151
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Shao W, Lim CK, Li Q, Swihart MT, Prasad PN. Dramatic Enhancement of Quantum Cutting in Lanthanide-Doped Nanocrystals Photosensitized with an Aggregation-Induced Enhanced Emission Dye. NANO LETTERS 2018; 18:4922-4926. [PMID: 29936831 DOI: 10.1021/acs.nanolett.8b01724] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Applications of multiphoton processes in lanthanide-doped nanophosphors (NPs) are often limited by relatively weak and narrow absorbance. Here, the concept of an ultimate photosensitization by aggregation-induced enhanced emission (AIEE) dyes to overcome this limitation is introduced. Because AIEE dyes do not suffer from concentration quenching, they can fully cover the NP surface at high density to maximize absorbance while passivating the surface. This concept is applied to multiphoton down-conversion by quantum cutting. Specifically, coating Yb3+/Tb3+-doped NPs with an AIEE dye designed for efficient energy transfer and attachment to the NPs produces a 2260-fold enhancement of multiphoton down-conversion by quantum cutting with remarkable photostability. In a prototypical application, the quantum cutting of UV photons to near-infrared photons that are matched to the band gap of a silicon solar cell produces an average 4% increase in efficiency under concentrated solar illumination. This provides a general strategy for NP photosensitization that can be applied to both multiphoton up- and down-conversion.
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Affiliation(s)
- Wei Shao
- Department of Chemical Engineering , Zhejiang University of Technology , Hangzhou 3100314 , PR China
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152
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Abstract
Photodynamic therapy (PDT) involves the combination of non-toxic dyes called photosensitizers (PS) and harmless visible light that interact with ambient oxygen to give reactive oxygen species (ROS) that can damage biomolecules and kill cells. PDT has mostly been developed as a cancer therapy but can also be used as an antimicrobial approach against localized infections. However even the longest wavelength used for exciting PS (in the 700 nm region) has relatively poor tissue penetration, and many PS are much better excited by blue and green light. Therefore upconversion nanoparticles (UCNPs) have been investigated in order to allow deeper-penetrating near-infrared light (980 nm or 810 nm) to be used for PDT. NaYF4 nanoparticles doped with Yb3+ and Er3+ or with Tm3+ and Er3+ have been attached to PS either by covalent conjugation, or by absorption to the coating or shell (used to render the UCNPs biocompatible). Forster resonance energy transfer to the PS then allows NIR light energy to be transduced into ROS leading to cell killing and tumor regression. Some studies have experimentally demonstrated the deep tissue advantage of UCNP-PDT. Recent advances have included dye-sensitized UCNPs and UCNPs coupled to PS, and other potentially synergistic drug molecules or techniques. A variety of bioimaging modalities have also been combined with upconversion PDT. Further studies are necessary to optimize the drug-delivery abilities of the UCNPs, improve the quantum yields, allow intravenous injection and tumor targeting, and ensure lack of toxicity at the required doses before potential clinical applications.
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Affiliation(s)
- Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114 USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
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153
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Li Q, Li X, Zhang L, Zuo J, Zhang Y, Liu X, Tu L, Xue B, Chang Y, Kong X. An 800 nm driven NaErF 4@NaLuF 4 upconversion platform for multimodality imaging and photodynamic therapy. NANOSCALE 2018; 10:12356-12363. [PMID: 29694473 DOI: 10.1039/c8nr00446c] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Multimodality imaging-guided therapy based on lanthanide-doped upconversion nanoparticles (UCNPs) has become a trend in cancer theranostics. However, the overheating effect of 980 nm excitation in photodynamic therapy (PDT) and the difficulties in optimizing multimodality imaging integration within a single particle are still challenges. Herein, 800 nm driven NaErF4@NaLuF4 UCNPs have been explored for optimized multimodality imaging and near-infrared (NIR) triggered PDT. Our results confirmed that the optimal ∼5 nm shell thickness can well balance the enhancement of upconversion luminescence and the attenuation of energy transfer efficiency from Er3+ towards a photosensitizer, to achieve efficient production of singlet oxygen (1O2) for PDT under 800 nm excitation. Furthermore, the as-obtained NaErF4@NaLuF4 UCNPs showed effective and applicable performance for upconversion luminescence (UCL) imaging, X-ray computed tomography (CT), and high-field T2 magnetic resonance imaging (MRI). This nanomaterial can serve as an excellent theranostic agent for multimodality imaging and image-guided therapy.
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Affiliation(s)
- Qiqing Li
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.
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154
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Giust D, Lucío MI, El-Sagheer AH, Brown T, Williams LE, Muskens OL, Kanaras AG. Graphene Oxide-Upconversion Nanoparticle Based Portable Sensors for Assessing Nutritional Deficiencies in Crops. ACS NANO 2018; 12:6273-6279. [PMID: 29873479 DOI: 10.1021/acsnano.8b03261] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The development of innovative technologies to rapidly detect biomarkers associated with nutritional deficiencies in crops is highly relevant to agriculture and thus could impact the future of food security. Zinc (Zn) is an important micronutrient in plants, and deficiency leads to poor health, quality, and yield of crops. We have developed portable sensors, based on graphene oxide and upconversion nanoparticles, which could be used in the early detection of Zn deficiency in crops, sensing mRNAs encoding members of the ZIP-transporter family in crops. ZIPs are membrane transport proteins, some of which are up-regulated at the early stages of Zn deficiency, and they are part of the biological mechanism by which crops respond to nutritional deficiency. The principle of these sensors is based on the intensity of the optical output resulting from the interaction of oligonucleotide-coated upconversion nanoparticles and graphene oxide in the absence or presence of a specific oligonucleotide target. The sensors can reliably detect mRNAs in RNA extracts from plants using a smartphone camera. Our work introduces the development of accurate and highly sensitive sensors for use in the field to determine crop nutrient status and ultimately facilitate economically important nutrient management decisions.
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Affiliation(s)
| | | | - Afaf H El-Sagheer
- Department of Chemistry , University of Oxford, Chemistry Research Laboratory , 12 Mansfield Road , Oxford , OX1 3TA , U.K
- Chemistry Branch, Department of Science and Mathematics, Faculty of Petroleum and Mining Engineering , Suez University , Suez 43721 , Egypt
| | - Tom Brown
- Department of Chemistry , University of Oxford, Chemistry Research Laboratory , 12 Mansfield Road , Oxford , OX1 3TA , U.K
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155
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Swabeck JK, Fischer S, Bronstein ND, Alivisatos AP. Broadband Sensitization of Lanthanide Emission with Indium Phosphide Quantum Dots for Visible to Near-Infrared Downshifting. J Am Chem Soc 2018; 140:9120-9126. [DOI: 10.1021/jacs.8b02612] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Joseph K. Swabeck
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
| | - Stefan Fischer
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
| | - Noah D. Bronstein
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
| | - A. Paul Alivisatos
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California—Berkeley, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
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156
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Upconversion nanocomposite for programming combination cancer therapy by precise control of microscopic temperature. Nat Commun 2018; 9:2176. [PMID: 29872036 PMCID: PMC5988832 DOI: 10.1038/s41467-018-04571-4] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 05/03/2018] [Indexed: 12/23/2022] Open
Abstract
Combinational administration of chemotherapy (CT) and photothermal therapy (PTT) has been widely used to treat cancer. However, the scheduling of CT and PTT and how it will affect the therapeutic efficacy has not been thoroughly investigated. The challenge is to realize the sequence control of these two therapeutic modes. Herein, we design a temperature sensitive upconversion nanocomposite for CT-PTT combination therapy. By monitoring the microscopic temperature of the nanocomposite with upconversion luminescence, photothermal effect can be adjusted to achieve thermally triggered combination therapy with a sequence of CT, followed by PTT. We find that CT administered before PTT results in better therapeutic effect than other administration sequences when the dosages of chemodrug and heat are kept at the same level. This work proposes a programmed method to arrange the process of combination cancer therapy, which takes full advantage of each therapeutic mode and contributes to the development of new cancer therapy strategies. The combination of chemo and photothermal therapy is widely used to treat cancer but control of chemo and thermal effects is needed for optimized treatment. Here, the authors describe an upconversion nanoparticle which can be used for controlled sequential treatment by controlling laser power.
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157
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Cui XX, Fan Q, Shi SJ, Wen WH, Chen DF, Guo HT, Xu YT, Gao F, Nie RZ, Ford HD, Tang GH, Hou CQ, Peng B. A novel near-infrared nanomaterial with high quantum efficiency and its applications in real time in vivo imaging. NANOTECHNOLOGY 2018; 29:205705. [PMID: 29488904 DOI: 10.1088/1361-6528/aab2fa] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fluorescence imaging signal is severely limited by the quantum efficiency and emission wavelength. To overcome these challenges, novel NIR-emitting K5NdLi2F10 nanoparticles under NIR excitation was introduced as fluorescence imaging probe for the first time. The photostability of K5NdLi2F10 nanoparticles in the water, phosphate buffer saline, fetal bovine serum and living mice was investigated. The fluorescence signal was detected with depths of 3.5 and 2.0 cm in phantom and pork tissue, respectively. Fluorescence spectrum with a significant signal-to-background ratio of 10:1 was captured in living mice. Moreover, clear NIR images were virtualized for the living mice after intravenous injection. The imaging ability of nanoparticles in tumor-beard mice were evaluated, the enrichment of K5NdLi2F10 nanoparticles in tumor site due to the enhanced permeability and retention effect was confirmed. The systematic studies of toxicity, bio-distribution and in-vivo dynamic imaging suggest that these materials give high biocompatibility and low toxicity. These NIR-emitting nanoparticles with high quantum efficiency, high penetration and low toxicity might facilitate tumor identification in deep tissues more sensitively.
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Affiliation(s)
- X X Cui
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS) Xi'an Shaanxi, 710119, People's Republic of China
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158
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Qiu H, Tan M, Ohulchanskyy TY, Lovell JF, Chen G. Recent Progress in Upconversion Photodynamic Therapy. NANOMATERIALS 2018; 8:nano8050344. [PMID: 29783654 PMCID: PMC5977358 DOI: 10.3390/nano8050344] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/10/2018] [Accepted: 05/17/2018] [Indexed: 11/16/2022]
Abstract
Photodynamic therapy (PDT) is a minimally invasive cancer modality that combines a photosensitizer (PS), light, and oxygen. Introduction of new nanotechnologies holds potential to improve PDT performance. Upconversion nanoparticles (UCNPs) offer potentially advantageous benefits for PDT, attributed to their distinct photon upconverting feature. The ability to convert near-infrared (NIR) light into visible or even ultraviolet light via UCNPs allows for the activation of nearby PS agents to produce singlet oxygen, as most PS agents absorb visible and ultraviolet light. The use of a longer NIR wavelength permits light to penetrate deeper into tissue, and thus PDT of a deeper tissue can be effectively achieved with the incorporation of UCNPs. Recent progress in UCNP development has generated the possibility to employ a wide variety of NIR excitation sources in PDT. Use of UCNPs enables concurrent strategies for loading, targeting, and controlling the release of additional drugs. In this review article, recent progress in the development of UCNPs for PDT applications is summarized.
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Affiliation(s)
- Hailong Qiu
- College of Functional Crystals, Tianjin University of Technology, 300384 Tianjin, China.
| | - Meiling Tan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China.
| | - Tymish Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060 Shenzhen, China.
| | - Jonathan F Lovell
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
| | - Guanying Chen
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China.
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159
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Wang Z, Meijerink A. Dye-Sensitized Downconversion. J Phys Chem Lett 2018; 9:1522-1526. [PMID: 29522343 PMCID: PMC5942872 DOI: 10.1021/acs.jpclett.8b00516] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 03/09/2018] [Indexed: 05/29/2023]
Abstract
Splitting one high-energy photon into two lower energy photons through downconversion has been demonstrated for a variety of combinations of rare earth (RE) ions. However, the low absorption cross section of RE3+ 4f-4f transitions hampers practical application. Therefore, enhancing the absorption by sensitization is crucial. We demonstrate efficient dye-sensitized downconversion using a strong blue/UV absorbing Coumarin dye to sensitize downconversion of the Pr3+-Yb3+ couple in NaYF4 nanocrystals (NCs). Luminescence spectra and lifetime measurements reveal Förster resonant energy transfer (FRET) from Coumarin to Pr3+ in NaYF4:Pr3+Yb3+ NCs, followed by downconversion, resulting in Yb3+ IR emission with ∼30 times enhancement. The present study demonstrates the feasibility of dye-sensitized downconversion as a promising strategy to engineer strongly absorbing downconversion NCs to enhance the efficiency of photovoltaic cells.
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160
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Ning Y, Tang J, Liu YW, Jing J, Sun Y, Zhang JL. Highly luminescent, biocompatible ytterbium(iii) complexes as near-infrared fluorophores for living cell imaging. Chem Sci 2018; 9:3742-3753. [PMID: 29780506 PMCID: PMC5939605 DOI: 10.1039/c8sc00259b] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 03/18/2018] [Indexed: 12/27/2022] Open
Abstract
We report three synthetic methods to prepare biocompatible Yb3+ complexes, which displayed high NIR luminescence with quantum yields up to 13% in aqueous media. This renders β-fluorinated Yb3+ porphyrinoids a new class of NIR probes for living cell imaging including time-resolved fluorescence lifetime imaging.
Herein, we report the design and synthesis of biocompatible Yb3+ complexes for near-infrared (NIR) living cell imaging. Upon excitation at either the visible (Soret band) or red region (Q band), these β-fluorinated Yb3+ complexes display high NIR luminescence (quantum yields up to 23% and 13% in dimethyl sulfoxide and water, respectively) and have higher stabilities and prolonged decay lifetimes (up to 249 μs) compared to the β-non-fluorinated counterparts. This renders the β-fluorinated Yb3+ complexes as a new class of biological optical probes in both steady-state imaging and time-resolved fluorescence lifetime imaging (FLIM). NIR confocal fluorescence images showed strong and specific intracellular Yb3+ luminescence signals when the biocompatible Yb3+ complexes were uptaken into the living cells. Importantly, FLIM measurements showed an intracellular lifetime distribution between 100 and 200 μs, allowing an effective discrimination from cell autofluorescence, and afforded high signal-to-noise ratios as firstly demonstrated in the NIR region. These results demonstrated the prospects of NIR lanthanide complexes as biological probes for NIR steady-state fluorescence and time-resolved fluorescence lifetime imaging.
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Affiliation(s)
- Yingying Ning
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China .
| | - Juan Tang
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China .
| | - Yi-Wei Liu
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China .
| | - Jing Jing
- School of Chemistry , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | | | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China .
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161
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Li C, Xu L, Liu Z, Li Z, Quan Z, Al Kheraif AA, Lin J. Current progress in the controlled synthesis and biomedical applications of ultrasmall (<10 nm) NaREF 4 nanoparticles. Dalton Trans 2018. [PMID: 29527602 DOI: 10.1039/c8dt00258d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The design and fabrication of rare earth upconversion nanoparticle (UCNP)-based nanomedical platforms have evoked increasing interest. However, their bio-safety is always the most worrisome problem. Most nanoparticles can accumulate in the internal organs, leading to acute toxicity, a long-term inflammatory response, or even fibrosis and cancer. In contrast, ultrasmall (sub-10 nm) nanoparticles have minimal safety risk because they can escape from macrophages, pass biological barriers, and be easily degraded or excreted from the body. In this review, we mainly introduce new progress in preparation strategies, imaging and drug delivery with regards to ultrasmall UCNPs, with an emphasis on rare earth fluorides, NaREF4. Finally, we discuss the future outlook and challenges relating to ultrasmall UCNPs.
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Affiliation(s)
- Chunxia Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, P. R. China.
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162
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Zhou B, Yan L, Tao L, Song N, Wu M, Wang T, Zhang Q. Enabling Photon Upconversion and Precise Control of Donor-Acceptor Interaction through Interfacial Energy Transfer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700667. [PMID: 29593969 PMCID: PMC5867046 DOI: 10.1002/advs.201700667] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 10/19/2017] [Indexed: 05/04/2023]
Abstract
Upconverting materials have achieved great progress in recent years, however, it remains challenging for the mechanistic research on new upconversion strategy of lanthanides. Here, a novel and efficient strategy to realize photon upconversion from more lanthanides and fine control of lanthanide donor-acceptor interactions through using the interfacial energy transfer (IET) is reported. Unlike conventional energy-transfer upconversion and recently reported energy-migration upconversion, the IET approach is capable of enabling upconversions from Er3+, Tm3+, Ho3+, Tb3+, Eu3+, Dy3+ to Sm3+ in NaYF4- and NaYbF4-based core-shell nanostructures simultaneously. Applying the IET in a Nd-Yb coupled sensitizing system can also enable the 808/980 nm dual-wavelength excited upconversion from a single particle. More importantly, the construction of IET concept allows for a fine control and manipulation of lanthanide donor-acceptor interactions and dynamics at the nanometer-length scale by establishing a physical model upon an interlayer-mediated nanostructure. These findings open a door for the fundamental understanding of the luminescence dynamics involving lanthanides at nanoscale, which would further help conceive new scientific concepts and control photon upconversion at a single lanthanide ion level.
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Affiliation(s)
- Bo Zhou
- State Key Laboratory of Luminescent Materials and Devicesand Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou510641China
| | - Long Yan
- State Key Laboratory of Luminescent Materials and Devicesand Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou510641China
| | - Lili Tao
- School of Materials and EnergyGuangdong University of TechnologyGuangzhou510006China
| | - Nan Song
- State Key Laboratory of Luminescent Materials and Devicesand Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou510641China
| | - Ming Wu
- State Key Laboratory of Luminescent Materials and Devicesand Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou510641China
| | - Ting Wang
- State Key Laboratory of Luminescent Materials and Devicesand Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou510641China
| | - Qinyuan Zhang
- State Key Laboratory of Luminescent Materials and Devicesand Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou510641China
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163
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Wang S, Sun J, Zhao J, Lu S, Yang X. Photo-Induced Electron Transfer-Based Versatile Platform with G-Quadruplex/Hemin Complex as Quencher for Construction of DNA Logic Circuits. Anal Chem 2018; 90:3437-3442. [PMID: 29425022 DOI: 10.1021/acs.analchem.7b05145] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
G-quadruplex has been developed as an innovator for analytical chemistry and biomedicine due to its vibrant binding activity, structural polymorphism, and critical roles in biological regulation. Herein, a simple but versatile platform was obtained by integrating split G-quadruplex and fluorophore into a molecular beacon, where the photoinduced electron transfer could occur when the fluorophore approached the preformed G-quadruplex/hemin complexes. Such design subtly combined the G4 disruption-induced fluorescent turn-on strategy and the photoinduced electron transfer property into one platform for constructing the logic circuits. On the basis of such a universal platform, a series of binary logic gates (OR, INHIBIT, AND, and XOR), a combinatorial gate (INHIBIT-OR), and even a complex logic operation for discrimination of multiples of three from natural numbers less than ten have been successfully achieved only by employing such platform as work unit and single-strand DNAs as inputs. The set-reset function of this platform could be realized by alternatively introducing blocking and releasing strands. In addition, this platform could operate in a biological matrix stably and precisely. Therefore, such a universal platform lays the foundation for complicating the logic systems, realizing the biocomputing and also points out a new direction for target detection.
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Affiliation(s)
- Shuang Wang
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry , Changchun , Jilin 130022 , China.,University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Jian Sun
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry , Changchun , Jilin 130022 , China
| | - Jiahui Zhao
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry , Changchun , Jilin 130022 , China.,University of Chinese Academy of Sciences , Beijing 100039 , China
| | - Shasha Lu
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry , Changchun , Jilin 130022 , China.,University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Xiurong Yang
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry , Changchun , Jilin 130022 , China
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164
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Lin X, Chen X, Zhang W, Sun T, Fang P, Liao Q, Chen X, He J, Liu M, Wang F, Shi P. Core-Shell-Shell Upconversion Nanoparticles with Enhanced Emission for Wireless Optogenetic Inhibition. NANO LETTERS 2018; 18:948-956. [PMID: 29278506 DOI: 10.1021/acs.nanolett.7b04339] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Recent advances in upconversion technology have enabled optogenetic neural stimulation using remotely applied optical signals, but limited success has been demonstrated for neural inhibition by using this method, primarily due to the much higher optical power and more red-shifted excitation spectrum that are required to work with the appropriate inhibitory opsin proteins. To overcome these limitations, core-shell-shell upconversion nanoparticles (UCNPs) with a hexagonal phase are synthesized to optimize the doping contents of ytterbium ions (Yb3+) and to mitigate Yb-associated concentration quenching. Such UCNPs' emission contains an almost three-fold enhanced peak around 540-570 nm, matching the excitation spectrum of a commonly used inhibitory opsin protein, halorhodopsin. The enhanced UCNPs are utilized as optical transducers to develop a fully implantable upconversion-based device for in vivo tetherless optogenetic inhibition, which is actuated by near-infrared (NIR) light irradiation without any electronics. When the device is implanted into targeted sites deep in the rat brain, the electrical activity of the neurons is reliably inhibited with NIR irradiation and restores to normal level upon switching off the NIR light. The system is further used to perform tetherless unilateral inhibition of the secondary motor cortex in behaving mice, achieving control of their motor functions. This study provides an important and useful supplement to the upconversion-based optogenetic toolset, which is beneficial for both basic and translational neuroscience investigations.
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Affiliation(s)
- Xudong Lin
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - Xian Chen
- Department of Materials Science and Engineering, City University of Hong Kong , Kowloon, Hong Kong SAR, China
- College of Materials Science and Engineering, Shenzhen University , Shenzhen 518060, China
| | - Wenchong Zhang
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - Tianying Sun
- Department of Materials Science and Engineering, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - Peilin Fang
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - Qinghai Liao
- Department of Electrical and Computer Engineering, Hong Kong University of Science and Technology , Kowloon, Hong Kong SAR, China
| | - Xi Chen
- Department of Biomedical Science, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - Jufang He
- Department of Biomedical Science, City University of Hong Kong , Kowloon, Hong Kong SAR, China
| | - Ming Liu
- Department of Electrical and Computer Engineering, Hong Kong University of Science and Technology , Kowloon, Hong Kong SAR, China
| | - Feng Wang
- Department of Materials Science and Engineering, City University of Hong Kong , Kowloon, Hong Kong SAR, China
- Shenzhen Research Institute, City University of Hong Kong , Shenzhen 518000, China
| | - Peng Shi
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong , Kowloon, Hong Kong SAR, China
- Shenzhen Research Institute, City University of Hong Kong , Shenzhen 518000, China
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165
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Duan C, Liang L, Li L, Zhang R, Xu ZP. Recent progress in upconversion luminescence nanomaterials for biomedical applications. J Mater Chem B 2018; 6:192-209. [DOI: 10.1039/c7tb02527k] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review focuses on the biomedical applications of upconversion luminescence nanomaterials, including lanthanide-doped inorganic nanocrystals and TTA-based UCNPs.
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Affiliation(s)
- Chengchen Duan
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St. Lucia
- Australia
| | - Liuen Liang
- ARC Centre of Excellence for Nanoscale BioPhotonics
- Department of Physics and Astronomy
- Macquarie University
- Sydney
- Australia
| | - Li Li
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St. Lucia
- Australia
| | - Run Zhang
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St. Lucia
- Australia
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St. Lucia
- Australia
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166
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Li D, Ågren H, Chen G. Near infrared harvesting dye-sensitized solar cells enabled by rare-earth upconversion materials. Dalton Trans 2018; 47:8526-8537. [DOI: 10.1039/c7dt04461e] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dye-sensitized solar cells (DSSCs) have been deemed as promising alternatives to silicon solar cells for the conversion of clean sunlight energy into electricity.
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Affiliation(s)
- Deyang Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering & Key Laboratory of Micro-systems and Micro-structures
- Ministry of Education
- Harbin Institute of Technology
- 150001 Harbin
| | - Hans Ågren
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering & Key Laboratory of Micro-systems and Micro-structures
- Ministry of Education
- Harbin Institute of Technology
- 150001 Harbin
| | - Guanying Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering & Key Laboratory of Micro-systems and Micro-structures
- Ministry of Education
- Harbin Institute of Technology
- 150001 Harbin
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167
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Xiang LJ, Zhang HH, Li H, Kong L, Zhou HP, Wu JY, Tian YP, Zhang J, Mao YF. A specific HeLa cell-labelled and lysosome-targeted upconversion fluorescent probe: PEG-modified Sr 2YbF 7:Tm 3+ . NANOSCALE 2017; 9:18861-18866. [PMID: 29177302 DOI: 10.1039/c7nr07093d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, water-soluble PEG-modified Sr2YbF7:Tm3+ was prepared conveniently by a one-pot solvothermal method, where the molar ratio of Sr2+ to Yb3+ was controlled between 3 : 2 and 1 : 1. The optimum red-light emission at 677-699 nm was modulated via 0.7% Tm3+ doped under irradiation at 980 nm. Interestingly, biological experimental results showed that the PEG-modified Sr2YbF7:Tm3+ with low toxicity, excellent cell membrane permeability and high photostability can not only distinguish HeLa cells from mouse embryonic fibroblasts but also target the subcellular organelle lysosome in HeLa cells; therefore it can be anticipated that the as-prepared material would be a potential tool for cancer diagnosis.
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Affiliation(s)
- Li-Jun Xiang
- College of Chemistry and Chemical Engineering, Anhui University and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Hefei, 230601, P. R. China
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168
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Controlled Synthesis of Monodisperse Hexagonal NaYF₄:Yb/Er Nanocrystals with Ultrasmall Size and Enhanced Upconversion Luminescence. Molecules 2017; 22:molecules22122113. [PMID: 29194418 PMCID: PMC6150031 DOI: 10.3390/molecules22122113] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 11/24/2017] [Accepted: 11/29/2017] [Indexed: 11/21/2022] Open
Abstract
The ability to synthesize upconversion nanocrystals (UCNCs) with tailored upconversion luminescence and controlled size is of great importance for biophotonic applications. However, until now, limited success has been met to prepare bright, ultrasmall, and monodispersed β-NaYF4:Yb3+/Er3+ UCNCs. In this work, we report on a synthetic method to produce monodisperse hexagonal NaYF4:Yb3+/Er3+ nanocrystals of ultrasmall size (5.4 nm) through a precise control of the reaction temperature and the ratio of Na+/Ln3+/F−. We determined the optimum activator concentration of Er3+ to be 6.5 mol % for these UCNCs, yielding about a 5-fold higher upconversion luminescence (UCL) intensity than the commonly used formula of NaYF4:30% Yb3+/2% Er3+. Moreover, a thin epitaxial shell (thickness, 1.9 nm) of NaLnF4 (Ln = Y, Gd, Lu) was grown onto these ultrasmall NaYF4:Yb3+/Er3+ NCs, enhancing its UCL by about 85-, 70- and 50-fold, respectively. The achieved sub-10-nm core and core–shell hexagonal NaYF4:Yb3+/Er3+ UCNCs with enhanced UCL have strong potential applications in bioapplications such as bioimaging and biosensing.
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