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Wu B, Hu K, Wang X, Zhang G. Biomimetic Approach toward Kinetically Stable AIE-Gens under Physiological Conditions. J Phys Chem B 2023. [PMID: 37276365 DOI: 10.1021/acs.jpcb.3c01212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Many AIE-gens suffer from excessive hydrophobicity, and their kinetic stability in aqueous condition is not warranted. Here, we introduce phosphorylcholine, a zwitterionic group ubiquitously found in biological membranes, onto the tetraphenylethene core structure to yield AIE nanoparticles stable in both PBS buffer and cell culture. We also find that the AIE efficiency is critically reliant on the delicate balance between the hydrophilic phosphorylcholine and hydrophobic moieties.
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Affiliation(s)
- Bingze Wu
- Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Kan Hu
- Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Xiao Wang
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China
| | - Guoqing Zhang
- Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 230026, China
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7
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Zhao W, He Z, Peng Q, Lam JWY, Ma H, Qiu Z, Chen Y, Zhao Z, Shuai Z, Dong Y, Tang BZ. Highly sensitive switching of solid-state luminescence by controlling intersystem crossing. Nat Commun 2018; 9:3044. [PMID: 30072690 PMCID: PMC6072740 DOI: 10.1038/s41467-018-05476-y] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/09/2018] [Indexed: 11/18/2022] Open
Abstract
The development of intelligent materials, in particular those showing the highly sensitive mechanoresponsive luminescence (MRL), is desirable but challenging. Here we report a design strategy for constructing high performance On–Off MRL materials by introducing nitrophenyl groups to molecules with aggregation-induced emission (AIE) characteristic. The on–off methodology employed is based on the control of the intersystem crossing (ISC) process. Experimental and theoretical investigations reveal that the nitrophenyl group effectively opens the nonradiative ISC channel to impart the high sensitivity and contrast On–Off behavior. On the other hand, the twisted AIE luminogen core endows enhanced reversibility and reduces the pressure required for the luminescence switching. Thin films can be readily fabricated from the designed materials to allow versatile applications in optical information recording and haptic sensing. The proposed design strategy thus provides a big step to expand the scope of the unique On–Off MRL family. The development of intelligent materials, in particular those showing the highly sensitive mechanoresponsive luminescence (MRL), remains challenging. Here the authors report a strategy for constructing high performance On-Off MRL materials by introducing nitrophenyl groups to molecules with aggregation-induced emission characteristic.
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Affiliation(s)
- Weijun Zhao
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, No. 19, XinJieKouWai Street, Beijing, 100875, China.,Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Zikai He
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China. .,School of Science, Harbin Institute of Technology, Shenzhen, HIT Campus of University Town, Shenzhen, 518055, China.
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China.,NSFC Center for Luminescence from Molecular Aggregates, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou, 510640, China.,HKUST Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518055, China
| | - Huili Ma
- Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211800, China
| | - Zijie Qiu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China.,NSFC Center for Luminescence from Molecular Aggregates, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou, 510640, China.,HKUST Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518055, China
| | - Yuncong Chen
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China.,NSFC Center for Luminescence from Molecular Aggregates, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou, 510640, China.,HKUST Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518055, China
| | - Zheng Zhao
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China.,NSFC Center for Luminescence from Molecular Aggregates, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou, 510640, China.,HKUST Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518055, China
| | - Zhigang Shuai
- Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yongqiang Dong
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, No. 19, XinJieKouWai Street, Beijing, 100875, China.
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China. .,NSFC Center for Luminescence from Molecular Aggregates, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou, 510640, China. .,HKUST Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518055, China.
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12
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Sun W, Wang Z, Wang T, Yang L, Jiang J, Zhang X, Luo Y, Zhang G. Protonation-Induced Room-Temperature Phosphorescence in Fluorescent Polyurethane. J Phys Chem A 2017; 121:4225-4232. [PMID: 28528553 DOI: 10.1021/acs.jpca.7b01711] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Room-temperature phosphorescence (RTP) from purely organic systems is of practical importance in biological imaging, oxygen sensing and displaying technologies. The key step to obtaining RTP from organic molecules is efficient intersystem crossing (ISC), which is usually low compared to inorganic materials. Here we show that protonation of a dye molecule, a thioflavin derivative, in strongly polar polyurethane can be used to effectively harness RTP. Prior to protonation, the predominant transition is π-π* for the polymer, which has nearly undetectable RTP due to the large singlet-triplet energy splitting (0.87 eV); when Brønsted acids are gradually added to the system, increasingly strong RTP is observed due to the presence of a new intramolecular charge-transfer state (ICT). The ICT state serves to lower the singlet-triplet energy gap (0.46 eV). The smaller gap results in more efficient ISC and thus strong RTP under deoxygenated conditions. The thioflavin-polyurethane system can be tuned via proton concentration and counterions and opens new doors for RTP-based polymeric sensors and stimuli-responsive materials.
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Affiliation(s)
- Wei Sun
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, 230026 Anhui, P. R. China
| | - Zhaowu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui, 230026, P. R. China.,Innovation Center of Chemistry for Energy Materials, Department of Chemical Physics, University of Science and Technology of China , Hefei, 230026 Anhui, P. R. China
| | - Tao Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, 230026 Anhui, P. R. China
| | - Li Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui, 230026, P. R. China.,Innovation Center of Chemistry for Energy Materials, Department of Chemical Physics, University of Science and Technology of China , Hefei, 230026 Anhui, P. R. China
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui, 230026, P. R. China.,Innovation Center of Chemistry for Energy Materials, Department of Chemical Physics, University of Science and Technology of China , Hefei, 230026 Anhui, P. R. China
| | - Xingyuan Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, 230026 Anhui, P. R. China
| | - Yi Luo
- Innovation Center of Chemistry for Energy Materials, Department of Chemical Physics, University of Science and Technology of China , Hefei, 230026 Anhui, P. R. China
| | - Guoqing Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui, 230026, P. R. China
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