Designing a sustainable fluorescent targeting probe for superselective nucleus imaging

Wang, Liang; Li, Ming; Li, Yongle; Wu, Bin; Chen, Hailong; Wang, Ruining; Xu, Tao; Guo, Huazhang; Li, Weitao; Joyner, Jarin; Shen, Xing‐Can; Le, Mengying; Vajtai, Róbert; Ajayan, Pulickel M.; Ren, Wei; Wu, Minghong

doi:10.1016/j.carbon.2021.04.099

Cited by 33 publications

(22 citation statements)

References 45 publications

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“…Besides, the efficient π conjugated system, together with electron-donating groups (−NH 2 and −OH) and an electron-accepting group (−COOH) on the surface of the O-CQDs originated from the precursors, may form a specific D-π-A structure to account for the robust solvatochromic effect . More importantly, O-CQDs in different solvents exhibit excitation-independent emission with excitation from 360 to 520 nm, which is like the majority of previously reported CQDs. − …”

Section: Resultssupporting

confidence: 63%

One-Pot Synthesis of Orange Emissive Carbon Quantum Dots for All-Type High Color Rendering Index White Light-Emitting Diodes

Guo

Liu

Shen

et al. 2022

ACS Sustainable Chem. Eng.

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The challenges of toxicity and stability of traditional long-wavelength emitting luminescent materials undoubtedly restrain their widespread applications. Some remedial proposals do not fundamentally solve these problems. So, the development of new types of long-wavelength emitting luminescent materials has become a new trend. Herein, orange emissive carbon quantum dots (O-CQDs) are successfully prepared by a simple one-step solvothermal approach using 1-amino-2-naphthol hydrochloride and citric acid (CA). Interestingly, O-CQDs can always be achieved by the regulation of different reaction conditions (e.g., CA concentration, temperature, and reaction times), which is closely related to the fixed structure of O-CQDs inherited from the used precursor. An O-CQD displays its homogeneous size distribution with an average size of 2.5 nm and obtains a high-graphitoid sp 2 hybrid architecture. Impressively, O-CQDs exhibit remarkable photoluminescent (PL) properties, including excitation-independent behavior, thermostability, photostability, and the robust nonsolvatochromic effect, in different solvents due to their efficient π-conjugated system. These excellent properties lay the optical foundation of O-CQDs for the construction of high-performance white-light-emitting diode (WLED) devices. More importantly, O-CQDs are employed as a light regulator combined with yellow emissive CQDs to form the phosphor, and then CQD phosphorbased all-type WLEDs with a high color rendering index (CRI, ≥81) are realized. This work provides a new avenue for the exploration of low-cost, environment-friendly, and high-performance CQD phosphor-based all-type WLEDs using long-wavelength emitting CQDs as a light regulator.

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Section: Resultssupporting

confidence: 63%

One-Pot Synthesis of Orange Emissive Carbon Quantum Dots for All-Type High Color Rendering Index White Light-Emitting Diodes

Guo

Liu

Shen

et al. 2022

ACS Sustainable Chem. Eng.

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“…It is proposed that metal–organic frameworks (MOFs) could serve as an ideal host to activate RTP in CDs. MOFs are porous structures that consist of rigid metal ions bridged by flexible organic ligands and have led to the creation of various new photonic functions by offering nanospatial sites for various light emitters. − Compared with nonporous host matrices like polymers and inorganic salts, MOFs can offer relatively rigid nanoconfinement spaces to suppress nonradiative triplet transitions. , The presence of metal elements in MOFs can accelerate ISC through spin–orbit coupling enhancement, thus facilitating efficient phosphorescence emission. , Additionally, the nanoconfinement offered by MOFs can provide a solution for tailoring the afterglow lifetime in a wide range . Therefore, the use of MOFs is a promising strategy to activate and purposely engineer the RTP properties of CDs to meet the requirements of advanced nanophotonic applications.…”

Section: Introductionmentioning

confidence: 99%

Metal–Organic Framework-Activated Full-Color Room-Temperature Phosphorescent Carbon Dots with a Wide Range of Tunable Lifetimes for 4D Coding Applications

Wang

Shen

et al. 2022

J. Phys. Chem. C

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Carbon dots (CDs) that simultaneously exhibit fullcolor and wide-range lifetime-tunable room-temperature phosphorescence (RTP) are of particular interest for potential applications in encryption and information security. However, achieving such CDs remains a great challenge thus far. This work reports on the development of a straightforward host−guest approach, where a metal−organic framework (MOF) host acts as an RTP activator of fluorescent CDs, with the RTP color dependent on the fluorescent component. The developed CDs@ MOF composites exhibited RTP with a tunable emission wavelength from blue (478 nm) to red (631 nm), while the lifetime was tunable from 85.67 to 1064.21 ms. As far as is known, this is the report of CD-based RTP materials with simultaneous full-color and wide-range lifetime-tunable properties for the first time. In comparison to conventional 3D coding applications of CDs, the wide-range lifetime-tunable property allows for the creation of an additional dimension in encryption. Thus, the developed RTP CDs@MOF composites have potential as writable security inks for advanced 4D coding applications. This study paves a path for development of RTP CD-based nanomaterials with multiple controllable factors to meet the requirements of advanced applications.

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“…Notably, the size of CDs is less than 10 nm [ 14 ], which displays an extraordinary side effect [ 15 , 16 , 17 , 18 ]. The marginal ratio of the side positions of the CDs is far beyond the other carbon materials [ 19 , 20 , 21 ]. Furthermore, most of the synthesis reactions for the CDs are mainly solvothermal or hydrothermal approaches, which easily realize functionalized and doped CDs [ 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction

et al. 2022

Molecules

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For the sake of the oxygen reduction reaction (ORR) catalytic performance, carbon dots (CDs) doped with metal atoms have accelerated their local electron flow for the past few years. However, the influence of CDs doped with metal atoms on binding sites and formation mechanisms is still uncertain. Herein, Co,N-doped CDs were facilely prepared by the low-temperature polymerization–solvent extraction strategy from EDTA-Co. The influence of Co doping on the catalytic performance of Co-CDs was explored, mainly in the following aspects: first, the pyridinic N atom content of Co-CDs significantly increased from 4.2 to 11.27 at% compared with the CDs, which indicates that the Co element in the precursor is advantageous in forming more pyridinic-N-active sites for boosting the ORR performance. Second, Co-CDs are uniformly distributed on the surface of carbon black (CB) to form Co-CDs@CB by the facile hydrothermal route, which can expose more active sites than the aggregation status. Third, the highest graphite N content of Co-CDs@CB was found, by limiting the current density of the catalyst towards the ORR. Composite nanomaterials formed by Co and CB are also used as air electrodes to manufacture high-performance zinc–air batteries. The battery has good cycle stability and realizes stable charges and discharges under different current densities. The outstanding catalytic activity of Co-CDs@CB is attributed to the Co,N synergistic effect induced by Co doping, which pioneer a new metal doping mechanism for gaining high-performance electrocatalysts.

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Designing a sustainable fluorescent targeting probe for superselective nucleus imaging

Cited by 33 publications

References 45 publications

One-Pot Synthesis of Orange Emissive Carbon Quantum Dots for All-Type High Color Rendering Index White Light-Emitting Diodes

One-Pot Synthesis of Orange Emissive Carbon Quantum Dots for All-Type High Color Rendering Index White Light-Emitting Diodes

Metal–Organic Framework-Activated Full-Color Room-Temperature Phosphorescent Carbon Dots with a Wide Range of Tunable Lifetimes for 4D Coding Applications

Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction

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