Dithieno[3,2-<i>b</i>:2′,3′-<i>d</i>]silole-based conjugated polymers for bioimaging in the short-wave infrared region

Gu, Chuantao; Wang, Haicheng; Wang, Xiaoxia; Wen, Shuguang; Liu, Xiaoguang; Tan, Weiqiang; Qiu, Meng; Ma, Jiping

doi:10.1039/d1ra05097d

Cited by 3 publications

(1 citation statement)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The electron densities of the LUMOs are mainly distributed on the acceptor unit DPP, while the electron densities of the HOMOs are along almost the entire conjugated moiety, indicating efficient intramolecular charge transfer within the backbones of the polymers P-TB and P-TP, which is beneficial for the polymers to achieve longer absorption wavelengths. 31 The planar conformation of P-TP can weaken nonradiative transitions and enhance radiative transitions 32 but easily leads to ACQ. In contrast, the large steric hindrance brought by the twisted polymer backbone of P-TB makes it more advantageous in weakening ACQ.…”

Section: Computational Studymentioning

confidence: 99%

A rational design of polymers through donor modulation to weaken the aggregation-caused quenching effect for NIR-II fluorescence imaging

Zhu

Sun

et al. 2023

J. Mater. Chem. B

View full text Add to dashboard Cite

show abstract

Section: Computational Studymentioning

confidence: 99%

A rational design of polymers through donor modulation to weaken the aggregation-caused quenching effect for NIR-II fluorescence imaging

Zhu

Sun

et al. 2023

J. Mater. Chem. B

View full text Add to dashboard Cite

show abstract

Enhancing Near Infrared II Emission of Gold Nanoclusters via Encapsulation in Small Polymer Nanoparticles

Haye

Diriwari

Alhalabi

et al. 2022

Advanced Optical Materials

View full text Add to dashboard Cite

Reduced scattering and autofluorescence in the second near‐infrared window (NIR‐II, 1000–1700 nm) hold the promise of high‐resolution photoluminescence (PL) in vivo imaging at depths well beyond the µm scale. Yet, contrast agents with bright emission in this spectral region remain limited. Ultrasmall gold nanoclusters (AuNCs) are of particular interest for NIR‐II PL imaging. However, they exhibit limited brightness. Here, high amounts of NIR‐II emitting AuNCs are encapsulated in small polymer nanoparticles (NPs) made of poly(ethyl methacrylates). Using nanoprecipitation, loadings of up to 50 wt% can be reached, corresponding to over 10 000 AuNCs per 60 nm NP. PL quantum yields up to 1.3% and NP brightnesses up to 3.8 × 106 M−1 cm−1 are accomplished. Increasing inter‐AuNC interactions at higher loading result in a bathochromic shift of the PL emission. According to time‐resolved PL measurements, this can be attributed to distinct inter‐AuNC energy transfer pathways between the core and surface‐centered PL modes. Evaluation of the nanohybrids in tissue‐mimicking models for in vivo blood vessel imaging shows that the ultrabright and red‐shifted NIR‐II PL results in significantly improved detection sensitivity and resolution, which makes AuNC‐loaded polymer NPs highly promising candidates for advanced in vivo imaging.

show abstract

Organic conjugated polymer nanoparticles enhanced tyrosinase electrochemical biosensor for selective, sensitive and rapid detection of bisphenol A

Su,

Wu,

Chen

et al. 2024

Science of The Total Environment

View full text Add to dashboard Cite

Dithieno[3,2-b:2′,3′-d]silole-based conjugated polymers for bioimaging in the short-wave infrared region

Abstract: A D–A type polymer with a SWIR fluorescence quantum efficiency of 4.4% was obtained after structural optimization.

Cited by 3 publications

References 49 publications

A rational design of polymers through donor modulation to weaken the aggregation-caused quenching effect for NIR-II fluorescence imaging

A rational design of polymers through donor modulation to weaken the aggregation-caused quenching effect for NIR-II fluorescence imaging

Enhancing Near Infrared II Emission of Gold Nanoclusters via Encapsulation in Small Polymer Nanoparticles

Organic conjugated polymer nanoparticles enhanced tyrosinase electrochemical biosensor for selective, sensitive and rapid detection of bisphenol A

Contact Info

Product

Resources

About