Aggregation-mediated photo-responsive luminescence of cyanostilbene based cruciform AIEgens

Zhang, Zhibo1,2; Liu, Xiaoqing3; Feng, Yang1; Yu, Zhen-Qiang4; Wang, Lei1; Ren, Xiang-Kui2; Liu, Yi1

2021-01-21

10.1039/d0tc05131d

Journal of Materials Chemistry C   影响因子和分区

2050-7526

2050-7534

Photochromic materials have received tremendous attention owing to their unique photoresponsive behaviour and promising applications as smart materials. Herein, two cyanostilbene based AIEgens with a cruciform topology were synthesized and well characterized. Upon the addition of water, both fluorophores exhibited enhanced emission in the THF/water mixture owing to aggregate formation. In solution, the emission of these AIEgens can be gradually attenuated with blue-shifted absorption after irradiating with 365 nm UV light and recovered on exposure to 254 nm UV light. This phenomenon was attributed to the reversible E/Z isomerization of the cyanostilbene units and confirmed by NMR spectroscopy. By contrast, for the sample in the nano-aggregate or solid state, the emission can be efficiently quenched via [2+2] cycloaddition which had disrupted the conjugation backbone of the chromophore. Photochromic luminescence can also be realized by dispersing the fluorophores in a PMMA matrix and modulated by tuning their concentration in the polymer film. Meanwhile, the cruciform AIEgens also exhibited obvious mechanochromic luminescence in the solid state.

SCI ; EI

英语

其他

National Natural Science Foundation of China[21704065,21875157] ; Innovation Research Foundation of Shenzhen[JCYJ20190808115215125]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000612717600022

ROYAL SOC CHEMISTRY

20210609877320

Aggregates ; Blue shift ; Chromogenics ; Chromophores ; Fluorophores ; Luminescence ; Nuclear magnetic resonance spectroscopy ; Photochromism ; Polymer films ; Semiconducting films ; Uranium metallography ; Vanadium metallography

Highway Engineering:406 ; Metallography:531.2 ; Minor, Precious and Rare Earth Metals and Alloys:547 ; Semiconducting Materials:712.1 ; Light/Optics:741.1 ; Organic Compounds:804.1 ; Polymeric Materials:815.1

Web of Science

1.Shenzhen Univ, Guangdong Res Ctr Interfacial Engn Funct Mat, Coll Mat Sci & Engn, Shenzhen Key Lab Polymer Sci & Technol, Shenzhen 518060, Peoples R China
2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518005, Peoples R China
4.Shenzhen Univ, Ctr AIE Res, Sch Chem & Environm Engn, Shenzhen 518060, Peoples R China

Zhang, Zhibo,Liu, Xiaoqing,Feng, Yang,et al. Aggregation-mediated photo-responsive luminescence of cyanostilbene based cruciform AIEgens[J]. Journal of Materials Chemistry C,2021,9(3):975-981.

Zhang, Zhibo.,Liu, Xiaoqing.,Feng, Yang.,Yu, Zhen-Qiang.,Wang, Lei.,...&Liu, Yi.(2021).Aggregation-mediated photo-responsive luminescence of cyanostilbene based cruciform AIEgens.Journal of Materials Chemistry C,9(3),975-981.

Zhang, Zhibo,et al."Aggregation-mediated photo-responsive luminescence of cyanostilbene based cruciform AIEgens".Journal of Materials Chemistry C 9.3(2021):975-981.