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Compounds consisting of coplanar π-conjugated B_(3)O_(6)-typed structures:An emerging source of ultraviolet nonlinear optical materials

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Chinese Journal of Structural Chemistry 2023年第1期42卷 64-73页

作者： lingli Wu Huixin Fan chensheng lin Min Luo Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China University of the Chinese Academy of Sciences Beijing100049China

Nonlinear optical(NLO)materials as a crucial part of the laser science have attracted increasing attention from researchers because of their wide applications in information storages,modern science and technologies,et *** on the anionic group theory,theπ-conjugated 6-membered rings(6-MRs),B_(3)O_(6)-typed structures have key contributions to the superior optical properties ofβ-Ba_(2)B_(2)O_(4)(β-BBO).In recent years,the organic coplanarπ-conjugated B_(3)O_(6)-typed structures have caught researchers'attention due to similar configurations to the(B_(3)O_(6))groups,which are the potential sources for expending the(B_(3)O_(6))groups with outstanding optical *** to know,researchers have obtained many ultraviolet(UV)NLO crystals with excellent properties withπ-conju-gated B_(3)O_(6)-typed ***,these B_(3)O_(6)-typed groups could be divided into different categories according to the atoms constituting the 6-MRs:(H_(x)C_(3)N_(3)O_(3))^(x-3)(x=0-3)(cyanurate ion),(H_(x)C_(4)N_(2)O_(3))^(x-4)(x=2,3)(barbi-turate ion),(C_(3)H_(7)N_(6))^(+)(melamine ion),(C_(5)H_(6)ON)^(+)(4-hydroxypyridine cation),and(C_(4)H_(6)N_(3))^(+)(2-amino-pyrimidinium cation).In this review,we introduced the research advances of NLO materials withπ-conjugated B_(3)O_(6)-typed groups,and summarized the crystal structures,synthetic methods,optical performances,as well as the relationships between structures and *** work provided a clear perspective for understanding the coplanarπ-conjugated B_(3)O_(6)-typed groups with their optical functional properties and promote the searches to develop potential NLO functional crystals.

关键词： NLO crystals B_(3)O_(6)-typed structures π-conjugated Anionic group theory

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FGF8-mediated signaling regulates tooth developmental pace during odontogenesis

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Journal of Genetics and Genomics 2022年第1期49卷 40-53页

作者： chensheng lin Ningsheng Ruan linjun Li Yibin Chen Xiaoxiao Hu YiPing Chen Xuefeng Hu Yanding Zhang Fujian Key Laboratory of Developmental and Neural Biology and Southern Center for Biomedical Research College of Life SciencesFujian Normal UniversityFuzhouFujian 350117China Department of Cell and Molecular Biology Tulane UniversityNew OrleansLA 70118USA

The developing human and mouse teeth constitute an ideal model system to study the regulatory mechanism underlying organ growth control since their teeth share highly conserved and well-characterized developmental processes, and their developmental tempo varies notably. In the current study, we manipulated heterogenous recombination between human and mouse dental tissues and demonstrated that the dental mesenchyme dominates the tooth developmental tempo and FGF8 could be a critical player during this developmental process. Forced activation of FGF8 signaling in the dental mesenchyme of mice promoted cell proliferation, prevented cell apoptosis via p38 and perhaps PI3 K-Akt intracellular signaling,and impelled the transition of the cell cycle from G1-to S-phase in the tooth germ, resulting in the slowdown of the tooth developmental pace. Our results provide compelling evidence that extrinsic signals can profoundly affect tooth developmental tempo, and the dental mesenchymal FGF8 could be a pivotal factor in controlling the developmental pace in a non-cell-autonomous manner during mammalian odontogenesis.

关键词： FGF8 Tooth Developmental pace Non-cell-autonomous

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Halogen-assisted octet binding electrons construction of pnictogens towards wide-bandgap nonlinear optical pnictides

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Chinese Chemical Letters 2024年第12期35卷 585-588页

作者： Lihua Gao Yinglei Han chensheng lin Huikang Jiang Guang Peng Guangsai Yang Jindong Chen Ning Ye Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional CrystalsMaterials Science and EngineeringTianjin University of Technology MOE Key Laboratory of Weak-Light Nonlinear Photonics School of Physical SciencesNankai University Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences Tianjin Key Laboratory of Quantum Optics and Intelligent Photonics School of ScienceTianjin University of Technology

The design of pnictide nonlinear optical crystals is quite different from chalcogenide and oxide those in which a new paradigm need be developed to regulate the band gap,one of key optical parameters In this work,two non-centrosymmetric halidepnictides,[Cd2P]2[CdBr4]（CPB） and[Cd2As]2[CdBr4](CAB were *** complete octet binding electrons of pnictogens were constructed by four Cd-P pola covalent bonds under the anchoring effect of halogens,creating an extremely flat valence band maximum with band dispersion of only 0.17 *** expected,the balance of the covalency and ionicity in CPB and CAB was successfully realized,leading to a wide band gap of 2.58 eV and 1.88 ***,CPB no only has a widest band gap among Cd-containing pnictides,but also exhibits a SHG effect of 1.2×*** birefringence （0.088@visible light and calcd.0.043@2050 nm） and a wide IR transmission *** is the first time that the octet binding electrons construction strategy was utilized to design non diamond like NLO pnictides with excellent performances.

关键词： Nonlinear optical crystal Halidepnictide Wide band gap Structure design Electronic structure

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Ba(SO_(3)CH_(3))-(2):A Deep-Ultraviolet Transparent Crystal with Excellent Optical Nonlinearity Based on a New Polar Non-π-Conjugated NLO Building Unit SO_(3)CH_(3)^(−)

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CCS Chemistry 2023年第11期5卷 2497-2505页

作者： Haotian Tian chensheng lin Xin Zhao Feng Xu Chao Wang Ning Ye Min Luo Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 University of the Chinese Academy of Sciences Beijing 100049 Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional CrystalTianjin University of TechnologyTianjin 300384 Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China FuzhouFujian 350108

In this study,the first methyl sulfonate deepultraviolet(DUV)nonlinear optical(NLO)crystal,Ba(SO_(3)CH_(3))_(2),was successfully synthesized with the polar non-π-conjugated tetrahedron,SO_(3)CH_(3)^(−),as a novel DUV NLO building *** showed that Ba(SO_(3)CH_(3))_(2)not only had a very short absorption edge of 159 nm,which is the shortest among reported phase-matchable sulfates or sulfonates,but also exhibited excellent optical properties.(Powder X-ray diffractionwas ca.1.5×KH_(2)PO_(4)and birefringence was 0.04 at 589.3 nm.)It also exhibited high thermal stability and remarkable stability against air and ***,bulk Ba(SO_(3)CH_(3))_(2)crystal could be obtained conveniently from a simple solution evaporation ***,Ba(SO_(3)CH_(3))_(2)should have great potential as a DUV NLO crystal in the near future.

关键词： deep-ultraviolet nonlinear optical crystal non-π-conjugated methyl sulfonate crystal growth

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[C(NH)]PO·2HO: A new metal-free ultraviolet nonlinear optical phosphate with large birefringence and second-harmonic generation response

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Science China Materials 2021年第8期64卷 2008-2016页

作者： Xin Wen chensheng lin Min Luo Huixin Fan Kaichuang Chen Ning Ye College of Chemistry Fuzhou UniversityFuzhou 350116China Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

[PO_(4)]3-possesses small microscopic secondorder susceptibility and polarizability anisotropy,which inherently result in weak second-harmonic generation (SHG)and small ***,a new noncentrosymmetric phosphate,[C(NH_(2))3]3PO_(4)·2H_(2)O,was successfully designed and synthesized by a solution evaporation method.[C(NH_(2))3]3PO_(4)·2H_(2)O without metal ions is composed of planar conjugated guanidine cations and PO_(4)tetrahedrons,which are connected by hydrogen bonds,forming a three-dimensional *** property measurements indicate that the title compound displays an SHG response of 1.5×KH_(2)PO_(4)(KDP) and a larger birefringence (0.055@546.1 nm)compared with most reported ultraviolet nonlinear optical ***,first-principles calculations reveal that theπ-conjugated planar[C(NH_(2))3]+cations and[PO_(4)]3-groups are responsible for its excellent linear and NLOproperties.

关键词： nonlinear optical material second-harmonic generation birefringence structure-property relationship

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香草醛晶体光学非线性系数的有限场方法研究

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化学学报 2000年第11期58卷 1369-1373页

作者：林晨升吴克琛中国科学院福建物质结构研究所结构化学国家重点实验室福州350002

采用有限场方法计算了有机非线性材料3-甲氧基-4-羟基-苯甲醛(分子式C_8H_8O_3,简称MHBA)的二阶非线性光学系数d_(21),d_(22),d_(23),d_(25_).研究结果表明在MP2近似和6-31G+(p,d)基组水平上理论值能较好地与实验值符合,同时也表明拉电... 详细信息

采用有限场方法计算了有机非线性材料3-甲氧基-4-羟基-苯甲醛(分子式C_8H_8O_3,简称MHBA)的二阶非线性光学系数d_(21),d_(22),d_(23),d_(25_).研究结果表明在MP2近似和6-31G+(p,d)基组水平上理论值能较好地与实验值符合,同时也表明拉电子基团HC(?)O和推电子基因HO对于MHBA分子的光学非线性性能的影响很大,而晶体中分子间的氢键作用对d值的贡献很小.

关键词：香草醛二阶非线性光学系数有限元方法 MP2方法

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Identification of accessible chromatin landscape in the murine odontoblasts

Identification of accessible chromatin landscape in the muri...

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2018全国口腔生物医学学术年会

作者： Zhen Huang Jue Xu chensheng lin YiPing Chen Yanding Zhang Fujian Key Laboratory of Developmental and Neuro Biology College of Life Sciences Fujian Normal University Department of Cell and Molecular Biology Tulane University

The differentiation of odontoblasts requires unique sets of genes being turned on and off in a differentiation-specific manner. Recent delineation of chromatin modifications at activated gene loci provides new tools to investigate the mechanism of cell differentiation. The transposase-accessible chromatin using sequencing(ATAC-Seq) is a fast and sensitive method for assaying chromatin accessibility changes during differentiation. ATAC-Seq has even been performed on single cell, so the high-purity lineage is critical to the quality of the ATAC-Seq results. During odontoblast differentiation, the presumptive odontoblast that is underneath inner enamel epithelium divides into two cells, a daughter cell, induced by the epithelial cells and molecules they produce, differentiates into an odontoblast. Another daughter cell, not exposed to this epithelial signal, persists as a subodontoblast cell. Obviously, odontoblasts were hard to separate from subodontoblasts for analysis of chromatin modifications. In order to precisely isolate the odontoblasts, we cross transgenic mice carrying Cre allele, respectively, with fluorescent Cre reporter mice(ROSAmT mG) to label and distinguish odontoblasts from subodontoblasts. Our results show that only OCCre;ROSAmTmG mice specifically express Cre-recombinase in odontoblasts, enabling precisely labeling and tracing the fate of presumptive odontoblasts during differentiation. We further use FACS to sort mGFP-expressing odontoblasts from dental pulp of new-born OCCre;R26 RmT mG mice and then performed ATAC-Seq to detect genomic chromatin accessibility in odontoblasts. In total, 23,204 high-confidence open chromatin peaks were identified. GO enrichment analysis of the nearest neighbor genes in the vicinity of these odontoblast-specific peaks shows that peaks are enriched for odontoblast differentiation, dentin secretion, dentin mineralization et al. In this study, we establish a method for precisely sorting of murine odontoblasts and identi

关键词： accessible chromatin landscape odontoblasts differentiation ATAC-Seq

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Augmented Fgf8 signalling in neural crest cells exhibits prolonged tooth development and enlarged size in mice

Augmented Fgf8 signalling in neural crest cells exhibits pro...

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2017全国口腔生物医学学术年会

作者： chensheng lin Ningsheng Ruan Chenwei Huang Yuan Wang Xuefeng Hu Yiping Chen Yanding Zhang Fujian Key Laboratory of Developmental and Neuro Biology College of Life Sciences Fujian Normal University Department of Cell and Molecular Biology Tulane University

Objectives:Despite the mammalian dentition is characteristic in each species,the genetic pathways regulating their development are relatively *** morphological diversity is not attributable to formation of new genetic pathways,but modification and modulation of conservative genetic *** major differences between the human and mouse odontogenesis are development rate and size with much longer development process and larger size in ***

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磷属化物非线性光学晶体研究进展

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人工晶体学报 2020年第8期49卷 1405-1411页

作者：陈金东林晨升叶宁中国科学院福建物质结构研究所中国科学院大学中国福建光电信息科学与技术创新实验室

红外非线性光学晶体可以通过频率转换输出中远红外激光,在军事和民用领域都具有重要的应用。硫属化物和磷属化物皆是优秀的中远红外非线性光学材料的候选体系,近二十年来,硫属非线性光学材料得到了广泛研究和应用,然而对磷属非线性光学... 详细信息

红外非线性光学晶体可以通过频率转换输出中远红外激光,在军事和民用领域都具有重要的应用。硫属化物和磷属化物皆是优秀的中远红外非线性光学材料的候选体系,近二十年来,硫属非线性光学材料得到了广泛研究和应用,然而对磷属非线性光学材料的研究还相当匮乏。本文从新材料探索方面,综述了目前已经报道的磷属非线性光学材料的研究进展,按照晶体结构将其分为三大类,即经典的黄铜矿型结构、同原子键结构以及其他四面体堆积结构。主要讨论了这些化合物的晶体结构、非线性光学性能以及构效关系。最后探讨了磷属红外非线性光学晶体未来的发展方向。

关键词：红外非线性光学晶体磷属化物中远红外激光黄铜矿型同原子键四面体堆积

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基于生物信息学分析筛选人类胃癌预后生物标志物

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福建师范大学学报（自然科学版） 2020年第6期36卷 66-72页

作者：李琳君陈毅斌林陈胜福建师范大学生命科学学院福建省发育与神经生物学重点实验室福建福州350117

为筛选胃癌临床诊断和预后的新型生物标志物,利用GEO2R工具分析胃癌基因芯片数据集GSE79973,筛选差异表达基因;采用FunRich、STRING和Cytoscape对差异表达基因进行GO、KEGG分析和蛋白互作网络构建;通过GEPIA比较候选基因在胃癌和正常组... 详细信息

为筛选胃癌临床诊断和预后的新型生物标志物,利用GEO2R工具分析胃癌基因芯片数据集GSE79973,筛选差异表达基因;采用FunRich、STRING和Cytoscape对差异表达基因进行GO、KEGG分析和蛋白互作网络构建;通过GEPIA比较候选基因在胃癌和正常组织中的表达水平;应用Kaplan-Meier Plotter和cBioPortal分析候选基因与临床胃癌的相关性及预后情况.通过数据分析,发现COL5A1、COL8A1和COL4A1的高表达对人类胃癌患者总生存期的危害最大,且在胃癌患者中这3个基因的突变可提高患者的总生存期.因此,COL5A1、COL8A1和COL4A1可作为人类胃癌临床预后潜在的生物标志物.

关键词：胃癌生物标志物生物信息学 COL5A1 COL8A1 COL4A1

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