Sulfato‐β‐cyclodextrin induced multivalent supramolecular directional aggregation of cyanovinylene derivatives for achieving reversible near‐infrared fluorescence DOI Creative Commons
Zhixue Liu, Haiqi Chen,

Mengdi Tian

et al.

Aggregate, Journal Year: 2024, Volume and Issue: unknown

Published: June 23, 2024

Abstract Molecular aggregation or supramolecular aggregation‐induced emission is one of the research hotspots in chemistry, biology, and materials. Herein, we report negatively charged sulfato‐β‐cyclodextrin (SCD) induced cyanovinylene derivatives (DPy‐6C) directional to form regular nanorods (DPy‐6C@SCD) through multivalent interactions, not only achieves ultraviolet‐visible absorption redshifted from 453 521 nm but also displays near‐infrared (NIR) with a large spectral redshift 135 nm. The DPy‐6C monomer presents random nanosheets weak fluorescence obtains aggregates after assembly SCD electrostatic interactions. In presence H + , DPy‐6C@SCD can further aggregate into elliptical without changes due protonation secondary amines. contrast, morphology becomes flexible sticks together upon addition OH − an blue shift 72 90‐fold intensity increase because disrupting stacking mode aggregates, thereby achieving acid‐base regulated reversible behaviors that cannot be realized by monomer. efficiently select detection volatile organic amines both liquid gas phases within 5 s at nanomolar level. Taking advantage RGB analysis calculation formula application, has been successfully used monitor various on smartphone, accompanied naked‐eye visible photoluminescence. Therefore, present provides efficient method which realizes topological transformation NIR luminescent molecular switch high sensitivity fluorescent sensing devices.

Language: Английский

Sulfato‐β‐cyclodextrin induced multivalent supramolecular directional aggregation of cyanovinylene derivatives for achieving reversible near‐infrared fluorescence DOI Creative Commons
Zhixue Liu, Haiqi Chen,

Mengdi Tian

et al.

Aggregate, Journal Year: 2024, Volume and Issue: unknown

Published: June 23, 2024

Abstract Molecular aggregation or supramolecular aggregation‐induced emission is one of the research hotspots in chemistry, biology, and materials. Herein, we report negatively charged sulfato‐β‐cyclodextrin (SCD) induced cyanovinylene derivatives (DPy‐6C) directional to form regular nanorods (DPy‐6C@SCD) through multivalent interactions, not only achieves ultraviolet‐visible absorption redshifted from 453 521 nm but also displays near‐infrared (NIR) with a large spectral redshift 135 nm. The DPy‐6C monomer presents random nanosheets weak fluorescence obtains aggregates after assembly SCD electrostatic interactions. In presence H + , DPy‐6C@SCD can further aggregate into elliptical without changes due protonation secondary amines. contrast, morphology becomes flexible sticks together upon addition OH − an blue shift 72 90‐fold intensity increase because disrupting stacking mode aggregates, thereby achieving acid‐base regulated reversible behaviors that cannot be realized by monomer. efficiently select detection volatile organic amines both liquid gas phases within 5 s at nanomolar level. Taking advantage RGB analysis calculation formula application, has been successfully used monitor various on smartphone, accompanied naked‐eye visible photoluminescence. Therefore, present provides efficient method which realizes topological transformation NIR luminescent molecular switch high sensitivity fluorescent sensing devices.

Language: Английский

Citations

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