|
1
|
Yamaguchi K, Yamawaki K, Kimura T, Kuwabara J, Yasuda T, Nishimura Y, Kanbara T. Multi-molecular emission of a cationic Pt(ii) complex through hydrogen bonding interactions. Dalton Trans 2018; 47:4087-4092. [PMID: 29451289 DOI: 10.1039/c8dt00314a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cationic Pt complexes with amide groups have been found to show dimer emission through hydrogen bonding interactions with counter anions even at low concentration. In order to investigate further details of dimer emission, we prepared three Pt complexes, Pt·B(C6F5)4, Pt·Cl, and Pt·PF6, whose counter anions possess different strengths of a hydrogen bonding acceptor. Hydrogen bonding interactions in the ground state and excited-state dynamics of the Pt complexes were evaluated by NMR analysis, temperature dependence, and kinetics of dimer emission. These studies revealed that the hydrogen bonding interaction in the ground state is essential for dimer emission, but too strong hydrogen bonding prevents dimer emission due to the inhibition of a stacked dimer formation in the excited state. Owing to this trade-off, the Pt complex with a moderate hydrogen bonding acceptor, PF6-, most effectively shows dimer emission. In general, a strong supramolecular interaction efficiently provides a desired assembled structure showing multi-molecular emission. We revealed a unique phenomenon that a moderate interaction is beneficial to effective multi-molecular emission.
Collapse
Affiliation(s)
- Kaho Yamaguchi
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| | - Kazuma Yamawaki
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| | - Takuya Kimura
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| | - Junpei Kuwabara
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| | - Takeshi Yasuda
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Yoshinobu Nishimura
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Takaki Kanbara
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
| |
Collapse
|
|
2
|
MORIUCHI T, HIRAO T. Self-Assemblies of Bioorganometallic Conjugates. KOBUNSHI RONBUNSHU 2016. [DOI: 10.1295/koron.2015-0047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Toshiyuki MORIUCHI
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | - Toshikazu HIRAO
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
- Institute of Industrial and Scientific Research, Osaka University
| |
Collapse
|
|
3
|
Bilbao N, Vázquez-González V, Aranda MT, González-Rodríguez D. Synthesis of 5-/8-Halogenated or Ethynylated Lipophilic Nucleobases as Potential Synthetic Intermediates for Supramolecular Chemistry. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
|
4
|
Roşca DA, Fernandez-Cestau J, Romanov AS, Bochmann M. Synthesis, C–N cleavage and photoluminescence of gold(III) isocyanide complexes. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
|
5
|
Moriuchi T, Ohata R, Sakamoto Y, Hirao T. Self-Assembly Properties of NCN Pincer Palladium(II) Complexes Bearing a Uracil Moiety. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400131] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
|
6
|
Smith DA, Roşca DA, Bochmann M. Selective Au–C Cleavage in (C∧N∧C)Au(III) Aryl and Alkyl Pincer Complexes. Organometallics 2012. [DOI: 10.1021/om300666j] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Dan A. Smith
- Wolfson Materials and Catalysis Centre, School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, U.K
| | - Dragoş-Adrian Roşca
- Wolfson Materials and Catalysis Centre, School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, U.K
| | - Manfred Bochmann
- Wolfson Materials and Catalysis Centre, School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, U.K
| |
Collapse
|
|
7
|
Meng X, Moriuchi T, Sakamoto Y, Kawahata M, Yamaguchi K, Hirao T. La(OTf)3-mediated self-organization of guanosine with an alkynyl-Au(i)PPh3 moiety to induce Au(i)–Au(i) interactions. RSC Adv 2012. [DOI: 10.1039/c2ra01196d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
|