Third-order nonlinear optical properties of symmetric phenoxazinium chlorides with resonance structures at 532 nm

Ge, Jian‐Feng; Lu, Yue-Ting; Sun, Rong; Zhang, Jian; Xu, Qingfeng; Li, Najun; Ye, Song; Lu, Jianmei

doi:10.1016/j.dyepig.2011.04.004

Cited by 22 publications

(11 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nonlinear absorption component was estimated under an open aperture. Because the transmittance of light ( T ) is a function of the sample’s Z position (with respect to the focal point at Z = 0), the nonlinear absorption [α = β( I i )] and the linear absorption (α 0 ) are described by eq , where α 0 and α are the linear and effective third-order NLO absorptive coefficients, τ is the time, and L is the optical path …”

Section: Resultsmentioning

confidence: 99%

Diverse Tp*-Capped W–Cu–S Clusters from One-Pot Assembly Involving in Situ Thiolation of Phosphines

et al. 2016

Self Cite

View full text Add to dashboard Cite

In the absence/presence of S8, the one-pot assembly of [Et4N][Tp*WS3] [1; Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate] with [Cu(MeCN)4]PF6 and bis- or tetraphosphine ligands 1,2-bis(diphenylphosphino)ethane (dppe), 1,3-bis(diphenylphosphino)propane (dppp), 1,4-bis(diphenylphosphino)butane (dppb), and N,N,N',N'-tetrakis(diphenylphosphinomethyl)ethylenediamine (dppeda) produces six W-Cu-S clusters, namely, [(Tp*WS3Cu2Cl)2(dppe)] (2), [Tp*WS3Cu4(dppp)2(μ4-Cl)(μ-Cl)]PF6·MeCN (3·MeCN), [(Tp*WS3Cu3)2(μ4-Cl)(μ-Cl)2(dpppS2)] (4), [(Tp*WS3Cu2Cl)2(dppbS2)]·2MeCN·2H2O (5·2MeCN·2H2O), [(Tp*WS3Cu3Cl2)2(dppbS2)] (6), and [(Tp*WS3Cu3)2(Ph2PS2)3(μ6-Cl)0.5](PF6)0.5·0.75CH2Cl2 (7·0.75CH2Cl2). Compounds 2-7 are characterized by elemental analysis, IR, UV-vis, (1)H and (31)P{(1)H} NMR, electrospray ionization mass spectrometry, and X-ray crystallography. For 2, the dppe ligand bridges a pair of butterfly-shaped [Tp*WS3Cu2] cores to form a double-butterfly-shaped structure. For 4, the dppp ligand is susceptible toward S association and forms an in situ generated dpppS2 ligand, supporting an octanuclear double-half-open-cubane structure and contrasting an analogous system wherein a pentanuclear motorcycle-shaped cationic cluster 3 is formed with the absence of S8. A longer dppb ligand readily converts to S-based ligands in 5 and 6, subsequently serving as bridges between a pair of a butterfly-shaped (5) and nest-shaped (6) clusters. Further use of a tetraphosphine ligand, dppeda, in the cluster formation, with the presence of S8, leads to an unexpected ligand degradation to give the [Ph2PS2](-) anions. Three [Ph2PS2](-) anions juxtapose a pair of nest-shaped cluster cores to yield an octanuclear cluster, 7, featuring a cage to encapsulate μ6-Cl(-). The third-order nonlinear-optical (NLO) properties of 2-7 in N,N-dimethylformamide, investigated using a Z-scan technique at 532 nm, show that 2-6 have a reverse saturable absorption, while 7 has a notable saturable absorption. All of 2-7 exhibit a self-focusing effect with hyperpolarizability γ values in the range of 4.71 × 10(-30)-1.02 × 10(-29) esu, which are 440-1000 times higher than that of 1. The formation of 4-7 from 1 through the in situ thiolation of phosphine ligands presents a new approach to the design and assembly of the W-Cu-S clusters with interesting structural arrays and better NLO properties.

show abstract

Section: Resultsmentioning

confidence: 99%

Diverse Tp*-Capped W–Cu–S Clusters from One-Pot Assembly Involving in Situ Thiolation of Phosphines

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Since the transmittance of light T (Z) is a function of the sample's Z position (concerning the focal point at Z =0), the nonlinear and linear absorption is decsribed by eq (1), where Z is the distance between the sample and the focus, I i (Z) is the intensity of light, α ( α = β ( I i )) and α 0 are effective and linear absorption coefficients, L is the optical path, and τ is time [8]

true T (Z) = \frac{α_{0}}{\sqrt{π} {β I}_{i} (Z) (1 - e^{- α_{0} L})} \int_{- \infty}^{\infty} \ln [1 + {β I}_{i} (Z) \frac{1 - e^{- α_{0} L}}{α_{0}} e^{- τ^{2}}] normald τ

…”

Section: Resultsmentioning

confidence: 99%

Heterobimetallic Cluster‐Based Coordination Polymers: Assembly, Structures and Third‐Order Nonlinear Optical Properties

Chen

Bao

Tang

et al. 2021

Chemistry An Asian Journal

View full text Add to dashboard Cite

Reactions of (NH4)2WS4 with CuCN, CuCN/1,2‐bis(4‐pyridyl)propane (bppa) or [Cu(MeCN)4]PF6/bppa under different reaction conditions afforded a set of two‐ or three‐dimensional W/Cu/S cluster‐based coordination polymers including {[Et4N]2[WS4Cu4(μ‐CN)2(μ‐I)2]}n (1), [WS4Cu4(μ‐CN)2(bppa)2]n (2) and {[WS4Cu4(bppa)4](PF6)2}n (3), respectively. Compound 2 can be readily formed from reaction of 1 with bppa under solvothermal conditions. Compounds 1 and 2 feature two‐dimensional networks with a “sql” topology, while 3 possesses a two‐fold interpenetrated three‐dimensional net with a rare “reo” topology. Compounds 1–3 in DMF exhibited different third‐order nonlinear optical responses, and they all showed a reverse saturable absorption while 2 held a strong self‐focusing effect.

show abstract

“…The values of α 2 (nonlinear absorptive index), n 2 (third-order NLO refractive index), χ (3) (third-order susceptibility), and γ (hyperpolarizability) were calculated from eqs –, which were listed in Table . …”

Section: Resultsmentioning

confidence: 99%

“…All complexes displayed a reverse saturable absorption and self-focusing effect (Figure 7 for 5 and Figures S9−S11 for 6−8). 71 The values of α 2 (nonlinear absorptive index), n 2 (third-order NLO refractive index), χ (3) (third-order susceptibility), and γ (hyperpolarizability) were calculated from eqs 1−7, 82 which were listed in Table 2.…”

Section: ■ Introductionmentioning

confidence: 99%

Tungsten(VI)–Copper(I)–Sulfur Cluster-Supported Metal–Organic Frameworks Bridged by in Situ Click-Formed Tetrazolate Ligands

et al. 2017

Self Cite

View full text Add to dashboard Cite

Six analogous two-dimensional (2D) [Tp*WSCu]-based (Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate) networks, namely, {[(Tp*WSCu)L](μ-N)} (2: L = 5-methyltetrazolate (Mtta); 3a: L = 5-ethyltetrazolate (Etta)) and {[(Tp*WSCu)L]BF} (3b: L = Etta; 4: L = 5-propyltetrazolate (Ptta); 5: L = 5-butyltetrazolate (Btta); 6: L = 5-pentyltetrazolate (Petta)) were synthesized by reactions of [EtN][Tp*WS] (1), [Cu(CHCN)]BF, NaN, and NHBF in different nitrile solvents (CH(CH)CN, n = 0, 1, 2, 3, and 4) under solvothermal conditions. In the structures of 2-6, each alkyl tetrazolate L as a bridging ligand was generated in situ from the "click" reaction between azide and nitrile. These 2D (6,3) networks support two types of voids wherein the pendant alkyl groups are accommodated. A tetrahedron cage-like cluster [Tp*W(μ-S)(μ-S')Cu] (7) was also formed in some of the above reactions and can be readily separated by solvent extraction. The proportion of 7 increased with the elongation of the alkyl chains and finally became the exclusive product when heptylnitrile was employed. Further use of CuCN as a surrogate for [Cu(CHCN)]BF with the aim of introducing additional CN bridges into the network led us to isolate a tetrazolate-free compound, {[EtN]{(Tp*WSCu)[Cu(CN)]}·2PhCHCN} (8·2PhCHCN), a unique 2D network that features {(Tp*WSCu)[Cu(CN)]}, {(Tp*WSCu)[Cu(CN)][Cu(CN)]}, and {(Tp*WSCu)[Cu(CN)]} ring subunits. Compounds 5-8 are soluble in DMF and exhibit a reverse saturable absorption and self-focusing third-order nonlinear optical (NLO) effect at 532 nm with hyperpolarizability γ values in the range of 4.43 × 10 to 5.40 × 10 esu, which are 400-500 times larger than that of their precursor 1. The results provide an interesting insight into the synergetic synthetic strategy related to the assembly of the [Tp*WSCu] cluster core, the "click" formation of the tetrazolate ligands, and the construction of the [Tp*WSCu] cluster-based 2D networks.

show abstract

Third-order nonlinear optical properties of symmetric phenoxazinium chlorides with resonance structures at 532 nm

Cited by 22 publications

References 28 publications

Diverse Tp*-Capped W–Cu–S Clusters from One-Pot Assembly Involving in Situ Thiolation of Phosphines

Diverse Tp*-Capped W–Cu–S Clusters from One-Pot Assembly Involving in Situ Thiolation of Phosphines

Heterobimetallic Cluster‐Based Coordination Polymers: Assembly, Structures and Third‐Order Nonlinear Optical Properties

Tungsten(VI)–Copper(I)–Sulfur Cluster-Supported Metal–Organic Frameworks Bridged by in Situ Click-Formed Tetrazolate Ligands

Contact Info

Product

Resources

About