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Ramírez-Barroso S, Romeo-Gella F, Fernández-García JM, Feng S, Martínez-Fernández L, García-Fresnadillo D, Corral I, Martín N, Wannemacher R. Curved Nanographenes: Multiple Emission, Thermally Activated Delayed Fluorescence, and Non-Radiative Decay. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2212064. [PMID: 37094332 DOI: 10.1002/adma.202212064] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/31/2023] [Indexed: 05/03/2023]
Abstract
The intriguing and rich photophysical properties of three curved nanographenes (CNG 6, 7, and 8) are investigated by time-resolved and temperature-dependent photoluminescence (PL) spectroscopy. CNG 7 and 8 exhibit dual fluorescence, as well as dual phosphorescence at low temperature in the main PL bands. In addition, hot bands are detected in fluorescence as well as phosphorescence, and, in the narrow temperature range of 100-140 K, thermally activated delayed fluorescence (TADF) with lifetimes on the millisecond time-scale is observed. These findings are rationalized by quantum-chemical simulations, which predict a single minimum of the S1 potential of CNG 6, but two S1 minima for CNG 7 and CNG 8, with considerable geometric reorganization between them, in agreement with the experimental findings. Additionally, a higher-lying S2 minimum close to S1 is optimized for the three CNG, from where emission is also possible due to thermal activation and, hence, non-Kasha behavior. The presence of higher-lying dark triplet states close to the S1 minima provides mechanistic evidence for the TADF phenomena observed. Non-radiative decay of the T1 state appears to be thermally activated with activation energies of roughly 100 meV and leads to disappearance of phosphorescence and TADF at T > 140 K.
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Affiliation(s)
- Sergio Ramírez-Barroso
- Department of Organic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
- Imdea Nanoscience, C/ Faraday 9, Cantoblanco, Madrid, 28049, Spain
| | | | - Jesús M Fernández-García
- Department of Organic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
| | - Siyang Feng
- Imdea Nanoscience, C/ Faraday 9, Cantoblanco, Madrid, 28049, Spain
| | - Lara Martínez-Fernández
- Department of Chemistry, Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - David García-Fresnadillo
- Department of Organic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
| | - Inés Corral
- Department of Chemistry, Universidad Autónoma de Madrid, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, 28049, Spain
| | - Nazario Martín
- Department of Organic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
- Imdea Nanoscience, C/ Faraday 9, Cantoblanco, Madrid, 28049, Spain
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Wei Z, Jiang S, Qi F, Lv X, Song J, Gu J, Meng L, Lu C. Predicting and Designing Thermally Activated Delayed Fluorescence Molecules with Balanced Δ
E
ST
and Transition Dipole Moment. ADVANCED THEORY AND SIMULATIONS 2022. [DOI: 10.1002/adts.202200494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zhuangzhuang Wei
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- College of Chemistry and Materials Science Fujian Normal University Fuzhou Fujian 350007 P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen 361021 P. R. China
| | - Shanshan Jiang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- Department of Material Metallurgy and Chemistry Jiangxi University of Science and Technology Ganzhou Jiangxi 341000 P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen 361021 P. R. China
| | - Fangfang Qi
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- College of Chemistry and Materials Science Fujian Normal University Fuzhou Fujian 350007 P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen 361021 P. R. China
| | - Xin Lv
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen 361021 P. R. China
| | - Jinhui Song
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen 361021 P. R. China
| | - Junjing Gu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and College of Chemistry and Chemical Engineering Xiamen University Xiamen Fujian 361005 P. R. China
| | - Lingyi Meng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- College of Chemistry and Materials Science Fujian Normal University Fuzhou Fujian 350007 P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen 361021 P. R. China
| | - Can‐Zhong Lu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- College of Chemistry and Materials Science Fujian Normal University Fuzhou Fujian 350007 P. R. China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen 361021 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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Gu MJ, Wang YF, Han Y, Chen CF. Recent advances on triptycene derivatives in supramolecular and materials chemistry. Org Biomol Chem 2021; 19:10047-10067. [PMID: 34751696 DOI: 10.1039/d1ob01818c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Triptycene derivatives, a type of specific aromatic compound, have been attracting much attention in many research areas. Over the past several years, triptycene and its derivatives have been described to be useful and efficient building blocks for the design and synthesis of novel supramolecular acceptors, porous materials and luminescent materials with specific structures and properties. In this review, recent researches on triptycene derivatives in supramolecular and materials chemistry are summarized. Especially, the construction of a new type of macrocyclic arenes and organic cages with triptycene and its derivatives as building blocks are focused on, and their applications in molecular recognition, self-assembly and gas selective sorption are highlighted. Moreover, the applications of triptycene and its derivatives in porous organic materials and thermally activated delayed fluorescence (TADF) materials are also discussed.
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Affiliation(s)
- Meng-Jie Gu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yin-Feng Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
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