TY - JOUR
T1 - A cyanostilbene-based molecule with aggregation-induced emission properties
T2 - amplified spontaneous emission, protonation effect and electroluminescence
AU - Dong, Yujie
AU - Ma, Suqian
AU - Zhang, Xiaoyu
AU - Qian, Jingyu
AU - Zhu, Nianyong
AU - Xu, Bin
AU - Ho, Cheuk Lam
AU - Tian, Wenjing
AU - Wong, Wai Yeung
N1 - Funding Information:
Acknowledgements This work was supported by the Hong Kong Research Grants Council (C6009-17G), the Areas of Excellence Scheme of HKSAR (AoE/P-03/08), the Clarea Au Endowed Professorship in Energy (847S) and the Hong Kong Polytechnic University (1-ZE1C). Y.J. Dong thanks the Hong Kong PhD Fellowship Scheme (HKPFS) from the Hong Kong Research Grants Council for the financial support.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - A terpyridine-substituted cyanostilbene derivative (Z)-2-(4′-([2,2′:6′,2″-terpyridin]-4′-yl)-[1,1′-biphenyl]-4-yl)-3-phenylacrylonitrile (CNSTPy) was synthesized and characterized. The compound exhibits remarkable aggregation-induced emission phenomenon and its single crystal shows a blue emission with fluorescent efficiency as high as 45%. Based on its aggregation state behavior, multiple applications towards exploring its lasing, fluorescence switching and electroluminescence properties were realized. Amplified spontaneous emission (ASE) was observed from the crystal and verified by the variable pump strip method, with a threshold value of ~1.5 mJ cm −2 . The protonation/deprotonation processes accompanied by the formation of different molecular aggregation structure result in the distinct blue and yellow emissions. Additionally, the molecule also shows a moderate electroluminescence performance.
AB - A terpyridine-substituted cyanostilbene derivative (Z)-2-(4′-([2,2′:6′,2″-terpyridin]-4′-yl)-[1,1′-biphenyl]-4-yl)-3-phenylacrylonitrile (CNSTPy) was synthesized and characterized. The compound exhibits remarkable aggregation-induced emission phenomenon and its single crystal shows a blue emission with fluorescent efficiency as high as 45%. Based on its aggregation state behavior, multiple applications towards exploring its lasing, fluorescence switching and electroluminescence properties were realized. Amplified spontaneous emission (ASE) was observed from the crystal and verified by the variable pump strip method, with a threshold value of ~1.5 mJ cm −2 . The protonation/deprotonation processes accompanied by the formation of different molecular aggregation structure result in the distinct blue and yellow emissions. Additionally, the molecule also shows a moderate electroluminescence performance.
KW - aggregation-induced emission
KW - amplified spontaneous emission
KW - cyanostilbene
KW - protonation effect
UR - http://www.scopus.com/inward/record.url?scp=85059335538&partnerID=8YFLogxK
U2 - 10.1007/s11426-018-9366-7
DO - 10.1007/s11426-018-9366-7
M3 - Journal article
AN - SCOPUS:85059335538
SN - 1674-7291
VL - 62
SP - 212
EP - 219
JO - Science China Chemistry
JF - Science China Chemistry
IS - 2
ER -