You are here : Home » People » Faculty » Preeyanuch Sangtrirutnugul

Preeyanuch Sangtrirutnugul
Associate Professor Dr.



Phone: +66.(0).2.201.5147
Fax: +66.(0).2.354.7151
E-mail: preeyanuch.san@mahidol.ac.th

Room C414
Department of Chemistry,
Faculty of Science, Mahidol University,
Rama 6 Road, Ratchthewee
Bangkok 10400 Thailand


!! Available RGJ-Ph.D. Scholarship !!

One RGJ-Ph.D. Scholarship available (Thai students only)


B.Sc. students: GPAX > 3.25 or if you have at least one publication in an international journal

M.Sc. students: At least one publication in an international journal

Please contact preeyanuch.san@mahidol.ac.th for more detail.



B.Sc. Massachusetts Institute of Technology (MIT), USA

Ph.D. University of California, Berkeley, USA

Research Area

Research Area

Organometallic Chemistry, Homogeneous, and Heterogeneous Catalysis

Our research currently focuses on the synthesis of late transition metal complexes supported by nitrogen-based 1,2,3-triazole, imino, amino, or benzimidazole ligands and their catalytic applications in various chemical transformation. In addition, we are particularly interested in ligand stabilized metal nanoparticles for heterogeneous catalysis.

Research Highlights

(1) Tunable porosity of crosslinked-polyhedral oligomeric silsesquioxane supports for palladium-catalyzed aerobic alcohol oxidation in water

Palladium nanoparticles stabilized by ester functional groups from POSS-based cross-linked MMA networks exhibit high activities for aerobic alcohol oxidation in a water/P123 solution.


Preeyanuch Sangtrirutnugul, Thanawat Chaiprasert, Warodom Hunsiri, Thanudkit Jitjaroendee, Patsaya Songkhum, Kritapas Laohhasurayotin, Tanakorn Osotchan, and Vuthichai Ervithayasuporn* ACS Appl. Mater. Interfaces 2017, 9, 12812.


(2) Benzimidazole-triazole ligands with pendent triazole functionality: Unexpected formation and effects on copper-catalyzed aerobic alcohol oxidation 

Amino-triazole compounds unexpectedly undergo oxidative ring cyclization in the presence of copper ions to generate the corresponding benzimidazole-triazole products with a pendent triazole arm. While triazole substituents affect the solid state structures of the copper(II) complexes, ESR and CV data indicate the same molecular structures in CH3CN. We also observed that more steric  hindrance of the triazole substituents resulted in reduced catalytic activities for copper-catalyzed aerobic alcohol oxidation in CH3CN at room temperature. 


Manisa Kongkaew, Kannika Sitthisuwannakul, Vasut Nakarajouyphon, Soraya Pornsuwan, Palangpon Kongsaeree, Preeyanuch Sangtrirutnugul* Dalton Trans. 2016, 45, 16810.


(3) Homogeneous and heterogeneous catalysts of organopalladium functionalized-polyhedral oligomeric silsesquioxanes for Suzuki–Miyaura reaction

Mononuclear and multinuclear palladium(II) complexes of pyridine-triazole-functionalized POSS-based supports serve as highly active homogeneous and heterogeneous catalysts for Suzuki–Miyaura cross coupling, respectively. The heterogeneous catalysts can be reused for at least five reaction cycles via simple centrifugation without a loss of activities.


Vuthichai Ervithayasuporn, Kwanchanok Kwanplod, Jaursup Boonmak, Sujittra Youngme, Preeyanuch Sangtrirutnugul* J. Catal. 2015, 332, 62.


(4) Pyridine–triazole ligands for copper-catalyzed aerobic alcohol oxidation

A series of copper(II) complexes containing pyridine-triazole ligands were prepared. Based on CV data and DFT calculations, the regular type triazole coordination afforded more electron rich copper center as compared to the inverse type coordination. Consequently, the regular type Cu-triazole complex is a more active catalyst for aerobic oxidation of alcohol.

Pech Thongkam, Sudarat Jindabot, Samran Prabpai, Palangpon Kongsaeree, Taveechai Wititsuwannakul, Panida Surawatanawong, Preeyanuch Sangtrirutnugul* RSC Adv. 2015, 5, 55847.

(5) Palladium(II) complexes featuring bidentate pyridine–triazole ligands: Synthesis, structures, and catalytic activities for Suzuki–Miyaura coupling reactions

Our study have shown that with two possible types of triazole N donors (proximal vs. medial triazole nitrogen) palladium(II) ion selectively binds to the proximal triazole nitrogen to give a regular type triazole complex. Experimental studies further revealed more readily ligand dissociation for the palladium-medial triazole N coordination. In general, the palladium complexes featuring pyridine–triazole ligands are active for Suzuki–Miyaura cross coupling reactions in DMF:H2O.


Sudarat Jindabot, Kriengkamol Teerachanan, Pech Thongkam, Supavadee Kiatisevi, Tossapol Khamnaen, Phairat Phiriyawirut, Sumate Charoenchaidet, Thanasat Sooksimuang, Palangpon Kongsaeree, Preeyanuch Sangtrirutnugul* J. Organomet. Chem. 2014, 750, 35.


(6) Cu complexes supported by tripodal "click" ligands for atom transfer radical polymerization

Copper catalyst systems consisting of copper bromide and tripodal triazole-based ligands with different triazole substituents were investigated as catalysts for radical polymerization of methyl methacrylate (MMA).

Preeyanuch Sangtrirutnugul,* Kritdikul Wised, Purmpoon Maisopa, Nisalak Trongsiriwat, Pramuan Tangboriboonrat, Vichai Reutrakul Polym. Int. 2014, 63, 1869.

Preeyanuch Sangtrirutnugul,* Purmpoon Maisopa, Laksamee Chaicharoenwimolkul, Atchariya Sunsin, Ekasith Somsook, Vichai Reutrakul J. Appl. Polym. Sci. 2013, 127, 2757.




Asian Core Program (ACP) Lectureship Award 2011 (Singapore)



Dinickel(II) complexes with pyridine-substituted bis(triazolylmethyl)amine ligands: Structures and magnetic properties
Polyhedron / 15 November 2020
Anion-templated assembly of multinuclear copper(ii)-triazole complexes
New Journal of Chemistry / 28 August 2020
Influence of catalyst nuclearity on copper-catalyzed aerobic alcohol oxidation
Dalton Transactions / 2020
Triazole-based ligands functionalized silica: Effects of ligand denticity and donors on catalytic oxidation activity of Pd nanoparticles
Applied Organometallic Chemistry / 1 November 2019
Self-assembled Cu(II) cluster from aerobic oxidation of Cu(I)Br with tris(triazolyl)methanol
Inorganica Chimica Acta / 24 March 2019
Functionalized Bis(triazolyl)phenylmethanol–palladium(II) Catalysts for Cross Coupling Reactions in Water
ChemistrySelect / 30 April 2018
Heterogeneous Pd/POSS Nanocatalysts for C–C Cross-Coupling Reactions
ChemistrySelect / 17 January 2018
Effects of appended hydroxyl groups and ligand chain length on copper coordination and oxidation activity
New Journal of Chemistry / 2018
Tunable Porosity of Cross-Linked-Polyhedral Oligomeric Silsesquioxane Supports for Palladium-Catalyzed Aerobic Alcohol Oxidation in Water
ACS Applied Materials and Interfaces / 12 April 2017
Solid–state Synthesis of Polyhedral Oligomeric Silsesquioxane-Supported N-Heterocyclic Carbenes/Imidazolium salts on Palladium Nanoparticles: Highly Active and Recyclable Catalyst
ChemistrySelect / 1 October 2016
Benzimidazole-triazole ligands with pendent triazole functionality: Unexpected formation and effects on copper-catalyzed aerobic alcohol oxidation
Dalton Transactions / 2016
Homogeneous and heterogeneous catalysts of organopalladium functionalized-polyhedral oligomeric silsesquioxanes for Suzuki-Miyaura reaction
Journal of Catalysis / December 2015
Synthesis of cyclic polyesters: Effects of alkoxy side chains in salicylaldiminato tin(ii) complexes
Dalton Transactions / 21 July 2015
Pyridine-triazole ligands for copper-catalyzed aerobic alcohol oxidation
RSC Advances / 2015
Synthesis of aromatic functionalized cage-rearranged silsesquioxanes (T8, T10, and T12) via nucleophilic substitution reactions
Dalton Transactions / 24 November 2014
Trimethylsilyl-substituted triazole-based ligand for copper-mediated single-electron transfer living radical polymerization of methyl methacrylate
Polymer International / 1 October 2014
Air-stable imidazole-imine palladium complexes for Suzuki-Miyaura coupling: Toward an efficient, green synthesis of biaryl compounds
Journal of Organometallic Chemistry / 15 February 2014
Palladium(II) complexes featuring bidentate pyridine-triazole ligands: Synthesis, structures, and catalytic activities for Suzuki-Miyaura coupling reactions
Journal of Organometallic Chemistry / 2014
Tripodal "click" ligands for copper-catalyzed ATRP
Journal of Applied Polymer Science / 15 February 2013
Synthesis of high-molecular-weight poly(ε-caprolactone) catalyzed by highly active bis(amidinate) tin(ii) complexes
Dalton Transactions / 14 March 2011
Bis[2,6-bis(2-methoxyphenyl)pyridinium] di-μ-bromido-bis- [dibromidocuprate(II)]
Acta Crystallographica Section E: Structure Reports Online / March 2011
Nickel complexes with bis(8-quinolyl)silyl ligands. An unusual Ni 3Si2 cluster containing six-coordinate silicon
Organometallics / 8 November 2010
Reverse orders of reactivities in the polymerization of cyclic esters using N2O2 aluminium alkoxide complexes
Dalton Transactions / 2010
Alkyl and hydrido complexes of platinum(IV) supported by the bis(8-quinolyl)methylsilyl ligand
Organometallics / 26 May 2008
Silyl derivatives of [Bis(8-quinolyl)methylsilyl]iridium(III) complexes: Catalytic redistribution of arylsilanes and dehydrogenative arene silylation
Organometallics / 5 November 2007

& Proceeding

Conferences and Proceeding


(1) "Triazole-based ligands in copper- and palladium-catalyzed reactions" at The 16th TRF-OHEC Annual Congress 2017 (TOAC2017), Petchaburi, Thailand, 6–8 January 2017. (Oral presentation)

(2) "Cu(II) and Pd(II)-triazolyl complexes: effects of coordination and substituents on catalytic activities" at The 42nd Congress on Science and Technology of Thailand (STT 42), Bangkok, Thailand, 30 November–2 December 2016. (Invited talk)

(3) "Triazole-based ligands in copper- and palladium-catalyzed reactions" at the PERCH-CIC Congress IX: 2016 International Congress for Innovation in Chemistry, Chonburi, Thailand, 26–29 June 2016. (Invited talk)

(4) "Copper and palladium complexes featuring bidentate triazole-based ligands: synthesis and catalytic applications" at The 15th TRF-OHEC Annual Congress 2016 (TOAC2016), Petchaburi, Thailand, 11–13 January 2016. (Oral presentation)

(5) "Triazole-based ligands in Cu-catalyzed aerobic alcohol oxidation" at International Workshop on Molecular Catalysis and Fine Chemicals 2015, Tokyo Metropolitan University (TMU), Tokyo, Japan, 29 January 2015. (Invited talk)

(6) "Evaluation of triazole-based ligands for catalysis" at Mini-Symposium on Design of Efficient Molecular Catalysis for Environmental Benign Chemical Process and Materials, Tokyo Metropolitan University (TMU), Tokyo, Japan, 30 January 2014. (Invited talk)

(7) "Trimethylsilyl-substituted triazole-based ligand for copper-mediated single electron transfer-living radical polymerization of methyl methacrylate" at The 14th TRF-CHE Annual Congress 2014, Chonburi, Thailand, October 2014. (Poster presentation)

(8) "Copper-click catalyst: Controlled radical polymerization of methyl methacrylates in the presence of air" at the 6th International Conference on Cutting-Edge Organic Chemistry in Asia (ICCEOCA-6), Asian Core Program (ACP), Hong Kong, 11–15 December 2011. (Poster presentation)

(9) "Copper complexes featuring tripodal "click" ligands for atom transfer radical polymerization" at the 10th TRF Annual Congress 2010, Petchaburi, Thailand, October 2010. (Oral presentation)

(10) "Copper complexes featuring tripodal "click" ligands for atom transfer radical polymerization" at the 9th TRF Annual Congress 2009, Petchaburi, Thailand, October 2009. (Poster presentation)

(11) "Synthesis and reactivity studies of coordinatively unsaturated Ir(III) complexes containing a tridentate bis(8-quinolyl)methylsilyl ("NSiN") ligand", P. Sangtrirutnugul and T. D. Tilley at the 227th ACS National Meeting, Anaheim (CA), USA, 28 March–1 April 2004. (Oral presentation)

(12) "Synthesis of late transition metal complexes containing the tridentate bis(8-quinolyl)silyl ("NSiN") ligand", P. Sangtrirutnugul and T. D. Tilley at the 224th ACS National Meeting, Boston (MA), USA, 18–22 September 2002. (Poster presentation)

(13) "Stabilization of an unusual imido ligand with the V(N[t-Bu]Ar)3 complex", P. Sangtrirutnugul and C. C. Cummins at the 218th ACS National Meeting, New Orleans (LA), USA, 22–26 August 1999. (Poster presentation)


Invited Lectures

Polymer Science and Technology, Mahidol University, October 1, 2014

Department of Chemistry, National University of Singapore (NUS), November 5, 2012.

Division of Chemistry and Biological chemistry, Nanyang Technological University (NTU), November 7, 2012.

Thai Polyethylene Co., Ltd. May 2–4, 2007.




Coming Soon...


Teaching Courses

Department of Chemistry



Faculty of Science, Mahidol UniversityRama Road, RatchathewiBangkok 10400 THAILANDTel: +66.(0)-2201-5110-2 Fax: +66.(0)-2354-7151

E-mail : scchemistry@mahidol.ac.th

Copyright © 2009 - 2010 byDepartment of Chemistry, Faculty of Science, Mahidol University.All Rights Reserved.
 alt= facebook.png