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Zhang L, Fang Y, Cheng X, Lian YJ, Xu HL, Zeng ZS, Zhu HC. Curcumin Exerts Effects on the Pathophysiology of Alzheimer's Disease by Regulating PI(3,5)P2 and Transient Receptor Potential Mucolipin-1 Expression. Front Neurol 2017; 8:531. [PMID: 29062301 PMCID: PMC5640884 DOI: 10.3389/fneur.2017.00531] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 09/22/2017] [Indexed: 12/14/2022] Open
Abstract
Background To validate our speculation that curcumin may ameliorate Alzheimer’s disease (AD) pathogenesis by regulating PI(3,5)P2 and transient receptor potential mucolipin-1 (TRPML1) expression levels. Methods We developed an animal model presenting AD by APP/PS1 transgenes. The mouse clonal hippocampal neuronal cell line HT-22 was treated with amyloid-β1-42 (Aβ1-42). Curcumin was administrated both in vivo and in vitro. MTS assay was used to detect cell viability, and the lysosomal [Ca2+] ion concentration was detected. The number of autophagosomes was detected by the transmission electron microscopic examination. Illumina RNA-seq was used to analyze the different expression patterns between Aβ1-42-treated cells without and with curcumin treatment. The protein level was analyzed by the Western blotting analysis. PI(3,5)P2 or TRPML1 was knocked down in HT-22 cells or in APP/PS1 transgenic mice. Morris water maze and recognition task were performed to trace the cognitive ability. Results Curcumin increased cell viability, decreased the number of autophagosomes, and increased lysosomal Ca2+ levels in Aβ1-42-treated HT-22 cells. Sequencing analysis identified TRPLML1 as the most significantly upregulated gene after curcumin treatment. Western blotting results also showed that TRPML1 was upregulated and mTOR/S6K signaling pathway was activated and markers of the autophagy–lysosomal system were downregulated after curcumin use in Aβ1-42-treated HT-22 cells. Knockdown of PI (3,5)P2 or TRPML1 increased the protein levels of markers of the autophagy–lysosomal system after curcumin use in Aβ1-42-treated HT-22 cells, inhibited mTOR/S6K signaling pathway, increased the protein levels of markers of the autophagy–lysosomal system after curcumin use in APP/PS1 mice. Besides, knockdown of PI(3,5)P2 or TRPML1 reversed the protective role of curcumin on memory and recognition impairments in mice with APP/PS1 transgenes. Conclusion To some extent, it suggested that the effects of curcumin on AD pathogenesis were, at least partially, associated with PI(3,5)P2 and TRPML1 expression levels.
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Affiliation(s)
- Lu Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yu Fang
- Department of Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xuan Cheng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ya-Jun Lian
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hong-Liang Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhao-Shu Zeng
- Department of Legal Medicine, The College of Basic Medical Sciences of Zhengzhou University, Zhengzhou, China
| | - Hong-Can Zhu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Cheng X, Xie NC, Xu HL, Chen C, Lian YJ. Biochemical aspirin resistance is associated with increased stroke severity and infarct volumes in ischemic stroke patients. Oncotarget 2017; 8:77086-77095. [PMID: 29100372 PMCID: PMC5652766 DOI: 10.18632/oncotarget.20356] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 06/30/2017] [Indexed: 11/30/2022] Open
Abstract
To explore the correlation of aspirin resistance (AR) with clinical stroke severity and infarct volume using diffusion-weighted imaging (DWI) in 224 Chinese ischemic stroke patients who were taking aspirin before stroke onset. In those patients, the median age was 64 years (IQR, 56-75 years), and males accounting for 54.9%(123)of the total subjects. Fifty of 224 enrolled patients (22.3%; 95% confidence interval (CI), 16.9% to 27.7%) showed AR. In the median regression model, significant increase was estimated in NIHSS score of 0.04 point for every 1-point increase in aspirin reaction units (ARU) (95% CI, 0.02 to 0.06; P<0.001). Diffusion-weighted MRI (DWI)-measured infarct volume were significantly higher in patients with AR as compared with those with AS [13.21 (interquartile ranges [IQR], 8.51-23.88) vs.4.26 (IQR, 1.74-11.62); P<0.001). Furthermore, a statistically significant increase was also measured in NIHSS score of 0.05 point for every 1-point increase in ARU in the median regression model (95% CI, 0.03 to 0.08; P<0.001). The median DWI infarct volume was significantly larger in the highest ARU quartile when compared to that in the low 3 quartiles (P<0.001). In conclusion, stroke patients with AR indicated higher risk of severe strokes and large infarcts compared to patients in the aspirin-sensitive group.
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Affiliation(s)
- Xuan Cheng
- Department of Neurology, The first affiliated hospital of Zhengzhou University, Zhengzhou, Henan province, P.R. China
| | - Nan-Chang Xie
- Department of Neurology, The first affiliated hospital of Zhengzhou University, Zhengzhou, Henan province, P.R. China
| | - Hong-Liang Xu
- Department of Neurology, The first affiliated hospital of Zhengzhou University, Zhengzhou, Henan province, P.R. China
| | - Chen Chen
- Department of Neurology, The first affiliated hospital of Zhengzhou University, Zhengzhou, Henan province, P.R. China
| | - Ya-Jun Lian
- Department of Neurology, The first affiliated hospital of Zhengzhou University, Zhengzhou, Henan province, P.R. China
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Li Q, Li CM, Xu HL, Su ZM. Aromaticity of graphene nanoflakes in a new way: fragment analysis by combination of the nucleus-independent chemical shifts and the anisotropy of current induced density. J Mol Model 2017; 23:231. [PMID: 28726151 DOI: 10.1007/s00894-017-3394-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 06/25/2017] [Indexed: 11/28/2022]
Abstract
A graphene nanoflake (GNF) is a polycyclic aromatic hydrocarbon (PAH) with a huge two-dimensional π-conjugated carbon material in which a central benzene ring is surrounded by identical benzene-type rings through infinite alternant method. In this paper, we explore the structure-aromaticity relationship of the GNFs and the GNFs with hollow sites (GNFHs) by combining the nucleus-independent chemical shifts (NICS) with the anisotropy of the current induced density (ACID). Firstly, the benzene is a typical aromatic molecule (NICS = -9.671 ppm), GNFs 1-6 is darned with benzene and the corresponding GNFHs 1'-6'. Secondly, the NICS values of GNFs 1-6 alternately vary: -1.214 (1) > -13.847 (2) < -2.662 (3) > -14.530 (4) < -3.932 (5) > -13.978 (6) ppm, the GNFs (2, 4, 6) with even fragments of annulene have larger aromaticity than that of GNFs (1, 3, 5) with odd fragments of annulene. Significantly, the NICS values of GNFs 1-6 can also be fragment analyzed by the NICS values and ACID of benzene and corresponding GNFHs 1'-6'. The NICS values for GNFs (2, 4, 6) can be roughly estimated by the NICS value of benzene minus the NICS value of the GNFHs (2', 4', 6'), respectively. The NICS values for GNFs (1, 3, 5) can be roughly estimated by the NICS value of the GNFHs (1', 3', 5') minus the NICS value of benzene, respectively. We hope that the present work can provide a simple and reliable method for the rational design of the GNF with aromaticity, which may be used to understand the origin of the graphene nanoflake aromatic properties.
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Affiliation(s)
- Qing Li
- Department of Chemistry, Faculty of Science, Yanbian University, Yanji, Jilin, 133002, China.,Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, China
| | - Chun-Min Li
- Hing School Attached to Northeast Normal University, Changchun, Jilin, 130017, China
| | - Hong-Liang Xu
- Department of Chemistry, Faculty of Science, Yanbian University, Yanji, Jilin, 133002, China.
| | - Zhong-Min Su
- Department of Chemistry, Faculty of Science, Yanbian University, Yanji, Jilin, 133002, China. .,Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, China.
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Xu HL, Liu MD, Yuan XH, Liu CX. Suppression of cortical TRPM7 protein attenuates oxidative damage after traumatic brain injury via Akt/endothelial nitric oxide synthase pathway. Neurochem Int 2017; 112:197-205. [PMID: 28736242 DOI: 10.1016/j.neuint.2017.07.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 06/06/2017] [Accepted: 07/19/2017] [Indexed: 01/05/2023]
Abstract
Neuronal death after traumatic brain injury (TBI) is a complex process resulting from a combination of factors, many of which are still unknown. Transient receptor potential melastatin 7 (TRPM7) is a transient receptor potential channel that has been demonstrated to mediate ischemic and traumatic neuronal injury in vitro. In the present study, TRPM7 was suppressed in the rat cerebral cortex by intracortical injections of viral vectors bearing shRNA specific for TRPM7 to investigate its potential role in an in vivo TBI model. We found that TRPM7 suppression significantly reduced brain edema, brain contusion volume and motor functional deficits, which was sustained for at least 2 weeks after the insult. These protective effects were accompanied by inhibited apoptosis in injured cortex. Also, TRPM7 suppression attenuated lipid peroxidation, decreased the expression of protein carbonyl, and preserved the endogenous antioxidant enzyme activities. The results of western blot analysis showed that TRPM7 suppression markedly increased the phosphorylation of Akt and endothelial nitric oxide synthase (eNOS). In addition, blocking Akt/eNOS pathway activation by the specific inhibitor LY294002 (LY, 10 μL, 10 mmol/L) or L-NIO (0.5 mg/kg) partially reversed the protective effects of TRPM7 suppression and its anti-oxidative activities. Taken together, these findings demonstrated that regional inhibition of TRPM7 in cerebral cortex exerts neuroprotective effects against TBI through activation of Akt/eNOS pathway. Thus, TRPM7 might represent a potential drug development target for the treatment of TBI.
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Affiliation(s)
- Hong-Liang Xu
- Department of Anesthesiology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, 310022, China
| | - Meng-Dong Liu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xiao-Hong Yuan
- Department of Anesthesiology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, 310022, China
| | - Chun-Xi Liu
- Department of Anesthesiology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, 310022, China.
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Liu SL, Wang Y, Zhang Y, Xu HL, Wang JC, He WW, Qin XT, Cao GQ, Yang YJ, Zhuge QC, Chen WJ. [Analysis of CT perfusion imaging in chronic cerebral circulatory insufficiency and its relationship with crossed cerebellar diaschisis]. Zhonghua Yi Xue Za Zhi 2017; 97:359-364. [PMID: 28219193 DOI: 10.3760/cma.j.issn.0376-2491.2017.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To investigate the change of cerebral microcirculation of chronic cerebral circulation insufficiency(CCCI) patients and the relationship between CCCI and crossed cerebellar diaschisis(CCD)by using 320-detector row of low-dose volume CT perfusion imaging. Methods: A total of 158 patients (103 males, 55 females, from 45 to 82 years old, the mean age was 62.9) with symptoms of CCCI were admitted to the First Affiliated Hospital of Wenzhou Medical University from June 2013 to January 2016. Low-dose CTP imaging of whole brain was performed to them using 320-detector row volume CT scanner. The perfusion parameters such as cerebral blood flow(CBF), cerebral blood volume(CBV), mean transit time(MTT), time to peak(TTP) and DLY in both cerebral blood supply areas and cerebellum were got, so were the 4-dimensional CTA images, and rCBF, rCBV, rMTT and rTTP were calculated by ipsilateral/contralateral value. Comparative t-test and independent t-test were applied to analyzing these parameters quantitatively.Chi-square test and Logistic regression model were applied to analyzing the related clinical risk factors. Results: (1) All 108 patients in CCCI group showed asymmetric perfusion within two cerebral hemispheres in CTP images. The CBF, CBV of diseased side were lower than the contralateral mirror area (t(CBF)=-12.89, t(CBV)=-7.031, P(CBF, CBV)<0.001); the MTT of the diseased side was shorter than the contralateral mirror area (t(MTT) =13.310, P(MTT)<0.001); the TTP of the diseased side was longer than the contralateral mirror area (t(TTP)=-4.012, P(TTP)<0.001). The rCBF and rCBV of CCCI group were lower than that in non-CCCI group (t(rCBF)=3.079, t(rCBV)=2.760, P(rCBF, rCBV)<0.01), while the rTTP of CCCI group was longer than that in non-CCCI group (t(rTTP)=4.846, P(rTTP)<0.001). (2)The results of Chi-square test showed that the differences of gender (χ(2)=4.036, P=0.045), hyperlipidemia (χ(2)=7.687, P=0.006), as well as smoking (χ(2)=11.868, P=0.001) had statistical significance between CCCI group and non-CCCI group.Multi-factor Logistic regression analysis showed that hyperlipidemia (OR value=3.736, P=0.016) and smoking (OR value=4.641, P=0.01) were the risk factors of CCCI, while gender had no relationship with it.(3)The incidence of CCD was 18.5% in the CCCI group, and at the same time, the supratentorial corresponding blood supply areas were classified.A total of 10(34.5%) cases were in blood supply area of posterior cerebral artery, 6(20.7%) cases were in blood supply area of middle cerebral artery, 12(41.4%) cases were of anterior cerebral artery, while only 1(3.5%) case was of basal ganglia, in which 4 cases were in blood supply area of posterior cerebral artery, another 4 cases were middle cerebral artery, 7 cases were of anterior cerebral artery and no case of basal ganglia respectively leading CCD alone. Conclusions: CTP could display the microcirculation situation of abnormal brain tissue perfusion area intuitively and quantitatively. Additionally, it could reflect the degree of relationship between cerebral several blood supply areas and cerebellum.
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Affiliation(s)
- S L Liu
- Department of Radiology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
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Zhou YY, Yao YF, Ni QY, Zhang MW, Xu HL. Ten novel MHC-DPB1 alleles identified in Tibetan macaque (Macaca thibetana). HLA 2017; 89:123-124. [PMID: 28102033 DOI: 10.1111/tan.12945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 11/28/2016] [Accepted: 11/29/2016] [Indexed: 11/28/2022]
Abstract
Ten novel MHC-DPB1 alleles of Tibetan macaque, were identified by cloning and sequencing.
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Affiliation(s)
- Y Y Zhou
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Y F Yao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Q Y Ni
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - M W Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - H L Xu
- College of Life Science, Sichuan Agricultural University, Ya'an, China
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Xu HL, Zhang QC, Hu SQ, You YW, Chen J. [The clinical features of patients with allergic rhinitis of Nantong city in China]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:30-33. [PMID: 29774681 DOI: 10.13201/j.issn.1001-1781.2017.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Indexed: 11/12/2022]
Abstract
Objective:To comprehensively analyze the clinical features of patients with AR by a retrospective study. Method:A total number of 8 102 patients diagnosed with AR were enrolled in Nantong area, and detailed clinical data were documented in all cases. Skin prick tests with standardized aeroallergens were conducted in these patients; The samples were divided into two groups(children and adults group) and the clinical features between two groups were analysed. Result:Children in schoolage were the majority of AR patients in children group. There were 4 581 cases(56.54%) with ocular symptoms, 3 977 cases(49.09%)with lower respiratory tract symptoms. Nasal congestion (97.37%) was the most common symptoms in patients with AR,while eye itching(32.68%) was the most common ocular symptoms in patients with AR, followed by the dacryorrhea(23.57%);and cough(44.72%) was the most common lower respiratory tract symptoms. Dermatophagoides pteronyssinus and dermatophagoides farinae had the highest positivity among all allergens, and the shrimp was the main food allergen. Conclusion:We analyzed the clinical features of patients with AR, that would provide a more scientific basis for prevention,clinical diagnosis, treatment and epidemiological studies for AR.
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Affiliation(s)
- H L Xu
- Department of Otorhinolaryngology Head and Neck Surgery, the Third People's Hospital of Nantong
| | - Q C Zhang
- Department of Otorhinolaryngology Head and Neck Surgery,Affiliated Hospital of Nantong University
| | - S Q Hu
- Department of Otorhinolaryngology Head and Neck Surgery,Affiliated Hospital of Nantong University
| | - Y W You
- Department of Otorhinolaryngology Head and Neck Surgery,Affiliated Hospital of Nantong University
| | - J Chen
- Department of Otorhinolaryngology Head and Neck Surgery,Affiliated Hospital of Nantong University
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Yang ZQ, Chen H, Tan JH, Xu HL, Jia J, Feng YH. Cloning of three genes involved in the flavonoid metabolic pathway and their expression during insect resistance in Pinus massoniana Lamb. Genet Mol Res 2016; 15:gmr-15-04-gmr.15049332. [PMID: 28081282 DOI: 10.4238/gmr15049332] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Pinus massoniana Lamb. is an important timber and turpentine-producing tree species in China. Dendrolimus punctatus and Dasychira axutha are leaf-eating pests that have harmful effects on P. massoniana production. Few studies have focused on the molecular mechanisms underlying pest resistance in P. massoniana. Based on sequencing analysis of the transcriptomes of insect-resistant P. massoniana, three key genes involved in the flavonoid metabolic pathway were identified in the present study (PmF3H, PmF3'5'H, and PmC4H). Structural domain analysis showed that the PmF3H gene contains typical binding sites for the 2OG-Fe (II) oxygenase superfamily, while PmF3'5'H and PmC4H both contain the cytochrome P450 structural domain, which is specific for P450 enzymes. Phylogenetic analysis showed that each of the three P. massoniana genes, and the homologous genes in gymnosperms, clustered into a group. Expression of these three genes was highest in the stems, and was higher in the insect-resistant P. massoniana varieties than in the controls. The extent of the increased expression in the insect-resistant P. massoniana varieties indicated that these three genes are involved in defense mechanisms against pests in this species. In the insect-resistant varieties, rapid induction of PmF3H increased the levels of PmF3'5'H and PmC4H expression. The enhanced anti-pest capability of the insect-resistant varieties could be related to temperature and humidity. In addition, these results suggest that these three genes maycontribute to the change in flower color during female cone development.
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Affiliation(s)
| | | | - J H Tan
- Guangxi Forestry Research Institute, Engineering Research Center of Masson Pine of State Forestry Administration, Engineering Research Center of Masson Pine of Guangxi, Nanning, China
| | - H L Xu
- Guangxi Forestry Research Institute, Engineering Research Center of Masson Pine of State Forestry Administration, Engineering Research Center of Masson Pine of Guangxi, Nanning, China
| | - J Jia
- Guangxi Forestry Research Institute, Engineering Research Center of Masson Pine of State Forestry Administration, Engineering Research Center of Masson Pine of Guangxi, Nanning, China
| | - Y H Feng
- Guangxi Forestry Research Institute, Engineering Research Center of Masson Pine of State Forestry Administration, Engineering Research Center of Masson Pine of Guangxi, Nanning, China
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Zhong RL, Xu HL, Li ZR. The polar 2e/12c bond in phenalenyl-azaphenalenyl hetero-dimers: Stronger stacking interaction and fascinating interlayer charge transfer. J Chem Phys 2016; 145:054304. [PMID: 27497558 DOI: 10.1063/1.4960340] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Rong-Lin Zhong
- Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, People’s Republic of China
| | - Zhi-Ru Li
- Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
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Gao FW, Xu HL, Su ZM. The inner-induced effects of YCN in C76 on the structures and nonlinear optical properties. J Mol Model 2016; 22:174. [PMID: 27383610 DOI: 10.1007/s00894-016-3040-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 06/20/2016] [Indexed: 11/27/2022]
Abstract
Very recently, an unprecedented novel monometallic cluster of fullerenes entrapping a yttrium cyanide (YCN) cluster inside a popular C82 cage YCN@Cs(6)-C82 was synthesized and characterized. Inspired by this investigation, four non-IPR YCN@C1(17459)-C76, YCN@C2v(19138)-C76, YCN@C2(17646)-C76, and YCN@C1(17894)-C76 (1, 2, 3, and 4) containing a pair of adjacent pentagons are designed to explore the encapsulated molecular effect on their interaction energies and nonlinear optical properties. The interaction energy (E int) values of 1, 2, 3, and 4 are -481.35 (1), -477.91 (2), -482.04 (3), -482.69 (4) kcal mol(-1), respectively, which shows that the E int value of 4 is the largest. Furthermore, the electron-transfer is mainly from the YCN to C76 cage. When YCN is encapsulated into C76 cage, we can find that the α0 values of the four molecules are very close, ranging from 6.50 × 10(2) to 6.65 × 10(2) au. Significantly, the first hyperpolarizabilities are in relation to the encapsulated molecular: 1.63 × 10(3) (1) > 8.03 × 10(2) (2) > 7.76 × 10(2) (4) > 4.86 × 10(2) au (3), the results show that the βtot value of 1 is the largest. Besides this, the encapsulation of the YCN to C76 cage brings some distinctive changes in its UV-vis spectra along with its other electronic properties that might be used by the experimentalists to develop the potential nonlinear optical nanomaterials based on endohedral metallofullerenes.
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Affiliation(s)
- Feng-Wei Gao
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China.
| | - Zhong-Min Su
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China.
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Zhong RL, Xu HL, Su ZM. Connecting effect on the first hyperpolarizability of armchair carbon-boron-nitride heteronanotubes: pattern versus proportion. Phys Chem Chem Phys 2016; 18:13954-9. [PMID: 27152376 DOI: 10.1039/c6cp00647g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon-boron-nitride heteronanotubes (BNCNT) have attracted a lot of attention because of their adjustable properties and potential applications in many fields. In this work, a series of CA, PA and HA armchair BNCNT models were designed to explore their nonlinear optical (NLO) properties and provide physical insight into the structure-property relationships; CA, PA and HA represent the models that are obtained by doping the carbon segment into pristine boron nitride nanotube (BNNT) fragments circularly around the tube axis, parallel to the tube axis and helically to the tube axis, respectively. Results show that the first hyperpolarizability (β0) of an armchair BNCNT model is dramatically dependent on the connecting patterns of carbon with the boron nitride fragment. Significantly, the β0 value of PA-6 is 2.00 × 10(4) au, which is almost two orders of magnitude larger than those (6.07 × 10(2) and 1.55 × 10(2) au) of HA-6 and CA-6. In addition, the β0 values of PA and CA models increase with the increase in carbon proportion, whereas those of HA models show a different tendency. Further investigations on transition properties show that the curved charge transfer from N-connecting carbon atoms to B-connecting carbon atoms of PA models is essentially the origin of the big difference among these models. This new knowledge about armchair BNCNTs may provide important information for the design and preparation of advanced NLO nano-materials.
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Affiliation(s)
- Rong-Lin Zhong
- Institute of Theoretical Chemistry, Jilin University, Changchun, 130023 Jilin, People's Republic of China and Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 Jilin, People's Republic of China.
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 Jilin, People's Republic of China.
| | - Zhong-Min Su
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 Jilin, People's Republic of China.
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Abstract
We presented a new fixation method of CO2 through excess-electron-induced C–C bond. For the reaction of CO2 and C6H6, they can produce one H2 and phthalic acid radical via two H-atom elimination, with the help of the hydrogen bond complex.
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Affiliation(s)
- Fang Ma
- School of Chemistry and Materials Science
- Huaibei Normal University
- Huaibei 235000
- China
| | - Tao Miao
- School of Chemistry and Materials Science
- Huaibei Normal University
- Huaibei 235000
- China
| | - Zhong-Jun Zhou
- State Key Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun
- China
| | - Hong-Liang Xu
- Department of Chemistry
- The University of Hong Kong
- Hong Kong
- China
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Abstract
A whole new pancake-shaped 2e/24c π–π bonding is presented in diradical π-dimers 2 due to combination of twelve p–π interactions. Among these new radical π-dimers 2, the 2180 shows the smallest layer distance and the largest interaction between two layers of radicals.
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Affiliation(s)
- Feng-Wei Gao
- The Institute of Functional Material Chemistry
- National & Local United Engineering Laboratory for Power Batteries
- Northeast Normal University
- Changchun
- China
| | - Rong-Lin Zhong
- The Institute of Functional Material Chemistry
- National & Local United Engineering Laboratory for Power Batteries
- Northeast Normal University
- Changchun
- China
| | - Shi-Ling Sun
- The Institute of Functional Material Chemistry
- National & Local United Engineering Laboratory for Power Batteries
- Northeast Normal University
- Changchun
- China
| | - Hong-Liang Xu
- The Institute of Functional Material Chemistry
- National & Local United Engineering Laboratory for Power Batteries
- Northeast Normal University
- Changchun
- China
| | - Zhong-Min Su
- The Institute of Functional Material Chemistry
- National & Local United Engineering Laboratory for Power Batteries
- Northeast Normal University
- Changchun
- China
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Gao FW, Zhong RL, Sun SL, Xu HL, Zhao L, Su ZM. Charge transfer and first hyperpolarizability: cage-like radicals C59X and lithium encapsulated Li@C59X (X=B, N). J Mol Model 2015; 21:258. [PMID: 26369918 DOI: 10.1007/s00894-015-2808-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 08/30/2015] [Indexed: 10/23/2022]
Abstract
Very recently, two new cage-like radicals (C59B and C59N) formed by a boron or nitrogen atom substituting one carbon atom of C60 were synthesized and characterized. In order to explore the structure-property relationships of combination the cage-like radical and alkali metal, the endohedral Li@C59B and Li@C59N are designed by lithium (Li) atom encapsulated into the cage-like radicals C59B and C59N. Further, the structures, natural bond orbital (NBO) charges, and nonlinear optical (NLO) responses of C59B, C59N, Li@C59B, and Li@C59N were investigated by quantum chemical method. Three density functional methods (BHandHLYP, CAM-B3LYP, and M05-2X) were employed to estimate their first hyperpolarizabilities (β tot) and obtained the same trend in the β tot value. The β tot values by BHandHLYP functional of the pure cage-like radicals C59B (1.30 × 10(3) au) and C59N (1.70 × 10(3) au) are close to each other. Interestingly, when one Li atom encapsulated into the electron-rich radical C59N, the β tot value of the Li@C59N increases to 2.46 × 10(3) au. However, when one Li atom encapsulated into the electron-deficient radical C59B, the β tot value of the Li@C59B sharply decreases to 1.54 × 10(2) au. The natural bond orbital analysis indicates that the encapsulated Li atom leads to an obvious charge transfer and valence electrons distribution plays a significant role in the β tot value. Further, frontier molecular orbital explains that the interesting charge transfer between the encapsulated Li atom and cage-like radicals (C59B and C59N) leads to differences in the β tot value. It is our expectation that this work will provide useful information for the design of high-performance NLO materials.
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Affiliation(s)
- Feng-Wei Gao
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Rong-Lin Zhong
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Shi-Ling Sun
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China.
| | - Liang Zhao
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry, Department of Chemistry, Northeast Normal University, Changchun, 130024, China.
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66
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Li DY, Wu N, Tu JB, Hu YD, Yang MY, Yin HD, Chen BL, Xu HL, Yao YF, Zhu Q. Expression patterns of melatonin receptors in chicken ovarian follicles affected by monochromatic light. Genet Mol Res 2015; 14:10072-80. [PMID: 26345944 DOI: 10.4238/2015.august.21.14] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Artificial illumination is an important exogenous factor in the control of many physiological and behavioral processes as well as an important environmental factor in the management of laying hens. Melatonin receptors are members of the G protein-coupled receptor family. The hormone melatonin is secreted primarily by the pineal gland, with highest levels occurring during the dark period of a circadian cycle. The aim of this study was to examine the effect of monochromatic light on chicken egg reproduction and expression of melatonin receptors in chicken ovarian follicles. A total of 552 19-week-old hens were randomly divided into 4 groups with 138 birds in each group. Each group was randomly divided into 3 replicates with 46 birds in each replicate. Feed and water were provided for ad libitum. Light treatments were: control cool white (400-760 nm), blue (480 nm), green (560 nm), and red (660 nm). The short wavelength (blue light) group produced a greater total number of eggs at 300 days of age than did the long wavelength (red light) group, and the red light group showed higher melatonin receptor type 1A and melatonin receptor type 1C mRNA and protein expression. These results suggest that the wavelength of light is closely related to chicken egg number at 300 days of age; there is no effect of monochromatic light on melatonin receptor type 1B.
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Affiliation(s)
- D Y Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - N Wu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - J B Tu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - Y D Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - M Y Yang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - H D Yin
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - B L Chen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - H L Xu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - Y F Yao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
| | - Q Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, China
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67
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Chen S, Xu HL, Sun SL, Zhao L, Su ZM. Superalkali atoms bonding to the phenalenyl radical: structures, intermolecular interaction and nonlinear optical properties. J Mol Model 2015. [DOI: 10.1007/s00894-015-2750-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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68
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Huang W, Wang TB, Zhang P, Dang Y, Chen JH, Xue F, Zhang PX, Yang M, Xu HL, Fu ZG, Jiang BG. [Characteristics and perioperative management of hemophilia patients with fractures]. Beijing Da Xue Xue Bao Yi Xue Ban 2015; 47:281-284. [PMID: 25882945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the characteristics and perioperative management of hemophilia patients with fracture. METHODS Retrospectively, we analyzed 8 patients with hemophilia combined with fracture, who were admittted to our department from 2005 to 2013. Six patients were with hemophilia A and two with hemophilia B; Based on the severity of hemophilia, 2 cases were light, 3 moderate and 3 severe; Based on the location of fracture, 4 cases were femoral neck fractures, 1 femoral intertrochanteric fracture, 1 bilateral distal femur fractures, 1 tibiofibula fracture, and 1 humerus intercondylar fracture. Blood coagulation factor replacement therapy was conducted preoperatively, intraoperatively and postoperatively, All the patients underwent closed or open reduction and internal fixation or joint replacement. Also, we analyzed the perioperative complications and observed whether the fracture healed. RESULTS The average age was 33.5 years (14 to 47 years); In 6 cases, fractures occurred at femur, accounting for 75% of all the fractures; Femoral neck fracture was treated by closed reduction and hollow screws fixation; Femoral intertrochanteric fracture, distal femur fracture, and tibiofibula fracture were treated by open reduction and internal fixation with plate; Humerus intercondylar fracture was treated by elbow joint replacement. Intraoperative bleeding was from 50 to 600 mL, an average of 262 mL; Perioperatively, the average use of FVIII/activated prothrombin complex concentrates (APCC) was 358 U/kg (125 to 554 U/kg). Postoperatively, poor wound healing was observed in 2 patients, and the condition improved after symptomatic treatment; In patients with internal fixation, all the fractures united, and the average healing time was 14 weeks. No complications such as fixation loosening or rupture occurred after internal fixation. CONCLUSION Hemophilia combined with fracture mainly occurred in the young, and the site of fracture was given priority to femur. With perfect preoperative preparation, on the basis of the replacement therapy, hemophilia combined with fractures was safe for surgical treatment, and postoperative fractures healing wasgood. But the risk of poor wound healing was high.
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Affiliation(s)
- W Huang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - T B Wang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - P Zhang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - Y Dang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - J H Chen
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - F Xue
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - P X Zhang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - M Yang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - H L Xu
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - Z G Fu
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - B G Jiang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
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69
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Dai QX, Yao YF, Qi ZC, Huang Y, Ni QY, Zhang MW, Xu HL. Sequence characterization and phylogenetic analysis of Toll-like receptor (TLR) 4 gene in the Tibetan macaque (Macaca thibetana). Genet Mol Res 2015; 14:1875-86. [PMID: 25867333 DOI: 10.4238/2015.march.13.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, the complete coding region sequence of an innate immune-related TLR4 gene was obtained from the Tibetan macaque (Macaca thibetana) genome via PCR and direct sequencing. The sequence had a total length of 2481 bp, contained 3 complete exons, and encoded 826 amino acids (AAs); its isoelectric point was 5.703, and the molecular weight was 94.72 kDa. The high structure prediction showed that the protein was comprised of one extracellular region, one transmembrane region, and one intracellular region. There were 48 potential functional sites in the protein, including glycosylation, phosphorylation, and acetylation sites. A homology analysis among 9 primate species, including the Tibetan macaque, human, chimpanzee, gibbon, rhesus macaque, cynomolgus monkey, pig-tailed monkey, squirrel monkey, and small-eared galago, showed that the homology of the nucleotide and AA sequences ranged from 60.9-99.5% and 51.4- 99.0%, respectively. Higher variability was identified in the extracellular region of the TLR4 protein, and its variable sites accounted for 88.79% (AA) of the total variable sites. Additionally, the number of AAs at the 3' end of the intracellular region was notably different among the primate lineages. The phylogenetic tree based on TLR4 gene exons of 9 primate species showed that the Tibetan macaque clustered with the rhesus macaque, cynomolgus monkey, and pig-tailed monkey; it was most distant from the small-eared galago. This study will provide an important basis for further study on the expression, regulation, and polymorphism of the TLR4 gene and the relationship between polymorphisms and host disease susceptibility.
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Affiliation(s)
- Q X Dai
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - Y F Yao
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - Z C Qi
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, China
| | - Y Huang
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - Q Y Ni
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - M W Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - H L Xu
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
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70
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Abstract
The excess electron is a kind of special anion with dispersivity, loosely bounding and with other fascinating features, which plays a pivotal role (promote to about 10(6) times in (H2O)3{e}) in the large first hyperpolarizabilities (β0) of dipole-bound electron clusters. This discovery opens a new perspective on the design of novel nonlinear optical (NLO) molecular materials for electro-optic device application. Significantly, doping alkali metal atoms in suitable complexants was proposed as an effective approach to obtain electride and alkalide molecules with excess electron and large NLO responses. The first hyperpolarizability is related to the characteristics of complexants and the excess electron binding states. Subsequently, a series of new strategies for enhancing NLO response and electronic stability of electride and alkalide molecules are exhibited by using various complexants. These strategies include not only the behaviors of pushed and pulled electron, size, shape, and number of coordination sites of complexants but also the number and spin state of excess electrons in these unusual NLO molecules.
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Affiliation(s)
| | | | - Zhi-Ru Li
- ‡State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
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71
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Zhang Y, Li HQ, Yao YF, Liu W, Ni QY, Zhang MW, Xu HL. Uneven evolutionary rate of the melatonin-related receptor gene (GPR50) in primates. Genet Mol Res 2015; 14:680-90. [PMID: 25730005 DOI: 10.4238/2015.january.30.11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The melatonin-related receptor GPR50 plays an important role in mammalian adaptive thermogenesis in response to calorie intake. The evolutionary history of the GPR50 gene is poorly understood in primates; however, it has been reported that GPR50 is the mammalian ortholog of Mel1c, which has been well characterized. In this study, the complete coding sequences of the GPR50 gene in the Sichuan snub-nosed monkeys (Rhinopithecus roxellana) and Tibetan macaques (Macaca thibetana) were sequenced, and the orthologous nucleotide acid sequences of the GPR50 gene in 11 other primate species were downloaded from GenBank. Thirteen species representing 6 major primate lineages (human, great ape, lesser ape, Old World monkey, New World monkey, and prosimian monkey) were subjected to statistical analyses. A selective test showed that the entire GPR50 gene sequence is under strong purifying selection in these primates but has a significantly different evolutionary rate among the 6 major primate lineages. Notably, both the Homo and Pan branches exhibited an ω ratio >1, indicating accelerated evolution of the two lineages. Further analysis of different domains revealed that the acceleration trend was more significant in the C-terminal domain (CTD). Interestingly, in the alignment of 13 primate GPR50 nucleotide acid sequences, numerous insertions or deletions were only found in the CTD region, implying that this region may play a key role in the process of primate GPR50 evolution. The results provide deeper insight into the functional evolution of GPR50 in mammals at the molecular level.
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Affiliation(s)
- Y Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - H Q Li
- College of Life Science and Technology, Yangtze Normal University, Chongqing, China
| | - Y F Yao
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - W Liu
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - Q Y Ni
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - M W Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
| | - H L Xu
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, China
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72
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Gao Y, Wu HQ, Sun SL, Xu HL, Su ZM. One lithium atom binding with P-nitroaniline: lithium salts or lithium electrides? J Mol Model 2015; 21:23. [PMID: 25620420 DOI: 10.1007/s00894-014-2560-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 12/07/2014] [Indexed: 11/25/2022]
Abstract
Recently, both lithium (Li) salts and Li electrides formed by one Li atom interacting with ligand complexes, have been widely investigated. An interesting question emerges: is the configuration of one Li atom interacting with ligand complexes a Li salt or electride? In the present work, four configurations n-Li-PNA (n = 1-4) were obtained by binding one Li atom with the p-nitroaniline (PNA) at different positions to explore this question. The results show that 1-Li-PNA and 2-Li-PNA are typical Li salts, and 4-Li-PNA is a typical Li electride. Significantly, 3-Li-PNA possesses both characteristics of Li salt and electride. At the same time, 3-Li-PNA has the largest first hyperpolarizability (2.9 × 10(6) au) by ROMP2 method compared with the other three configurations. Furthermore, the first hyperpolarizability of 3-Li-PNA is about 2600 times larger than that of PNA. Further, the vertical ionization potential (VIP) and interaction energy (E int) indicate that 3-Li-PNA is less stable than 1-Li-PNA and 2-Li-PNA (Li salts), but is more stable than 4-Li-PNA (Li electrides).
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Affiliation(s)
- Ying Gao
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, Jilin, People's Republic of China
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73
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Affiliation(s)
- Xue Zhang
- Institute of Functional Material Chemistry,
Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Heng-Qing Wu
- Institute of Functional Material Chemistry,
Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry,
Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Shi-Ling Sun
- Institute of Functional Material Chemistry,
Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry,
Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
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74
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Gao Y, Zhong RL, Xu HL, Sun SL, Su ZM. The effect of ring sizes and alkali metal cations on interaction energy, charge transfer and nonlinear optical properties of crown ether derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra01145k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of the crown ethers are designed to explore the effect of ring sizes and the nature of alkali metal cations doping on the interaction energy, charge transfer and nonlinear optical property.
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Affiliation(s)
- Ying Gao
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- People's Republic of China
| | - Rong-Lin Zhong
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- People's Republic of China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- People's Republic of China
| | - Shi-Ling Sun
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- People's Republic of China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- People's Republic of China
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75
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Abstract
It is well known that ammonia borane (BH3NH3) is one of the simplest donor–acceptor complexes.
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Affiliation(s)
- Xue Zhang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Shi-Ling Sun
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
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76
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Muhammad S, Irfan A, Shkir M, Chaudhry AR, Kalam A, AlFaify S, Al-Sehemi AG, Al-Salami AE, Yahia IS, Xu HL, Su ZM. How does hybrid bridging core modification enhance the nonlinear optical properties in donor-π-acceptor configuration? A case study of dinitrophenol derivatives. J Comput Chem 2014; 36:118-28. [DOI: 10.1002/jcc.23777] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 10/09/2014] [Accepted: 10/15/2014] [Indexed: 01/11/2023]
Affiliation(s)
- Shabbir Muhammad
- Department of Physics; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Center of Excellence for Advanced Materials Research; King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - Ahmad Irfan
- Center of Excellence for Advanced Materials Research; King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Department of Chemistry; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - Mohd Shkir
- Department of Physics; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Center of Excellence for Advanced Materials Research; King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - Aijaz R. Chaudhry
- Department of Physics; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Center of Excellence for Advanced Materials Research; King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Department of Physics; College of Science, Universiti Teknologi Malaysia; UTM Skudai 81310 Johor Malaysia
| | - Abul Kalam
- Center of Excellence for Advanced Materials Research; King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Department of Chemistry; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - Salem AlFaify
- Department of Physics; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Center of Excellence for Advanced Materials Research; King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - Abdullah G. Al-Sehemi
- Center of Excellence for Advanced Materials Research; King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
- Department of Chemistry; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - A. E. Al-Salami
- Department of Physics; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - I. S. Yahia
- Department of Physics; College of Science, King Khalid University; Abha 61413, P.O. Box 9004 Saudi Arabia
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry; Faculty of Chemistry, Northeast Normal University; Changchun 130024 Jilin People's Republic of China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry; Faculty of Chemistry, Northeast Normal University; Changchun 130024 Jilin People's Republic of China
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77
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Li Y, Xu HL, Zhong RL, Sun SL, Su ZM. The Effect of the different spin multiplicity on nonlinear optical properties of lithium decahydroborate dimers. J Mol Model 2014; 20:2415. [PMID: 25213111 DOI: 10.1007/s00894-014-2415-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 08/04/2014] [Indexed: 10/24/2022]
Abstract
In 2009, an innovative type of lithium decahydroborate (Li@B(10)H(14)) complex with a basketlike complexant of decaborane (B(10)H(14)) was designed and studied. Theoretical investigation is very important for designing high-performance nonlinear optical (NLO) materials. In the present work, an unusual Li@B(10)H(14) dimer with different spin multiplicities was designed theoretically to explore the influence of the spin multiplicity on NLO properties: 1 (triplet), 2 (open-shell singlet) and 3 (singlet). Interestingly, the results show that the intersection angle (between cage A and cage A') follows the order of 1 (13.71°) > 2 (1.65°) > 3 (0°). As a result, the first hyperpolarizability (β(tot)) value follows the order of 1 (19,129 a.u.) < 2 (35,992 a.u.) < 3 (77,660 a.u.). Additionally, 1, 2 and 3 of λ(max) shows an apparent red shift with three spin multiplicities in the absorption spectrum. The results of this work can be expected to provide useful information for designing high-performance NLO materials based on decaborane.
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Affiliation(s)
- Yong Li
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, Jilin, People's Republic of China
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Li SB, Duan YA, Geng Y, Li HB, Zhang JZ, Xu HL, Zhang M, Su ZM. A designed bithiopheneimide-based conjugated polymer for organic photovoltaic with ultrafast charge transfer at donor/PC71BM interface: theoretical study and characterization. Phys Chem Chem Phys 2014; 16:25799-808. [DOI: 10.1039/c4cp03022b] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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79
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Ma F, Bai DS, Xu HL. Hydrogen-bond-directed-linking solving transparence-efficiency tradeoff in nonlinear optical molecule. J Mol Graph Model 2014; 53:161-167. [PMID: 25145287 DOI: 10.1016/j.jmgm.2014.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 07/20/2014] [Accepted: 07/28/2014] [Indexed: 11/16/2022]
Abstract
It is well known that settling transparency-efficiency tradeoff is important to design nonlinear optical (NLO) materials. In this work, we constructed one-dimensional polymeric cyanoacetylene (NCCCH)n by hydrogen-bond-directed-linking to understand this tradeoff from molecular level. Results show that the first hyperpolarizability of (NCCCH)n (n=2-8) gradually increased with the increase of n, and what is more important is that the red-shifts, associated with the increase of n, were very little. It is proposed that these polymeric structures possess double-degenerated charge transitions, which contribute to the hyperpolarizability in an additive fashion, and that the coupled oscillators are gradually improved, which lead to the increase of the first hyperpolarizability. Therefore, we propose the hydrogen-bond-directed-linking idea is helpful to develop the potential high-performance NLO materials.
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Affiliation(s)
- Fang Ma
- School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.
| | - Dong-Sheng Bai
- School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China.
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80
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Wang LJ, Zhong RL, Sun SL, Xu HL, Pan XM, Su ZM. The V-shaped polar molecules encapsulated into Cs (10528)-C72: stability and nonlinear optical response. Dalton Trans 2014; 43:9655-60. [PMID: 24839638 DOI: 10.1039/c3dt53329h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently, a new sulfide cluster fullerene, Sc2S@Cs (10528)-C72 containing two pairs of fused pentagons has been isolated and characterized (Chen et al., J. Am. Chem. Soc., 2012, 134, 7851). Inspired by this investigation, we propose a question: what properties will be influenced by the interaction between the encapsulated V-shaped polar molecule and C72? To answer this question, four encapsulated metallic fullerenes (EMFs) M2N@C72 (M = Sc or Y, N = S or O) along with pristine Cs-C72 (10528) were investigated by quantum chemistry methods. The results show that the Egap (3.01-3.14 eV) of M2N@C72 are significantly greater than that of pristine Cs-C72 (10528) (2.34 eV). This indicates that the stabilities of these EMFs increase by encapsulating the V-shaped polar molecule into the fullerene. Furthermore, the natural bond orbital (NBO) charge analysis indicates electron transfer from M2N to C72 cage, which plays a crucial role in enhancing first hyperpolarizability (βtot). The βtot follows the order of 1174 au (Y2O@C72) ≈ 1179 au (Sc2O@C72) > 886 au (Y2S@C72) ≈ 864 au (Sc2S@C72) > 355 au (C72). This indicates that the βtot of M2N@C72 is more remarkable than that of pristine Cs-C72 (10528) due to the induction effect of the encapsulated molecule. Compared with sulfide cluster fullerenes (Y2S@C72 and Sc2S@C72), oxide cluster fullerenes (Sc2O@C72 and Y2O@C72) show much larger βtot due to the small ionic radius and the large electronegativity of oxygen. In contrast, the metal element (scandium and yttrium) has a slight influence on the βtot. Thus, oxide cluster fullerenes are candidates to become promising nonlinear optical materials with higher performance.
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Affiliation(s)
- Li-Jie Wang
- Institute of Functional Materials Chemistry, Faculty of Chemistry Northeast Normal University, Changchun 130024, Jilin, P. R. China.
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81
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Hu YY, Sun SL, Tian WT, Tian WQ, Xu HL, Su ZM. Inside Cover: Influence of Spiral Framework on Nonlinear Optical Materials (ChemPhysChem 5/2014). Chemphyschem 2014. [DOI: 10.1002/cphc.201490021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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82
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Abstract
A series of spiral donor-π-acceptor frameworks (i.e. 2-2, 3-3, 4-4, and 5-5) based on 4-nitrophenyldiphenylamine with π-conjugated linear acenes (naphthalenes, anthracenes, tetracenes, and pentacenes) serving as the electron donor and nitro (NO2 ) groups serving as the electron acceptor were designed to investigate the relationships between the nonlinear optical (NLO) responses and the spirality in the frameworks. A parameter denoted as D was defined to describe the extent of the spiral framework. The D value reached its maximum if the number of NO2 groups was equal to the number of fused benzene rings contained in the linear acene. A longer 4-nitrophenyldiphenylamine chain led to a larger D value and, further, to a larger first hyperpolarizability. Different from traditional NLO materials with charge transfer occurring in the one-dimensional direction, charge transfer in 2-2, 3-3, 4-4, and 5-5 occur in three-dimensional directions due to the attractive spiral frameworks, and this is of great importance in the design of NLO materials. The origin of such an enhancement in the NLO properties of these spiral frameworks was explained with the aid of molecular orbital analysis.
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Affiliation(s)
- Yang-Yang Hu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin (P.R. China); Institute of Theoretical and Simulational Chemistry, Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080 (P.R. China)
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83
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84
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Gao Y, Xu HL, Zhong RL, Sun SL, Su ZM. Structures and electro-optical properties of Möbius [n]Cyclacenes[13–18]: a theoretical study. J Mol Model 2014; 20:2201. [DOI: 10.1007/s00894-014-2201-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 03/04/2014] [Indexed: 10/25/2022]
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85
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Gao Y, Sun SL, Xu HL, Zhao L, Su ZM. N-Methylbenzoaza-18-crown-6-ether derivatives as efficient alkali metal cations sensors: the dipole moment and first hyperpolarizability. RSC Adv 2014. [DOI: 10.1039/c4ra02238f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
1-Li+, 1-Na+ and 1-K+ complexes formed by N-methylbenzoaza-18-crown-6-ether derivatives with one alkali metal cation were investigated. Their dipole moments and first hyperpolarizabilities take on opposite trends with increasing the atomic number.
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Affiliation(s)
- Ying Gao
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, People's Republic of China
| | - Shi-Ling Sun
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, People's Republic of China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, People's Republic of China
| | - Liang Zhao
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, People's Republic of China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, People's Republic of China
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86
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Chen S, Sun SL, Wu HQ, Xu HL, Zhao L, Su ZM. Superatoms (Li3O and BeF3) induce phenalenyl radical π-dimer: fascinating interlayer charge-transfer and large NLO responses. Dalton Trans 2014; 43:12657-62. [DOI: 10.1039/c4dt01240b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The two phenalenyl units in 2a and 2b carry positive and negative charges, respectively. Remarkably, 2a and 2b with novel 2e/12c bonds exhibit a dramatic interlayer charge-transfer character, which results in a significant Δμ and considerably large first hyperpolarizabilities.
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Affiliation(s)
- Sa Chen
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, P.R. China
| | - Shi-Ling Sun
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, P.R. China
| | - Heng-Qing Wu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, P.R. China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, P.R. China
| | - Liang Zhao
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, P.R. China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024, P.R. China
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87
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Li Y, Xu HL, Wu HQ, Zhong RL, Sun SL, Su ZM. Isomeric thiophene-fused benzocarborane molecules—different lithium doping effect on the nonlinear optical property. Dalton Trans 2014; 43:2656-60. [DOI: 10.1039/c3dt52923a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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88
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Zhong RL, Xu HL, Sun SL, Qiu YQ, Zhao L, Su ZM. Theoretical investigation on the 2e/12c bond and second hyperpolarizability of azaphenalenyl radical dimers: Strength and effect of dimerization. J Chem Phys 2013; 139:124314. [DOI: 10.1063/1.4822005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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89
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Wan QJ, He YC, Luan SD, Zhu D, Peng Q, Li J, Li T, Xu Y, Xu HL, Liao Y, Dong X. Chylous ascites because of intravenous infusion of long-chain fatty acids. ARCH ESP UROL 2013; 33:332-3. [PMID: 23660611 DOI: 10.3747/pdi.2012.00040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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90
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Wu HQ, Zhong RL, Kan YH, Sun SL, Zhang M, Xu HL, Su ZM. After the electronic field: Structure, bonding, and the first hyperpolarizability of HArF. J Comput Chem 2013; 34:952-7. [DOI: 10.1002/jcc.23220] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 12/05/2012] [Accepted: 12/07/2012] [Indexed: 11/06/2022]
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91
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Wang LJ, Sun SL, Zhong RL, Liu Y, Wang DL, Wu HQ, Xu HL, Pan XM, Su ZM. The encapsulated lithium effect of Li@C60Cl8 remarkably enhances the static first hyperpolarizability. RSC Adv 2013. [DOI: 10.1039/c3ra40909k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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92
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Wang JN, Jin JL, Geng Y, Sun SL, Xu HL, Lu YH, Su ZM. An accurate and efficient method to predict the electronic excitation energies of BODIPY fluorescent dyes. J Comput Chem 2012; 34:566-75. [DOI: 10.1002/jcc.23168] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 09/07/2012] [Accepted: 09/30/2012] [Indexed: 01/17/2023]
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93
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Zhong RL, Xu HL, Sun SL, Qiu YQ, Su ZM. Inside Cover: The Excess Electron in a Boron Nitride Nanotube: Pyramidal NBO Charge Distribution and Remarkable First Hyperpolarizability (Chem. Eur. J. 36/2012). Chemistry 2012. [DOI: 10.1002/chem.201290154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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94
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Zhong RL, Xu HL, Sun SL, Qiu YQ, Su ZM. The Excess Electron in a Boron Nitride Nanotube: Pyramidal NBO Charge Distribution and Remarkable First Hyperpolarizability. Chemistry 2012; 18:11350-5. [DOI: 10.1002/chem.201201570] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Indexed: 11/09/2022]
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95
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Zhong RL, Xu HL, Su ZM, Li ZR, Sun SL, Qiu YQ. Inside Cover: Spiral Intramolecular Charge Transfer and Large First Hyperpolarizability in Möbius Cyclacenes: New Insight into the Localized π Electrons (ChemPhysChem 9/2012). Chemphyschem 2012. [DOI: 10.1002/cphc.201290042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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96
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Xu HL, Zhang CC, Sun SL, Su ZM. Assembly of Sandwich-Like Supermolecules Li Salts CpLi-C60: Structures, Stabilities, and Nonlinear Optical Properties. Organometallics 2012. [DOI: 10.1021/om2012858] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hong-Liang Xu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin,
People’s Republic of China
| | - Cui-Cui Zhang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin,
People’s Republic of China
| | - Shi-Ling Sun
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin,
People’s Republic of China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin,
People’s Republic of China
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97
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Zhong RL, Xu HL, Su ZM, Li ZR, Sun SL, Qiu YQ. Spiral Intramolecular Charge Transfer and Large First Hyperpolarizability in Möbius Cyclacenes: New Insight into the Localized π Electrons. Chemphyschem 2012; 13:2349-53. [DOI: 10.1002/cphc.201200213] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Indexed: 11/06/2022]
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98
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Wang DL, Xu HL, Su ZM, Muhammad S, Hou DY. Probing the chemical functionalization of single-walled carbon nanotubes with multiple carbon ad-dimer defects. Chemphyschem 2012; 13:1232-9. [PMID: 22302701 DOI: 10.1002/cphc.201100774] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Indexed: 11/06/2022]
Abstract
Drying-tube-shaped single-walled carbon nanotubes (SWCNTs) with multiple carbon ad-dimer (CD) defects are obtained from armchair (n,n,m) SWCNTs (n=4, 5, 6, 7, 8; m=7, 13). According to the isolated-pentagon rule (IPR) the drying-tube-shaped SWCNTs are unstable non-IPR species, and their hydrogenated, fluorinated, and chlorinated derivatives are investigated. Interestingly, chemisorptions of hydrogen, fluorine, and chlorine atoms on the drying tube-shaped SWCNTs are exothermic processes. Compared to the reaction energies for binding of H, F, and Cl atoms to perfect and Stone-Wales-defective armchair (5,5) nanotubes, binding of F with the multiply CD defective SWCNTs is stronger than with perfect and Stone-Wales-defective nanotubes. The reaction energy for per F(2) addition is between 85 and 88 kcal mol(-1) more negative than that per H(2) addition. Electronic structure analysis of their energy gaps shows that the CD defects have a tendency to decrease the energy gap from 1.98-2.52 to 0.80-1.17 eV. After hydrogenation, fluorination, and chlorination, the energy gaps of the drying-tube-shaped SWCNTs with multiple CD defects are substantially increased to 1.65-3.85 eV. Furthermore, analyses of thermodynamic stability and nucleus-independent chemical shifts (NICS) are performed to analyze the stability of these molecules.
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Affiliation(s)
- Dong-Lai Wang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, P. R. China
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99
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Sun SL, Hu YY, Xu HL, Su ZM, Hao LZ. Probing the linear and nonlinear optical properties of nitrogen-substituted carbon nanotube. J Mol Model 2012; 18:3219-25. [PMID: 22246287 DOI: 10.1007/s00894-011-1334-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Accepted: 12/13/2011] [Indexed: 11/25/2022]
Affiliation(s)
- Shi-Ling Sun
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 Jilin, People's Republic of China
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100
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Zhong RL, Xu HL, Muhammad S, Zhang J, Su ZM. The stability and nonlinear optical properties: Encapsulation of an excess electron compound LiCN⋯Li within boron nitride nanotubes. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14358a] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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