All Outputs (12)

Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2) (2022)
Journal Article
Zhang, X., Prior, T. J., Chen, K., Santoro, O., & Redshaw, C. (2022). Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2). Catalysts, 12(9), Article 935. https://doi.org/10.3390/catal12090935

The reactions of the titanium alkoxide [Ti(OR)4] (R = Me, nPr, iPr, tBu) with the acids 2,2’-Ph2C(X)(CO2H), where X = OH and NH2, i.e., benzilic acid (2,2’-diphenylglycolic acid, L1H2), and 2,2’-diphenylglycine (L2H3), have been investigated. The var... Read More about Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2).

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.

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.

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.

Synthesis, characterisation and ROP catalytic evaluation of Cu(II) complexes bearing 2,2ʹ-diphenylglycine-derived moieties (2020)
Journal Article
Alshamrani, A. F. A., Santoro, O., Ounsworth, S., Prior, T. J., Stasiuk, G. J., & Redshaw, C. (2021). Synthesis, characterisation and ROP catalytic evaluation of Cu(II) complexes bearing 2,2ʹ-diphenylglycine-derived moieties. Polyhedron, 195, Article 114977. https://doi.org/10.1016/j.poly.2020.114977

The treatment of CuX2 (X = Cl, Br) with an equimolar amount of 2-2ʹ-diphenylglycine (DpgH) in EtOH at reflux afforded, after work up, the complexes [CuCl(Dpg)(EtOH)]2 (1) and [(CuBr2)2(Dpg)2Cu(EtOH)4] (2), respectively. The compounds were obtained mi... Read More about Synthesis, characterisation and ROP catalytic evaluation of Cu(II) complexes bearing 2,2ʹ-diphenylglycine-derived moieties.

Rare-earth metal complexes derived from the acids Ph2C(X)CO2H (X= OH, NH2): Structural and ring opening polymerization (ROP) studies. (2020)
Journal Article
Collins, J., Santoro, O., Prior, T. J., Chen, K., & Redshaw, C. (2021). Rare-earth metal complexes derived from the acids Ph2C(X)CO2H (X= OH, NH2): Structural and ring opening polymerization (ROP) studies. Journal of molecular structure, 1224, Article 129083. https://doi.org/10.1016/j.molstruc.2020.129083

Treatment of Ln(NO3)3.6H2O (Ln = La, Ce) with an equimolar amount of 2,2’-diphenylglycine (DpgH) in ethanol afforded the corresponding hexacoordinated complexes (DpgH±)3Ln(NO3)3.H2O (DpgH± = zwitterionic 2,2’-diphenylglycine, Ln = La (1), Ce (2)). Th... Read More about Rare-earth metal complexes derived from the acids Ph2C(X)CO2H (X= OH, NH2): Structural and ring opening polymerization (ROP) studies..

Insights into the structures adopted by titanocalix[6 and 8]arenes and their use in the ring opening polymerization of cyclic esters (2020)
Journal Article
Santoro, O., Elsegood, M. R. J., Bedwell, E., Pryce, J., & Redshaw, C. (2020). Insights into the structures adopted by titanocalix[6 and 8]arenes and their use in the ring opening polymerization of cyclic esters. Dalton Transactions : an international journal of inorganic chemistry, 49(34), 11978-11996. https://doi.org/10.1039/d0dt02130j

Interaction of p-tert-butylcalix[6]areneH6, L1H6, with [TiCl4] afforded the complex [Ti2Cl3(MeCN)2(OH2)(L1H)][Ti2Cl3(MeCN)3(L1H)]∙4.5MeCN (1∙4.5MeCN), in which two pseudo octahedral titanium centres are bound to one calix[6]arene. A similar reaction... Read More about Insights into the structures adopted by titanocalix[6 and 8]arenes and their use in the ring opening polymerization of cyclic esters.

Synthesis of Biodegradable Polymers: A Review on the Use of Schiff-Base Metal Complexes as Catalysts for the Ring Opening Polymerization (ROP) of Cyclic Esters (2020)
Journal Article
Santoro, O., Zhang, X., & Redshaw, C. (2020). Synthesis of Biodegradable Polymers: A Review on the Use of Schiff-Base Metal Complexes as Catalysts for the Ring Opening Polymerization (ROP) of Cyclic Esters. Catalysts, 10(7), 1-49. https://doi.org/10.3390/catal10070800

This review describes the recent advances (from 2008 onwards) in the use of Schiff-base metal complexes as catalysts for the ring opening polymerization (ROP) of cyclic esters. The synthesis and structure of the metal complexes, as well as all aspect... Read More about Synthesis of Biodegradable Polymers: A Review on the Use of Schiff-Base Metal Complexes as Catalysts for the Ring Opening Polymerization (ROP) of Cyclic Esters.

Use of titanium complexes bearing diphenolate or calix[n]arene ligands in α-olefin polymerization and the ROP of cyclic esters (2020)
Journal Article
Santoro, O., & Redshaw, C. (2020). Use of titanium complexes bearing diphenolate or calix[n]arene ligands in α-olefin polymerization and the ROP of cyclic esters. Catalysts, 10(2), Article 210. https://doi.org/10.3390/catal10020210

In this review, we discuss the use of titanium complexes bearing either bridged diphenolate or calix[n]arene (n = 4, 6, 8) ligation, in the formation of plastics from α-olefins or via the ring opening polymerization (ROP) of cyclic esters. The synthe... Read More about Use of titanium complexes bearing diphenolate or calix[n]arene ligands in α-olefin polymerization and the ROP of cyclic esters.

Use of titanocalix[4]arenes in the ring opening polymerization of cyclic esters (2020)
Journal Article
Sun, Z., Zhao, Y., Santoro, O., Elsegood, M. R., Bedwell, E. V., Zahra, K., Walton, A., & Redshaw, C. (2020). Use of titanocalix[4]arenes in the ring opening polymerization of cyclic esters. Catalysis science & technology, 10(6), 1619-1639. https://doi.org/10.1039/c9cy02571e

The known dichloride complexes [TiCl2L(O)2(OR)2] (type I: R = Me (1), n-Pr (2) and n-pentyl (3); L(OH)2(OR)2 = 1,3-dialkyloxy-p-tert-butylcalix[4]arene), together with the new complexes {[TiL(O)3(OR)]2(μ-Cl)2}·6MeCN (R = n-decyl (4·6MeCN)), and [Ti(N... Read More about Use of titanocalix[4]arenes in the ring opening polymerization of cyclic esters.

Synthesis and structures of mono- and di-nuclear aluminium and zinc complexes bearing α-diimine and related ligands, and their use in the ring opening polymerization of cyclic esters (2019)
Journal Article
Xiao, L., Zhao, Y., Qiao, S., Sun, Z., Santoro, O., & Redshaw, C. (2020). Synthesis and structures of mono- and di-nuclear aluminium and zinc complexes bearing α-diimine and related ligands, and their use in the ring opening polymerization of cyclic esters. Dalton Transactions : an international journal of inorganic chemistry, 49(5), 1456-1472. https://doi.org/10.1039/c9dt04332b

A series of organoaluminium imino-amido complexes of the type {[ArNC(Me2)C(Me)NAr]AlMe2} (Ar = 2,6-iPr2C6H3 (1), Ar = 2,6-Et2C6H3 (2); Ar = 2,6-Me2C6H3 (3) have been prepared via reaction of AlR3 and the respective α-diimine. Similar reaction of the... Read More about Synthesis and structures of mono- and di-nuclear aluminium and zinc complexes bearing α-diimine and related ligands, and their use in the ring opening polymerization of cyclic esters.