TY - JOUR
T1 - Luminescence Color Tuning by Regulating Electrostatic Interaction in Light-Emitting Devices and Two-Photon Excited Information Decryption
AU - Ma, Yun
AU - Liu, Shujuan
AU - Yang, Huiran
AU - Zeng, Yi
AU - She, Pengfei
AU - Zhu, Nianyong
AU - Ho, Cheuk Lam
AU - Zhao, Qiang
AU - Huang, Wei
AU - Wong, Wai Yeung
N1 - Funding Information:
We thank Hong Kong Research Grants Council (HKBU12304715), Areas of Excellence Scheme of HKSAR (AoE/P-03/08), the Hong Kong Polytechnic University, National Program for Support of Top-Notch Young Professionals National Natural Science Foundation of China (61274018), Natural Science Foundation of Jiangsu Province of China (BK20160885), and Hong Kong Baptist University (FRG1/14-15/084) for financial support.
PY - 2017/3/6
Y1 - 2017/3/6
N2 - It is well-known that the variation of noncovalent interactions of luminophores, such as π- π interaction, metal-to-metal interaction, and hydrogen-bonding interaction, can regulate their emission colors. Electrostatic interaction is also an important noncovalent interaction. However, very few examples of luminescence color tuning induced by electrostatic interaction were reported. Herein, a series of Zn(II)-bis(terpyridine) complexes (Zn-AcO, Zn-BF4, Zn-ClO4, and Zn-PF6) containing different anionic counterions were reported, which exhibit counterion-dependent emission colors from green-yellow to orange-red (549 to 622 nm) in CH2Cl2 solution. More importantly, it was found that the excited states of these Zn(II) complexes can be regulated by changing the electrostatic interaction between Zn2+ and counterions. On the basis of this controllable excited state, white light emission has been achieved by a single molecule, and a white light-emitting device has been fabricated. Moreover, a novel type of data decryption system with Zn-PF6 as the optical recording medium has been developed by the two-photon excitation technique. Our results suggest that rationally controlled excited states of these Zn(II) complexes by regulating electrostatic interaction have promising applications in various optoelectronic fields, such as light-emitting devices, information recording, security protection, and so on.
AB - It is well-known that the variation of noncovalent interactions of luminophores, such as π- π interaction, metal-to-metal interaction, and hydrogen-bonding interaction, can regulate their emission colors. Electrostatic interaction is also an important noncovalent interaction. However, very few examples of luminescence color tuning induced by electrostatic interaction were reported. Herein, a series of Zn(II)-bis(terpyridine) complexes (Zn-AcO, Zn-BF4, Zn-ClO4, and Zn-PF6) containing different anionic counterions were reported, which exhibit counterion-dependent emission colors from green-yellow to orange-red (549 to 622 nm) in CH2Cl2 solution. More importantly, it was found that the excited states of these Zn(II) complexes can be regulated by changing the electrostatic interaction between Zn2+ and counterions. On the basis of this controllable excited state, white light emission has been achieved by a single molecule, and a white light-emitting device has been fabricated. Moreover, a novel type of data decryption system with Zn-PF6 as the optical recording medium has been developed by the two-photon excitation technique. Our results suggest that rationally controlled excited states of these Zn(II) complexes by regulating electrostatic interaction have promising applications in various optoelectronic fields, such as light-emitting devices, information recording, security protection, and so on.
UR - http://www.scopus.com/inward/record.url?scp=85014573559&partnerID=8YFLogxK
U2 - 10.1021/acs.inorgchem.6b02319
DO - 10.1021/acs.inorgchem.6b02319
M3 - Journal article
C2 - 28195717
AN - SCOPUS:85014573559
SN - 0020-1669
VL - 56
SP - 2409
EP - 2416
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 5
ER -