Shang, Congdi, Wang, Gang, Wang, Zhaolong, Qi, Yanyu, Li, Zhong-Yu, Wang, Heng, Cao, Liping, Li, Xiaopeng, Fang, Yu, Stang, Peter J
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Veröffentlicht: United States 30.01.2019
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ISSN:1520-5126, 1520-5126
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Abstract Constructing polycyclic aromatics-based, highly emissive fluorophores with good solubility and tunable aggregated structures and properties is of great importance for film fabrication, solution processing, and relevant functionality studies. Herein, we describe a general strategy to endow conventional organic fluorophores with enhanced solubility and modulated fluorescent properties via their incorporation into coordination-driven self-assembled metallacycles. A widely used fluorophore, pyrene, was decorated with two pyridyl groups to yield functionalized pyrene 4. Mixing 4 with three aromatic dicarboxylates with different lengths and a 90° Pt(II) metal acceptor in a 2:2:4 stoichiometric ratio resulted in the formation of three metallacycles, 1, 2, and 3. The metallacycles display good solubility in polar organic solvents, highly aggregation-dependent fluorescence, and size-dependent emissions at higher concentrations. Moreover, metallacycle 2-based, silica-gel-supported film as fabricated not only is more emissive than the ligand 4-based one but also displays much improved sensing properties for amines in the vapor state, as demonstrated by significantly increased response speed and decreased recovery time. The enhanced solubility, unique fluorescence behavior, and multi-factor modulation character show that coordination-driven self-assembly can be utilized for the development of new fluorophores through simple modification of conventional fluorophores. The fluorophores synthesized this way possess not only complex topological structures but also good modularity and tunability in fluorescence behavior, which are important for grafting multi-stage energy-transfer systems necessary for the development of high-performance sensing materials.
AbstractList Constructing polycyclic aromatics-based, highly emissive fluorophores with good solubility and tunable aggregated structures and properties is of great importance for film fabrication, solution processing, and relevant functionality studies. Herein, we describe a general strategy to endow conventional organic fluorophores with enhanced solubility and modulated fluorescent properties via their incorporation into coordination-driven self-assembled metallacycles. A widely used fluorophore, pyrene, was decorated with two pyridyl groups to yield functionalized pyrene 4. Mixing 4 with three aromatic dicarboxylates with different lengths and a 90° Pt(II) metal acceptor in a 2:2:4 stoichiometric ratio resulted in the formation of three metallacycles, 1, 2, and 3. The metallacycles display good solubility in polar organic solvents, highly aggregation-dependent fluorescence, and size-dependent emissions at higher concentrations. Moreover, metallacycle 2-based, silica-gel-supported film as fabricated not only is more emissive than the ligand 4-based one but also displays much improved sensing properties for amines in the vapor state, as demonstrated by significantly increased response speed and decreased recovery time. The enhanced solubility, unique fluorescence behavior, and multi-factor modulation character show that coordination-driven self-assembly can be utilized for the development of new fluorophores through simple modification of conventional fluorophores. The fluorophores synthesized this way possess not only complex topological structures but also good modularity and tunability in fluorescence behavior, which are important for grafting multi-stage energy-transfer systems necessary for the development of high-performance sensing materials.Constructing polycyclic aromatics-based, highly emissive fluorophores with good solubility and tunable aggregated structures and properties is of great importance for film fabrication, solution processing, and relevant functionality studies. Herein, we describe a general strategy to endow conventional organic fluorophores with enhanced solubility and modulated fluorescent properties via their incorporation into coordination-driven self-assembled metallacycles. A widely used fluorophore, pyrene, was decorated with two pyridyl groups to yield functionalized pyrene 4. Mixing 4 with three aromatic dicarboxylates with different lengths and a 90° Pt(II) metal acceptor in a 2:2:4 stoichiometric ratio resulted in the formation of three metallacycles, 1, 2, and 3. The metallacycles display good solubility in polar organic solvents, highly aggregation-dependent fluorescence, and size-dependent emissions at higher concentrations. Moreover, metallacycle 2-based, silica-gel-supported film as fabricated not only is more emissive than the ligand 4-based one but also displays much improved sensing properties for amines in the vapor state, as demonstrated by significantly increased response speed and decreased recovery time. The enhanced solubility, unique fluorescence behavior, and multi-factor modulation character show that coordination-driven self-assembly can be utilized for the development of new fluorophores through simple modification of conventional fluorophores. The fluorophores synthesized this way possess not only complex topological structures but also good modularity and tunability in fluorescence behavior, which are important for grafting multi-stage energy-transfer systems necessary for the development of high-performance sensing materials.
Constructing polycyclic aromatics-based, highly emissive fluorophores with good solubility and tunable aggregated structures and properties is of great importance for film fabrication, solution processing, and relevant functionality studies. Herein, we describe a general strategy to endow conventional organic fluorophores with enhanced solubility and modulated fluorescent properties via their incorporation into coordination-driven self-assembled metallacycles. A widely used fluorophore, pyrene, was decorated with two pyridyl groups to yield functionalized pyrene 4. Mixing 4 with three aromatic dicarboxylates with different lengths and a 90° Pt(II) metal acceptor in a 2:2:4 stoichiometric ratio resulted in the formation of three metallacycles, 1, 2, and 3. The metallacycles display good solubility in polar organic solvents, highly aggregation-dependent fluorescence, and size-dependent emissions at higher concentrations. Moreover, metallacycle 2-based, silica-gel-supported film as fabricated not only is more emissive than the ligand 4-based one but also displays much improved sensing properties for amines in the vapor state, as demonstrated by significantly increased response speed and decreased recovery time. The enhanced solubility, unique fluorescence behavior, and multi-factor modulation character show that coordination-driven self-assembly can be utilized for the development of new fluorophores through simple modification of conventional fluorophores. The fluorophores synthesized this way possess not only complex topological structures but also good modularity and tunability in fluorescence behavior, which are important for grafting multi-stage energy-transfer systems necessary for the development of high-performance sensing materials.
Author Li, Zhong-Yu
Qi, Yanyu
Cao, Liping
Stang, Peter J
Chang, Xingmao
Shang, Congdi
Fang, Yu
Zhou, Zhixuan
Wang, Gang
Li, Xiaopeng
Wang, Heng
Wang, Zhaolong
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  surname: Chang
  fullname: Chang, Xingmao
  organization: Department of Chemistry , University of Utah , 315 South 1400 East, Room 2020 , Salt Lake City , Utah 84112 , United States
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  givenname: Zhixuan
  orcidid: 0000-0001-8295-5860
  surname: Zhou
  fullname: Zhou, Zhixuan
  organization: Department of Chemistry , University of Utah , 315 South 1400 East, Room 2020 , Salt Lake City , Utah 84112 , United States
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  givenname: Congdi
  surname: Shang
  fullname: Shang, Congdi
  organization: Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Materials Science and Engineering and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , P. R. China
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  givenname: Gang
  surname: Wang
  fullname: Wang, Gang
  organization: Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Materials Science and Engineering and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , P. R. China
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  givenname: Zhaolong
  surname: Wang
  fullname: Wang, Zhaolong
  organization: Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Materials Science and Engineering and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , P. R. China
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  surname: Qi
  fullname: Qi, Yanyu
  organization: Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Materials Science and Engineering and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , P. R. China
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  givenname: Zhong-Yu
  surname: Li
  fullname: Li, Zhong-Yu
  organization: Department of Chemistry , University of Utah , 315 South 1400 East, Room 2020 , Salt Lake City , Utah 84112 , United States
– sequence: 8
  givenname: Heng
  surname: Wang
  fullname: Wang, Heng
  organization: Department of Chemistry , University of South Florida , 4202 East Fowler Avenue , Tampa , Florida 33620 , United States
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  givenname: Liping
  orcidid: 0000-0002-1747-6107
  surname: Cao
  fullname: Cao, Liping
  organization: Department of Chemistry , University of Utah , 315 South 1400 East, Room 2020 , Salt Lake City , Utah 84112 , United States
– sequence: 10
  givenname: Xiaopeng
  orcidid: 0000-0001-9655-9551
  surname: Li
  fullname: Li, Xiaopeng
  organization: Department of Chemistry , University of South Florida , 4202 East Fowler Avenue , Tampa , Florida 33620 , United States
– sequence: 11
  givenname: Yu
  orcidid: 0000-0001-8490-8080
  surname: Fang
  fullname: Fang, Yu
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  givenname: Peter J
  orcidid: 0000-0002-2307-0576
  surname: Stang
  fullname: Stang, Peter J
  organization: Department of Chemistry , University of Utah , 315 South 1400 East, Room 2020 , Salt Lake City , Utah 84112 , United States
BackLink https://www.ncbi.nlm.nih.gov/pubmed/30608681$$D View this record in MEDLINE/PubMed
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Snippet Constructing polycyclic aromatics-based, highly emissive fluorophores with good solubility and tunable aggregated structures and properties is of great...
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SubjectTerms Amines - analysis
Amines - chemistry
Models, Molecular
Molecular Conformation
Photochemical Processes
Pyrenes - chemistry
Spectrometry, Fluorescence - instrumentation
Title Coordination-Driven Self-Assembled Metallacycles Incorporating Pyrene: Fluorescence Mutability, Tunability, and Aromatic Amine Sensing
URI https://www.ncbi.nlm.nih.gov/pubmed/30608681
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