Changing the Behavior of Chromophores from Aggregation‐Caused Quenching to Aggregation‐Induced Emission: Development of Highly Efficient Light Emitters in the Solid State

Controlling the spatial distribution of quantum dots in nanofiber for light-harvesting devices

“…[8][9][10][11][12][13][14] For instance, QD light-emitting diodes or photovoltaic devices suffer from the inter-dot interactions of aggregates, which cause a spectral shift and a broadening in the photoluminescence of QDs as well as a decrease in the quantum yield. 10,13 Therefore, control of inter-dot spacing is critical in ensuring device performance.…”

“…[8][9][10][11][12][13][14] For instance, QD light-emitting diodes or photovoltaic devices suffer from the inter-dot interactions of aggregates, which cause a spectral shift and a broadening in the photoluminescence of QDs as well as a decrease in the quantum yield. 10,13 Therefore, control of inter-dot spacing is critical in ensuring device performance. [8][9][10]13,15 Researchers have long sought methods to control the spatial distribution of functional moieties in devices and prevent the formation of aggregates, both for fundamental research and the potential technological applications.…”

“…10,13 Therefore, control of inter-dot spacing is critical in ensuring device performance. [8][9][10]13,15 Researchers have long sought methods to control the spatial distribution of functional moieties in devices and prevent the formation of aggregates, both for fundamental research and the potential technological applications. In solid-state films in particular, it has been challenging to increase film thickness while keeping functional moieties in the monomeric state.…”

Interfacing a Tetraphenylethene Derivative and a Smart Hydrogel for Temperature-Dependent Photoluminescence with Sensitive Thermoresponse

“…Our unprecedented TR PL hydrogels should be able to enrich the potential applications of the TPE-type molecules, since they function over a broad temperature range. 4,[14][15][16][17][18][19][20][21]24 Furthermore, the present design and synthesis of the d-TPE-doped PS-co-PNIPAM/PNIPAM-co-PAA hydrogel nanoparticles should shed light on a general methodology that leads to functional hydrogels with sensitive responses to external stimuli. 15 Preparation of PS-co-PNIPAM Core Nanoparticles and PS-co-PNIPAM/PNIPAM-co-PAA Core−Shell Nanoparticles.…”

“…To maintain a desirable temperature dependence of the ring-flipping processes, the importance of having two of the four phenyl rings unsubstituted has been highlighted. 17 To implement the RIR process of the AIE molecules for immobilizationinduced emission (IIE), 3−5,12−29 several approaches have been developed, which include copolymerization with N-isopropylacrylamide (NIPAM), 21−23 encapsulation in polymers, 24,25 confinement within rigid porous metal−organic frameworks, 17,18 aggregation induced by formation of nanostructures, 26−28 and solidification at a temperature lower than the freezing point of solvent. 16,29 Favorably, the cytotoxicity of the TPE derivatives was argued to be lower than that of colloidal PL inorganic quantum dots, such as CdTe.…”