ICCAS OpenIR
Tuning the organic microcrystal laser wavelength of ESIPT-active compounds via controlling the excited enol* and keto* emissions
Li, Jinbiao1,2; Wu, Yishi1; Xu, Zhenzhen3; Liao, Qing3; Zhang, Haihua1,2; Zhang, Yi1,2; Xiao, Lu1,2; Yao, Jiannian1; Fu, Hongbing3,4,5
2017-12-14
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
Volume5Issue:46Pages:12235-12240
AbstractThe excited-state intramolecular proton transfer (ESIPT) process provides a real four-level system, which forms the working basis of many laser dyes in solutions but remains largely unexplored in the solid-state gain medium. Herein, we modulated the keto* and enol* emissions by switching the intramolecular hydrogen-bond to the intermolecular hydrogen-bond in the solid-state for tuning the emission colors of ESIPT-microcrystal lasers. Both model compounds of 2'-hydroxychalcone derivatives of M1 and M2 exhibit very similar dual enol* and keto* emissions in the aprotic solvents, typical for ESIPT-active molecules. When aggregated into hexagonal-plate microcrystals (HPMCs), the intramolecular hydrogen-bond ensures the photoinduced proton tautomerization from enol* to keto* tautomers, resulting in intense red fluorescence of M1 HPMCs at 647 nm from the keto* form. In sharp contrast, the introduction of an extra hydroxyl group into M2 leads to the formation of an intermolecular hydrogen bond between two adjacent molecules, which suppresses the ESIPT process in the solid-state and therefore leads to intense green emission of M2 HPMCs at 537 nm from the enol* form. The solid-state photoluminescence efficiencies of HPMCs of M1 and M2 are as high as 42% and 51%, respectively. Moreover, well-faceted HPMCs of both M1 and M2 can function as whispering-gallery mode microresonators, enabling microlasers with very low laser thresholds of 10.8 mu J cm(-2) for red-emissive M1-HPMCs and 9.4 mu J cm(-2) for green emissive M2-HPMCs.
DOI10.1039/c7tc04207h
Indexed BySCI
Language英语
WOS IDWOS:000416540600031
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/45126
Collection中国科学院化学研究所
Corresponding AuthorFu, Hongbing
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Capital Normal Univ, Dept Chem, Beijing Key Lab Opt Mat & Photon Devices, Beijing 100048, Peoples R China
4.Tianjin Univ, Dept Chem, Tianjin Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China
5.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Li, Jinbiao,Wu, Yishi,Xu, Zhenzhen,et al. Tuning the organic microcrystal laser wavelength of ESIPT-active compounds via controlling the excited enol* and keto* emissions[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(46):12235-12240.
APA Li, Jinbiao.,Wu, Yishi.,Xu, Zhenzhen.,Liao, Qing.,Zhang, Haihua.,...&Fu, Hongbing.(2017).Tuning the organic microcrystal laser wavelength of ESIPT-active compounds via controlling the excited enol* and keto* emissions.JOURNAL OF MATERIALS CHEMISTRY C,5(46),12235-12240.
MLA Li, Jinbiao,et al."Tuning the organic microcrystal laser wavelength of ESIPT-active compounds via controlling the excited enol* and keto* emissions".JOURNAL OF MATERIALS CHEMISTRY C 5.46(2017):12235-12240.
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