Luminescent carbon dots with concentration-dependent emission in solution and yellow emission in solid state

Ba, Xiao-Xu; Zhang, Lu; Yin, Yu-Lin; Jiang, Feng‐Lei; Jiang, Peng; Liu, Yi

doi:10.1016/j.jcis.2020.01.007

Cited by 66 publications

(41 citation statements)

References 53 publications

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“…However, many researchers have caught a special phenomenon named concentration‐dependent fluorescence occurring in some CPDs. [ 93–100 ] That is, except for the decrease of luminescence intensity, the emission wavelength will also red‐shift with the increase of the concentration. To a large extent, concentration‐dependent fluorescence is a reflection of AIE in CPDs.…”

Section: Special Phenomena Of Luminescence Originated From Aggregatio...mentioning

confidence: 99%

Section: Special Phenomena Of Luminescence Originated From Aggregatio...mentioning

confidence: 99%

“…synthesized CPDs that own concentration‐dependent PL emission accompanied by self‐assembly behavior in solution (Figure 7B). [ 93 ] Based on the characterization results, they proposed that with the concentration of CPDs rising in solution, π–π stacking interaction was restrained while electron redistribution was induced. Consequently, a localized state caused by electron rearrangement gradually became the predominant emission state, resulting in the PL emission shifting to long‐wavelength region.…”

Section: Special Phenomena Of Luminescence Originated From Aggregatio...mentioning

confidence: 99%

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Aggregation and luminescence in carbonized polymer dots

et al. 2022

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The aggregate luminescence behavior of organic luminescent materials has been studied extensively. As a new kind of luminescent nanomaterials, carbonized polymer dots (CPDs) not only inherit the stability and biocompatibility of carbon materials, but also possess the luminescence tunability, water solubility, and high photoluminescence quantum yield of organic luminescent materials, rendering them a strong candidate for the next generation of light-emitting materials. Previously, people mainly understood its luminescence from the perspective of carbon materials, but some luminescence mechanisms are still unclear. In this review, we discuss the luminescence mechanism by referring to organic luminescent materials with emphasis on their aggregation behavior. Firstly, three representative aggregate luminescence phenomena of organic luminescent materials are briefly introduced. Chromophores present in CPDs are elaborated to further discuss the potential interactions between them, with emphasis on the role of crosslinked polymer networks. On this basis, some special luminescence phenomena of CPDs in the aggregate state are summarized, and relevant mechanisms are discussed in detail to consolidate relevant statements.

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Section: Special Phenomena Of Luminescence Originated From Aggregatio...mentioning

confidence: 99%

Section: Special Phenomena Of Luminescence Originated From Aggregatio...mentioning

confidence: 99%

Section: Special Phenomena Of Luminescence Originated From Aggregatio...mentioning

confidence: 99%

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Aggregation and luminescence in carbonized polymer dots

et al. 2022

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“…[132] In addition, CDs exhibit unique tunable photoluminescence by controlling the chemical structure, size, shape, functional groups, and heteroatomic doping, with a broadband photoluminescence from deep ultraviolet (DUV) to NIR. [133][134][135] For example, Lau and co-workers reported layered nitrogendoped graphene quantum dots (GQDs) with changeable sizes possessing a broadband emission from 300 to >1000 nm (Figure 2d). [136] Contrastively, strong photoluminescence of CDs has been mostly demonstrated in the blue and green spectral regions.…”

Section: Perovskitesmentioning

confidence: 99%

Recent Progress in Luminous Particle‐Encapsulated Host–Guest Metal‐Organic Frameworks for Optical Applications

Guo

Yin

et al. 2021

Advanced Optical Materials

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“…Very recently, another concentration sensitive CPDs have been fabricated by hydrothermal treatment of citric acid in the presence of ammonium hydroxide. [ 47 ] Bright yellow PL is observed in solid state in the absence of additional matrix and the PL of CPDs in aqueous solution can be regulated from blue to green through tuning their concentration (Figure 4b). The bathochromic shift of PL wavelength is derived from self‐assemble behavior of CPDs at higher concentration.…”

Section: The Pl Mechanism Of Cpdsmentioning

confidence: 99%

The Behavior of Carbonized Polymer Dots at the Nano‐Bio Interface and Their Luminescent Mechanism: A Physical Chemistry Perspective

Liu

2021

Chin. J. Chem.

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Carbonized polymer dots (CPDs) have been widely applied in biomedical fields, such as imaging, diagnosis and drug delivery. Since the complex, non‐equilibrated and dynamic nature of biological systems inevitably affect the predesigned properties of CPDs, then efficiency and ultimate outcome of CPDs in biological identity will be transformed by the ubiquitous nano‐bio interactions. Herein, our recent progress about elucidating the behavior of CPDs at nano‐bio interface from the perspective of physical chemistry has been summarized in the review, mainly at the bio‐macromolecular, cellular membrane and cellular levels, which is crucial for characterize their relative cytotoxicity and clinical transformation. Moreover, we mainly focused on the quantitative relationship of nano‐bio interactions between CPDs with biological identity and related thermodynamics parameters during this process is also obtained from advanced isothermal titration calorimetry technique. Finally, our recent study about the photoluminescence origin is also included in this review, which favors modulating the photoluminescence of CPDs. What is the most favorite and original chemistry developed in your research group? Chemical thermodynamic nature of chemical and biological process. How do you get into this specific field? Could you please share some experiences with our readers? In 2003, several articles from Science, Nature and Nature Biotechnology discussed the potential side effects of nanomaterials on the human health and environment. At the same time, Prof. Daiwen Pang developed QDs for biolabling, and I (Prof. Yi Liu) began to pay attention to the effect of QDs on living things. In 2006, we obtained the Innovation Research Groups of NSFC (20621502), and in this project, I was responsible for the biological effect of nanoprobe. How do you keep balance between research and family? 90% of my time for research work, and 10% of my time for family things. How do you supervise your students? First, according to the students’ interests, I will give them some new and important papers to read, and then discuss with them about their research field. We will discuss the research progress at any time, and we have seminar every week. What is the most important personality for scientific research? Curiosity, power of understanding. What's your hobbies? What's your favorite book(s)? My hobbies are reading and badminton. My favorite books are Physical Chemistry (Edited by Xiancai Fu) and Organic Chemistry (4th Edited by David Klein).

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Luminescent carbon dots with concentration-dependent emission in solution and yellow emission in solid state

Cited by 66 publications

References 53 publications

Aggregation and luminescence in carbonized polymer dots

Aggregation and luminescence in carbonized polymer dots

Recent Progress in Luminous Particle‐Encapsulated Host–Guest Metal‐Organic Frameworks for Optical Applications

The Behavior of Carbonized Polymer Dots at the Nano‐Bio Interface and Their Luminescent Mechanism: A Physical Chemistry Perspective

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