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Huang CH, Wu CC, Li EY, Chou PT. Quest for singlet fission of organic sulfur-containing systems in the higher lying singlet excited state: application prospects of anti-Kasha's rule. Phys Chem Chem Phys 2023; 25:9115-9122. [PMID: 36928330 DOI: 10.1039/d3cp00298e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
In this study, we explore the possibilities of the deactivating pathways of organic thione containing systems through first-principles calculations. We particularly pay attention to the second lying singlet excited state, S2, due to its large energy difference from the lowest lying S1 state in the sulfur-containing systems. Several theoretical models including the previously synthesized thiones and the strategically designed molecules are investigated to search for the basic conjugation unit that exhibits the prospect of S2 fission. Various molecular motifs and different substituents are combined to maneuver the relative alignment of the relevant low excited energy states. The results lead us to conclude that the thione derivatives, under rational and delicate molecular designs, may be engineered to possess a sufficiently high S2-S1 energy gap as high as 2 eV and that these systems may exhibit S2 fission to triplet excitons in the red to near infrared region.
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Affiliation(s)
- Chun-Hao Huang
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan.
| | - Chi-Chi Wu
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan. .,Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
| | - Elise Y Li
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan.
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
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Prompt and Long-Lived Anti-Kasha Emission from Organic Dyes. Molecules 2021; 26:molecules26226999. [PMID: 34834093 PMCID: PMC8623836 DOI: 10.3390/molecules26226999] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 11/17/2022] Open
Abstract
Anti-Kasha behavior has been the subject of intense debate in the last few years, as demonstrated by the high number of papers appearing in the literature on this topic, dealing with both mechanistic and applicative aspects of this phenomenon. Examples of anomalous emitters reported in the last 10 years are collected in the present review, which is focused on strictly anti-Kasha organic molecules displaying radiative deactivation from Sn and/or Tn, with n greater than 1.
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Behera SK, Park SY, Gierschner J. Duale Emission: Klassen, Mechanismen und Bedingungen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202009789] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Santosh Kumar Behera
- Madrid Institute for Advanced Studies IMDEA Nanociencia Ciudad Universitaria de Cantoblanco C/ Faraday 9 28049 Madrid Spanien
| | - Soo Young Park
- Laboratory of Supramolecular Optoelectronic Materials and Research Institute of Advanced Materials (RIAM) Department of Materials Science and Engineering Seoul National University ENG 445 Seoul 08826 Korea
| | - Johannes Gierschner
- Madrid Institute for Advanced Studies IMDEA Nanociencia Ciudad Universitaria de Cantoblanco C/ Faraday 9 28049 Madrid Spanien
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Behera SK, Park SY, Gierschner J. Dual Emission: Classes, Mechanisms, and Conditions. Angew Chem Int Ed Engl 2020; 60:22624-22638. [PMID: 32783293 DOI: 10.1002/anie.202009789] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/10/2020] [Indexed: 12/28/2022]
Abstract
There has been much interest in dual-emission materials in the past few years for materials and life science applications; however, a systematic overview of the underlying processes is so-far missing. We resolve this issue herein by classifying dual-emission (DE) phenomena as relying on one emitter with two emitting states (DE1), two independent emitters (DE2), or two correlated emitters (DE3). Relevant DE mechanisms for materials science are then briefly described together with the electronic and/or geometrical conditions under which they occur. For further reading, references are given that offer detailed insight into the complex mechanistic aspects of the various DE processes or provide overviews on materials families or their applications. By avoiding ambiguities and misinterpretations, this systematic, insightful Review might inspire future targeted designs of DE materials.
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Affiliation(s)
- Santosh Kumar Behera
- Madrid Institute for Advanced Studies, IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/ Faraday 9, 28049, Madrid, Spain
| | - Soo Young Park
- Laboratory of Supramolecular Optoelectronic Materials and Research Institute of Advanced Materials (RIAM), Department of Materials Science and Engineering, Seoul National University, ENG 445, Seoul, 08826, Korea
| | - Johannes Gierschner
- Madrid Institute for Advanced Studies, IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/ Faraday 9, 28049, Madrid, Spain
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Liu ZY, Hu JW, Huang CH, Huang TH, Chen DG, Ho SY, Chen KY, Li EY, Chou PT. Sulfur-Based Intramolecular Hydrogen-Bond: Excited-State Hydrogen-Bond On/Off Switch with Dual Room-Temperature Phosphorescence. J Am Chem Soc 2019; 141:9885-9894. [DOI: 10.1021/jacs.9b02765] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zong-Ying Liu
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan, Republic of China
| | - Jiun-Wei Hu
- Department of Chemical Engineering, Feng Chia University, Taichung, 40724 Taiwan, Republic of China
| | - Chun-Hao Huang
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677 Taiwan, Republic of China
| | - Teng-Hsing Huang
- Department of Chemical Engineering, Feng Chia University, Taichung, 40724 Taiwan, Republic of China
| | - Deng-Gao Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan, Republic of China
| | - Ssu-Yu Ho
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan, Republic of China
| | - Kew-Yu Chen
- Department of Chemical Engineering, Feng Chia University, Taichung, 40724 Taiwan, Republic of China
| | - Elise Y. Li
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677 Taiwan, Republic of China
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan, Republic of China
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Rizzi V, Matera S, Semeraro P, Fini P, Cosma P. Interactions between 4-thiothymidine and water-soluble cyclodextrins: Evidence for supramolecular structures in aqueous solutions. Beilstein J Org Chem 2016; 12:549-63. [PMID: 27340447 PMCID: PMC4901997 DOI: 10.3762/bjoc.12.54] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 03/04/2016] [Indexed: 01/12/2023] Open
Abstract
Since several years the inclusion of organic compounds (guests) within the hydrophobic cavity (host) of cyclodextrins (CDs) has been the subject of many investigations. Interestingly, the formation of inclusion complexes could affect the properties of the guest molecules and, for example, the influence of the delivery system can be a method to improve/change the photochemical behavior of the guest. In particular, very recent studies have shown the protective role of CDs preventing the degradation of the encapsulated guest. Starting from this consideration, in this work, only the structure and complexation mode of the inclusion complexes involving 4-thiothymidine (S(4)TdR, a known photosensitizer) and five CDs, namely 2-hydroxypropyl-α-cyclodextrin (2-HP-α-CD), 2-hydroxypropyl-β-cyclodextrin (2-HP-β-CD), 2-hydroxypropyl-γ-cyclodextrin (2-HP-γ-CD), heptakis-(2,6-di-O-methyl)-β-cyclodextrin (DIMEB CD) and heptakis-(2,3,6-tri-O-methyl)-β-cyclodextrin (TRIMEB CD) were investigated by different spectroscopic techniques (UV-vis, FTIR-ATR, (1)H NMR) and cyclic voltammetry analysis (CV). This work is necessary for a prospective research on the photoreactivity of S(4)TdR in aqueous environment and in the presence of CDs to prevent its degradation under irradiation. UV-vis, FTIR-ATR and CV measurements suggested the formation of supramolecular structures involving the employed CDs and mainly the pyrimidine ring of S(4)TdR. (1)H NMR analyses confirmed such indication, unveiling the presence of inclusion complexes. The strongest and deepest interactions were suggested when TRIMEB and DIMEB CDs were studied. The S(4)TdR affinity towards CDs was also evaluated by using the Benesi-Hildebrand (B-H) equation at 25 °C employing CV and (1)H NMR methods. The stoichiometry of the interaction was also inferred and it appears to be 1:1 for all examined CDs.
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Affiliation(s)
- Vito Rizzi
- Università degli Studi “Aldo Moro” di Bari, Dipartimento di Chimica Chimica, Via Orabona, 4, 70126 Bari, Italy
| | - Sergio Matera
- Università degli Studi “Aldo Moro” di Bari, Dipartimento di Chimica Chimica, Via Orabona, 4, 70126 Bari, Italy
| | - Paola Semeraro
- Università degli Studi “Aldo Moro” di Bari, Dipartimento di Chimica Chimica, Via Orabona, 4, 70126 Bari, Italy
| | - Paola Fini
- Consiglio Nazionale delle Ricerche CNR-IPCF, UOS Bari, Via Orabona, 4, 70126 Bari, Italy
| | - Pinalysa Cosma
- Università degli Studi “Aldo Moro” di Bari, Dipartimento di Chimica Chimica, Via Orabona, 4, 70126 Bari, Italy
- Consiglio Nazionale delle Ricerche CNR-IPCF, UOS Bari, Via Orabona, 4, 70126 Bari, Italy
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Lessa JA, Ferraz KSO, Guerra JC, de Miranda LF, Romeiro CFD, Souza-Fagundes EM, Barbeira PJS, Beraldo H. Spectroscopic and electrochemical characterization of gold(I) and gold(III) complexes with glyoxaldehyde bis(thiosemicarbazones): cytotoxicity against human tumor cell lines and inhibition of thioredoxin reductase activity. Biometals 2012; 25:587-98. [DOI: 10.1007/s10534-012-9547-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 04/03/2012] [Indexed: 10/28/2022]
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