All Stories

  1. Fast (hetero)aryl-benzothiazolium ethenes photoswitches activated by visible-light at room temperature

    Article • Dyes and Pigments, June 2015, Elsevier

    Professor Paulo Coelho

  2. ChemInform Abstract: Acid-Catalyzed Domino Reactions of Tetraarylbut-2-yne-1,4-diols. Synthesis of Conjugated Indenes and Inden-2-ones.

    Article • ChemInform, November 2014, Wiley

    Professor Paulo Coelho

  3. Acid-Catalyzed Domino Reactions of Tetraarylbut-2-yne-1,4-diols. Synthesis of Conjugated Indenes and Inden-2-ones

    Article • The Journal of Organic Chemistry, June 2014, American Chemical Society (ACS)

    Professor Paulo Coelho

  4. Synthesis and characterization of the photochromic properties of new pyrrolidene dyes bearing benzothiazole or benzothiazolium acceptor groups

    Article • October 2013, MDPI AG

    Professor Paulo Coelho

  5. Synthesis of 1-Vinylidene-naphthofurans: A Thermally Reversible Photochromic System That Colors Only When Adsorbed on Silica Gel

    Article • The Journal of Organic Chemistry, July 2013, American Chemical Society (ACS)

    Professor Paulo Coelho

  6. Cationic 3H-indolium dyes by ring-opening of benzo[1,3]oxazine

    Article • Dyes and Pigments, July 2013, Elsevier

    Professor Paulo Coelho

  7. Reversible trans–cis photoisomerization of new pyrrolidene heterocyclic imines

    Article • Journal of Photochemistry and Photobiology A Chemistry, May 2013, Elsevier

    Professor Paulo Coelho

  8. Fast thermal cis–trans isomerization of heterocyclic azo dyes in PMMA polymers

    Article • Optical Materials, April 2013, Elsevier

    Professor Paulo Coelho

  9. Bichromophoric dye derived from benzo[1,3]oxazine system

    Article • Dyes and Pigments, February 2013, Elsevier

    Professor Paulo Coelho

  10. New heterocyclic systems to afford microsecond green-light isomerisable azo dyes and their use as fast molecular photochromic switches

    Article • Chemical Communications, January 2013, Royal Society of Chemistry

    Professor Paulo Coelho, Professor Maria Manuela Raposo, Dr Dolores Velasco

  11. Fast and fully reversible photochromic performance of hybrid sol–gel films doped with a fused-naphthopyran

    Article • Journal of Materials Chemistry C, January 2013, Royal Society of Chemistry

    Professor Paulo Coelho

  12. Enhancement of the photochromic switching speed of bithiophene azo dyes

    Article • Tetrahedron Letters, August 2012, Elsevier

    Professor Paulo Coelho

  13. Photochromic Fused-Naphthopyrans without Residual Color

    Article • The Journal of Organic Chemistry, April 2012, American Chemical Society (ACS)

    Professor Paulo Coelho

  14. Synthesis of a Photochromic Fused 2H-Chromene Capable of Generating a Single Coloured Species

    Article • European Journal of Organic Chemistry, February 2012, Wiley

    Professor Paulo Coelho

  15. Photoswitching in azo dyes bearing thienylpyrrole and benzothiazole heterocyclic systems

    Article • Dyes and Pigments, January 2012, Elsevier

    Professor Paulo Coelho

  16. One pot synthesis of aryl substituted aurones

    Article • Dyes and Pigments, January 2012, Elsevier

    Professor Paulo Coelho

  17. Synthesis and characterization of novel diazenes bearing pyrrole, thiophene and thiazole heterocycles as efficient photochromic and nonlinear optical (NLO) materials

    Article • Dyes and Pigments, October 2011, Elsevier

    Professor Paulo Coelho, Michael Belsley

  18. Preventing the Formation of the Long-Lived ColoredTransoid-TransPhotoisomer in Photochromic Benzopyrans

    Article • Organic Letters, August 2011, American Chemical Society (ACS)

    Professor Paulo Coelho

  19. Synthesis and photochemical reactivity of new 4-substituted naphtho[1,2-b]pyran derivatives

    Article • Journal of Photochemistry and Photobiology A Chemistry, November 2010, Elsevier

    Professor Paulo Coelho

  20. Unexpected formation of new photochromic compounds derived from 3,3-diphenyl-3H-naphtho[2,1-b]pyran-1-one

    Article • Tetrahedron, October 2010, Elsevier

    Professor Paulo Coelho

  21. Synthesis of carbonyl dyes from 1-hydroxy-2-acetonaphthone and 2-fluorobenzophenone

    Article • Journal of Heterocyclic Chemistry, July 2010, Wiley

    Professor Paulo Coelho

  22. NMR investigation of the dyes formed under UV irradiation of some photochromic indeno-fused naphthopyrans

    Article • Journal of Photochemistry and Photobiology A Chemistry, December 2009, Elsevier

    Professor Paulo Coelho

  23. Novel photochromic 2,2′-bithiophene azo dyes

    Article • Dyes and Pigments, August 2009, Elsevier

    Professor Paulo Coelho

  24. Thermally reversible photochromic behaviour of new naphthopyrans involving an intramolecular [2+2] cyclization reaction

    Article • Tetrahedron, July 2009, Elsevier

    Professor Paulo Coelho

  25. Novel Photochromic Spiro[Thioxanthene-Naphthopyrans] with Faster Bleaching Kinetics

    Article • Letters in Organic Chemistry, September 2008, Bentham Science Publishers

    Professor Paulo Coelho

  26. The unexpected formation of novel carbonyl dyes

    Article • Dyes and Pigments, August 2008, Elsevier

    Professor Paulo Coelho

  27. Remarkable thermally stable open forms of photochromic new N-substituted benzopyranocarbazoles

    Article • Journal of Photochemistry and Photobiology A Chemistry, August 2008, Elsevier

    Professor Paulo Coelho

  28. 1H and13C NMR signal assignments of some new spiro[7H-benzo[de]anthracene-naphthopyrans]

    Article • Magnetic Resonance in Chemistry, January 2008, Wiley

    Professor Paulo Coelho

  29. Synthesis and photochromic properties of symmetrical aryl ether linked bi- and tri-naphthopyrans

    Article • Dyes and Pigments, January 2008, Elsevier

    Professor Paulo Coelho

  30. Unprecedented coexistence of a spirooxazine and its four transoid photomerocyanines

    Article • Tetrahedron Letters, July 2006, Elsevier

    Professor Paulo Coelho

  31. Estudo do comportamento fotocrómico de um naftopirano: uma experiência simples ilustrativa do fotocromismo

    Article • Química Nova, June 2006, FapUNIFESP (SciELO)

    Professor Paulo Coelho

  32. Photochromic properties of thienylpyrrole azo dyes in solution

    Article • Tetrahedron Letters, May 2006, Elsevier

    Professor Paulo Coelho

  33. Spectrokinetic studies on new bi-photochromic molecules containing two naphthopyran entities

    Article • Tetrahedron, December 2005, Elsevier

    Professor Paulo Coelho

  34. New Benzopyranocarbazoles: Synthesis and Photochromic Behavior.

    Article • ChemInform, June 2005, Wiley

    Professor Paulo Coelho

  35. New benzopyranocarbazoles: synthesis and photochromic behaviour

    Article • Tetrahedron, February 2005, Elsevier

    Professor Paulo Coelho

  36. Synthesis of Hydroxy-7H-benzo[c]fluoren-7-ones.

    Article • ChemInform, September 2004, Wiley

    Professor Paulo Coelho

  37. The effect of a sulphur bridge on the photochromic properties of indeno-fused naphthopyrans

    Article • Tetrahedron, March 2004, Elsevier

    Professor Paulo Coelho

  38. Synthesis of Hydroxy-7 H -benzo[ c ]fluoren-7-ones

    Article • Synlett, January 2004, Thieme Publishing Group

    Professor Paulo Coelho

  39. Highly Diastereoselective Intramolecular Diels—Alder Reaction of Chiral Silatrienes.

    Article • ChemInform, July 2003, Wiley

    Professor Paulo Coelho

  40. Highly diastereoselective intramolecular Diels–Alder reaction of chiral silatrienes

    Article • Tetrahedron, March 2003, Elsevier

    Professor Paulo Coelho

  41. Synthesis and spectrokinetic studies of spiro[thioxanthene-naphthopyrans]

    Article • Tetrahedron, November 2002, Elsevier

    Professor Paulo Coelho

  42. First report of a permanent open form of a naphthopyran

    Article • Tetrahedron Letters, March 2002, Elsevier

    Professor Paulo Coelho

  43. Synthesis and photochromic behaviour of novel 2H-chromenes derived from fluorenone

    Article • Tetrahedron, January 2002, Elsevier

    Professor Paulo Coelho

  44. REGIOSELECTIVE SYNTHESIS OF SILACYCLOALKANES

    Article • Main Group Metal Chemistry, January 2001, De Gruyter

    Professor Paulo Coelho