A series of new star-shaped or branched platinum–acetylide derivatives: synthesis, characterization, and their aggregation behavior

Jiang, Bo; Chen, Li Jun; Xu, Lin; Liu, Shunying; Yang, Hai‐Bo

doi:10.1039/c3cc42689k

Cited by 34 publications

(6 citation statements)

References 29 publications

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“…The absorption spectra of Pt-1 show the weak absorption peaks at the higher energy region, ca. 280–320 nm, which are likely due to 1 π–π* and n−π* transitions localized on alkoxyphenyl components . The strongest absorption bands at about 430 nm predominantly arise from the 1 MLCT (dπ(Pt) → π*(triazine) and dπ(Pt) → π*(fluorene acetylide)) and 1 LLCT (phenyl acetylide ligand to fluorene acetylide) transitions and 1 ILCT (fluorene acetylide charge transfer to fluorene acetylide) transitions.…”

Section: Resultsmentioning

confidence: 99%

“…280−320 nm, which are likely due to 1 π−π* and n−π* transitions localized on alkoxyphenyl components. 19 The strongest absorption bands at about 430 nm predominantly arise from the 1 MLCT (dπ(Pt) → π*(triazine) and dπ(Pt) → π*(fluorene acetylide)) and 1 LLCT (phenyl acetylide ligand to fluorene acetylide) transitions and 1 ILCT (fluorene acetylide charge transfer to fluorene acetylide) transitions. Noticeably, it was found that in the absorption spectrum of Pt-1 appeared a very weak tail beyond 550 nm.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The synthetic routes for compound Pt-1 are shown in Scheme . Compounds 9,9-dibutyl-7-ethynyl-9 H -fluorene-2-carbaldehyde ( 2 ) and 3,4,5-tris(dodecyloxy)- N - (4-ethynylphenyl)benzamide Pt(II) chlorine complex ( Pt-Cl ) were prepared as per the literature procedure.…”

Section: Methodsmentioning

confidence: 99%

“…Among those complexes used to fabricate organometallic gels, square-planar Pt(II) acetylide complexes have attracted wide attention, − in which the extents of the d 8 –d 8 Pt–Pt interaction and the π–π interaction of the ligand play an important role in tuning their spectroscopic and optical properties. , In addition, on the basis of the efficient intersystem crossing (ISC), high emission quantum yield, long-lived excited state, and strong excited state absorption (ESA), Pt(II) acetylide complexes have exhibited extensive application in low-power upconversion, photoinduced charge separation, light-emitting materials, chemosensors, nonlinear optics, − etc. Therefore, the introduction of Pt(II) acetylide complexes in organometallic gels could be expected to contribute to the generation of novel metallogel materials for optical functional applications.…”

Section: Introductionmentioning

confidence: 99%

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1,3,5-Triazine-Based Pt(II) Metallogel Material: Synthesis, Photophysical Properties, and Optical Power-Limiting Performance

Zhu

et al. 2019

J. Phys. Chem. C

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A new Pt(II) acetylide metallogel material (Pt-1) with 1,3,5-triazine core and 3,4,5-tris(dodecyloxy)benzamide terminal units was synthesized and characterized. Its photophysical properties were studied by UV–vis absorption, emission, transient absorption, Z-scan, and nonlinear transmission spectroscopy/technique. Pt-1 exhibits ligand-centered n−π* and 1π–π* transitions in the UV region, and broad, strong absorption bands mixed with intraligand charge transfer (1ILCT)/ligand-to-ligand charge transfer (1LLCT)/metal-to-ligand charge transfer (1MLCT) in the visible spectral region (forward slashes expression indicates that all three processes can be involved, in any proportion). Meanwhile, it shows much stronger triplet transient absorption from the visible to near-infrared region. Thus, the optical power-limiting (OPL) performance of Pt-1 was demonstrated in solution and gel state for a 532 nm nanosecond laser pulse, both of which exhibit a significant decrease of output energy density when the incident light energy increases. In addition, the gel properties of Pt-1 in 15 solvents were studied and a gel sheet with good optical transparency was obtained after cooling the heating sols in dimethylformamide solution. This study can open a new outlet for OPL gelation materials and devices on the basis of the reverse saturable absorption mechanism.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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1,3,5-Triazine-Based Pt(II) Metallogel Material: Synthesis, Photophysical Properties, and Optical Power-Limiting Performance

Zhu

et al. 2019

J. Phys. Chem. C

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“…In a continuing study, a series of branched or star-shaped platinum-acetylide derivatives, 47 and 48 (Chart 15), were successfully prepared and their aggregation behavior both in solution and on the surface was investigated. 68 Interestingly, concentration-dependent emission properties were observed for these complexes in some solutions, indicating the existence of certain aggregates in the selected solvents. For instance, the emission spectrum of 47a displayed a red shift of 34 nm with a decreased intensity upon increasing the concentration, which might be attributed to their tendency to self-associate through p-p interactions between neighbouring molecules in the concentrated solution.…”

Section: Supramolecular Self-assembly Of Platinum-acetylide Building ...mentioning

confidence: 96%

Linear neutral platinum–acetylide moiety: beyond the links

Wang

Yang

2014

Chem. Commun.

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In this feature article, brief highlights of research progress on the linear neutral platinum-acetylide moiety, trans-Pt(PR3)2(C≡CR')2, are presented. Due to its unique characteristics such as the well-defined linear geometry, synthetic accessibility, and intriguing photoproperties, this type of platinum-acetylide moiety has been extensively investigated in many respects from supramolecular chemistry to materials science during the past two decades. However, compared with the extensively studied charged platinum-acetylide complexes, the linear neutral platinum-acetylide moiety has been less reviewed. Based upon our recent progress in platinum chemistry, we provide herein a brief review on the linear neutral platinum-acetylide building block. This feature article will focus on its role as a linkage building block, but beyond the links. Three aspects including complex architectures composed of platinum-acetylide links, platinum-acetylide bridged multichromophoric arrays, and supramolecular self-assembly of platinum-acetylide building blocks are discussed.

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Cooperative Supramolecular Polymerization of Fluorescent Platinum Acetylides for Optical Waveguide Applications

et al. 2017

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One-dimensional organic structures with well-oriented p-aggregation, strong emission, and ease of processability are desirable for optoelectronic waveguiding devices. Herein, as trategy is developed to attain this objective by selfassembling platinum(II) acetylides into fluorescent supramolecular polymers via cooperative mechanism. The resulting high-molecular-weight supramolecular polymers are capable of forming electrospun microfibers with uniform geometry and smooth surface,which enable light propagation with extremely low scattering loss (0.008 dB mm À1 ). With the elaborate combination of bottom-up supramolecular polymerization and topdown electrospinning techniques,this work offers anovel and versatile avenue towardhigh-performance optical waveguiding materials.

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A series of new star-shaped or branched platinum–acetylide derivatives: synthesis, characterization, and their aggregation behavior

Abstract: A series of branched or star-shaped platinum-acetylide derivatives were successfully prepared and their aggregation behaviour both in solution and on the surface was explored.

Cited by 34 publications

References 29 publications

1,3,5-Triazine-Based Pt(II) Metallogel Material: Synthesis, Photophysical Properties, and Optical Power-Limiting Performance

1,3,5-Triazine-Based Pt(II) Metallogel Material: Synthesis, Photophysical Properties, and Optical Power-Limiting Performance

Linear neutral platinum–acetylide moiety: beyond the links

Cooperative Supramolecular Polymerization of Fluorescent Platinum Acetylides for Optical Waveguide Applications

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