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Bo Y, Zhang H, Li Y, Reva Y, Xie L, Guldi DM. Tuning the Absorption, Fluorescence, Intramolecular Charge Transfer, and Intersystem Crossing in Spiro[fluorene]acridinone. Angew Chem Int Ed Engl 2024; 63:e202313936. [PMID: 38314965 DOI: 10.1002/anie.202313936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/07/2024]
Abstract
In this work, we prepared a series of electron donor-acceptor systems based on spiro[fluorene-9,7'-dibenzo[c,h]acridine]-5'-one (SFDBAO). Our SFDBAOs consist of orthogonally positioned fluorenes and aromatic ketones. By fine-tuning the substitution of electron-donating pyrenes, the complex interplay among different excited-state decay channels and the overall impact of solvents on these decay channels were uncovered. Placing pyrene, for example, at the aromatic ketones resulted in a profound solvatochromism in the form of a bright charge-transfer (CT) emission spanning from yellow to red-NIR. In contrast, a dark non-emissive CT was noted upon pyrene substitution at the fluorenes. In apolar solvents, efficient triplet-excited state generation was observed for all SFDBAOs. Either charge transfer was concluded to mediate the intersystem crossing (ISC) in the case of pyrene substitution or the El-Sayed rule was applicable when lacking pyrene substitution as in the case of SFABAO. In polar solvents, charge separation is the sole decay upon pyrene substitution. Moreover, competition between ISC and CT lowered the triplet-excited state generation in SFDBAO.
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Affiliation(s)
- Yifan Bo
- Department of Chemistry and Pharmacy &, Interdisciplinary Center of Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - He Zhang
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Center for Molecular Systems and Organic Devices (CMSOD), Nanjing University of Posts and Telecommunications, Wenyuan Road 9, Nanjing, 210023, China
- School of Materials Science and Engineering, Anhui University, Jiulong Road 111, Hefei, 230601, China
| | - Yue Li
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Center for Molecular Systems and Organic Devices (CMSOD), Nanjing University of Posts and Telecommunications, Wenyuan Road 9, Nanjing, 210023, China
| | - Yana Reva
- Department of Chemistry and Pharmacy &, Interdisciplinary Center of Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Linghai Xie
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Center for Molecular Systems and Organic Devices (CMSOD), Nanjing University of Posts and Telecommunications, Wenyuan Road 9, Nanjing, 210023, China
- School of Flexible Electronics (SoFE), Henan Institute of Flexible Electronics (HIFE), Henan University, Mingli Road 379, Zhengzhou, 450046, China
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy &, Interdisciplinary Center of Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
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Ren W, Li J, Zu B, Lei D, Dou X. Design of Highly Efficient Electronic Energy Transfer in Functionalized Quantum Dots Driven Specifically by Ethylenediamine. JACS AU 2024; 4:545-556. [PMID: 38425925 PMCID: PMC10900220 DOI: 10.1021/jacsau.3c00667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/20/2023] [Accepted: 12/26/2023] [Indexed: 03/02/2024]
Abstract
The exploration of emerging functionalized quantum dots (QDs) through modulating the effective interaction between the sensing element and target analyte is of great significance for high-performance trace sensing. Here, the chromone-based ligand grafted QDs (QDs-Chromone) were initiated to realize the electronic energy transfer (EET) driven specifically by ethylenediamine (EDA) in the absence of spectral overlap. The fluorescent and colorimetric dual-mode responses (from red to blue and from colorless to yellow, respectively) resulting from the expanded conjugated ligands reinforced the analytical selectivity, endowing an ultrasensitive and specific response to submicromolar-liquid of EDA. In addition, a QDs-Chromone-based sensing chip was constructed to achieve the ultrasensitive recognition of EDA vapor with a naked-eye observed response at a concentration as low as 10 ppm, as well as a robust anti-interfering ability in complicated scenarios monitoring. We expect the proposed EET strategy in shaping functionalized QDs for high-performance sensing will shine light on both rational probe design methodology and deep sensing mechanism exploration.
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Affiliation(s)
- Wenfei Ren
- Xinjiang
Key Laboratory of Trace Chemicals Sensing, Xinjiang Technical Institute
of Physics & Chemistry, Chinese Academy
of Sciences, Urumqi 830011, China
- Center
of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiguang Li
- Xinjiang
Key Laboratory of Trace Chemicals Sensing, Xinjiang Technical Institute
of Physics & Chemistry, Chinese Academy
of Sciences, Urumqi 830011, China
| | - Baiyi Zu
- Xinjiang
Key Laboratory of Trace Chemicals Sensing, Xinjiang Technical Institute
of Physics & Chemistry, Chinese Academy
of Sciences, Urumqi 830011, China
- Key
Laboratory of Improvised Explosive Chemicals for State Market Regulation, Urumqi 830011, China
| | - Da Lei
- Xinjiang
Key Laboratory of Trace Chemicals Sensing, Xinjiang Technical Institute
of Physics & Chemistry, Chinese Academy
of Sciences, Urumqi 830011, China
- Key
Laboratory of Improvised Explosive Chemicals for State Market Regulation, Urumqi 830011, China
| | - Xincun Dou
- Xinjiang
Key Laboratory of Trace Chemicals Sensing, Xinjiang Technical Institute
of Physics & Chemistry, Chinese Academy
of Sciences, Urumqi 830011, China
- Center
of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- Key
Laboratory of Improvised Explosive Chemicals for State Market Regulation, Urumqi 830011, China
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Yan F, Lei D, Li J, Duan H, Dou X. A Deep Understanding on the Effective Generation of Twisted Intramolecular Charge Transfer by Protonation in Thiazolo[5,4- d]thiazole Derivatives. J Phys Chem A 2023; 127:902-912. [PMID: 36669096 DOI: 10.1021/acs.jpca.2c07349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The exploration of the intrinsic relationship between the phototautomerization and photoelectric properties is of great significance for the application of the emerging novel organic materials, such as the (bi)heterocyclic thiazolo[5,4-d]thiazole derivatives (TzTz). Here, by introducing the chemical-controlling protonation, a barrierless spontaneous rotation movement of the designed TzTz derivative (2,5-diyl-amino-thiazolo[5,4-d]thiazole, DA-TzTz) was ensured through the facilitation of the excited-state intramolecular proton transfer (ESIPT) triggered twisted intramolecular charge transfer (TICT) process by the enhancement of the intramolecular hydrogen bonds, steric hindrance effect, and conjugative effect. It is further verified that the hetero S atoms could mostly effect the proton accepting ability of -N═ through comparing with the influences to the intramolecular H-bond between the protonated/nonprotonated amino groups and the -N═ atoms brought by the replacement of them with N or O atoms. As a result, the dissociation and rearrangement of the π conjugation in DA-TzTz accompanying with the variation of the optoelectronic characteristics was benefited from the establishment of the preferential charge-transfer and separation. We expect this tentative study could establish a new concept of designing an efficient charge-transfer and separation method, paving the way for the development of the TzTz derivatives and other optoelectronic organic materials.
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Affiliation(s)
- Fei Yan
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang830046, China
| | - Da Lei
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi830011, China
| | - Jiguang Li
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi830011, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Haiming Duan
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang830046, China
| | - Xincun Dou
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang830046, China.,Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi830011, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
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Li D, Lei D, Ren W, Li J, Yang X, Cai Z, Duan H, Dou X. A TD-DFT study of a class of D-π-A fluorescent probes for detection of typical oxidants. Org Biomol Chem 2023; 21:315-322. [PMID: 36524697 DOI: 10.1039/d2ob01739c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
A deep understanding of the fluorescence response mechanisms is the foundation for design-oriented strategies for D-π-A probes for trace hazardous chemicals. Here, from the perspective of electronegativity regulation of the π-bridge recognition site, an electron-donation modulation strategy involving various comprehensive evaluations of the optical and chemical properties is proposed through a series of theoretical analyses. Due to the preferential combined interaction between the π-bridge recognition site and MnO4-, high electrophilic reactivity and feasible chemical reaction energy barrier, a high-performance filter paper chip and hydrogel chip for the detection of aqueous and air-suspended environmental KMnO4 was achieved. We expect the present modulation strategy will facilitate efficient fluorescent probe design and provide a universal methodology for the exploration of functional D-π-A molecules.
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Affiliation(s)
- Dezhong Li
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.
| | - Da Lei
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Wenfei Ren
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiguang Li
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinyi Yang
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.
| | - Zhenzhen Cai
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Haiming Duan
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.
| | - Xincun Dou
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China. .,Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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Zhang T, Ren W, Xiao F, Li J, Zu B, Dou X. Engineered olfactory system for in vitro artificial nose. ENGINEERED REGENERATION 2022. [DOI: 10.1016/j.engreg.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Li J, Lei D, Ma Z, Zu B, Dou X. A General Twisted Intramolecular Charge Transfer Triggering Strategy by Protonation for Zero-Background Fluorescent Turn-On Sensing. J Phys Chem Lett 2022; 13:10871-10881. [PMID: 36394325 DOI: 10.1021/acs.jpclett.2c02847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The exploration of organic fluorescent sensing materials and mechanisms is of great significance, especially for the deep understanding of twisted intramolecular charge transfer (TICT). Here, the electron-donating ability of a chemically protonated amino group and the corresponding excitation primarily ensure the occurrence of excited-state intramolecular proton transfer. Due to the hybridization of the amino group from sp3 to sp2, the steric hindrance effect and conjugative effect together boost the rotation efficiency of the TICT process and the complete elimination of the background fluorescent signal. Furthermore, a sharp turn-on fluorescent detection of trace nitrite particulate with a diameter of 0.44 μm was realized. In addition, this protonation-induced change in the amino group configuration was verified through around nine categories of compounds. We expect this modulation of the photochemical activity path of the TICT process would greatly facilitate the exploration of novel fluorescent sensing mechanisms.
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Affiliation(s)
- Jiguang Li
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Da Lei
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Zhiwei Ma
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Baiyi Zu
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Xincun Dou
- Xinjiang Key Laboratory of Explosives Safety Science, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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