Dendritic Encapsulation of Function: Applying Nature's Site Isolation Principle from Biomimetics to Materials Science

Hecht, Stefan; Fréchet, Jean M. J.

doi:10.1002/1521-3773(20010105)40:1<74::aid-anie74>3.0.co;2-c

Cited by 1,049 publications

(588 citation statements)

References 174 publications

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“…The product was obtained as a colorless solid (1.84 g, 50%). 1 H NMR (acetone-d 6 ) δ (ppm): 9.2 (br, 2H), 6.75 (s, 1H), 1.60 (s, 9H). 13 …”

Section: Tert-butyl 26-dibromo-35-dihydroxybenzoate (1)mentioning

confidence: 99%

“…After removal of the volatiles in vacuo, the product was obtained as a colorless solid (1.25 g, 97%) that required no further purification. 1 25.0 μmol) were mixed in THF and stirred at room temperature for 10 h. The volatile fraction was removed in vacuo, and the residue was dissolved in pentane. Insoluble materials were filtered off.…”

Section: Tert-butyl 35-dihydroxy-26-diphenylbenzoate (4)mentioning

confidence: 99%

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Iron Complexes of Dendrimer-Appended Carboxylates for Activating Dioxygen and Oxidizing Hydrocarbons

et al. 2008

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“…The product was obtained as a colorless solid (1.84 g, 50%). 1 H NMR (acetone-d 6 ) δ (ppm): 9.2 (br, 2H), 6.75 (s, 1H), 1.60 (s, 9H). 13 …”

Section: Tert-butyl 26-dibromo-35-dihydroxybenzoate (1)mentioning

confidence: 99%

Section: Tert-butyl 35-dihydroxy-26-diphenylbenzoate (4)mentioning

confidence: 99%

Iron Complexes of Dendrimer-Appended Carboxylates for Activating Dioxygen and Oxidizing Hydrocarbons

et al. 2008

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“…Collecting light by an antenna system, however, may also be useful for other purposes, such as signal amplification in luminescence sensors [44], photodynamic cancer therapy [45] and up-conversion processes [46]. A large system, where an array of chromophoric units absorb light and transfer energy to a luminescent center, can also be considered a spatial and spectral energy concentrator ( molecular lens ) [47].…”

Section: Light-harvesting Antennasmentioning

confidence: 99%

Artificial Photochemical Devices and Machines

Balzani

Venturi

2008

Organic Nanostructures

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The interaction between light and matter lies at the heart of the most important processes of life [1]. Photons are exploited by natural systems as both quanta of energy and elements of information. Light constitutes an energy source and is consumed (or, more precisely, converted) in large amount in the natural photosynthetic process, whereas it plays the role of a signal in vision-related processes, where the energy used to run the operation is biological in nature.A variety of functions can also be obtained from the interaction between light and matter in artificial systems [2]. The type and utility of such functions depend on the degree of complexity and organization of the chemical systems that receive and process the photons.About 20 years ago, in the frame of research on supramolecular chemistry, the idea began to arise [3][4][5] that the concept of macroscopic device and machine can be transferred to the molecular level. In short, a molecular device can be defined [6] as an assembly of a discrete number of molecular components designed to perform a function under appropriate external stimulation. A molecular machine [6-8] is a particular type of device where the function is achieved through the mechanical movements of its molecular components.In analogy with their macroscopic counterparts, molecular devices and machines need energy to operate and signal to communicate with the operator. Light provides an answer to this dual requirement. Indeed, a great number of molecular devices and machines are powered by light-induced processes and light can also be useful to read the state of the system and thus to control and monitor its operation. Before illustrating examples of artificial photochemical molecular devices and machines, it is worthwhile recalling a few basic aspects of the interaction between molecular and supramolecular systems and light. For a more detailed discussion, books [9][10][11][12][13][14][15] can be consulted.

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“…The ability to tune the properties of dendrimers [1][2][3][4][5] has allowed their development for use in diverse applications, including drug delivery, [6][7][8][9][10][11][12][13][14][15] biomimicry, 8,9,[16][17][18][19] catalysis, 15,[20][21][22][23][24][25][26] organic light emitting diodes, 15,21,[27][28][29] molecular wires, 30,31 sensors, [32][33][34][35] imaging agents, 7,9 and various other utilities. 15,[36][37][38][39][40][41][42] Coincident with these developments is the increasing nee...…”

Section: Introductionmentioning

confidence: 99%

Dendrimers Clicked Together Divergently

et al. 2005

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Dendrimers containing 1,4-triazole linkages between each generation were grown divergently via the Click chemistry inspired Huisgen 1,3-dipolar cycloaddition reaction in the presence of a Cu(I) catalyst. The monomeric unit (1-propargylbenzene-3,5-dimethanol) contained the alkyne functionality, while the core (1,2-bis(2-azidoethoxy)ethane) and growing dendrimers presented the azide groups necessary for this type of Click reaction. The first generation dendrimer was also functionalized with alkyne termini to demonstrate an alternative pathway allowed by this chemistry. Synthesis and characterization, with infrared (IR), 1 H and 13 C NMR spectroscopies, high-resolution mass spectrometry, gel permeation chromatography (GPC), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA), are reported for these divergently grown dendrimers.

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Dendritic Encapsulation of Function: Applying Nature's Site Isolation Principle from Biomimetics to Materials Science

Cited by 1,049 publications

References 174 publications

Iron Complexes of Dendrimer-Appended Carboxylates for Activating Dioxygen and Oxidizing Hydrocarbons

Iron Complexes of Dendrimer-Appended Carboxylates for Activating Dioxygen and Oxidizing Hydrocarbons

Artificial Photochemical Devices and Machines

Dendrimers Clicked Together Divergently

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