Impressive near-infrared brightness and singlet oxygen generation from strategic lanthanide–porphyrin double-decker complexes in aqueous solution. - Zhang, Jing-Xiang; Chan, Wai-Lun; Xie, Chen; Zhou, Yan; Chau, Ho-Fai; Maity, Partha; Harrison, George T.; Amassian, Aram; Mohammed, Omar F.; Tanner, Peter A.; Wong, Wai-Kwok; Wong, Ka-Leung (Light: Science & Applications, 2019)