TY - JOUR
T1 - Regulating Isolated-Molecular and Aggregated-State Phosphorescence for Multicolor Afterglow by Photoactivation
AU - Gao, Yanhua
AU - Ye, Wenpeng
AU - Qiu, Kefan
AU - Zheng, Xifang
AU - Yan, Shuanma
AU - Wang, Zhaoyu
AU - An, Zhongfu
AU - Shi, Huifang
AU - Huang, Wei
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/12/7
Y1 - 2023/12/7
N2 - Ultralong organic phosphorescence (UOP) materials have attracted considerable attention in recent years. Herein, a new type of flexible films is fabricated by doping amphipathic pyrene tetrasulfonic acid sodium salts into amorphous poly(vinyl alcohol) matrix, which enables the realization of color-tunable UOP spanning from orange-red to green after excitation light is switched off. Interestingly, precise control of the proportion of isolated-molecular and aggregated-state phosphorescence is demonstrated for colorful afterglow using photo-activation. An increase in the dynamic phosphorescence lifetime of isolated molecules is observed from 894.75 to 1735.71 ms following an 8 min irradiation under ambient conditions. The photo-activation, however, showed little influence on aggreated-state phosphorescence. This flexible and processable film exhibits versatile applications in multicolor afterglow displays, ultraviolet detection, multilevel information encryption, etc. This study not only provides a strategy for the rational regulation of UOP colors but also expands the application potential of color-tunable UOP materials.
AB - Ultralong organic phosphorescence (UOP) materials have attracted considerable attention in recent years. Herein, a new type of flexible films is fabricated by doping amphipathic pyrene tetrasulfonic acid sodium salts into amorphous poly(vinyl alcohol) matrix, which enables the realization of color-tunable UOP spanning from orange-red to green after excitation light is switched off. Interestingly, precise control of the proportion of isolated-molecular and aggregated-state phosphorescence is demonstrated for colorful afterglow using photo-activation. An increase in the dynamic phosphorescence lifetime of isolated molecules is observed from 894.75 to 1735.71 ms following an 8 min irradiation under ambient conditions. The photo-activation, however, showed little influence on aggreated-state phosphorescence. This flexible and processable film exhibits versatile applications in multicolor afterglow displays, ultraviolet detection, multilevel information encryption, etc. This study not only provides a strategy for the rational regulation of UOP colors but also expands the application potential of color-tunable UOP materials.
KW - aggregated-state phosphorescence
KW - amphipathic organic salts
KW - isolated-molecular state phosphorescence
KW - photo-activation
KW - ultralong organic phosphorescence
UR - http://www.scopus.com/inward/record.url?scp=85174957663&partnerID=8YFLogxK
U2 - 10.1002/adma.202306501
DO - 10.1002/adma.202306501
M3 - 文章
C2 - 37793797
AN - SCOPUS:85174957663
SN - 0935-9648
VL - 35
JO - Advanced Materials
JF - Advanced Materials
IS - 49
M1 - 2306501
ER -