Aggregation-induced emission (AIE) is a phenomenon that is observed with certain
organicluminophores (fluorescent dyes).[1][2][3]
The
photoemission efficiencies of most
organic compounds is higher in
solution than in the
solid state. Photoemission from some organic compounds follows the reverse pattern, being greater in the solid than in solution. The effect is attributed to the decreased flexibility in the solid.
Aggregation-induced emission enhancement
The phenomenon in which organic luminophores show higher
photoluminescence efficiency in the aggregated state than in solution is called aggregation-induced emission enhancement (AIEE). Some luminophores, e.g.,
diketopyrrolopyrrole-based and
sulfonamide-based luminophores, only display enhanced emission upon entering the crystalline state. That is, these luminophores are said to exhibit crystallization-induced emission enhancement (CIEE).[4][5]
Luminophores such as noble metallic nanoclusters show higher
photoluminescence efficiency in the aggregated state than homogenous
dispersion in solution. This phenomenon is known as
Aggregation-Induced Emission (AIE).[6][7]
Aggregation-induced emission polymer
Fluorescence-emission Polymer is a kind of polymer which can absorb light of certain frequency and then give out light.[8] These polymers can be applied in biomaterial area. Due to their high biocapacity and fluorescence, they can help researchers to find and mark the location of proteins. And polymers with property of aggregation-induced emission can also help to protect the healthy tissues from the harm of the medicines.[9]
^Mei, Ju; Leung, Nelson L. C.; Kwok, Ryan T. K.; Lam, Jacky W. Y.; Tang, Ben Zhong (22 October 2015). "Aggregation-Induced Emission: Together We Shine, United We Soar!". Chemical Reviews. 115 (21): 11718–11940.
doi:
10.1021/acs.chemrev.5b00263.
PMID26492387.
^Moghadam, Fatemeh Mortazavi; Rahaie, Mahdi (May 2019). "A signal-on nanobiosensor for VEGF165 detection based on supraparticle copper nanoclusters formed on bivalent aptamer". Biosensors and Bioelectronics. 132: 186–195.
doi:
10.1016/j.bios.2019.02.046.
PMID30875630.
S2CID80613434.
^Mortazavi Moghadam, Fatemeh; Bigdeli, Mohammadreza; Tamayol, Ali; Shin, Su Ryon (October 2021). "TISS nanobiosensor for salivary cortisol measurement by aptamer Ag nanocluster SAIE supraparticle structure". Sensors and Actuators B: Chemical. 344: 130160.
doi:
10.1016/j.snb.2021.130160.