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Jiang P, Wang Z, Moxey GJ, Morshedi M, Barlow A, Wang G, Quintana C, Zhang C, Cifuentes MP, Humphrey MG. Syntheses and quadratic nonlinear optical properties of 2,7-fluorenylene- and 1,4-phenylene-functionalized o-carboranes. Dalton Trans 2019; 48:12549-12559. [PMID: 31367717 DOI: 10.1039/c9dt02645b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
o-Carboranes C-functionalized by (4-substituted-phen-1-yl)ethynyl-1,4-phenyl groups or (2-substituted-fluoren-7-yl)ethynyl-2,7-fluorenyl groups, in which the pendant functionalization is electron-withdrawing nitro or electron-donating diphenylamino groups, have been synthesized and in many cases structurally characterized. Diphenylamino-containing examples coupled via the two π-delocalizable bridges to the electron-accepting o-carborane unit exhibit the greater quadratic optical nonlinearities at 1064 nm (hyper-Rayleigh scattering, ns pulses), the nonlinearities also increasing on proceeding from 1,4-phenylene- to 2,7-fluorenylene-containing bridge. The most NLO-efficient example 2-(n-butyl)-1-(2-((9,9-di(n-butyl)-2-(N,N-diphenylamino)-9H-fluoren-7-yl)ethynyl)-9,9-di(n-butyl)-9H-fluoren-7-yl)-1,2-ortho-carborane, consisting of diphenylamino donor, fluorenyl-containing bridge, o-carborane acceptor, and solubilizing n-butyl units, exhibits large 〈β〉HRS (230 × 10-30 esu) and frequency-independent (two-level model) 〈β0〉 (96 × 10-30 esu) values. Coupling two (2-((9,9-di(n-butyl)-2-(N,N-diphenylamino)-9H-fluoren-7-yl)ethynyl)-9,9-di(n-butyl)-9H-fluoren-7-yl) units to the 1,2-ortho-carborane core affords a di-C-functionalized compound with enhanced nonlinearities (309 × 10-30 esu and 129 × 10-30 esu, respectively).
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Affiliation(s)
- Peng Jiang
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China.
| | - Zhaojin Wang
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China.
| | - Graeme J Moxey
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Mahbod Morshedi
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Adam Barlow
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Genmiao Wang
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Cristóbal Quintana
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Chi Zhang
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China.
| | - Marie P Cifuentes
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China. and Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Mark G Humphrey
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China. and Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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Merhi A, Grelaud G, Morshedi M, Abid S, Green KA, Barlow A, Groizard T, Kahlal S, Halet JF, Ngo HM, Ledoux I, Cifuentes MP, Humphrey MG, Paul F, Paul-Roth CO. Synthesis, characterization and third-order nonlinear optical properties of a dodecaruthenium organometallic dendrimer with a zinc(ii) tetraphenylporphyrin core. Dalton Trans 2018; 47:11123-11135. [PMID: 30043792 DOI: 10.1039/c8dt02301h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new Zn(ii) porphyrin-based dendrimer (52) containing twelve Ru(ii) alkynyl fragments, has been prepared following a convergent approach in two steps from 5,10,15,20-tetra(4-ethynylphenyl)porphyrinatozinc(ii) (6). The cubic nonlinear optical (NLO) properties of 52 and other derivatives of 6 have been measured by third-harmonic generation (THG) at 1907 nm and by Z-scan over the spectral range 500-1700 nm, revealing the remarkable NLO response of 52 in the near-IR range. These results highlight the beneficial role of the extended "cross fourchée"-like polymetallic structure of 52 on its third-order NLO properties.
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Affiliation(s)
- Areej Merhi
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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