2017
DOI: 10.21577/0103-5053.20170215
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Photophysical and Photochemical Properties and Aggregation Behavior of Phthalocyanine and Naphthalocyanine Derivatives

Abstract: The photophysical and photochemical properties of phthalocyanine and naphthalocyanine with similar structures were studied in solution and with density-functional theory (DFT) computational method. The extended π-conjugated system in naphthalocyanines causes a bathochromic shift in UV-Vis, emission and excitation bands, and promotes lesser generation of singlet oxygen in solution when compared to phthalocyanines. Time dependent DFT (TD-DFT) calculations point out the molecular orbitals involved in Q-band trans… Show more

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Cited by 7 publications
(5 citation statements)
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“…The optical properties of ZnNc and those of its tert -butyl-modified derivative t -Bu-ZnNc have received much less attention . To exploit ZnNc and its derivatives as near-infrared-absorbing chromophores in electronic and electro-optic applications, a deeper understanding of their excited states is needed.…”
Section: Introductionmentioning
confidence: 99%
“…The optical properties of ZnNc and those of its tert -butyl-modified derivative t -Bu-ZnNc have received much less attention . To exploit ZnNc and its derivatives as near-infrared-absorbing chromophores in electronic and electro-optic applications, a deeper understanding of their excited states is needed.…”
Section: Introductionmentioning
confidence: 99%
“…As a consequence of their high tendency to form aggregates, a drop of fluorescence and singlet oxygen quantum yields is observed [ 30 , 31 ]. There have been several structural variations introduced to overcome the solubility and aggregation issues of (na)phthalocyanines, including the insertion of bulky substituents in the peripheral positions of the macrocycles [ 25 , 32 , 33 , 34 , 35 ], the addition of axial ligands to the central atom [ 28 , 30 , 36 , 37 , 38 , 39 ], or the encapsulation of the dye in colloidal particles [ 40 , 41 ]. Furthermore, peripheral functional groups in Ncs macrocycles may be utilized to further tailor intra- and intermolecular interactions as well as optical, photochemical, and electrochemical properties; particularly, aromatic groups increase intermolecular π - π interactions [ 19 , 34 ].…”
Section: Introductionmentioning
confidence: 99%
“…Near-infrared (NIR) dyes have received increasing attention due to their versatile applications in materials science [1][2][3][4][5], medical applications [6][7][8][9][10][11][12][13][14], catalysis and other advanced technology devices [12,[15][16][17]. In this context, phthalocyanines and naphthalocyanines are very robust dyes with relevant photophysical properties and must be highlighted [18][19][20][21][22][23].…”
Section: Introductionmentioning
confidence: 99%