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Folding‐induced Fluorescence Enhancement in a Series of Merocyanine Hetero‐Folda‐Trimers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wei X, Zhu Y, Yu X, Cai L, Ruan N, Wu L, Jia N, James TD, Huang C. Endoplasmic Reticulum Targeting Green Fluorescent Protein Chromophore-based Probe for the Detection of Viscosity. Chem Commun (Camb) 2022; 58:10727-10730. [DOI: 10.1039/d2cc00118g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The occurrence of endoplasmic reticulum (ER) stress is the main cause of a variety of biological process that are closely related with numerous diseases. The homeostasis of the ER microenvironment...
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Mehata AK, Muthu MS. Development of Supramolecules in the Field of Nanomedicines. PHARMACEUTICAL APPLICATIONS OF SUPRAMOLECULES 2022:211-239. [DOI: 10.1007/978-3-031-21900-9_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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Kim BH, Kim W, Kim T, Ko BM, Hong SJ, Lee K, Kim J, Song SH, Lee S. Hydrogen-Bonding-Mediated Molecular Vibrational Suppression for Enhancing the Fluorescence Quantum Yield Applicable for Visual Phenol Detection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:54339-54347. [PMID: 34747615 DOI: 10.1021/acsami.1c15385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
It is generally accepted that while efficient suppression of molecular vibration is inevitable for purely organic phosphors due to their long emission lifetime in the regime of 1 ms or longer, fluorophores having a lifetime in the nanoseconds regime are not sensitive to collisional quenching. Here, however, we demonstrate that a fluorophore, 2,5-bis(hexyloxy)terephthaldehyde (BHTA), capable of having hydrogen bonding (H bonding) via its two aldehyde groups can have a largely enhanced (450%) fluorescence quantum yield (QY) in amorphous poly(acrylic acid) (PAA) matrix compared to its crystalline powder. We ascribe this enhanced QY to the efficient suppression of molecular vibrations via intermolecular H bonding. We confirm this feasibility by conducting temperature-dependent fluorescence emission intensity measurement. As gaseous phenol can intervene with the H bonding between BHTA and PAA, interestingly, BHTA embedded in PAA can selectively detect gaseous phenol by a sharp fluorescence emission intensity drop that is visibly recognizable by the naked eye. The results provide an insightful molecular design strategy for a fluorophore and fluorometric sensory system design for enhanced photoluminescence QY and convenient detection of various volatile organic compounds.
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Affiliation(s)
- Bo-Hyun Kim
- Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Republic of Korea
- Division of Advanced Materials Engineering and Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 31080, Republic of Korea
| | - Wontae Kim
- Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Republic of Korea
| | - Taemin Kim
- Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Republic of Korea
| | - Byoung Min Ko
- Division of Advanced Materials Engineering and Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 31080, Republic of Korea
| | - Soon-Jik Hong
- Division of Advanced Materials Engineering and Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 31080, Republic of Korea
| | - Kangtaek Lee
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jinsang Kim
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Sung-Ho Song
- Division of Advanced Materials Engineering and Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 31080, Republic of Korea
| | - Sunjong Lee
- Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Republic of Korea
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Schulz A, Würthner F. Folding-induced Fluorescence Enhancement in a Series of Merocyanine Hetero-Folda-Trimers. Angew Chem Int Ed Engl 2021; 61:e202114667. [PMID: 34784435 PMCID: PMC9299730 DOI: 10.1002/anie.202114667] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Indexed: 12/12/2022]
Abstract
Many dyes suffer from fast non-radiative decay pathways, thereby showing only short-lived excited states and weak photoluminescence. Here we show a pronounced fluorescence enhancement for a weakly fluorescent merocyanine (MC) dye by being co-facially stacked to other dyes in hetero-folda-trimer architectures. By means of fluorescence spectroscopy (lifetime, quantum yield) the fluorescence enhancement was explained by the rigidification of the emitting chromophore in the defined foldamer architecture and the presence of a non-forbidden lowest exciton state in H-coupled hetero-aggregates. This folding-induced fluorescence enhancement (FIFE) for specific sequences of π-stacked dyes points at a viable strategy toward improved fluorophores that relates to the approach used by nature in the green fluorescent protein (GFP).
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Affiliation(s)
- Alexander Schulz
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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Tsai MS, Lee CH, Hsiao JC, Sun SS, Yang JS. Solvatochromic Fluorescence of a GFP Chromophore-Containing Organogelator in Solutions and Organogels. J Org Chem 2021; 87:1723-1731. [PMID: 34649423 DOI: 10.1021/acs.joc.1c01911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Solvatofluorochromism, a solvation effect on the fluorescence color of an organic dye, is a property generally limited to fluid solutions. We demonstrate herein the concept of solid-state solvatofluorochromism by using an organogelator (1-SG), which consists of a solvatofluorochromic green fluorescence protein (GFP) chromophore (1) and a sugar gelator (SG). While 1-SG could be located in the liquid phase or in the fibrous solid matrix of the SG gel, our results show that the one in the solid matrix but near the liquid interface has superior fluorescence stability and quantum efficiency as well as solvatofluorochromicity than the one in the liquid phase. In addition, the phenomenon of fluorescence turn-on occurs when the gel is formed in protic solvents. These features have been applied to perform multicolor fluorescence patterning, chemical vapor sensing, data encryption and decryption, and real-time fluorescence cell imaging.
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Affiliation(s)
- Meng-Shiue Tsai
- Department of Chemistry, National Taiwan University, No. 1 Sec. 4 Roosevelt Road, Taipei 10617, Taiwan.,Institute of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Taipei 11529, Taiwan
| | - Chin-Han Lee
- Institute of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Taipei 11529, Taiwan
| | - Jye-Chian Hsiao
- Institute of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Taipei 11529, Taiwan
| | - Shih-Sheng Sun
- Institute of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Taipei 11529, Taiwan
| | - Jye-Shane Yang
- Department of Chemistry, National Taiwan University, No. 1 Sec. 4 Roosevelt Road, Taipei 10617, Taiwan
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Li Z, Ji X, Xie H, Tang BZ. Aggregation-Induced Emission-Active Gels: Fabrications, Functions, and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2100021. [PMID: 34216407 DOI: 10.1002/adma.202100021] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 03/14/2021] [Indexed: 05/07/2023]
Abstract
Chromophores that exhibit aggregation-induced emission (i.e., aggregation-induced emission luminogens [AIEgens]) emit intense fluorescence in their aggregated states, but show negligible emission as discrete molecular species in solution due to the changes in restriction and freedom of intramolecular motions. As solvent-swollen quasi-solids with both a compact phase and a free space, gels enable manipulation of intramolecular motions. Thus, AIE-active gels have attracted significant interest owing to their various distinctive properties and promising application potential. Herein, a comprehensive overview of AIE-active gels is provided. The fabrication strategies employed are detailed, and the applications of AIEgens are summarized. In addition, the gel functions arising from the AIE moieties are revealed, along with their structure-property relationships. Furthermore, the applications of AIE-active gels in diverse areas are illustrated. Finally, ongoing challenges and potential means to address them are discussed, along with future perspectives on AIE-active gels, with the overall aim of inspiring research on novel materials and ideas.
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Affiliation(s)
- Zhao Li
- Institute of Engineering Medicine, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing, 100081, China
| | - Xiaofan Ji
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Huilin Xie
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518055, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518055, China
- Center for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China
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