Visualizing Material Processing via Photoexcitation-Controlled Organic-Phase Aggregation-Induced Emission

Gu, JianFudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China. (författare)

QC 20210622
Aggregation-induced emission (AIE) has been much employed for visualizing material aggregation and self-assembly. However, water is generally required for the preparation of the AIE aggregates, the operation of which limits numerous material processing behaviors. Employing hexathiobenzene-based small molecules, monopolymers, and block copolymers as different material prototypes, we herein achieve AIE in pure organic phases by applying a nonequilibrium strategy, photoexcitation-controlled aggregation. This strategy enabled a dynamic change of molecular conformation rather than chemical structure upon irradiation, leading to a continuous aggregation-dependent luminescent enhancement (up to similar to 200-fold increase of the luminescent quantum yield) in organic solvents. Accompanied by the materialization of the nonequilibrium strategy, photoconvertible self-assemblies with a steady-state characteristic can be achieved upon organic solvent processing. The visual monitoring with the luminescence change covered the whole solution-to-film transition, as well as the in situ photoprocessing of the solid-state materials.

Yue, BingbingUniv Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China. (författare)
Baryshnikov, Gleb V.KTH,Teoretisk kemi och biologi,KTH Royal Inst Technol, Div Theoret Chem & Biol, Sch Biotechnol, SE-10691 Stockholm, Sweden.(Swepub:kth)u1qlzxjx (författare)
Li, ZhongyuFudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China. (författare)
Zhang, ManFudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China. (författare)
Shen, ShenFudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China. (författare)
Ågren, HansUppsala universitet,Kemisk och biomolekylär fysik(Swepub:uu)hanag788 (författare)
Zhu, LiangliangFudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China. (författare)
Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China. (creator_code:org_t)

Ingår i:RESEARCH: American Association for the Advancement of Science (AAAS)20212639-5274

Av författaren/redakt...: Gu, Jian; Yue, Bingbing; Baryshnikov, Gle ...; Li, Zhongyu; Zhang, Man; Shen, Shen; visa fler...; Ågren, Hans; Zhu, Liangliang; visa färre...

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