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Dou X, Zhu T, Wang Z, Sun W, Lai Y, Sui K, Tan Y, Zhang Y, Yuan WZ. Color-Tunable, Excitation-Dependent, and Time-Dependent Afterglows from Pure Organic Amorphous Polymers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2004768. [PMID: 33089564 DOI: 10.1002/adma.202004768] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/05/2020] [Indexed: 06/11/2023]
Abstract
Achieving persistent room-temperature phosphorescence (p-RTP), particularly those of tunable full-colors, from pure organic amorphous polymers is attractive but challenging. Particularly, those with tunable multicolor p-RTP in response to excitation wavelength and time are highly important but both fundamentally and technically underexplored. Here, a facile and general strategy toward color-tunable p-RTP from blue to orange-red based on amidation grafting of luminophores onto sodium alginate (SA) chains, resulting in amorphous polymers with distinct p-RTP and even impressively excitation-dependent and time-dependent afterglows is reported. p-RTP is associated with the unique semi-rigidified SA chains, effective hydrogen bonding network, and oxygen barrier properties of SA, whereas excitation-dependent and time-dependent afterglows should stem from the formation of diversified p-RTP emissive species with comparable but different lifetimes. These results outline a rational strategy toward amorphous smart luminophores with colorful, excitation-dependent, and time-dependent p-RTP, excellent solution processability, and film-forming ability for versatile applications.
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Affiliation(s)
- Xueyu Dou
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China
| | - Tianwen Zhu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China
| | - Zhengshuo Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China
| | - Wei Sun
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yueying Lai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China
| | - Kunyan Sui
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Yeqiang Tan
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Yongming Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China
| | - Wang Zhang Yuan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China
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Straub S, Lindner J, Vöhringer P. Photochemical Kinetics of a Phosphine Oxide Free Radical Initiator from Femtosecond UV-Pump/Mid-IR-Probe Spectroscopy. J Phys Chem A 2017. [PMID: 28625052 DOI: 10.1021/acs.jpca.7b04268] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Femtosecond UV-pump/mid-infrared-probe spectroscopy was used to explore in detail the primary photochemical events of the free radical initiator, (2,4,6-trimethylbenzoyl)diphenylphosphine oxide, in liquid dichloromethane solution at room temperature. Following electronic excitation of its lowest excited singlet state, S1, the radical initiator undergoes an intersystem crossing to the triplet ground state, T1, with a time constant of 135 ps. A subsequent α-cleavage occurs from the triplet state with a time constant of 15 ps and yields a trimethylbenzoyl radical together with a diphenylphosphinoyl radical. Transient absorptions from the S1 and T1 states are observed that can be assigned to the P═O stretching mode and the symmetric in-plane deformation mode of the trimethylphenyl moiety of the radical initiator.
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Affiliation(s)
- Steffen Straub
- Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität , Wegelerstraße 12, 53115 Bonn, Germany
| | - Jörg Lindner
- Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität , Wegelerstraße 12, 53115 Bonn, Germany
| | - Peter Vöhringer
- Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität , Wegelerstraße 12, 53115 Bonn, Germany
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Jia J, Sarker M, Steinmetz MG, Shukla R, Rathore R. Photochemical Elimination of Leaving Groups from Zwitterionic Intermediates Generated via Electrocyclic Ring Closure of α,β-Unsaturated Anilides. J Org Chem 2008; 73:8867-79. [DOI: 10.1021/jo8017445] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinli Jia
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881
| | - Majher Sarker
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881
| | - Mark G. Steinmetz
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881
| | - Ruchi Shukla
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881
| | - Rajendra Rathore
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881
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