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Evolving a Circular Plastics Economy

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Professor Richard Barnes

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Professor Rudi Wurzel R.K.Wurzel@hull.ac.uk
Professor of Comparative European Politics and Jean Monnet Chair in European Union Studies.

Dr Felix Why

Dr Victoria-Sophie Osburg

Dr Sharif Zein

Professor Daniel Parsons

Dr Michael Farrelly

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Dr Vicky Skoulou V.Skoulou@hull.ac.uk
Graduate Research Director (GRD) of School of Engineering ; Assoc. Professor (Senior Lecturer) in Chemical Engineering ; PI of the B3: Biomass Waste- BioenergH2- Biochars Challenge Group of PGRs and PDRAs

Pentamethylcyclopentadienyl molybdenum(V) complexes derived from iodoanilines: Synthesis, structure, and rop of ε-caprolactone (2021)
Journal Article
Xing, T., Elsegood, M. R. J., Dale, S. H., & Redshaw, C. (2021). Pentamethylcyclopentadienyl molybdenum(V) complexes derived from iodoanilines: Synthesis, structure, and rop of ε-caprolactone. Catalysts, 11(12), Article 1554. https://doi.org/10.3390/catal11121554

The reaction of [Mo(η-C5Me5 )Cl4 ] with the ortho-, meta-, or para-iodo-functionalized anilines 2-IC6H4NH2, 3-IC6H4NH2, 4-IC6H4NH2 yields imido or amine products of the type [Mo(ηC5Me5 )Cl2 (IC6H4N)] (2-I, 1, 3-I, 3, 4-I, 5) or [Mo(η-C5Me5 )Cl4 (IC6H... Read More about Pentamethylcyclopentadienyl molybdenum(V) complexes derived from iodoanilines: Synthesis, structure, and rop of ε-caprolactone.

Lithiated Calix[ n]arenes (n = 6 or 8): Synthesis, Structures, and Use in the Ring-Opening Polymerization of Cyclic Esters (2021)
Journal Article
Xing, T., Jiang, C., Elsegood, M. R. J., & Redshaw, C. (2021). Lithiated Calix[ n]arenes (n = 6 or 8): Synthesis, Structures, and Use in the Ring-Opening Polymerization of Cyclic Esters. Inorganic chemistry, https://doi.org/10.1021/acs.inorgchem.1c02192

A variety of lithiated calix[n]arenes, for which n = 6 or 8, have been isolated, structurally characterized, and evaluated as catalysts for the ring-opening polymerization (ROP) of the cyclic esters ϵ-caprolactone (ϵ-CL), δ-valerolactone (δ-VL), and... Read More about Lithiated Calix[ n]arenes (n = 6 or 8): Synthesis, Structures, and Use in the Ring-Opening Polymerization of Cyclic Esters.

Lead calix[n]arenes (n = 4, 6, 8): Structures and ring opening homo-/co-polymerization capability for cyclic esters (2021)
Journal Article
Xing, T., Prior, T. J., & Redshaw, C. (2021). Lead calix[n]arenes (n = 4, 6, 8): Structures and ring opening homo-/co-polymerization capability for cyclic esters. Dalton Transactions : an international journal of inorganic chemistry, 50(42), 15140-15152. https://doi.org/10.1039/d1dt02790e

Reaction of [LiPb(OiPr)3]2 (generated in situ) with either p-tert-butylcalix[4]areneH4 (L4H4) or p-tert-butylcalix[6]areneH6 (L6H6) resulted in the heterometallic lithium/lead complexes [Pb4Li2(L4)4H6(MeCN)3]·4.5MeCN (1·4.5MeCN) and [Pb8Li10Cl2(L6H2)... Read More about Lead calix[n]arenes (n = 4, 6, 8): Structures and ring opening homo-/co-polymerization capability for cyclic esters.

Metallocalix[n]arenes in catalysis: A 13-year update (2021)
Journal Article
Santoro, O., & Redshaw, C. (2021). Metallocalix[n]arenes in catalysis: A 13-year update. Coordination chemistry reviews, 448, Article 214173. https://doi.org/10.1016/j.ccr.2021.214173

Aside from their applications in the fields of ion extraction, gas storage and molecular sensors, calixarenes have been extensively employed as ligands for metal complexation. Moreover, metallocalix[n]arenes have shown interesting catalytic activity... Read More about Metallocalix[n]arenes in catalysis: A 13-year update.

Alkoxy-functionalized schiff-base ligation at aluminum and zinc: Synthesis, structures and rop capability (2021)
Journal Article
Zhang, X., Chen, K., Chicoma, M., Goins, K., Prior, T. J., Nile, T. A., & Redshaw, C. (2021). Alkoxy-functionalized schiff-base ligation at aluminum and zinc: Synthesis, structures and rop capability. Catalysts, 11(9), Article 1090. https://doi.org/10.3390/catal11091090

The Schiff-base compounds 2,4-di-tert-butyl-6-(((3,4,5-trimethoxyphenyl)imino)methyl)phenol (L1H), 2,4-di-tert-butyl-6-(((2,4,6-trimethoxyphenyl)imino)methyl)phenol (L2H), 2,4-di-tert-butyl-6-(((2,4-trimethoxyphenyl)imino)methyl)phenol) (L3H) derived... Read More about Alkoxy-functionalized schiff-base ligation at aluminum and zinc: Synthesis, structures and rop capability.

Scandium calix[n]arenes (n= 4, 6, 8): structural, cytotoxicity and ring opening polymerization studies (2021)
Journal Article
Alshamrani, A. F., Santoro, O., Prior, T. J., Alamri, M. A., Stasiuk, G. J., Elsegood, M. R. J., & Redshaw, C. (2021). Scandium calix[n]arenes (n= 4, 6, 8): structural, cytotoxicity and ring opening polymerization studies. Dalton Transactions : an international journal of inorganic chemistry, 50(24), 8302-8306. https://doi.org/10.1039/d1dt01330k

Interaction of [Sc(OR)3] (R = iPr or triflate) with p-tert-butylcalix[n]arenes, where n = 4, 6, or 8, affords a number of intriguing structural motifs, which are relatively non-toxic (cytotoxicity evaluated against cell lines HCT116 and HT-29) and a... Read More about Scandium calix[n]arenes (n= 4, 6, 8): structural, cytotoxicity and ring opening polymerization studies.

Coordination chemistry of [2 + 2] Schiff-base macrocycles derived from the dianilines [(2-NH2C6H4)2X] (X = CH2CH2, O): structural studies and ROP capability towards cyclic esters (2021)
Journal Article
Wang, K., Prior, T. J., Hughes, D. L., Arbaoui, A., & Redshaw, C. (2021). Coordination chemistry of [2 + 2] Schiff-base macrocycles derived from the dianilines [(2-NH2C6H4)2X] (X = CH2CH2, O): structural studies and ROP capability towards cyclic esters. Dalton Transactions : an international journal of inorganic chemistry, 50(23), 8057-8069. https://doi.org/10.1039/d1dt00711d

Reaction of the [2 + 2] Schiff-base macrocycles {[2-(OH)-5-(R)-C6H2-1,3-(CH)2][CH2CH2(2-C6H4N)2]}2(R = Me, L1H2;tBu, L2H2) with FeBr2afforded the complexes [FeBr(L1H2)]2[(FeBr3)2O]·2MeCN (1·2MeCN), [FeBr(L2H2)][X] (X = 0.5(FeBr3)2O,2·0.5MeCN, X = Br,... Read More about Coordination chemistry of [2 + 2] Schiff-base macrocycles derived from the dianilines [(2-NH2C6H4)2X] (X = CH2CH2, O): structural studies and ROP capability towards cyclic esters.

Comparative assessment of marine weathering of ROP-derived biopolymers against conventional plastics (2021)
Journal Article
Rodgers, K., Mayes, W. M., Santoro, O., Redshaw, C., Mccumskay, R., & Parsons, D. R. (2021). Comparative assessment of marine weathering of ROP-derived biopolymers against conventional plastics. Marine pollution bulletin, 167, Article 112272. https://doi.org/10.1016/j.marpolbul.2021.112272

Bio-based plastics were designed to replace single-use plastics and to cause less post-consumer environmental damage. This paper assesses the weathering of four bio-based polymers created by ring opening polymerization (ROP) promoted by a previously... Read More about Comparative assessment of marine weathering of ROP-derived biopolymers against conventional plastics.

Lithium calix[4]arenes: structural studies and use in the ring opening polymerization of cyclic esters (2021)
Journal Article
Redshaw, C., Yamato, T., Teat, S. J., Elsegood, M. R. J., & Santoro, O. (2021). Lithium calix[4]arenes: structural studies and use in the ring opening polymerization of cyclic esters. RSC advances, 11(19), 11304-11317. https://doi.org/10.1039/d1ra00175b

We have structurally characterized a number of lithiated calix[4]arenes, where the bridge in the calix[4]arene is thia (–S–, LS H4), sulfinyl (–SO–, LSOH4), sulfonyl (–SO2–, LSO2H4), dimethyleneoxa (–CH2OCH2–, LCOCH4) or methylene (–CH2–, LH4). In th... Read More about Lithium calix[4]arenes: structural studies and use in the ring opening polymerization of cyclic esters.

Titanium complexes bearing oxa- and azacalix[4, 6]arenes: structural studies and use in the ring opening homo-/co-polymerization of cyclic esters. (2021)
Journal Article
Xing, T., Prior, T. J., Chen, K., & Redshaw, C. (2021). Titanium complexes bearing oxa- and azacalix[4, 6]arenes: structural studies and use in the ring opening homo-/co-polymerization of cyclic esters. Dalton Transactions : an international journal of inorganic chemistry, 50(12), 4396-4407. https://doi.org/10.1039/d1dt00189b

Reaction of excess [Ti(OiPr)4] with p-tert-butyltetrahomodioxacalix[6]areneH6 (L1H6) afforded, after work-up (MeCN), the complex [Ti2(OiPr)2(MeCN)L1]∙3.5MeCN (1∙3.5MeCN), whilst the oxo complex [Ti4(3-O)2(H2O)(L1)2]∙MeCN (2∙MeCN) was isolated via a... Read More about Titanium complexes bearing oxa- and azacalix[4, 6]arenes: structural studies and use in the ring opening homo-/co-polymerization of cyclic esters..