Chinese Journal of Liquid Crystals and Displays, Volume. 39, Issue 3, 299(2024)
Effect of blue-phase liquid crystals on the fluorescence properties of aggregation-induced emissive molecules
Fig. 1. Chemical structural formula of the experimental materials used
Fig. 2. Sample T8N32： （a） POM images during cooling process； （b） Temperature dependence of reflected wavelength； Sample T8N34： （c） POM images during cooling process； （d） Temperature dependence of reflected wavelength； Sample T8N36： （e） POM images during cooling process； （f） Temperature dependence of reflected wavelength； Sample T8N38： （g） POM images during cooling process； （h） Temperature dependence of reflected wavelength.
Fig. 3. Temperature dependence of the reflection wavelength of blue phase Ⅰ and blue phase Ⅱ corresponding to the blue phase system with different chiral dopant
Fig. 4. （a） PL spectra （λex=365 nm） of BPLC system with different content （mass fraction） of TPE-PPE； （b） Relationship between TPE-PPE content （mass fraction） and fluorescence intensity of BPLC system； （c） Photos of BPLC system with different content （mass fraction） of TPE-PPE under 365 nm UV light.
Fig. 5. Sample T8N32： （a） PL spectra at different temperatures； （b） Temperature dependence of PL intensity；Fluorescence and reflection spectra at （c） 77.5 ℃ and （d） 74.5 ℃； （e） Relationship between the photon band gap and fluorescence intensity of blue phase Ⅰ； （f） Photon band gap position and fluorescence intensity growth rate of BP Ⅰ and BP Ⅱ during the cooling process （λex=365 nm）.
Fig. 6. Sample T8N34： （a） PL spectra at different temperatures； （b） Temperature dependence of PL intensity； （c） Photon band gap position and fluorescence intensity growth rate of BP Ⅰ and BP Ⅱ during the cooling process （λex=365 nm）.
Fig. 7. Sample T8N36： （a） PL spectra at different temperatures； （b） Temperature dependence of PL intensity； （c） Fluorescence spectrum and reflection spectrum at 74.5 ℃； （d） Photon band gap position and fluorescence intensity growth rate of BP Ⅰ and BP Ⅱ during cooling process （λex=365 nm）.
Fig. 8. Sample T8N38： （a） PL spectra at different temperatures； （b） Temperature dependence of PL intensity （λex=365 nm）.
Fig. 9. Sample R30： （a） Temperature dependence of PL intensity； （b） Relationship between the photon band gap of BP Ⅰand its fluorescence intensity growth rate during the cooling process； Sample R35： （c） Temperature dependence of PL intensity； （d） Relationship between the photonic band gap of BP Ⅰ and the growth rate of its fluorescence intensity during the cooling process；Sample R8N34： （e） PL spectra at different temperatures； （f） Temperature dependence of PL intensity （λex=365 nm）.
Fig. 10. Schematic diagram of the fluorescence enhancement effect of BPLC system on TPE-PPE
Table 1. Composition and blue phase temperature range of sample HTG135200/R5011/C6M/TMPTA/TPE-PPE composite system
View tableView in ArticleTable 1. Composition and blue phase temperature range of sample HTG135200/R5011/C6M/TMPTA/TPE-PPE composite system
Sample No. HTG135200/% R5011/% C6M/% TMPTA/% TPE-PPE/% 蓝相温域范围/℃ T8N32 61 3.2 30 5 0.8 79.3~71.0 T8N34 60.8 3.4 30 5 0.8 77.7~70.5 T8N36 60.6 3.6 30 5 0.8 77.6~69.2 T8N38 60.4 3.8 30 5 0.8 77.0~70.1
Table 2. Composition and blue phase temperature range of sample BHR20400/R811/TPE-PPE composite system
View tableView in ArticleTable 2. Composition and blue phase temperature range of sample BHR20400/R811/TPE-PPE composite system
Sample No. BHR20400/% R811/% TPE-PPE/% 蓝相温域/℃ R30 69.2 30 0.8 55.3~42.5 R35 64.2 35 0.8 49.5~30.1
Get Citation
Copy Citation Text
Ying CHEN, Ran DUAN, Ziyan XU, Ruiqi TANG, Yingping TONG, Dongyu ZHAO. Effect of blue-phase liquid crystals on the fluorescence properties of aggregation-induced emissive molecules[J]. Chinese Journal of Liquid Crystals and Displays, 2024, 39(3): 299
Category: Research Articles
Received: Jan. 30, 2024
Accepted: --
Published Online: Apr. 29, 2024
The Author Email: Dongyu ZHAO (zhaodongyu@buaa.edu.cn)
