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Borissov A, Maurya YK, Moshniaha L, Wong WS, Żyła-Karwowska M, Stępień M. Recent Advances in Heterocyclic Nanographenes and Other Polycyclic Heteroaromatic Compounds. Chem Rev 2022; 122:565-788. [PMID: 34850633 PMCID: PMC8759089 DOI: 10.1021/acs.chemrev.1c00449] [Citation(s) in RCA: 213] [Impact Index Per Article: 106.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 12/21/2022]
Abstract
This review surveys recent progress in the chemistry of polycyclic heteroaromatic molecules with a focus on structural diversity and synthetic methodology. The article covers literature published during the period of 2016-2020, providing an update to our first review of this topic (Chem. Rev. 2017, 117 (4), 3479-3716).
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Affiliation(s)
| | | | | | | | | | - Marcin Stępień
- Wydział Chemii, Uniwersytet
Wrocławski, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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Liang R, Xiong W, Lo KC, Ho PY, Bai X, Lai W, Chan WK, Du L, Phillips DL. Revealing the Photophysical Dynamics of Selected Rigid Donor-Acceptor Systems: From Ligands to Ruthenium(II) Complexes. J Phys Chem Lett 2021; 12:10927-10935. [PMID: 34734732 DOI: 10.1021/acs.jpclett.1c03122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Newly designed push-pull ligands (L1 and L2) with bithiophene (bth) as a donor and phenazine (phz) or quinoxalino[2,3-b]quinoxaline (qxq) as acceptors were synthesized and also incorporated with a bipyridyl Ru(II) complex to give Ru1 and Ru2, respectively. The ultrafast photophysical dynamics of the ligand and their respective Ru(II) complexes were well-characterized using time-resolved spectroscopies and quantum chemical calculations. Photoinduced charger transfer (CT) and intersystem crossing (ISC) processes were directly observed for L1 and L2. In addition, the interplay of three different triplet excited states was directly observed in the related Ru(II) complexes. The lowest-lying triplet excited states of the ligands and their respective Ru(II) complexes were both attributed to the CT transitions from donor (bth) to acceptor (phz or qxq) and result in 3ICT (intramolecular charge transfer) and 3ILCT (intraligand charge transfer) excited states, respectively. The lifetimes of the lowest-lying triplet excited states of L1, L2, Ru1, and Ru2 were measured to be 21.3, 50.4, 2.75, and 4.16 μs, respectively.
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Affiliation(s)
- Runhui Liang
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, China
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Wenjuan Xiong
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Kin Cheung Lo
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Po Yuen Ho
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Xueqin Bai
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Wenquan Lai
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Wai Kin Chan
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Lili Du
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, China
| | - David Lee Phillips
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
- Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Hong Kong, China
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