Kim, Byunghoon Lee, Kyu-Tae Cho, Junhee Darshanoju, Narasimha Achary Jung, Kinam Ahn, In-Hwan Shin, Jae-Min Oh, Hyeongyeol Ki, Yeongcheol Lee, Hohjai Kwon, Seok Joon Kim, In Soo Cai, Wenshan Ahn, Kwang-Hyun Ko, Doo-Hyun 2024-01-19T14:01:15Z 2024-01-19T14:01:15Z 2022-01-10 2021-09 2195-1071 https://pubs.kist.re.kr/handle/201004/116519 Photochromic molecule-incorporated optical devices offer desirable properties for photocontrollable optical systems, including advanced optical data storage and super-resolution imaging. However, these molecules require multiple illumination sources, such as UV and visible light, for reversible photochemical reactions, which restricts their potential for advanced application. This study reports an effective strategy for modulating photoisomerization via a single near-infrared light source assisted by plasmonically enhanced photoswitchable upconversion photoluminescence (UCPL). The proposed quasi-periodic metal nanostructures to facilitate the resonance modes in the broadband region enable the substitution of the detrimental high-energy light source (i.e., UV light) with near-infrared stimuli, which is associated with UCPL enhancement of over two orders with spectrum orthogonality. To validate this concept, the accelerated reversible-photoisomerization kinetics is experimentally confirmed by three- and tenfold amplification of the PL intensities of the photochromic disulfonyldiarylethene derivatives. Further validation of the proposed strategy is performed using photodynamic imaging, which reveals accelerated photoisomerization, high photocyclization stability, and high spatial resolution. English WILEY-V C H VERLAG GMBH NEAR-INFRARED LIGHT LUMINESCENCE NANOPARTICLES LANTHANIDE DYNAMICS DIARYLETHENES FLUORESCENCE JUNCTIONS SURFACE Reversible Photochemical Switching via Plasmonically Enhanced Upconversion Photoluminescence Article 10.1002/adom.202100776 1 ADVANCED OPTICAL MATERIALS, v.9, no.17 ADVANCED OPTICAL MATERIALS 9 17 scie scopus 000661969400001 2-s2.0-85107909373 Materials Science, Multidisciplinary Optics Materials Science Optics Article NEAR-INFRARED LIGHT LUMINESCENCE NANOPARTICLES LANTHANIDE DYNAMICS DIARYLETHENES FLUORESCENCE JUNCTIONS SURFACE metal transfer photochromic materials photoswitching plasmonic nanostructures upconversion nanoparticles